Yield components of bean in different sowing times and harvests

Abstract

The yield of bean crops in Brazil and, in particular, in Rio Grande do Sul can be increased with the understanding of the environment variables that limit the yield potential and delimit the climatic risks zoning. The objective of this study was to evaluate and define, within the climatic conditions of the region of Campos de Cima da Serra, the bean yield components in three sowing seasons and harvest. The experiment was conducted at two sites, Bom Jesus and Vacaria, during the harvest years of 2009/10, 2011/12 and 2012/13, using the cultivars Fepagro 26, IPR Tiziu, IPR Tuiuiu, BRS Pérola, IPR 126, BRS Jalo, IAC Formoso, IPR Uirapuru, IPR Tangara, IAPAR 81 and IAPAR Siriri. The cultivars were planted in three sowing times, mid-November mid-December and mid-January, a randomized block with four replications. The data were submitted to analysis of variance, complemented by Tukey test (p ≤ 0.05).Based on the results, it can be concluded that the mid-December sowing time gave higher bean yields, however, some cultivars may also have higheryield even if sown was done until mid-January, showing that it is possible to extend the recommendation of sowing period for this culture in the Campos de Cima da Serra region.