EFFECT OF LIQUID SWINE WASTEWATER DOSES ON PHYSICAL, CHEMICAL AND ELECTROCHEMICAL ATTRIBUTES IN A CERRADO OXISOL. The addition of organic residues enhances soil and plant organic matter and nutrient content. To gauge the impact of varying liquid swine waste (LSW) levels on soil, we studied changes in a clayey Oxisol’s physical, chemical, and electrochemical traits from the Cerrado. LSW doses (0, 50, 150, 450, 600 m3 ha−1) were applied to the 0-0.20 m layer in a randomized design with three replicates. Post a 30-day incubation at 60% field capacity, the soil underwent mineralogical, physical (clay dispersed in water - CDW), chemical (sodium adsorption ratio - SAR, cation exchange capacity - CEC, base saturation - V%), and electrochemical (pH in H2O and KCl, ApH, point of zero charge - PZC, point of zero salt effect - PZSE, surface electric potential - iµo, and electrical conductivity - EC) analyses. The levels of exchangeable Ca, K, Mg, Na, and available P increased with increasing LSW doses. Increasing LSW doses in the soil led to an increase in EC, but soil salinization was not observed at the highest dose. With the application of LSW doses, there was a decrease in pH, ApH, PZSE, and an increase in CEC, PZC and ψo. Despite the increase in ψo, low clay dispersibility was observed. PHYSICAL OXISOL content (LSW Oxisols Oxisol s Cerrado 0, 0 (0 50 150 450 60 ha−1 ha1 ha 1 00.20 0020 0.20 20 0-0.2 replicates 30day day 30 mineralogical CDW, CDW , CDW) sodium SAR CEC V%, V V% V%) pH HO H O KCl ApH PZSE iµo EC analyses Ca K Mg Na dose ψo ( 5 15 45 6 ha− 00 00.2 002 020 0.2 2 0-0. 3 4 00. 02 0. 0-0 0-

RESUMO A cultura do sorgo é considerada uma das mais importantes do mundo devido a sua versatilidade de utilização. No entanto, o estresse hídrico pode ser considerado uma ameaça significativa para sua produtividade. A busca por produtos mitigadores do estresse hídrico é uma área de pesquisa crucial na agricultura e na gestão de recursos hídricos. Assim, o objetivo deste trabalho foi avaliar a viabilidade do uso do ácido salicílico como atenuante de estresse hídrico na cultura do sorgo. O experimento foi conduzido em ambiente telado, em delineamento em blocos ao acaso com esquema fatorial 4 × 2, com quatro repetições. Foram avaliados quatro níveis hídricos (40, 60, 80 e 100% da evapotranspiração) e duas concentrações de ácido salicílico (0 e 2,76 g L-1). Foram analisados a altura das plantas, diâmetro do caule, número de folhas, trocas gasosas, pigmentos fotossintéticos e fluorescência da clorofila a. A aplicação de lâminas de irrigação deficitárias reduziu a altura da planta, diâmetro do colmo, número de folhas e clorofila total no sorgo. No entanto, quando essas lâminas foram associadas ao ácido salicílico, foi observado que houve atenuação dos danos, especialmente em relação a clorofila a e b. Além disso, o ácido salicílico quando aplicado isoladamente, contribuiu para redução da temperatura da folha e aumento da eficiência de uso da água. Assim, o ácido salicílico pode ser usado para mitigar os efeitos do estresse salino em plantas de sorgo. utilização entanto produtividade Assim telado 2 repetições 40, 40 (40 60 8 100 evapotranspiração 0 ( 276 76 2,7 L1. L1 L 1 . L-1) caule gasosas planta colmo danos b disso isoladamente água (4 6 10 27 7 L-1 L-

ABSTRACT The sorghum crop is considered one of the most important worldwide due to its versatility. However, water stress can be considered a significant threat to its yield. The search for products that mitigate water stress is a crucial area of research in agriculture and water resources management. Thus, the objective in this study was to evaluate the feasibility of using salicylic acid as a water stress attenuator in sorghum. The experiment was conducted in a screened environment in a randomized block design with a 4 × 2 factorial scheme, with four replicates. Four levels of water (40, 60, 80, and 100% of evapotranspiration) and two concentrations of salicylic acid (0 and 2.76 g L-1) were evaluated. Plant height, stem diameter, number of leaves, gas exchange, photosynthetic pigments, and chlorophyll a fluorescence were analyzed. Application of deficit irrigation depths reduced plant height, stem diameter, number of leaves, and total chlorophyll in sorghum. However, when these depths were associated with salicylic acid, it was observed that the damage was attenuated, especially in chlorophyll a and b. Furthermore, salicylic acid reduced leaf temperature and increased water use efficiency when applied alone. Thus, salicylic acid can be used to mitigate the effects of salt stress on sorghum plants. versatility However yield management Thus scheme replicates 40, 40 (40 60 80 100 evapotranspiration 0 ( 276 76 2.7 L1 L 1 L-1 evaluated height diameter leaves exchange pigments analyzed attenuated b Furthermore alone plants (4 6 8 10 27 7 2. L-

