Soil water availability for drip-irrigated common bean crop

Edson Fagne Dos Santos,Silvanio Rodrigues Dos Santos,Ignácio Aspiazu,Abner José De Carvalho,Polyanna Mara De Oliveira

doi:10.1590/1983-40632020v5057367

Abstract

ABSTRACT Minimum limits of soil water storage should be established for the irrigation management of crops, in order to satisfactorily provide water to plants. This study aimed to define the soil water availability factor (f factor) that provides the maximum agronomic yield and maximum water-use efficiency for drip-irrigated common bean cultivars. The experiment was carried out in a randomized block design, with four replications. The treatments were arranged in split plots, with the plots consisting of f factors (0.20, 0.35, 0.50, 0.65 and 0.80) and subplots consisting of common bean cultivars (BRS Pérola and BRS Estilo). The use of f factors between 0.30 and 0.35 is recommended for common bean crops to obtain the maximum agronomic yield and maximum water-use efficiency. The BRS Estilo cultivar presents a water-use efficiency 16 % higher than the BRS Pérola.

Highlights

Common bean (Phaseolus vulgaris L.) is one of the most important foods for human consumption in the world (Castro-Guerrero et al 2016)
The treatments were arranged in split plots, with plots consisting of five soil water availability factors ( f factors) ( f1 = 0.20; f2 = 0.35; f3 = 0.50; f4 = 0.65; f5 = 0.80) and subplots consisting of two common bean cultivars (BRS Pérola and BRS Estilo)
The water applied to the common bean crops reached 137.7 mm for each treatment up to the application of the treatments (27 days after sowing (DAS)) (Table 2)

Summary

Introduction

Common bean (Phaseolus vulgaris L.) is one of the most important foods for human consumption in the world (Castro-Guerrero et al 2016). Several studies have shown significant losses in common bean yield due to water deficit (Asfaw & Blair 2014, Ambachew et al 2015, Dipp et al 2017). The common bean sensitivity to water stress and the low water availability and poor rainfall distribution in semiarid regions make the use of irrigation indispensable to meet the water demand of crops. This low availability of water resources increases the need for saving water for a greater use efficiency, as well as its preservation and improvement to ensure the environmental

Objectives

Methods

Results