2017
DOI: 10.1590/1983-21252017v30n419rc
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Cotton Response to Water Deficits at Different Growth Stages

Abstract: -Water deficit at certain cotton growth stages can cause severe damage to crop development, affecting physiological processes and reducing reproductive structures, with consequent yield losses. The objective of this study was to evaluate the response of cotton cultivars under water deficit applied at different stages of the crop cycle. We compared the number of bolls per meter, cotton yield, and water use efficiency for eight different cotton cultivars under a water deficit of 15 days. We selected the followin… Show more

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Cited by 56 publications
(29 citation statements)
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“…2 and 3). This is consistent with the findings of several other studies, which reported that water deficit imposed during peak bloom stage significantly affected physiological processes and caused severe damage to crop development, thereby reducing yield (Simao et al, 2013;Snowden et al, 2014;Bordovsky et al, 2015;Zonta et al, 2017). In contrast, in dry years, simulated yield with the LMH treatment was consistently higher than that with the LHM treatment, except for the first two termi- nation dates.…”
Section: Ideal Irrigation Termination Periods Based On Seed Cotton Yieldsupporting
confidence: 91%
“…2 and 3). This is consistent with the findings of several other studies, which reported that water deficit imposed during peak bloom stage significantly affected physiological processes and caused severe damage to crop development, thereby reducing yield (Simao et al, 2013;Snowden et al, 2014;Bordovsky et al, 2015;Zonta et al, 2017). In contrast, in dry years, simulated yield with the LMH treatment was consistently higher than that with the LHM treatment, except for the first two termi- nation dates.…”
Section: Ideal Irrigation Termination Periods Based On Seed Cotton Yieldsupporting
confidence: 91%
“…1A) in the B1, F1, M1 and C1 stages, the ETr and ETm are larger than the precipitations, occurring water deficit in this period, and that the culture responded with greater root growth, as a strategy to dispose of water and maintain productivity, as Yeates [16] indicates. These results corroborate with Zonta et al [17] who observed that when the water deficit occurs during the crop cycle, productivity losses are only significant if it occurs at 15 days after the F1/M1 stages.…”
Section: Weather Datasupporting
confidence: 92%
“…Esse evento aconteceu no ano de 2016, quando a falta de umidade no solo após a emissão da primeira maçã e da primeira flor causou severos danos na produção do algodão. No entanto, quando essa falta de umidade no solo se dá nas fases de crescimento inicial, após a emissão do primeiro botão floral e após a abertura do primeiro capulho, a perda de produtividade não é significativa, fato ocorrido no ano de 2017 (GWATHMEY;LEIB;MAIN;ZONTA et al, 2017).…”
Section: Genótiposunclassified