RESUMO Devido às importantes funções do cálcio na fisiologia vegetal, a suplementação deste nutriente pode ser uma estratégia viável para aumentar a tolerância das plantas à salinidade. Assim, o objetivo deste estudo foi avaliar as trocas gasosas e o crescimento de cultivares de rúcula de folhas largas cultivadas em fibra de coco submetidas ao estresse salino. Quatro soluções nutritivas [(S1-solução nutritiva padrão (condutividade elétrica da água - CEa de 0,5 dS m-1; S2- solução nutritiva utilizando água salina com NaCl a 3,5 dS m-1; S3-S2 enriquecida com Ca(NO3)2 a 50%; S4-S2 enriquecido com Ca(NO3)2 a 100%, obtendo valores de 2,3, 5,1, 5,5 e 5,9 dS m-1, para S1, S2, S3 e S4, respectivamente], e duas cultivares de rúcula. (Donatella e Gigante Folha Larga), dispostas em esquema fatorial 2 × 4, com três repetições, foram estudadas. As plantas foram colhidas 40 dias após a semeadura e avaliadas quanto às seguintes variáveis: altura de planta, número de folhas, área foliar, massa fresca total, massa seca total, área foliar específica, suculência foliar, índice relativo de clorofila, condutância estomática, taxa de assimilação de CO2, taxa de transpiração, concentração interna de CO2 e eficiência instantânea do uso da água e eficiência intrínseca de carboxilação. A cultivar Gigante Folha Larga foi mais tolerante à salinidade da solução nutritiva. O uso de solução nutritiva salinizada afetou negativamente o crescimento e a fisiologia da rúcula, mas a adição extra de Ca(NO3)2 reduziu os efeitos nocivos da salinidade. Recomenda-se adição extra de 50% de Ca(NO3)2 na solução nutritiva para reduzir o efeito do estresse salino. vegetal Assim salino S1solução Ssolução S1 S condutividade 05 0 5 0, m1 m 1 m-1 S2 35 3 3, S3S2 SS S3-S CaNO32 CaNO Ca NO3 NO Ca(NO3) 50 S4S2 S4 S4-S 100 100% 23 2,3 51 5,1 55 5, 59 9 m1, 1, respectivamente, respectivamente , respectivamente] Donatella Larga, Larga) 4 repetições estudadas variáveis planta total específica clorofila estomática CO transpiração carboxilação Recomendase Recomenda se m- S3S CaNO3 Ca(NO3 S4S 10 2, Ca(NO

ABSTRACT Due to the important functions of calcium in plant physiology, supplementation of this nutrient may be a viable strategy to increase the tolerance of plants to salinity. Thus, the objective in this study was to evaluate the gas exchange and growth of broad-leaf arugula cultivars cultivated in coconut fiber subjected to salt stress. Four nutrient solutions [(S1 - standard nutrient solution (electrical conductivity of water - ECw of 0.5 dS m-1; S2 - nutrient solution using saline water with NaCl at 3.5 dS m-1; S3 - S2 enriched with Ca(NO3)2 at 50%; S4 - S2 enriched with Ca(NO3)2 at 100%, obtaining values of 2.3, 5.1, 5.5, and 5.9 dS m-1, for S1, S2, S3, and S4, respectively], and two cultivars of arugula (Donatella and Gigante Folha Larga), arranged in a 2 × 4 factorial scheme, with three replicates, were studied. Plants were harvested 40 days after sowing and evaluated for the following variables: plant height, number of leaves, leaf area, total fresh mass, total dry mass, specific leaf area, leaf succulence, relative chlorophyll index, stomatal conductance, CO2 assimilation rate, transpiration rate, internal CO2 concentration, instantaneous water use efficiency, and intrinsic carboxylation efficiency. The cultivar Gigante Folha Larga was more tolerant to salinity of nutrient solution. The use of salinized nutrient solution negatively affected arugula growth and physiology, but the extra addition of Ca(NO3)2 reduced the harmful effects of salinity. Extra addition of 50% of Ca(NO3)2 in the nutrient solution is recommended to reduce the effect of salt stress. physiology Thus broadleaf broad stress S1 S [(S electrical 05 0 5 0. m1 m 1 m-1 35 3 3. CaNO32 CaNO Ca NO3 NO Ca(NO3) 50 100 100% 23 2.3 51 5.1 55 5.5 59 9 5. m1, 1, respectively, respectively , respectively] Donatella Larga, Larga) scheme replicates studied variables height leaves area mass succulence index conductance CO rate concentration efficiency m- CaNO3 Ca(NO3 10 2. Ca(NO

RESUMO No clima semiárido, o crescimento de mudas frutíferas é desafiado pelo estresse hídrico característico da região, o que pode restringir seu desenvolvimento e, consequentemente, afetar a produção. Nesse contexto, o objetivo foi avaliar o efeito do extrato pirolenhoso nas características de troca gasosa, pigmentos fotossintéticos, crescimento e biomassa de pitangueira sob diferentes intensidades de déficit hídrico. O experimento foi conduzido em casa de vegetação utilizando um delineamento em blocos casualizados em um esquema fatorial 3 × 2, com quatro repetições, correspondendo a períodos de déficit hídrico foram de 7 e 14 dias, além do controle (irrigação diária), no substrato sem e com extrato pirolenhoso. As plantas foram avaliadas quanto às características de trocas gasosas foliares, índices de clorofila, crescimento e biomassa seca. A aplicação de extrato pirolenhoso aos 7 dias de déficit hídrico elevou a taxa fotossintética, a eficiência de carboxilação e o índice de qualidade de Dickson das mudas de pitanga em 40,04, 42,85 e 41,51%, respectivamente, em comparação aos 14 dias de déficit hídrico. O extrato pirolenhoso foi efetivo como um atenuante do estresse hídrico nas mudas de pitanga, especialmente durante os primeiros sete dias de exposição ao estresse. Assim, sua aplicação é recomendada como uma medida preventiva e de curto prazo para mitigar tais efeitos nas mudas de pitanga. semiárido região consequentemente produção contexto gasosa fotossintéticos 2 repetições 1 irrigação diária, diária , diária) foliares clorofila seca fotossintética 4004 40 04 40,04 4285 42 85 42,8 4151 41 51 41,51% respectivamente Assim 400 4 0 40,0 428 8 42, 415 5 41,51 40, 41,5 41,

