Abstract Since the emergence in August 2019 of portions of varying sizes of crude oil on several beaches in the Northeast region of Brazil, various studies have been conducted to identify the source of the disaster and estimate the damage caused. This article aims to contribute to this scientific effort in order to describe an extensive mapping that used Remote Sensing data of the impacted areas and its correlation with socioeconomic typology of the municipalities directly affected. The research was based on the list of 201 oiled beaches published on October 28th, 2019 in Technical Note from the Brazilian Institute of the Environment and Renewable Natural Resources (IBAMA, 2019). Applying the Supervised Classification to images from the MSI/Sentinel-2 sensor, a methodology for beach cartography was defined, then geographical sections were subsequently classified and quantified by thematic classes. This thematic mapping fostered to obtain a proxy of the possible impacted areas up to that date, generating an “Atlas of Beaches Affected by Oil” with 402 maps of the affected beaches, which is available on the Joaquim Nabuco Foundation website. This mapping is unprecedented and it becomes important for the environmental monitoring of these areas. This article was prepared from a request for the special edition of the AABC journal.

Este trabalho objetivou avaliar seis isolados de Trichoderma harzianum no controle de Fusarium oxysporum f.sp. phaseoli em sementes, e seu efeito no crescimento inicial do feijoeiro comum. Os isolados foram inicialmente confrontados in vitro com o patógeno em testes de cultura pareada e antibiose a 25ºC. Sementes sadias e artificialmente infectadas pelo patógeno foram microbiolizadas com 2 mL de suspensões dos antagonistas (2,5 x 10(8) conídios mL-1) para cada 100 g de sementes, em rolo de papel germtest a 20 e 25°C. Os percentuais de incidência do patógeno e de plântulas normais foram avaliados aos sete e nove dias, respectivamente. Em casa de vegetação, os isolados foram aplicados a 5 x 10(9) conídios 500 g-1 de substrato autoclavado, com avaliação do comprimento das raízes e parte aérea das plantas 11 dias após o semeio (12 plantas tratamento-1). Todos os isolados apresentaram antagonismo in vitro contra o patógeno. Os isolados CEN202, CEN234, CEN238, CEN240 foram superiores à testemunha no controle de F. oxysporum em sementes, reduzindo entre 35 e 51% da incidência do patógeno e proporcionando entre 73 e 81% de plântulas normais. O comprimento total das plantas com tratamento CEN239 (37,43 cm) foi superior aos demais, cujo comprimento variou entre 27,84 e 33,95 cm.

The objective of this study was to evaluate the antagonistic capacity of six isolates of Trichoderma harzianum against Fusarium oxysporum f.sp. phaseoli on infected seeds and its effect on the early stages of growth in bean plants. The isolates were also evaluated in dual culture assays and under in vitro antibiosis at 25ºC. Healthy and infected seeds were treated with 2 mL 100 g-1 seeds of the antagonist suspensions (2.5 x 10(8) conidia mL-1) for healthy evaluation using blotter method at 20 and 25°C. The percentages of pathogen incidence and normal seedlings were evaluated at seven and nine days, respectively. The isolates were applied at 5 x 10(9) conidia 500 g-1 of sterilized substrate in greenhouse. After 11 days, roots and shoots of the bean plants were measured (12 plants treatment-1). Every isolate of T. harzianum presented in vitro antagonism against the pathogen. The strains CEN202, CEN234, CEN238 and CEN240 offered better control of F. oxysporum on seeds than the positive check, causing a reduction between 35 and 51% in pathogen incidence and 73-81% of normal seedling emergence. The total length of the plants treated with CEN239 (37.43 cm) was longer than the other treatments, with length varying between 27.84 and 33.95 cm.