Effect of Supplemental Irrigation and Graded Levels of Nitrogen on Cotton Yield and Quality

Sui, Ruixiu; Byler, R. K.; Fisher, Daniel K.; Barnes, Edward M.; Delhom, Christopher D.

doi:10.5539/jas.v6n2p119

Cited by 10 publications

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“…Esse comportamento também foi observado por outros autores, como Wen et al (2013) e Dagdelen et al (2009), que afirmam que muitas características de qualidade das fibras são influenciadas diretamente por variáveis ambientais, como o estresse hídrico. Autores como Sui et al (2014) e Balkcom et al (2006) afirmam que o aumento da irrigação implica em aumento no comprimento da fibra.…”

Section: Resultsunclassified

Efeito Da Irrigação No Rendimento E Qualidade De Fibras Em Cultivares De Algodoeiro Herbáceo

et al. 2015

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RESUMO -Objetivou-se avaliar a produtividade, o rendimento e a qualidade de fibras de cultivares de algodoeiro herbáceo submetidas a diferentes lâminas de irrigação. Durante dois anos consecutivos foi conduzido um experimento de campo na região de Apodi (RN) disposto em parcelas subdivididas com quatro lâminas de irrigação (130, 100, 70 e 40% da evapotranspiração da cultura -ETc) e quatro cultivares de algodoeiro (FiberMax 993, BRS 286, BRS 336 e BRS 335), em delineamento de blocos casualizados com quatro repetições. Foram avaliadas a produtividade, a percentagem e a qualidade das fibras do algodoeiro. Houve diferença significativa para as características avaliadas entre as cultivares e as lâminas de irrigação. A rega com déficit (70 e 40% ETc) ocasionou declínio na produtividade de algodão em caroço, na percentagem e qualidade das fibras. As cultivares FiberMax 993 e BRS 286 apresentaram as maiores produtividades e percentagem de fibras entre as cultivares avaliadas. Com a lâmina de 40% da ETc as cultivares de fibra média (FiberMax 993, BRS 286 e BRS 335) apresentaram fibras curtas, e a cultivar de fibra longa (BRS 336) apresentou fibra média. De forma geral, a redução na qualidade da fibra não foi severa, haja vista a fibra produzida está dentro da faixa de qualidade aceitável pela indústria têxtil nacional, mesmo em condições de déficit hídrico. Dessa forma, a decisão em irrigar o algodoeiro com ou sem déficit hídrico dependerá dos custos da irrigação e do valor de mercado do produto.Palavras-chave: Déficit hídrico. Algodão. Semiárido. EFFECT OF IRRIGATION ON YIELD AND FIBER QUALITY IN COTTON CULTIVARSABSTRACT -This study was conducted to evaluate seed cotton yield, fiber yield, and fiber quality traits of cotton cultivars grown under different irrigation levels in Brazil. The experiment was conducted over two years in the region of Apodi -RN, with sprinkler irrigation. Treatments comprised of 4 irrigation levels i.e., 130, 100, 70 and 40 % of the crop evapotranspiration (ETc) and 4 cotton cultivars i.e., FiberMax 993, BRS 286, BRS 336 and BRS 335. The experimental design was factorial with randomized complete block design and four replicates. Yield, lint percent and fiber quality traits determined were evaluated. Different responses were observed for cultivars at various irrigation levels. Cultivars grown under limited irrigation exhibited a decline in the seed cotton yield, lint percent, and fiber quality. Cultivars with the highest yield and lint percent were FiberMax 993 and BRS 286. Within irrigation level of 40 % ETc, the medium fiber cultivars produced short fibers whereas the long fiber cultivar, BRS 336, produced medium fiber length. Overall, the different levels of water deficits did not significantly affect fiber quality of the four cultivars tested as all fiber quality traits remained acceptable for the domestic textile industry.

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Section: Resultsunclassified

Efeito Da Irrigação No Rendimento E Qualidade De Fibras Em Cultivares De Algodoeiro Herbáceo

et al. 2015

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“…Uncertainty in the amount and timing of precipitation is one of the most serious risks to crop production in the Mississippi Delta. Studies have demonstrated that supplemental irrigation in this humid region could increase crop yield and reduce production risk (Cassel et al, ; Boquet, ; Sui et al, ). Producers in this region have become increasingly reliant on supplemental irrigation to ensure adequate yields.…”