ABSTRACT In the semi-arid climate, the growth of fruit seedlings is challenged by the water stress characteristic of the region, which can restrict their development and, consequently, affect production. In this context, the aim was to assess the effect of pyroligneous extract on gas exchange characteristics, photosynthetic pigments, growth, and biomass of pitanga under different intensities of water deficit. The experiment was conducted using a randomized block design in a 3 × 2 factorial scheme, with four replicates, corresponding to water deficit periods (7 and 14 days) and control (daily irrigation), in substrates with and without pyroligneous extract. The plants were evaluated for gas exchange characteristics, chlorophyll indices, growth, and dry biomass. Application of pyroligneous extract after 7 days of water deficit increased the photosynthetic rate, carboxylation efficiency and Dickson quality index of pitanga seedlings by 40.04, 42.85 and 41.51%, respectively, compared to 14 days of water deficit. Pyroligneous extract was effective as a water stress attenuator in pitanga seedlings, especially during the first seven days of exposure to stress. Therefore, its application is recommended as a preventive and short-term measure to mitigate such effects on pitanga seedlings. semiarid semi arid climate region consequently production context characteristics pigments scheme replicates ( 1 daily irrigation, irrigation , irrigation) indices rate 4004 40 04 40.04 4285 42 85 42.8 4151 41 51 41.51% respectively Therefore shortterm short term 400 4 0 40.0 428 8 42. 415 5 41.51 40. 41.5 41.

RESUMO As atividades de recuperação insustentáveis (URAs) têm sido cada vez mais realizadas para responder à crescente procura global de alimentos, levando a graves repercussões nos ambientes terrestres. Um total de 120 amostras de solo representando 12 locais foram selecionadas aleatoriamente nos três tipos distintos de terra (PMFs, PALs e BHLs) a uma profundidade de 60 cm para avaliar os impactos das URAs na província de Nghe An Mountain, no Vietnã. A análise estatística dos parâmetros do solo foi realizada no software SPSS (versão 26.0) por meio de análise de variância unidirecional (ANOVA). As descobertas indicam diferenças distintas no tamanho das partículas do solo (SPS) entre os diferentes tipos de terreno (DLTs). Florestas virgens e mistas (PMFs) exibiram as menores proporções de areia, variando de 31,4 a 35,2%, enquanto colinas e terras nuas (BHLs) registraram as maiores proporções de areia, variando de 49,7 a 55,1%. Elevado densidade global (BD) foi observado em BHLs (1,36 ± 0,07 kg dm-3) e PMFs (0,89 ± 0,02 a 1,13 ± 0,03 kg dm-3) enquanto terras perenes e anuais (PALs) variaram de 1,17 ± 0,04 a 1,25 ± 0,08 kg dm-3. Os PMFs apresentaram baixos valores de porosidade total do solo (TSP) e teor de água do solo (SWC) com respectivas faixas de 32,97-36,18% e 4,72-6,15% enquanto PALs e BHLs exibiram valores elevados para TSP (39,25-43,19%; 43,97-49,62%). e SWC (7,39-10,07%; 9,98-12,74%). A capacidade de troca catiônica (CEC), Ca2+, K+ e Mg2+ registrou altos valores nos PALs em comparação aos PMFs e PALs, enquanto o conteúdo orgânico total (TOCs) detectou pouca variação entre os DLTs. No geral, as URAs aumentaram os efeitos adversos nas propriedades e funções do solo (SPFs) em toda a área de estudo. (URAs alimentos terrestres 1 PMFs, (PMFs 6 Mountain Vietnã versão 26.0 260 26 0 ANOVA. ANOVA . (ANOVA) SPS (SPS DLTs (DLTs) areia 314 31 4 31, 352 35 2 35,2% (BHLs 497 49 7 49, 551 55 55,1% BD (BD 1,36 136 36 (1,3 007 07 0,0 dm3 dm 3 dm-3 0,89 089 89 (0,8 002 02 113 13 1,1 003 03 (PALs 117 17 004 04 125 25 1,2 008 08 dm3. 3. (TSP (SWC 32,9736,18% 32973618 32,97 36,18% 32 97 18 32,97-36,18 4,726,15% 472615 4,72 6,15% 72 15 4,72-6,15 39,2543,19% 39254319 39,25 43,19% 39 43 19 (39,25-43,19% 43,9749,62%. 43974962 43,97 49,62% 62 43,97-49,62%) 7,3910,07% 7391007 7,39 10,07% 10 (7,39-10,07% 9,9812,74%. 9981274 9,98 12,74% 9 98 74 9,98-12,74%) CEC, CEC , (CEC) Ca2 Ca Ca2+ K Mg2 Mg TOCs (TOCs geral SPFs (SPFs estudo 26. (ANOVA (DLTs 35,2 5 55,1 1,3 (1, 00 0, dm- 0,8 8 (0, 11 1, 9736 32,9736,18 3297361 3297 32,9 3618 36,18 32,97-36,1 726 4,726,15 47261 472 4,7 615 6,15 4,72-6,1 2543 39,2543,19 3925431 3925 39,2 4319 43,19 (39,25-43,19 9749 43,9749,62% 4397496 4397 43,9 4962 49,62 43,97-49,62% 3910 7,3910,07 739100 739 7,3 1007 10,07 (7,39-10,07 9812 9,9812,74% 998127 998 9,9 1274 12,74 9,98-12,74% (CEC 35, 55, (1 (0 973 32,9736,1 329736 329 32, 361 36,1 32,97-36, 4,726,1 4726 47 4, 61 6,1 4,72-6, 254 39,2543,1 392543 392 39, 431 43,1 (39,25-43,1 974 43,9749,62 439749 439 43, 496 49,6 43,97-49,62 391 7,3910,0 73910 73 7, 100 10,0 (7,39-10,0 981 9,9812,74 99812 99 9, 127 12,7 9,98-12,74 ( 32,9736, 32973 36, 32,97-36 4,726, 6, 4,72-6 39,2543, 39254 (39,25-43, 43,9749,6 43974 43,97-49,6 7,3910, 7391 10, (7,39-10, 9,9812,7 9981 12, 9,98-12,7 32,9736 32,97-3 4,726 4,72- 39,2543 (39,25-43 43,9749, 43,97-49, 7,3910 (7,39-10 9,9812, 9,98-12, 32,973 32,97- 39,254 (39,25-4 43,9749 43,97-49 7,391 (7,39-1 9,9812 9,98-12 (39,25- 43,974 43,97-4 (7,39- 9,981 9,98-1 (39,25 43,97- (7,39 9,98- (39,2 (7,3 (39, (7, (39 (7 (3

