Efecto De Tres Frecuencias De Riego Sobre La Calidad De La Fibra en Cuatro Cultivares De Algodón (Gossypium Hirsutum L.) Tipo Upland

Méndez-Natera, Jesús Rafael; Salazar-Brito, Ronald S.; Merazo-Pinto, José Fernando; Gil-Marín, José Alexander; Khan-Prado, Luis

doi:10.4067/s0718-34292008000100006

Cited by 6 publications

(6 citation statements)

References 3 publications

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“…** and *Significant at 0.01 and 0.05 probability level, respectively; ns -Not significant at 0.05 probability level; DF -Degrees of freedom; CV -Coefficient of variation; Means followed by the same letters do not differ by Tukey test No significant effect was observed on fiber percentage for the applied irrigation depths, which corroborates the results obtained by Cordão Sobrinho et al (2007), Méndez-Natera et al (2008), Basal et al (2009), Onder et al (2009 and Hussein (2011). According to the experimental results, these authors showed that fiber percentage is not affected by different irrigation depths, since it is determined by the genetic characteristics of the cultivars.…”

Section: Resultssupporting

confidence: 82%

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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Section: Resultssupporting

confidence: 82%

Fiber quality of upland cotton under different irrigation depths

Sobrinho¹,

Guerra

Araújo

et al. 2015

Rev. bras. eng. agríc. ambient.

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“…In Venezuela, different studies have focused on the identification of foreign varieties or those developed in the national cotton breeding program of INIA (Instituto Nacional de Investigaciones Agropecuarias) that are adapted to specific edaphic and climatic conditions, maximizing expression of Agronomy 2019, 9, 349 2 of 9 fiber yield and quality [5][6][7]. These studies have been developed based on spatial arrangement less than or equal to 62,500 pl ha −1 .…”

Section: Introductionmentioning

confidence: 99%

Sowing Density Effects in Cotton Yields and Its Components

et al. 2019

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Evaluation of sowing density is an important factor for achieving maximum yields without affecting other agronomic traits. Field experiments were conducted during three consecutive years (2008, 2009 and 2010) to determinate the effect of four sowing density (62,500; 83,333; 100,000 and 142,857 pl ha−1) on yields and its components of two cotton varieties, ‘Delta Pine 16′ and ‘SN-290′ in Venezuela. The traits evaluated were lint yield, boll weight, number of seeds per boll, 100-seed weight, and fiber content. Highly significant differences (p ≤ 0.01) were observed among genotypes, sowing density and their interactions for all traits. Sowing density was not affected by year factor. High lint yield was found in ‘SN-290′ (4216.2 kg ha−1) at 100,000 pl ha−1; and in ‘Delta Pine 16′ (3917.3 kg ha−1) at 83,333 pl ha−1. The highest sowing density (142,857 pl ha−1), decrease lint yield and yield components in the genotypes. The highest boll weight was obtained by ‘SN-290′ with 6.4 g in average. All sowing densities evaluated resulted in lint percentages above 40%. Cotton lint yield was positively correlated with all yield components. Our results indicate that highest lint yields could be obtained with sowing densities between 83,333 and 100,000 pl ha−1 depending upon varieties used across savannahs of Venezuela.

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“…En este trabajo no hubo efecto del tratamiento con agua caliente; sin embargo, algunos autores (Méndez Natera, Ysavit Marcano, & Merazo, 2007) indican que la inmersión en agua caliente durante un tiempo relativamente corto podría utilizarse para predecir la viabilidad de las semillas, no obstante que estos procedimientos presentaron una disminución de la germinación a medida que aumentaban los tiempos de inmersión en agua. González y Mendoza (2008) concluyen que la aplicación de agua a 80 °C por 2 min produjo incrementos significativos en la germinación con respecto a la semilla sin tratar.…”

Section: Discussionunclassified

Germinación de Ferocactus townsendianus Britton & Rose. con escarificación de semillas sometidas a diferentes tiempos de almacenamiento

Guillén-Trujillo¹,

Avalos-Castro

Villavicencio³

et al. 2020

IyCUAA

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Se evaluó el efecto del tiempo de almacenamiento y seis tratamientos de escarificación sobre la germinación de semillas de Ferocactus townsendianus. Dos procedimientos a base de ácido sulfúrico (H2SO4), dos con ácido clorhídrico (HCl), uno con agua y uno testigo fueron comparados usando un modelo lineal con mediciones repetidas en el tiempo y contrastes ortogonales. El H2S04 y HCl aumentaron la germinación (P <0.05) en relación con el testigo, en las semillas con 1, 2, 3, 6 y 9 años de almacenamiento, siendo en términos generales mejor el H2S04, este tratamiento también aumentó la germinación (P <0.05) de las semillas con 11 años de almacenamiento. El resto de las semillas no presentó diferencias (P >0.05) entre los procedimientos. El realizado con agua tuvo una germinación nula.

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Efecto De Tres Frecuencias De Riego Sobre La Calidad De La Fibra en Cuatro Cultivares De Algodón (Gossypium Hirsutum L.) Tipo Upland

Cited by 6 publications

References 3 publications

Fiber quality of upland cotton under different irrigation depths

Fiber quality of upland cotton under different irrigation depths

Sowing Density Effects in Cotton Yields and Its Components

Germinación de Ferocactus townsendianus Britton & Rose. con escarificación de semillas sometidas a diferentes tiempos de almacenamiento

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