Data/hora: 11/06/2024 04:10:44

Provedor de dados: 	86	
País: 	Brazil	
Título: 	Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system	
Autores: 	Yagi,Renato.	
Data: 	2018-07-01	
Ano: 	2018	
Palavras-chave: 	Consolidated no-tillage system; Soil acidity; Soil management; Soil organic matter; Superficial liming; Water deficit.	
Resumo: 	Abstract: The objective of this work was to evaluate the residual effects of occasional soil tillage in a 17-year-old, no-tillage system, associated with liming and nitrogen fertilization, on the crop yields and chemical properties of a very clayey Oxisol in the South of Brazil. A randomized complete block design in split-split plots was used, with two soil managements (with or without plowing), two liming treatments (with or without the required dose to raise base saturation to 70%), five N doses applied on side-dress (0, 1, 2, 4, and 6 times the recommended amounts), and four replicates. A rotation system was used with corn and soybean in the summer, and with wheat and black oats in the winter. The residual effects of occasional soil tillage in a consolidated no-tillage system do not supplant those of liming applied on soil surface, in periods of water deficit, which subsidizes the recommendation to maintain the system consolidated. Excess N fertilization in no-tillage, with liming applied only on soil surface, may harm wheat yield, acidifying the topsoil and leaching Mg2+ to the subsurface soil layers. Without liming, soil acidification is more intense with N fertilization, which, however, favors the accumulation of organic matter on soil surface in a consolidated no-tillage system.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000700833	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/s0100-204x2018000700007	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.53 n.7 2018	
Fonte: 	info:eu-repo/semantics/openAccess