ABSTRACT Unsustainable reclamation activities (URAs) have been increasingly conducted to respond to the rising global food demand, leading to severe repercussions on land environments. A total of 120 soil samples representing 12 sites were randomly selected in the three distinct land types (PMFs, PALs, and BHLs) to a depth of 60 cm. The impacts of URAs on soil properties and functions (SPFs) across the Nghe An mountainous province, Vietnam were assessed using the SPSS software (version 26.0) through a one-way analysis of variance (ANOVA). The findings indicated the distinct differences in soil particle size (SPS) among different land types (DLTs). Pristine and mixed forests (PMFs) exhibited the lowest sand ratios, ranging from 31.4 to 35.2%, while bare hills and lands (BHLs) recorded the highest sand ratios, ranging from 49.7 to 55.1%. High bulk density (BD) was observed in BHLs (1.36 ± 0.07 kg dm-3) and PMFs (0.89 ± 0.02 to 1.13 ± 0.03 kg dm-3) while perennial and annual lands (PALs) varied from 1.17 ± 0.04 to 1.25 ± 0.08 kg dm-3. PMFs showed low values for total soil porosity (TSP), and soil water content (SWC) with respective ranges of 32.97-36.18% and 4.72-6.15% while PALs and BHLs exhibited high values for TSP (39.25-43.19%; 43.97-49.62%), and SWC (7.39-10.07%; 9.98-12.74%). Cation exchange capacity (CEC), Ca2+, K+, and Mg2+ were recorded higher in PALs compared to PMFs and PALs while total organic contents (TOCs) detected little variation among DLTs. Overall, the URAs enhanced the adverse effects on the SPFs across the study area. (URAs demand environments 1 PMFs, (PMFs 6 cm (SPFs province version 26.0 260 26 0 oneway one way ANOVA. ANOVA . (ANOVA) SPS (SPS DLTs (DLTs) ratios 314 31 4 31. 352 35 2 35.2% (BHLs 497 49 7 49. 551 55 55.1% BD (BD 1.36 136 36 (1.3 007 07 0.0 dm3 dm 3 dm-3 0.89 089 89 (0.8 002 02 113 13 1.1 003 03 (PALs 117 17 004 04 125 25 1.2 008 08 dm3. 3. TSP, , (TSP) (SWC 32.9736.18% 32973618 32.97 36.18% 32 97 18 32.97-36.18 4.726.15% 472615 4.72 6.15% 72 15 4.72-6.15 39.2543.19% 39254319 39.25 43.19% 39 43 19 (39.25-43.19% 43.9749.62%, 43974962 43.97 49.62% 62 43.97-49.62%) 7.3910.07% 7391007 7.39 10.07% 10 (7.39-10.07% 9.9812.74%. 9981274 9.98 12.74% 9 98 74 9.98-12.74%) CEC, CEC (CEC) Ca2 Ca Ca2+ K K+ Mg2 Mg TOCs (TOCs Overall area 26. (ANOVA (DLTs 35.2 5 55.1 1.3 (1. 00 0. dm- 0.8 8 (0. 11 1. (TSP 9736 32.9736.18 3297361 3297 32.9 3618 36.18 32.97-36.1 726 4.726.15 47261 472 4.7 615 6.15 4.72-6.1 2543 39.2543.19 3925431 3925 39.2 4319 43.19 (39.25-43.19 9749 43.9749.62% 4397496 4397 43.9 4962 49.62 43.97-49.62% 3910 7.3910.07 739100 739 7.3 1007 10.07 (7.39-10.07 9812 9.9812.74% 998127 998 9.9 1274 12.74 9.98-12.74% (CEC 35. 55. (1 (0 973 32.9736.1 329736 329 32. 361 36.1 32.97-36. 4.726.1 4726 47 4. 61 6.1 4.72-6. 254 39.2543.1 392543 392 39. 431 43.1 (39.25-43.1 974 43.9749.62 439749 439 43. 496 49.6 43.97-49.62 391 7.3910.0 73910 73 7. 100 10.0 (7.39-10.0 981 9.9812.74 99812 99 9. 127 12.7 9.98-12.74 ( 32.9736. 32973 36. 32.97-36 4.726. 6. 4.72-6 39.2543. 39254 (39.25-43. 43.9749.6 43974 43.97-49.6 7.3910. 7391 10. (7.39-10. 9.9812.7 9981 12. 9.98-12.7 32.9736 32.97-3 4.726 4.72- 39.2543 (39.25-43 43.9749. 43.97-49. 7.3910 (7.39-10 9.9812. 9.98-12. 32.973 32.97- 39.254 (39.25-4 43.9749 43.97-49 7.391 (7.39-1 9.9812 9.98-12 (39.25- 43.974 43.97-4 (7.39- 9.981 9.98-1 (39.25 43.97- (7.39 9.98- (39.2 (7.3 (39. (7. (39 (7 (3

Resumo: Desde os primórdios das ciências sociais durante o século 18 europeu, a filosofia manteve uma relação problemática com elas, particularmente com a sociologia. Apesar do processo histórico de progressiva estruturação e diferenciação das ciências sociais da filosofia, a discussão não está de modo algum definitivamente resolvida, pelo menos do ponto de vista da filosofia. Este artigo revisa a posição do sociólogo Pierre Bourdieu a esse respeito. Contra a ideia segundo a qual, para Bourdieu, tanto a filosofia quanto as ciências sociais são capazes de elaborar problemas e conceitos, diferenciando-se apenas por seus métodos e mantendo um frutífero intercâmbio teórico entre si, uma leitura processual de sua obra, apoiada em estudos historiográficos recentes, revelam uma posição mais radical segundo a qual as ciências sociais desenvolveram a capacidade autônoma de elaborar o conhecimento científico autêntico. Assim, a ambiguidade de Bourdieu em relação à filosofia nada mais seria do que a aparência superficial de um processo de ruptura permanente, que o desenvolvimento de sua sociologia exigia. Resumo 1 europeu elas resolvida respeito conceitos diferenciandose diferenciando se si obra recentes autêntico Assim permanente exigia

