Título:	Doses and application seasons of potassium in the soybean-corn succession in soil with improved fertility in the Southwest of Goiás.
Autoria:	XAVIER, W. D. CARNEIRO, L. F. GUIMARÃES, C. M. SILVA, J. V. de S. PINTO, F. A. RIBEIRO, D. O. SOUSA, V. S. RESENDE, A. V. de
Afiliação:	Warlles Domingos Xavier, Goiano Federal Institute; Leandro Flávio Carneiro, Universidade Federal de São João Del-Rei; Claudinei Martins Guimarães, Universidade Federal de Viçosa; João Vitor de Souza Silva, Goiano Federal Institute; Flávio Araújo Pinto, Universidade Federal de São João Del-Rei; Diego Oliveira Ribeiro, Goiano Federal Institute; Vinicius Silva Sousa, Universidade Federal de Goiás; ALVARO VILELA DE RESENDE, CNPMS.
Ano de publicação:	2019
Referência:	Journal of Agricultural Science, v. 11, n. 4, p. 307-317, 2019.
Conteúdo:	Soils with improved fertility indicate opportunities for more rational use of fertilizers. The objective of this study was to evaluate the management of potassium fertilization in the succession of soybean-corn in soil with improved fertility, in the southwestern region of the state, Goiás. The experiment was set in 5×3 factorial scheme, arranged in randomized blocks with four repetitions. The treatments consisted of the combination of potassium doses (0, 40, 80, 120 and 160 kg ha-1 of K2O) and seasons of application (100% of the dose in pre-planting, 100% of the dose in coverage and in installments with 50% of the dose in pre-planting + 50% in coverage). The best performance of soybean, considering grain yield, was obtained with the parceled application of 80 kg ha-1 of K2O, with production of 3.6 Mg ha-1. The highest corn production was obtained with the anticipated application of 160 kg ha-1 of K2O in soybean. In the management of potassium fertilization in improved fertility soil in the soybean-corn succession, the parceled application of 120 kg ha-1 of K2O kept the available K reserve in the soil constant when compared to its initial content.
Thesagro:	Grão Rendimento Plantio Direto Glycine Max Soja
Palavras-chave:	Ciclagem de nutrientes
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPMS)