Publicação: Root-system of peanuts as affected by phosphorus fertilization
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Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
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Acesso aberto
Resumo
There have been some responses of peanut roots to phosphorus. An experiment was carried out to study peanut root growth and distribution as related to P in the soil. The cultivars Tatu, Oira and Tup4 and the lines FCA 170 and FCA 265 were grown with or without P fertilization with 80 kg P2O5/ha, as triple superphosphate. The fertilizer was applied in the seed furrows. There was higher P contents in the 0-10 cm layer of the soil 36 days after P application. At 66 and 98 days after application, P contents of the soil were increased by fertilization down to 15 cm. There was no response of peanut roots to P fertilization. Oira showed the highest root lenght density and Tatu the lowert. There was a root concentration the first 15 cm of the soil. Oira with the largest root system showed the lowest P absorption, and Tatu, with the smallest root system absorbed as much P as the others.
Descrição
Palavras-chave
ARACHIS HYPOGAEA, CULTIVARS, ROOTS, PHOSPHORUS
Idioma
Espanhol
Como citar
Pesquisa Agropecuaria Brasileira. Brasilia: Empresa Brasil Pesq Agropec, v. 29, n. 11, p. 1669-1673, 1994.