Abstract: Since the origins of the social sciences during the European eighteenth century, philosophy has maintained a problematic relationship with them, particularly with sociology. Despite the historical process of progressive structuring and differentiation of the social sciences from philosophy, the discussion is by no means definitively settled, at least from the point of view of philosophy. This article reviews the position of the sociologist Pierre Bourdieu in this regard. Against the idea according to which, for Bourdieu, both philosophy and the social sciences are capable of elaborating problems and concepts, differing only by their methods and maintaining a fruitful theoretical exchange with each other, a processual reading of his work, supported by recent historiographical studies, reveal a more radical position according to which the social sciences have developed the autonomous capacity to elaborate authentic scientific knowledge. Thus, Bourdieu's ambiguity in relation to philosophy would be nothing more than the superficial appearance of a permanent rupture process, which the development of his sociology required. Abstract century them settled regard concepts other work studies knowledge Thus Bourdieus s required

Resumen: Desde los orígenes de las ciencias sociales durante el siglo 18 europeo, la filosofía ha mantenido con ellas una relación problemática, particularmente con la sociología. No obstante el proceso histórico de estructuración y diferenciación progresiva de las ciencias sociales respecto de la filosofía, la discusión no está para nada definitivamente zanjada, al menos desde el punto de vista de la filosofía. En este artículo se revisa la posición del sociólogo Pierre Bourdieu al respecto. En contra de la idea según la cual, para Bourdieu, tanto la filosofía como las ciencias sociales son capaces de elaborar problemas y conceptos, diferenciándose solamente por sus métodos y manteniendo entre sí un fecundo intercambio teórico, una lectura procesual de su obra, apoyada en estudios historiográficos recientes, revelan una postura más radical según la cual las ciencias sociales han desarrollado la capacidad autónoma de elaborar un auténtico conocimiento científico. Así, la ambigüedad de Bourdieu en relación con la filosofía, no sería más que la apariencia superficial de un proceso de ruptura permamente, que el desarrollo de su sociología requirió. Resumen 1 europeo problemática zanjada conceptos teórico obra recientes científico Así permamente requirió

Resumen Objetivo: este artículo estudia la relación entre la demanda turística y el crecimiento económico, el tipo de cambio real y la incertidumbre de política económica (EPU, por sus siglas en inglés) en Australia, China, Francia, Alemania, Italia, Japón, España, Estados Unidos y el Reino Unido. Metodología: se aplicaron pruebas de dependencia transversal, de raíz unitaria y de cointegración. El modelo de largo plazo se estimó con los siguientes métodos: PCSE, FGLS y FMOLS. Resultados: los resultados muestran una relación positiva entre el crecimiento económico y el tipo de cambio real respecto a la demanda turística. En el largo plazo, la relación de causalidad es de la incertidumbre, el tipo de cambio y el PIB al turismo. Se valida la hipótesis de retroalimentación. Limitaciones: la disponibilidad de datos. Originalidad: estudia la influencia conjunta del crecimiento económico y la EPU sobre la demanda de turismo en los países de los principales destinos mundiales de turismo internacional según los ingresos turísticos internacionales. Conclusiones: se sugiere que el turismo impulsará el crecimiento económico general, y de manera correspondiente la inversión en otros sectores de la economía también influirá en un aumento del turismo.

Abstract Objective: to study the relationship among tourism demand and economic growth, real exchange rate, and economic policy uncertainty (EPU) in Australia China, France, Germany, Italy, Japan, Spain, the United States, and the United Kingdom. Methodology: cross-section dependence, unit root, and cointegration tests were applied. The long-term model was estimated according to the Panel-Corrected Standard Error (PCSE), Feasible Generalised Least Squares (FGLS), and Fully Modified Ordinary Least Square (FMOLS). Results: the results show a positive relationship between economic growth and the real exchange rate concerning tourism demand. In the long term, the causality relationship is from uncertainty, exchange rate, and GDP to tourism. The feedback hypothesis is validated. Limitations: availability of data. Originality: it studies the joint influence of economic growth and the EPU on demand for tourism in the countries of the world’s leading destinations for international tourism according to international tourist income. Conclusions: tourism will drive general economic growth and, correspondingly, investment in other sectors of the economy will also influence an increase in tourism.

Resumen Este artículo reflexiona sobre la importancia de la tuba tanto en la música de banda como en la música regional mexicana, como parte del auge comercial de agrupaciones de tuba y acordeón o norteño-banda. Esta aproximación recupera fuentes documentales y notas de observación participante con músicos de bandas y conjuntos de Tijuana. A diferencia de otros estudios sobre bandas de viento en México, el presente trabajo destaca los intercambios musicales desde y hacia Estados Unidos como catalizadores del desarrollo técnico del instrumento y su adopción en las bandas populares. Esta visión aporta un enfoque transfronterizo a los estudios sobre el desarrollo de la banda y el conjunto en ambos lados de la frontera. Finalmente, se destaca también la importancia de la tuba para la música regional mexicana contemporánea, misma que se integró a la industria musical transnacional como parte de una manifestación musical subalterna.

Abstract This article reflects on the importance of tuba on banda and Mexican regional music, under the actual expansion of tuba and accordion bands. This approach retrieves documental sources and notes of participant observation about musicians of bands and conjuntos in Tijuana. In contrast to other studies concerning banda music groups in Mexico, the present work highlights the musical exchanges to and from the United States as catalysts for the technical development of the instrument and its adoption in popular bands. This vision brings a cross-border approach to the studies on the development of banda and conjunto in both sides of the border. In conclusion, it also highlights the importance of tuba for the contemporary Mexican regional music, which was integrated to the transnational music industry as a part of subaltern musical manifestation.