Section: Introductionmentioning

confidence: 99%

Field Study of Variable Rate Irrigation Management in Humid Climates

Sui

Yan

2017

Irrigation and Drainage

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Comparison of variable rate irrigation (VRI) management with uniform rate irrigation (URI) management in soybean and corn crops was studied for 2 years in Stoneville, Mississippi, USA. The experiments were conducted on two 6.7 ha fields. Each of them was equally split into two sectors. VRI management was performed in one sector and URI management in the other. A centre pivot VRI system was used for delivering irrigation water. Soil apparent electrical conductivity (EC) of the fields was used to delineate VRI management zones and create a VRI prescription map. The VRI treatment used 25% less irrigation water and produced 2.8% more yield in soybean and 0.8% more yield in corn than the URI treatment. Irrigation water productivity (WP) of soybean under VRI management was 0.84 kg m−3 which is 31.2% higher than URI. The WP of corn under VRI management was 1.69 kg m−3, 27.1% higher than URI. Yield of the rainfed treatment was significantly lower than the VRI and URI treatments for both soybean and corn in the 2015 season (p < 0.05). Results in this study demonstrated that VRI management was superior to URI in terms of water use efficiency. Copyright © 2017. This article has been contributed to by US Government employees and their work is in the public domain in the USA. Copyright © 2017. This article has been contributed to by US Government employees and their work is in the public domain in the USA.

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“…The occurrence of water stress immediately after flowering and during the phase of fiber elongation can reduce its length, due to the direct connection with physiological mechanisms of cell expansion (Pettigrew, 2004). Other authors, like Sui et al (2014), claim that increasing irrigation leads to an increase in fiber length.…”

Section: Resultsmentioning

confidence: 99%

Fiber quality of upland cotton under different irrigation depths

Sobrinho¹,

Guerra

Araújo

et al. 2015

Rev. bras. eng. agríc. ambient.

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A B S T R A C TAiming to evaluate the effect of irrigation depths on fiber quality of upland cotton, an experiment was conducted from July to December 2010 in Barbalha-CE, Brazil. The treatments consisted of a factorial combination of two upland cotton cultivars (BRS Aroeira and BRS Araripe) and five irrigation depths (260.93, 418.93, 514.21, 711.81 and 894.68 mm), arranged in a split-plot design with four replicates. A line-source sprinkler irrigation system was used and irrigation depth in the control treatment was calculated according to the crop evapotranspiration. The analysed fiber quality variables were: fiber percentage, length, uniformity, short-fiber index, resistance, elongation at rupture, micronaire index, maturity, degree of yellowing, reflectance degree and count strength product (CSP) index. The irrigation depths influenced fiber length, short-fiber index, strength, micronaire index, maturity and reflectance degree. The cultivars influenced fiber percentage, length and color (degree of yellowing). The best results of fiber quality were found with irrigation depths of 514.21 and 418.93 mm for the upland cotton cultivars BRS Araripe and BRS Aroeira, respectively.Qualidade da fibra do algodoeiro herbáceo sob diferentes lâminas de irrigação R E S U M O Objetivando avaliar o efeito da irrigação sobre a qualidade da fibra do algodoeiro, experimento foi conduzido no município de Barbalha, CE, no período de julho a dezembro de 2010. Os tratamentos consistiram da combinação fatorial de duas cultivares de algodoeiro herbáceo (BRS Aroeira e BRS Araripe) e de cinco lâminas de irrigação (260,93; 418,93; 514,21; 711,81 e 894,68 mm). Utilizou-se o delineamento em blocos casualizados dispostos em faixas, com quatro repetições. Foi utilizado um sistema de irrigação por aspersão em linha sendo a lâmina controle (711,81 mm) aplicada em função da evapotranspiração da cultura. As variáveis analisadas foram: percentagem de fibra, comprimento, uniformidade, índice de fibras curtas, resistência, alongamento à ruptura, índice micronaire, maturidade, grau de amarelamento, reflectância e índice de fiabilidade. As lâminas de irrigação influenciaram o comprimento, o índice de fibras curtas, a resistência, o micronaire, a maturidade e a reflectância da fibra. As cultivares influenciaram a porcentagem, o comprimento e a cor da fibra (grau de amarelamento). A cultivar BRS Araripe obteve a melhor qualidade de fibra com a lâmina de irrigação de 514,21 mm e a BRS Aroeira com a de 418,93 mm. Key words:Gossypium hirsutum L. r. latifolium H. water deficit fiber intrinsic characteristics Palavras-chave:Gossypium hirsutum L. r. latifolium H déficit hídrico características intrínsecas da fibra 1 Coteminas S.A.

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Effect of Supplemental Irrigation and Graded Levels of Nitrogen on Cotton Yield and Quality

Cited by 10 publications

References 10 publications

Efeito Da Irrigação No Rendimento E Qualidade De Fibras Em Cultivares De Algodoeiro Herbáceo

Efeito Da Irrigação No Rendimento E Qualidade De Fibras Em Cultivares De Algodoeiro Herbáceo

Field Study of Variable Rate Irrigation Management in Humid Climates

Fiber quality of upland cotton under different irrigation depths

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