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|Research center of Embrapa/Collection:||Embrapa Pesca e Aquicultura - Artigo em periódico indexado (ALICE)|
|Type of Material:||Artigo em periódico indexado (ALICE)|
|Authors:||OLIVEIRA, S. M. de|
PIEROZAN JUNIOR, C.
LAGO, B. C.
ALMEIDA, R. E. M. de
TRIVELIN, P. C. O.
FAVARIN, J. L.
|Additional Information:||SILAS MACIEL DE OLIVEIRA, ESALQ; CLOVIS PIEROZAN JUNIOR, INSTITUTO FEDERAL DE EDUCAÇÃO, Palmas-TO; BRUNO COCCO LAGO, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; PAULO CESAR OCHEUZE TRIVELIN, CENA; JOSE LAERCIO FAVARIN, ESALQ.|
|Title:||Grain yield, efficiency and the allocation of foliar N applied to soybean canopies.|
|Publisher:||Scientia Agricola, v. 76, n. 4, p. 305-310, jul./ago. 2019.|
|Description:||Soybean [Glycine max (L.) Merr.] grain yield is closely associated with the level of optimal nitrogen (N) supply, especially during the reproductive stages. Foliar fertilization with low rates of N have been considered as a strategy for furnishing additional N and enhancing grain yields. Field studies using 15N tracer were conducted over two growing seasons to investigate the impact of foliar N fertilization on grain yield, plant N content, the amount of N derived from fertilizer (NDFF) and N recovery efficiency (NRE). Four foliar N rates (0, 1300, 2600 and 3900 g ha?1) were supplied by two equal split applications at the R1 and R3 stages. Foliar N fertilization of soybean canopies did not affect grain yield, grain N content, shoot N content nor plant N content. Total NDFF was increased from 0.7 to 2.0 kg ha?1 across the N rates. Nonetheless, NRE was unaffected by foliar N fertilization, which averaged 53 %. Soybean plants allocated the same amount of N fertilizer to both grains and shoots. No significant effects of low rate foliar N fertilization were registered on soybean grain yield nor plant N content, despite considerable N fertilizer recovery by plant organs.|
|Appears in Collections:||Artigo em periódico indexado (CNPASA)|