Abstract In recent years, several emblematic cases of girls pregnant due to rape have occupied the Brazilian news. The obstacles they faced to access the right to abortion mobilized the public debate, especially through social networks. In this context, using a theoretical-analytical framework in relation to the narrative disputes and framing of social movements in networks, this article analyzes two of the most recent widely known cases on Twitter/X. To do so, quantitative and qualitative methodologies are employed. On the one hand, message exchange networks are analyzed, along with their influence and contagion relationships and automation in Twitter/X. On the other hand, narratives are categorized based on topic modelling combined with qualitative analysis, highlighting narratives for and against abortion rights in order to understand how the social imaginary is disputed in networks. It is concluded that the narratives for sexual and reproductive rights were successful in influencing the public sphere and in promoting ideas with positive effects for guaranteeing victims’ rights. However, these same narratives reproduced a moral dichotomy between “good” and “bad” abortions. Thus, it is necessary to overcome such antagonisms so that all people may have reproductive freedom in the future.

Resumen En los últimos años, varios casos emblemáticos de niñas embarazadas debido a violaciones han ocupado las noticias brasileñas. Los obstáculos que ellas enfrentaron para acceder al derecho al aborto movilizaron el debate público, especialmente a través de las redes sociales. En este contexto, utilizando un marco teórico- analítico sobre las disputas narrativas y los encuadres de los movimientos sociales en las redes, en este artículo se analiza el abordaje en Twitter/X de dos de los principales casos más recientes. Para ello, se emplean metodologías cuantitativas y cualitativas. Por un lado, se analizan las redes de intercambio de mensajes, sus relaciones de influencia y contagio y la automatización. Por otro, se categorizan las narrativas a partir de topic modelling combinada con el análisis cualitativo y poniendo énfasis en las narrativas a favor y en contra del derecho al aborto para entender cómo se disputa el imaginario social en las redes. Se concluye que las narrativas por los derechos sexuales y reproductivos tuvieron éxito en influir en la esfera pública y en promover ideas con efectos positivos para la garantía de los derechos de las víctimas. Sin embargo, esas mismas narrativas reprodujeron una dicotomía moral entre abortos “buenos” y “malos”. Por ello, se requiere superar tales antagonismos para que todas las personas tengan libertad reproductiva en un futuro.

Resumen En este artículo se indagan las desigualdades en los itinerarios internacionales de entradas y salidas en el sistema universitario vinculando las migraciones con la educación y las movilidades académicas. A partir de un análisis cuantitativo de fuentes primarias y secundarias, se explora la presencia de estudiantes migrantes y de intercambio de grado y posgrado en la Universidad Nacional de Córdoba (UNC), así como las movilidades desde esta institución hacia diversos destinos del mundo. Entre los principales hallazgos destaca la identificación de espacios relativamente jerarquizados y un perfil selectivo de estudiantes en las movilidades que se encuadran en las políticas de internacionalización. Sobresale una mayor heterogeneidad de perfiles entre estudiantes de la UNC nacidos en el extranjero. El principal aporte del artículo es que se analizan simultáneamente movilidades que suelen observarse por separado, lo que permite vislumbrar los diversos recorridos de los estudiantes signados por el origen de la clase social.

ABSTRACT This paper researches the inequalities in the international itineraries of entrances and exits in the university system, linking migrations with education and academic mobility. With this purpose, it is explored from a quantitative analysis of primary and secondary sources, the presence of migrant students and undergraduate and graduate exchange students at the Universidad Nacional de Córdoba (UNC), and the mobilities from the same institution to various destinations in the world. Among the main findings, the identification of relatively hierarchical spaces and a selective profile of students in the mobilities that fall within the internationalization policies stand out. Meanwhile, among UNC students born abroad, a greater heterogeneity of profiles stands out. The main contribution of this article is to simultaneously analyze mobilities that are usually observed separately, allowing us to glimpse various routes of mobile students, marked by their social class origin.

Abstract Introduction. The parameters of physiological response to drought stress are the result of a combination of slow- or fast-acting attributes. Gas exchange variables are classified as fast-acting and their level of occurrence or impact depends on the interaction between factors such as genotype and the duration, intensity, and phenological stage of stress occurrence. Objective. To identify the levels of physiological response exhibited by Solanum phureja under progressive water deficit stress. Materials and methods. The experiment was conducted between 2019 and 2020 under semi-controlled conditions at the Obonuco Research Center of the Corporación Colombiana de Investigación Agropecuaria. Four potato cultivars were planted, with half of the trial was maintained at field capacity and the other half subjected to water deficit stress by withholding irrigation for 15 days, followed by rehydration. Gas exchange variables, chlorophyll content, and photosynthetic efficiency were evaluated every three days. Results. Significant differences were observed, with maximum gas exchange values in control plants showing 16.67 µmol m-2 s-1 photosynthesis rate (A); 0.34 mol m-2 s-1 stomatal conductance (gs); 5.5 mmol m-2 s-1 transpiration (E), and under stress, 1.17 µmol m-2 s-1 (A); 0.013 mol m-2 s-1 (gs); 0.29 mmol m-2 s-1 (E). Chlorophyll content values ranged between 451.7 and 474.69 mg m-2 with and without irrigation, respectively. Conclusions. Stomatic closure was the earliest response to water deficit, and potato plants showed recovery in gas exchange values after rehydration following stress. Finally, three levels of physiological response were identified: mild, moderate, and severe stress, depending on the intensity and duration of stress, which is useful for future studies and the development of irrigation schedules.

