2017
DOI: 10.14393/bj-v33n6a2017-37109
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Gas exchanges and production of colored cotton under salt sress and nitrogen fertilization

Abstract: ABSTRACT:This study was conducted with the objective of evaluating the gas exchanges and production components of colored-fiber cotton as a function of irrigation with water of different saline levels and nitrogen (N) doses. The experiment was carried out in drainage lysimeters, filled with eutrophic Regolithic Neosol of sandy loam texture, in the municipality of Campina Grande-PB, Brazil. The statistical design was randomized blocks and the treatments resulted from the combination of five levels of irrigation… Show more

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Cited by 9 publications
(8 citation statements)
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“…Similar results were obtained by G. S. Lima et al (2017) in a study evaluating the gas exchange of colored cotton as a function of irrigation with waters of different levels of salinity (ECw from 5.1 to 9.1 dS m -1 ). These authors observed that the increase in water salinity levels did not limit the entry of CO 2 in the substomatal chamber of cotton plants, and the highest Ci was observed in plants grown with an ECw of 9.1 dS m -1 .…”
Section: Resultssupporting
confidence: 86%
See 1 more Smart Citation
“…Similar results were obtained by G. S. Lima et al (2017) in a study evaluating the gas exchange of colored cotton as a function of irrigation with waters of different levels of salinity (ECw from 5.1 to 9.1 dS m -1 ). These authors observed that the increase in water salinity levels did not limit the entry of CO 2 in the substomatal chamber of cotton plants, and the highest Ci was observed in plants grown with an ECw of 9.1 dS m -1 .…”
Section: Resultssupporting
confidence: 86%
“…According to Prazeres et al (2015), the decrease in transpiration is directly related to the decrease in stomatal conductance, because with smaller stomatal openings there will be a reduction in water loss to the atmosphere, thus maintaining cell turgor. Reductions in plant transpiration in response to salt stress have been observed by several authors (Lúcio et al, 2013;G. S. Lima et al, 2017) and have been attributed to stomatal and non-stomatal causes associated with the osmotic and toxic effects of excess salts (Lúcio et al, 2013).…”
Section: Resultsmentioning
confidence: 93%
“…In a study developed with colored-fiber cotton cv. BRS Rubi under salt stress (ECw: 5.1 to 9.1 dS m -1 ), Lima et al (2017) also found that an increase in ECw levels resulted in a quadratic decrease in iWUE, with a minimum value of 3.66 [(μmol CO 2 m -2 s -1 ) (mmol H 2 O m -2 s -1 ) -1 ] obtained in plants subjected to the water salinity level of 9.1 dS m -1 . According to these authors, the reduction in iWUE was caused by the low availability of water in the soil due to osmotic effects that induce stomatal closure and, consequently, a decline in leaf transpiration and CO 2 assimilation.…”
Section: Resultsmentioning
confidence: 99%
“…Colored-fiber cotton stands out as one of the crops with high economic and social potential in the semi-arid region of Northeast Brazil, where it contributes to employment and income generation through the fixation of labor in rural areas. It is also highlighted for its environmental appeal, as it dispenses with the industrial dyeing step, which produces a large volume of waste, compromising the environment (Silva et al, 2017;Lima et al, 2017). Despite the agricultural potential of this region for cotton farming, its irregular rainfall distribution at times with prolonged periods of drought and rain events concentrated in some months of the year limits the development and production of crops (Soares et al, 2023).…”
Section: Introductionmentioning
confidence: 99%
“…A expressiva redução da eficiência instantânea de carboxilação observado nas folhas de capim elefante roxo a partir da aplicação de 37,5 kg de N ha -1 , possivelmente é um reflexo das altas taxas fotossintéticas (Figura 2A), em relação à depleção ocorrida na concentração interna de carbono das plantas (Figura 2B), pois, se o CO 2 interno diminui há um incremento no consumo de CO 2 nos cloroplastos, devido ao aumento da atividade fotossintética, com isso a relação A/Ci também será elevada (LIMA et al, 2017(LIMA et al, , p.1500.…”
Section: Resultsunclassified