Data/hora: 23/09/2024 22:00:53

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Data corrente: 	17/11/2015	
Data da última atualização: 	15/04/2016	
Autoria: 	TIRITAN, C. S.; BÜLL, L. T.; CRUSCIOL, A. C.; CARMEIS FILHO, A. C. A.; FERNANDES, D. M.; NASCENTE, A. S.	
Afiliação: 	CARLOS S. TIRITAN, UNOESTE; LEONARDO T. BÜLL, UNESP, Botucatu-SP; A. C. CRUSCIOL, UNESP, Botucatu-SP; ANTONIO C. A. CARMEIS FILHO, UNESP, Botucatu-SP; DIRCEU M. FERNANDES, UNESP, Botucatu-SP; ADRIANO STEPHAN NASCENTE, CNPAF.	
Título: 	Tillage system and lime application in a tropical region: soil chemical fertility and corn yield in succession to degraded pastures.	
Ano de publicação: 	2016	
Fonte/Imprenta: 	Soil & Tillage Research, Amsterdam, v. 155, p. 437-447, 2016.	
DOI: 	http://dx.doi.org/10.1016/j.still.2015.06.012	
Idioma: 	Inglês	
Conteúdo: 	The chemical degradation of soils, due to acidity, and erosion processes, resulting from a traditional tillage system method, are one of the main factors responsible for decreasing the productive capacity of tropical pastures. Thus, establishing the crop-livestock integration system (CLIS) by applying lime on surface without disrupting the soil is interest. The objectives of this study were to evaluate the chemical changes in a soil following surface application or incorporation of lime and to determine the effects of liming on plant nutrition, corn (Zea mays L.) grain yields, and various yield components in cultivated areas of degraded Brachiaria decumbens Stapf pasture. A randomized block experimental design with a splitplot arrangement consisting of two management systems (tillage and no-tillage system) and three lime rates (0.0; 2.7 and 5.4 Mg ha -1) was used. The highest reactivity of calcium carbonate was observed after six months of liming, since during the sampling time the level of exchangeable Ca2+ and Mg2+ decreased to 0.05 m depth, and increased Al3+ and soil acidity to 0.3 m. The incorporation of lime did not increase the movement or reaction of the bases in the degraded soil profile. Therefore, surface liming under perennial forage crop residues (B. decumbens Stapf. pasture) provided the best alternative to increase the soil pH index at a depth of up to 0.3 m. Macronutrients uptake by plant, yield components, and corn grain yield were not affected by the application method. However, the use of limestone showed viability to maximize up to 20% in corn productivity, regardless of lime rate. The results suggest that it is possible to ameliorate soil acidity and chemical properties of degraded grassland only by surface application of limestone; however, the strategy is considered effective just for soils with no physical restriction to root development.	
Thesagro: 	Fertilidade do solo; Manejo do solo; Milho; Pastagem; Plantio direto.	
Thesaurus Nal: 	Cations; Soil management; Soil pH; Tropical pastures.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (33753-1) - UPC - AP - DD - 2016 -  - 2016 - DIS