Resumen Introducción. Los parámetros de respuesta fisiológica al estrés por sequía son la conjugación de una serie de atributos de acción lenta o rápida. Las variables de intercambio gaseoso son catalogadas como de respuesta rápida, su nivel de aparición o afección dependen de la interacción entre factores como el genotipo y duración, intensidad y etapa fenológica de ocurrencia del estrés. Objetivo. Identificar los niveles de respuesta fisiológica que presenta Solanum phureja bajo el estrés progresivo por déficit hídrico. Materiales y métodos. El experimento se realizó entre 2019 y 2020, bajo condiciones semi-controladas en el Centro de Investigación Obonuco de la Corporación Colombiana de Investigación Agropecuaria. Se sembraron cuatro cultivares de papa, la mitad del ensayo se mantuvo con riego a capacidad de campo y a la otra parte se le suspendió para inducir estrés por déficit hídrico durante 15 días, luego se rehidrataron; se evaluaron variables de intercambio gaseoso, clorofila y eficiencia fotosintética cada tres días. Resultados. Se presentaron diferencias significativas con los valores máximos de intercambio gaseoso en plantas del tratamiento control con 16,67 µmol m-2 s-1 tasa de fotosíntesis (A); 0,34 mol m-2 s-1 conductancia estomática (gs) 5,5 mmol m-2 s-1 transpiración (E) y en estrés 1,17 µmol m-2 s-1 (A); 0,013 mol m-2 s-1 (gs); 0,29 mmol m-2 s-1 (E). En cuanto al contenido de clorofila, se presentaron valores entre 451,7 y 474,69 mg m-2 con riego y sin riego, respectivamente. Conclusiones. El cierre estomático fue la respuesta más temprana al déficit hídrico, además, las plantas de papa presentaron recuperación de los valores de intercambio gaseoso después del suministro de riego posterior al estrés. Finalmente, se identificaron tres niveles de respuesta fisiológica, estrés leve, moderado y severo, según la intensidad y duración del estrés, lo cual es de utilidad para futuros estudios y planteamientos de calendarios de riego.

Resumen Se propone un nuevo modelo para la educación transfronteriza que promueve la internacionalización inclusiva y sostenible, así como el desarrollo de habilidades de comunicación intercultural que facilitan la colaboración transfronteriza. Se presentan resultados cualitativos de un estudio de caso basado en las experiencias de estudiantes que cursaron una materia universitaria en la que se implementó el Modelo Virtual de Educación Transfronteriza (MVET). Los resultados confirmaron que las y los participantes desarrollaron conocimientos y habilidades que les permitieron desenvolverse en entornos biculturales y binacionales. Este estudio hace importantes aportes tanto al campo de la educación internacional como a la docencia virtual, ya que detalla un modelo fácil de adaptar a las áreas de especialidad de los docentes, así como a los intereses de los estudiantes participantes. Por consiguiente, el modelo posibilita la implementación de proyectos académicos binacionales en diversos contextos institucionales y geográficos.

Abstract The objectives of this study include the proposal of a new transnational education model that promotes inclusive and sustainable internationalization opportunities, as well as the development of intercultural communication skills that facilitate transborder collaboration. The article presents qualitative results from a case study based on students’ experiences with binational courses that implemented the Virtual Model for Transborder Education (MVET, for its acronym in Spanish). The results confirmed that the participants developed knowledge and abilities that prepared them to be able to succeed in bicultural and binational environments. This study makes significant contributions to the fields of international education and virtual teaching as it provides a virtual exchange model that can easily be adjusted to professors’ areas of expertise, as well as students’ interests. Moreover, the model makes possible the implementation of academic collaborations in diverse institutional and geographical contexts.

RESUMEN El objetivo general fue analizar el mecanismo a través del cual la academia puede contribuir al logro de los Objetivos de Desarrollo Sostenible (ODS) en Paraguay. Ante la necesidad de visibilizar esta contribución por parte de la academia, se remarca el propósito del estudio, intercambiar experiencias de cómo puede la academia colaborar al logro de los ODS, la importancia de difundir informaciones relacionadas a los ODS y, sobre todo, indagar el grado de conocimiento de los ODS de personas clave de organizaciones o instituciones de las distintas comunidades de la zona de influencia de la sede Central y las Filiales de la FCE-UNA. El estudio analítico-descriptivo, está basado esencialmente en un trabajo de campo, con relevamiento de datos definida como población objetivo a líderes comunitarios. Los resultados obtenidos permiten afirmar que la visión de los líderes sobre el rol de las universidades para el logro de los ODS en Paraguay, refieren a que su rol es fundamental para el logro de los ODS y también mencionan que su rol es ser nexo con la sociedad para el logro de los ODS. Se concluye que el mecanismo óptimo a través del cual la academia/universidad puede contribuir al logro de los ODS en Paraguay, seria preferentemente incluir el tema de los ODS en el currículo de las facultades y brindar cursos sobre los ODS; otro, además sería elaborar e implementar proyectos en línea de los ODS, al que se agregan, el asesorar a las instituciones responsables del cumplimiento de los ODS.

ABSTRACT The overarching objective was to examine the manner in which academic institutions can contribute to the attainment of the Sustainable Development Goals (SDGs) in Paraguay. In light of the necessity to make this contribution by academia visible, the objective of the study is to facilitate an exchange of experiences on how academia can collaborate to achieve the Sustainable Development Goals (SDGs), the importance of disseminating information related to the SDGs, and, most importantly, to investigate the degree of knowledge of the SDGs among key individuals from organizations or institutions in various communities within the area of influence of the Central Headquarters and the Branches of FCE-UNA. The study is primarily analytical and descriptive in nature, with a particular focus on fieldwork and the collection of data from community leaders. The findings indicate that the leaders perceive the role of universities in achieving the SDGs in Paraguay to be of paramount importance. Furthermore, they assert that their role is to serve as a conduit between society and the achievement of the SDGs. It is thus concluded that the most effective mechanism through which academia/ universities can contribute to the achievement of the SDGs in Paraguay would be to integrate the topic of the SDGs into the curricula of the faculties and to offer courses on the SDGs. Additionally, another avenue for contribution would be the development and implementation of SDG-aligned projects, in collaboration with institutions responsible for achieving the SDGs

