Viabilidade técnica e econômica da produção de ervilha (Pisum sativum L.) cultivada sob diferentes lâminas de irrigação

Oliveira, Eduardo Carvalho; Carvalho, Jacinto de Assunção; Rezende, Fátima Conceição; Freitas, Wellington Alves de

doi:10.1590/s0100-69162011000200012

Cited by 23 publications

(33 citation statements)

References 12 publications

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“…It happens because these environments provide a more propitious climate for crop development throughout the year, lessen problems with pests and diseases, protect against climate changes, lower leaching and reduce fertilization costs, enabling thus greater production compared to open environments. However, it is of upmost importance the use of irrigation to reach highest yields (OLIVEIRA et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Greenhouse crisphead lettuce grown with mulching and under different soil water tensions

et al. 2016

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ABSTRACT:Proper irrigation management is important both to enable adequate water supply and to minimize problems with diseases, nutrient leaching and unnecessary water and power wastes. Thus, this study aimed at improving irrigation management in greenhouses. For that reason, we assessed the effect of various water tensions on yield performance of crisphead lettuce, Raider-Plus cv., grown with mulching. KEYWORDS:Lactuta sativa, irrigation management, protected environment, soil covering. PRODUÇÃO DE ALFACE-AMERICANA EM CULTIVO PROTEGIDO UTILIZANDO MULCHING, SOB DIFERENTES TENSÕES DE ÁGUA NO SOLORESUMO: O manejo correto da irrigação é importante não apenas por possibilitar que a irrigação supra adequadamente as necessidades hídricas das plantas e por minimizar problemas com doenças e lixiviação de nutrientes, mas também como gastos desnecessários com água e energia. Visando a definir critérios para o manejo da irrigação, este trabalho teve como objetivo avaliar o efeito de diferentes tensões de água no solo sobre o co mportamento produtivo da alface-americana, cv. Raider-Plus, em ambiente protegido, com uso de mulching. O experimento foi conduzido em casa de vegetação na Universidade Federal de Lavras. Os tratamentos foram constituídos de cinco tensões de água no solo: 12; 25; 35; 45 e 70 kPa. Os resultados permitiram concluir que, para a obtenção de valores máximos de produtividade total e comercial, 66 e 50 t ha -1 , a reposição da lâmina evaporada deve ser realizada quando a tensão de água no solo atingir 12 kPa, representando consumo total de 167,25 mm. As variáveis altura de plantas e circunferência da cabeça comercial tiveram valores máximos alcançados quando se utilizou a tensão de 12 kPa. A eficiência no uso da água apresentou resposta quadrática aos tratamentos, sendo que a maior eficiência no consumo de água foi verificada nos tratamentos intermediários (35 e 45 kPa), atingindo valores de 579,87 e 471,71 kg ha -1 mm -1 , respectivamente.

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Section: Introductionmentioning

confidence: 99%

Greenhouse crisphead lettuce grown with mulching and under different soil water tensions

et al. 2016

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“…The crop production functions used in the study were obtained through regression analyses between yield (dependent variable) and irrigation depths (independent variable) for lettuce (Lima et al, 2009), carrot (Oliveira Neto, 2013), beet (Carvalho et al, 2011) and eggplant (Lima et al, 2012). For carrot, two cultivation periods were evaluated: period 1 (June to September 2010 -cycle of 89 days) and period 2 (August to November 2011 -cycle of 93 days).…”

Section: Methodsmentioning

confidence: 99%

Water use efficiency and economic return of fresh vegetable in organic cultivation

Carvalho

Pinto

Monte³

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe optimization in the use of irrigation is a necessity due to water scarcity and the increasing demand for food. The objective of this study was to evaluate the effect of different irrigation depths on the economic efficiency of lettuce, eggplant, beet and carrot, cultivated in an organic production system. The evaluations were performed based on production functions obtained in field experiments conducted from 2006 to 2011, and survey of prices of products and inputs, determining the irrigation depths corresponding to the maximum gross profit and the maximum water use efficiency. Additionally, the relative yield reduction was evaluated for different percent increments in the economically optimal irrigation depth. It was observed that the crops have differences between the irrigation depths of maximum economic efficiency and maximum water use efficiency, ranging from 22.2 mm (lettuce) to 149.7 mm (eggplant). The application of water above the irrigation depth of maximum economic efficiency led to yield and profit reductions, whose magnitude depends on the response of the crop.Eficiência de uso da água e rendimento econômico no cultivo orgânico de olerícolas R E S U M OA otimização do uso da irrigação é uma necessidade em virtude da escassez de água e do aumento da demanda por alimentos. Objetivou-se, neste trabalho, avaliar o efeito de diferentes lâminas de irrigação sobre a eficiência econômica dos cultivos da alface, berinjela, beterraba e cenoura conduzidas em sistema orgânico de produção. As avaliações foram realizadas com base em funções de produção obtidas em experimentos de campo conduzidos de 2006 a 2011 e no levantamento de preços dos produtos e de insumos determinando-se as lâminas correspondentes ao máximo lucro bruto e à máxima eficiência no uso da água. Adicionalmente, avaliou-se a redução relativa da produtividade para diferentes incrementos percentuais na lâmina economicamente ótima. Observou-se que as culturas apresentam diferenças entre as lâminas de máxima eficiência econômica e do uso da água variando de 22,2 mm (alface) a 149,7 mm (berinjela). A aplicação de água em quantidade superior à lâmina de máxima eficiência econômica proporcionou redução da produtividade e do lucro cuja magnitude depende da resposta da cultura.

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“…Both quantity and quality of fruits are adversely affected by it (Doorembos and Kassam 2000). The effects of water deficit on production have been studied by several authors in greenhouses and in field conditions (Biblico et al, 2010;Oliveira et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Drip irrigation is the most recommended for the cultivation of pepper plants since it tends to provide water application with a greater uniformity, fertigation efficiency, phytosanitary control, less labor and production of fruits with a better quality (Ribeiro et al, 2010;Oliveira et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Productive viability of sweet pepper (Capsicum chinense [J.] cv. Lupita) using water management with different soil water tensions

Guerino¹,

Lima²,

Silva³

et al. 2017

Aust J Crop Sci

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Green pepper has a great prominence in the cuisine of Pará. This plant is cultivated using a low technological level along its production chain. However, in the last few years, there has been an increase in planted area due to a national and international recognition of this vegetable, because it is a substitute for bell pepper. This study aims to evaluate the effects of different soil water tension on the productivity of green pepper cv. Lupita. The experiment design was randomized blocks with four replications. The treatments consisted of five soil water tensions: 15, 25, 35, 45 and 55 kPa as indicative for the moment of irrigation. It is concluded that, to obtain high yield and large fruit sizes (longitudinal and transversal diameter), irrigation should be carried out at the moment when soil water tension is close to 33 kPa at a depth of 0.20 m. To obtain a better efficiency in water use, the irrigation should be performed at a tension close to 30 kPa.

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Viabilidade técnica e econômica da produção de ervilha (Pisum sativum L.) cultivada sob diferentes lâminas de irrigação

Cited by 23 publications

References 12 publications

Greenhouse crisphead lettuce grown with mulching and under different soil water tensions

Greenhouse crisphead lettuce grown with mulching and under different soil water tensions

Water use efficiency and economic return of fresh vegetable in organic cultivation

Productive viability of sweet pepper (Capsicum chinense [J.] cv. Lupita) using water management with different soil water tensions

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