| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Phosphorus utilization by corn as affected by green manure, nitrogen and phosphorus fertilizers
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| Autores: |
Silva,Edson Cabral da
Muraoka,Takashi
Franzini,Vinícius Ide
Villanueva,Felipe Carlos Alvarez
Buzetti,Salatiér
Moreti,Dolorice
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| Data: |
2012-08-01
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| Ano: |
2012
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| Palavras-chave: |
Zea mays
Cover crop
Isotopic dilution
Oxisol
Radioisotope
Urea
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| Resumo: |
The objective of this work was to evaluate the utilization by corn plants of P from triple superphosphate fertilizer labeled with 32P (32P‑TSP), and of P from soil as affected by N rates and by the green manures (GM) sunn hemp (Crotalaria juncea) and millet (Pennisetum glaucum). The experiment was carried out using pots filled with 5 kg Oxisol (Rhodic Hapludox). A completely randomized design was used, in a 4x4x2 factorial arrangement, with four replicates. The treatments were: four P rates as TSP (0, 0.175, 0.350, and 0.700 g P per pot); four N rates as urea (0, 0.75, 1.50, and 2.25 g N per pot); and sunn hemp or millet as green manure. The additions of N and P by the GM were taken into account. After grain physiologic maturation, corn dry matter, P contents, accumulated P, and P recovery in the different treatments were measured. 32P‑TSP recovery by corn increased with N increasing rates, and decreased with increasing rates of 32P‑TSP. The mineral fertilizer provides most of the accumulated P by corn plants. The recovery of 32P‑TSP by corn was 13.12% in average. The green manure species influence the assimilation of 32P‑TSP by the plants.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000800016
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2012000800016
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.47 n.8 2012
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| Direitos: |
info:eu-repo/semantics/openAccess
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