Título:	Spatial variability of soil properties and yield of a grazed alfalfa pasture in Brazil.
Autoria:	BERNARDI, A. C. de C. BETTIOL, G. M. FERREIRA, R. de P. SANTOS, K. E. L. RABELLO, L. M. INAMASU, R. Y.
Afiliação:	ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; GIOVANA MARANHAO BETTIOL, CPAC; REINALDO DE PAULA FERREIRA, CPPSE; Karoline Eduarda Lima Santos, USP; LADISLAU MARCELINO RABELLO, CNPDIA; RICARDO YASSUSHI INAMASU, CNPDIA.
Ano de publicação:	2019
Referência:	International Fertilizer Correspondent (e-ifc), n. 56, p. 31-40, mar. 2019.
Conteúdo:	Knowledge of the spatial variability of soil properties and of forage yield is needed for informed use of soil inputs such as variable rate technology (VRT) for lime and fertilizers. The objective of this research was to map and evaluate the spatial variability of soil properties, yield, lime and fertilizer needs and economic return of an alfalfa pasture. The study was conducted in a 5.3 ha irrigated alfalfa pasture in Sao Carlos, SP, Brazil that was directly grazed and intensively managed in a 270-paddock rotational system. Alfalfa shoot dry matter yield was evaluated before grazing. Soil samples were collected at 0-0.2 m depth, and each sample represented a group of 2 or 3 paddocks. Apparent soil electrical conductivity (ECa) was measured with a contact sensor. The cost of producing 1 ha of alfalfa was estimated from the amount of lime and fertilizer needed and was then used to estimate the total cost of production for the dairy system.
Thesagro:	Fertilidade do Solo Medicago Sativa Pastagem
NAL Thesaurus:	Forage yield Fertilizers Geostatistics
Palavras-chave:	Propriedades do solo GIS
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPPSE)