Coated potassium choride in residual effect on winter common bean irrigated in Cerrado region

• Autor(a) principal: Rodrigues, Mateus Augusto de Carvalho
• Data de Publicação: 2013
• Outros Autores: Buzetti, Salatiér, Maestrelo, Paulo Ricardo, Lino, Ana Carolina Marostica, Teixeira Filho, Marcelo Carvalho Minhoto, Andreotti, Marcelo, Garcia, Cássia Maria de Paula
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/10153
• topic: Phaseolus vulgaris; Adubação potássica; Feijão; Fertilizante revestido; Doses de potássio; Sistema plantio direto.; Fertilidade do Solo e Adubação; Phaseolus vulgaris; Potassium fertilization; Common bean; Coated fertilizer; Potassium doses; No-tillage system.

In order to maintain the nutrients available to plants have been studied controlled release fertilizers. In this context, the objective was to evaluate the residual effect of doses of potassium chloride, coated or not, applied in the corn crop, regarding the crop components and grains yield of irrigated winter common bean, cultivated in followed, in Cerrado region. The experiment was conducted in Selvíria – MS, Brazil, 51°22’ west longitude and 20°22’ south latitude, in a clayey Oxisol, in 2009 and 2010. A randomized block design with four repetitions was used, disposed in a factorial scheme 4 x 2, being: four K2O doses (0, 40, 80 and 120 kg ha-1) and two potassium sources (potassium chloride and coated potassium chloride by polymers) applied at sowing in the corn crop. The coated potassium chloride by polymers have the same residual effect as conventional KCl, because it provides results similar for the K and chlorophyll leaf contents, crop components and grains yield of winter common bean irrigated. The increment of potassium doses in the previous crop (corn) have residual effect, because it influenced positively the number of grains per plant in 2009 and increased linearly the chlorophyll leaf content and the grains yield of winter common bean irrigated in 2010, regardless of the source used for K.