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Previous issue date: 2015-02-25 === Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq === O trabalho teve o objetivo de avaliar a germinação e o desempenho inicial de plantas
de feijão miúdo (Vigna unguiculata (L.) Walp.) a partir de sementes recobertas com
agrominerais. As sementes foram recobertas com fosfato natural itafós, gabro e
mistura dos dois agrominerais em níveis equivalentes a 5, 10, 15, 20 e 25 g/100 g de
sementes, utilizando como adesivo acetato de polivinila (PVA). A germinação das
sementes tratadas foi determinada em laboratório seguindo o protocolo descrito nas
Regras para Análise de Sementes para a cultura do feijão miúdo. O experimento a
campo foi conduzido em delineamento experimental em blocos casualizados, com
quatro repetições cujas variáveis avaliadas foram: emergência de plântulas aos 5, 8 e
17 dias após a semeadura, altura de plantas aos 17, 24, 30, 38, 45, 54 e 66 dias após
a semeadura, número de folhas por ramo, massa seca de folhas, massa seca de
ramos e massa seca total. Os tratamentos não afetaram a germinação das sementes.
Os agrominerais gabro e mistura do fosfato natural itafós e gabro superaram a
testemunha no número de folhas e na massa seca total. === The current work set out to evaluate the germination and early performance of cowpea
plants (Vigna unguiculata (L.) Walp.) through the use of seeds covered in
agrominerals. The seeds were covered in itafós natural phosphate, gabbro and a
mixture of both agrominerals in quantities equivalent to 5, 10, 15, 20, and 25g/100g of
seeds. Polyvinyl acetate (PVA) was utilized as adhesive. The germination of the
treated seeds was determined in laboratory following the protocol of the International
Rules for Seed Testing for the cultivation of cowpea. The field experiment was carried
out under experimental design in randomized blocks, with four repetitions whose
variables were: the emergence of seedlings at the 5th, 8th and 17th day after seeding;
plant height at the 17th, 24th, 30th, 38th, 45th, 54th and 66th day after seeding; number
of leaves per bough; dry mass of leaves and boughs and dry mass total. The treatment
did not affect the seeds germination. The agrominerals gabbro and the mixture of itafós
natural phosphate and gabbro surpassed the control treatment in the number of leaves
as well as in overall dry mass.
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