Rotação cultural feijão caupi/milho utilizando-se águas de salinidades diferentes

Bezerra, Anna Karine Paiva; Lacerda, Claudivan Feitosa de; Hernández, Fernando Felipe Ferreyra; Silva, Flávio Batista da; Gheyi, Hans Raj

doi:10.1590/s0103-84782010000500012

Cited by 50 publications

(62 citation statements)

References 14 publications

(14 reference statements)

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“…The average values of NP were similar to those found by Bezerra et al (2010) in a crop rotation of V. unguiculata and maize, with salinity levels of 1.2 dS m -1 (7.46), and 3.3 dS m -1 (5.62).…”

Section: Resultssupporting

confidence: 83%

“…This results confirm those found by Murtaza, Ghafoor and Qadir (2006), evaluating the use of sodium saline water for cotton (Gossypium hirsutum L.) and wheat (Triticum spp.) irrigation, and Bezerra et al (2010), evaluating salt accumulations in the soil over growth and yield of a crop rotation of V. unguiculata and maize, who found increases in salt concentrations in the soil with increasing salt concentrations in the water used for irrigation.…”

Section: Resultsmentioning

confidence: 99%

“…The leaching fractions caused progressive reductions in the soil salinity levels throughout the experiment (Table 2), despite the increased salt concentrations in both soil layers caused by irrigation with saline water, indicating that it is an alternative to control the gradual increase of salts in the root zone (ASSIS JÚNIOR, 2007;SILVA et al, 2011), and contribute to the tolerance to problems caused by salinity in irrigated agriculture (RITZEMA et al, 2008;BEZERRA et al, 2010), especially in places where the precipitation and the availability of good quality water for irrigation is scarce. (SiBSC, 2006), with and without leaching fractions of 14% and 28%, found reductions in soil salts with the leaching fractions, and a more efficient salt leaching from the root zone with the leaching fraction of 28%.…”

Section: Resultsmentioning

confidence: 99%

“…Assis Júnior et al (2007) and Bezerra et al (2010) stated that the use of saline water for irrigation of Vigna unguiculata caused accumulation of salts in the soil and reduced vegetative growth and grain yield. Santana, Silveira and Vieira (2009) evaluated the effects of irrigation with saline water (0.1, 1.0, 2.5, 4.0 and 5.5 dS m -1 ) on common bean and found reductions in grain yield, number of grains per pod and number of pods per plant.…”

Section: Introdutionmentioning

confidence: 99%

“…The adequate use of this technique, which has low cost and easy access to farmers, allows the rational use of lower quality water, contributing to reduce soil degradation processes, income loss and production quality caused by salinity (BEZERRA et al, 2010).…”

Section: Introdutionmentioning

confidence: 99%

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PRODUCTION COMPONENTS OF Vigna unguiculata (L. Walp) IRRIGATED WITH BRACKISH WATER UNDER DIFFERENT LEACHING FRACTIONS

Carvalho

Silva

et al. 2016

Rev. Caatinga

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-The objective of this work was to evaluate the production components of cowpea (Vigna unguiculata L. Walp) subjected to irrigation with brackish water and different leaching fractions. The experiment was conducted in a lysimeter system of the Department of Agricultural Engineering of the Federal Rural University of Pernambuco, Recife campus. The treatments, consisting of two water salinity levels (ECw) (1.2 and 3.3 dS m -1 ) and five leaching fractions (0, 5, 10, 15 and 20%), were evaluated using a completely randomized design in a 2x5 factorial arrangement with four replications. The variables evaluated were: number of pods per plant, 100-grain weight, number of grains per pod, grain and shoot dry weight, grain yield and harvest index. The soil salinity increased with increasing salinity of the water used for irrigation, and reduced with increasing leaching fraction. The salinity of the water used for irrigation influenced only the variables number of pods per plant and grain yield. The estimated leaching fractions of 9.1% and 9.6% inhibited the damage caused by salinity on the number of pods per plant and grain yield, respectively. Therefore, the production of V. unguiculata irrigated with brackish water, leaching salts from the plant root environment, is possible under the conditions evaluated.Keywords: Cowpea. Yield. Water salinity. Irrigation management. COMPONENTES DE PRODUÇÃO DE Vigna unguiculata (L. Walp) IRRIGADO COM ÁGUA SALOBRA SOB FRAÇÕES DE LIXIVIAÇÃORESUMO -Objetivou-se, com este trabalho, avaliar os componentes de produção do feijão-caupi (Vigna unguiculata) submetido à irrigação com água salobra e frações de lixiviação. O estudo foi conduzido em sistema de lisimetria no Departamento de Engenharia Agrícola da Universidade Federal Rural de Pernambuco, Campus Recife. Os tratamentos consistiram em dois níveis de salinidade da água (CEa -1,2 e 3,3 dS m -1 ) e de cinco frações de lixiviação (0, 5, 10, 15 e 20%), em delineamento inteiramente casualizado em esquema fatorial 2 x 5, com quatro repetições. As variáveis avaliadas foram: número de vagens por planta, massa de 100 grãos, número de grãos por vagem, biomassa seca de grãos e da parte aérea, produtividade de grãos e índice de colheita. A salinidade do solo aumentou com a salinidade da água de irrigação, mas foi reduzida com a fração de lixiviação. Exceto o número de vagens por planta e a produtividade de grãos, as demais variáveis não foram influenciadas pelas salinidades da água de irrigação. As frações de lixiviação estimadas de 9,1 e 9,6% inibem os danos provocados pela salinidade sobre o número de vagens por planta e produtividade de grãos, respectivamente. Nas condições estudadas, é possível se produzir feijão-caupi irrigado com água salobra sob lixiviação de sais do ambiente radicular das plantas.Palavras-chave: Feijão-caupi. Rendimento. Salinidade da água. Manejo da irrigação.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%