Summary: Arbuscular mycorrhizal fungi (AMF) and dark septate endophytes (DSEF) have such an influence on plant development and on the edaphological characteristics and nutrients available in the soil that changes in these communities can drive modifications in the biotic and abiotic variables of an ecosystem, demonstrating the synergetic between species. Given its relevance, the objective of this work was to determine the status of colonization in the roots of three representative herbaceous species of the understory of a community of Abies religiosa (Kunth Schltdl. et Cham.) and Pinus harwegii (Lindl), and to contrast the coexistence of colonizers in three conservation-disturbance scenarios that exemplify the vulnerability situations of a forest ecosystem. A tripartite AMF-HESO-plant interaction is reported by the occurrence of coenocytic hyphae, vesicles, septate hyphae, moniliform cells, and sclerotia. The values of arbuscular mycorrhization exceed 50% and are higher than those found for endophytes (15.7-64.5%). The colonization of both types of fungi, such as AMF sporulation (687 spores 50 g-1 soil in the reforested area), seems to be related to the microclimatic conditions resulting from soil use. The edaphological variables that allow inferring the colonization behavior correspond mainly to available phosphorus, calcium, pH, organic matter, and cation exchange capacity. It is concluded that soil properties, its use, and the type of plants are determinant in the establishment of fungal communities. However, more studies on HESO-plant interaction are needed.

Resumen: Los hongos micorrícicos arbusculares (HMA) y los endófitos septados oscuros (DSEF) tienen tal influencia en el desarrollo de las plantas y en las características edafológicas y nutrientes disponibles en el suelo, que cambios en estas comunidades pueden impulsar modificaciones en las variables bióticas y abióticas de un ecosistema, demostrando la sinergia entre especies. Dada su relevancia, el objetivo de este trabajo fue determinar el estado de colonización en las raíces de tres especies herbáceas representativas del sotobosque de una comunidad de Abies religiosa (Kunth Schltdl. et Cham.) y Pinus harwegii (Lindl), y contrastar la coexistencia de colonizadores en tres escenarios de conservación-perturbación que ejemplifican las situaciones de vulnerabilidad de un ecosistema forestal. Se constata una interacción tripartita AMF-HESO-planta por la aparición de hifas coenocíticas, vesículas, hifas septadas, células moniliformes y esclerocios. Los valores de micorrización arbuscular superan el 50% y son superiores a los encontrados para los endófitos (15.7-64.5%). La colonización de ambos tipos de hongos, como la esporulación de AMF (687 esporas 50 g-1 de suelo en la zona reforestada), parece estar relacionada con las condiciones microclimáticas derivadas del uso del suelo. Las variables edafológicas que permiten inferir el comportamiento de la colonización corresponden principalmente al fósforo disponible, calcio, pH, materia orgánica y capacidad de intercambio catiónico. Se concluye que las propiedades del suelo, su uso y el tipo de plantas son determinantes en el establecimiento de las comunidades fúngicas. Sin embargo, son necesarios más estudios sobre la interacción HESO-planta.

RESUMEN Este artículo presenta los resultados de una experiencia de formación docente enfocada en la lectura, la escritura y la oralidad, realizada por docentes de lengua de la Facultad de Información y Comunicación de la Universidad de la República con otros docentes de la institución. Se fundamenta en dos conceptos: primero, que los docentes de las disciplinas son actores fundamentales en la enseñanza de las prácticas académicas letradas y, segundo, que las prácticas de lectura, escritura y oralidad universitarias, aunque tienen características comunes, son manifestaciones de saberes disciplinarios específicos de cada área. Nuestro objetivo es observar en qué aspectos las inquietudes sobre la enseñanza de la lectura, la escritura y la oralidad de docentes de diferentes asignaturas son comunes y en qué aspectos difieren, así como observar cómo esa preocupación, al ser explicitada, se refleja en la creación de recursos didácticos para la enseñanza en las disciplinas. Los datos fueron recogidos mediante notas de campo durante el intercambio individual con once docentes de diez asignaturas usando cuestionarios de autorreflexión, descriptores de niveles de lectura y escritura, intercambios orales y elaboración de propuestas didácticas. Se realizó un análisis cualitativo de esos registros considerando las variaciones entre asignaturas en cuanto a las inquietudes manifestadas. Los resultados muestran un cuerpo común de preocupaciones relacionadas principalmente con la escritura, en menor proporción con la lectura y, solo en algunos casos, con la oralidad. Muestran, asimismo, que hay inquietudes relacionadas con los saberes de lenguaje específicos de las áreas disciplinarias en algunos docentes. institución conceptos primero segundo universitarias área difieren preocupación explicitada autorreflexión didácticas manifestadas casos Muestran asimismo

ABSTRACT This article presents the results of a teacher training experience focused on reading, writing and orality, carried out by language teachers from the Facultad de Información y Comunicación of Universidad de la República with other teachers from the institution. It is based on two concepts: first, that teachers of the disciplines are fundamental actors in the teaching of literate academic practices and, second, that university reading, writing and oral practices, although they have common characteristics, are manifestations of disciplinary knowledge specific to each area. Our objective is to observe in what aspects the concerns about the teaching of reading, writing and orality of teachers of different subjects are common and in what aspects they differ, as well as to observe how this concern, when made explicit, is reflected in the creation of didactic resources for teaching in the disciplines. The data were collected through field notes during the individual exchange with eleven teachers of ten subjects using self-reflection questionnaires, reading and writing level descriptors, oral exchanges and the development of didactic resources. These records were qualitatively analysed, considering the variations between subjects regarding the concerns expressed. The results show a common body of concerns related mainly to writing, to a lesser extent to reading and, only in some cases, to orality. They also show concerns about specific language knowledge of the disciplinary areas in some teachers. institution concepts first second characteristics area differ concern explicit selfreflection self reflection questionnaires descriptors analysed expressed cases