RESUMO Este trabalho objetivou verificar a influência do tipo e doses de adubo de liberação lenta (ALL) e da percentagem de ocupação da bandeja pelos tubetes (OB), durante o pré-viveiro, no crescimento, nutrição e partição de matéria seca de mudas de dendezeiro. O experimento foi constituído de 16 tratamentos, em esquema fatorial, compreendendo dois tipos de ALL (Osmocote® e Basacote mini), duas doses (0 e 3 kg/m3 de substrato) e quatro OB (100%, 66%, 50% e 25 %), no delineamento em blocos casualizados, com quatro repetições. Ainda, houve um tratamento adicional em sacos plásticos contendo 1,5 dm3 de solo. Sementes pré-germinadas de dendezeiro foram colocadas em tubetes contendo substrato comercial e em sacos contendo solo. Aos três meses, todas as mudas foram transplantadas para sacos plásticos de 40 x 40 cm contendo solo avaliando a altura de planta e diâmetro do coleto, a matéria seca e o teor de N, P, K, Ca e de Mg. Aos 10 e 16 meses de idade, foram avaliados a altura e diâmetro e aos 16 meses a matéria seca. A adição de ALL no pré-viveiro foi fundamental para a formação final das mudas. A OB no pré-viveiro não influenciou o crescimento em altura e diâmetro aos 10 e 16 meses de idade. A altura das mudas produzidas em tubetes foi superior, aos 10 meses de idade, com o Osmocote®, comparada ao Basacote mini. Aos 16 meses, não houve diferença de crescimento entre as plantas com os diferentes tipos de ALL, havendo somente efeito da dose utilizada.
ABSTRACT This research had as objective to verify the influence in growth, nutrition and dry matter partition in oil palm seedling by type and dosages of slow release fertilizers (SRF) and percentage of tray occupation by plastic containers during pre-nursery. The experiment consisted of 16 treatments, in factorial scheme: two types of SRF (Osmocote® e Basacote mini), two dosages (0 and 3 kg/m3) and four schemes for the container distribution used to attain 100%, 66%, 50% and 25% of tray occupation. An additional treatment composed of 15 x 15 cm plastic bags filled with soil was added. Pre-germinated seeds of oil palm were put in plastic containers of 120 cm3 containing substratum and in plastic bags containing soil. After three months, the seedlings were transplanted to 40 x 40 cm plastic bags containing soil. At this time, height, diameter, dry matter and concentration of N, P, K, Ca and Mg were evaluated. After 10 months, seedlings were evaluated for height and diameter and after 16 months, seedlings had the height, diameter and dry matter weight evaluated. Addition of SRF was fundamental for seedlings development. Different percentages of tray occupation by containers during pre-nursery did not influence height and diameter of oil palm seedlings at 10 and 16 months old. The evaluation after 10 months showed that plants fertilized with Osmocote® were higher than those fertilized with Basacote mini. The evaluations after 16 months showed that plants fertilized during the pre-nursery had higher height, diameter and leaflets, leaf, aboveground and total dry matter than
