Irrigation management of common bean cultivars with contrasting growth habits

A study was undertaken comparing the water requirements of two common bean ( Phaseolus vulgaris L.) cultivars to generate specific recommendations aimed at optimizing use. To accomplish this work, agronomic performance, responsiveness and productivity these determinate indeterminate growth habits were identified. The 2-year experiment carried out during winter growing season in southeast Brazil. Cultivars IAC Imperador, with an early habit, IPR Campos Gerais, having a mid-season subjected five irrigation levels (54, 70, 77, 100, 132 % crop evapotranspiration). Water deficit affected reducing plant height (by up 29 %), leaf area index 40 soil cover fraction 28 grain yield (GY - by 31 both cultivars. In contrast, excess more detrimental cultivar Imperador. Cultivar Gerais produced 18 than GY, showing superior response depth Out all variables evaluated, correlated most study. other words, evaluation allows for estimating production potential, which helps producers technicians their decision making regarding management practices. Thus, directly affects use production, thereby suggesting need or conservation strategy sustainability irrigated production.