Irrigation management of common bean cultivars with contrasting growth habits

IF 2.6 3区 农林科学 Q1 Agricultural and Biological Sciences Scientia Agricola Pub Date : 2023-04-07 DOI:10.1590/1678-992x-2022-0038
A. P. Coelho, R. T. D. Faria, L. B. Lemos, Maria Albertina Monteiro dos Reis, V. A. Filla, A. M. P. Bertino
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引用次数: 1

Abstract

: A study was undertaken comparing the water requirements of two common bean ( Phaseolus vulgaris L.) cultivars to generate specific recommendations aimed at optimizing water use. To accomplish this work, the agronomic performance, responsiveness to water and water productivity of these two common bean cultivars of determinate and indeterminate growth habits were identified. The 2-year experiment was carried out during the winter growing season in the southeast of Brazil. Cultivars IAC Imperador, with an early season of determinate growth habit, and IPR Campos Gerais, having a mid-season of indeterminate growth habit, were subjected to five irrigation levels (54, 70, 77, 100, and 132 % of the crop evapotranspiration). Water deficit affected agronomic performance, reducing plant height (by up to 29 %), leaf area index (by up to 40 %), soil cover fraction (by up to 28 %), and grain yield (GY - by up to 31 %), in both cultivars. In contrast, excess water was more detrimental to cultivar IAC Imperador. Cultivar IPR Campos Gerais produced 18 % more than GY, showing superior water productivity and response to irrigation depth than IAC Imperador. Out of all the variables evaluated, the soil cover fraction correlated the most with grain yield in both common bean cultivars during the 2-year study. In other words, cover fraction evaluation in common bean allows for estimating crop production potential, which helps producers and technicians in their decision making regarding management practices. Thus, a cultivar directly affects water use in common bean production, thereby suggesting the need for a or water conservation strategy and sustainability of irrigated common bean production.
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不同生长习性普通豆品种的灌溉管理
本研究比较了两种菜豆(Phaseolus vulgaris L.)品种的水分需求,提出了优化水分利用的具体建议。为了完成这项工作,我们鉴定了两个生长习性确定和不确定的普通豆品种的农艺性能、对水的响应性和水分生产力。在巴西东南部的冬季生长期进行了为期2年的试验。采用5个灌溉水平(作物蒸散量的54,70,77,100,132%)分别对季前生长习惯确定的IAC Imperador和季中生长习惯不确定的IPR Campos Gerais进行灌溉。水分亏缺影响了两个品种的农艺性能,降低了株高(高达29%)、叶面积指数(高达40%)、土壤覆盖分数(高达28%)和粮食产量(GY -高达31%)。反之,过量水分对IAC帝王更有害。品种IPR Campos Gerais产量比GY高18%,表现出优于IAC Imperador的水分生产力和对灌溉深度的响应。在所有评估的变量中,在2年的研究中,土壤覆盖分数与两种普通豆品种的粮食产量相关性最大。换句话说,普通豆的覆盖分数评估可以估计作物的生产潜力,这有助于生产者和技术人员制定有关管理实践的决策。因此,一个栽培品种直接影响到普通豆生产中的水分利用,从而表明需要一种节水策略和灌溉普通豆生产的可持续性。
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来源期刊
Scientia Agricola
Scientia Agricola 农林科学-农业综合
CiteScore
5.10
自引率
3.80%
发文量
78
审稿时长
18-36 weeks
期刊介绍: Scientia Agricola is a journal of the University of São Paulo edited at the Luiz de Queiroz campus in Piracicaba, a city in São Paulo state, southeastern Brazil. Scientia Agricola publishes original articles which contribute to the advancement of the agricultural, environmental and biological sciences.
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