Resposta da goiabeira à lâmina de água e à adubação nitrogenada

Maciel, José Lins; Neto, José Dantas; Fernandes, Pedro Dantas

doi:10.1590/s1415-43662007000600004

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…Fernandes et al (2002) estudaram a aplicação de subprodutos da agroindústria processadora de goiaba na fertilidade do solo e obtiveram produtividades de 49,4 a 73,6 t ha -1 nas cultivares Rica e Paluma. Maciel et al (2007) verificaram que a goiabeira Paluma submetida a lâminas de irrigação por microaspersão e a adubação nitrogenada apresentaram produtividade máxima de 43 t ha -1 .…”

Section: Methodsunclassified

Produção da goiabeira (Psidium guajava L.) em sistema convencional e orgânico

Malta

Araújo

Medeiros

et al. 2018

Pesquisa Agropecuária Pernambucana

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Section: Methodsunclassified

Produção da goiabeira (Psidium guajava L.) em sistema convencional e orgânico

Malta

Araújo

Medeiros

et al. 2018

Pesquisa Agropecuária Pernambucana

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“…The irrigation was calculated based on the daily evaporation from tank class A, according to the methodology proposed by Maciel;Dantas Neto e Fernandes (2007). The irrigation level applied was a result of the irrigation plus effective precipitation (Pe), the latter being obtained according to Blaney and Criddle (1962).…”

Section: Methodsmentioning

confidence: 99%

Characterization Morphoagronomic of Guava Fruits Under Different Water Depths and Nitrogen Fertlization Levels

Neto¹,

Alves²,

Azevedo³

et al. 2015

Rev. Caatinga

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-The objective of this study was to evaluate the effects of different water depths and nitrogen fertilization levels applied by fertigation on the physical attributes of guava fruits cv. Paluma. The study was carried out taking into account factors water depths (1144, 1465, 1785 and 2106 mm) and nitrogen fertilization levels (50, 100, 150 and 200 kg ha -1 ). The water depths 1730 and 1750 mm increased production and the average weight of guava fruit in, respectively, 25.1 and 31.6%. The applications 178 and 152 kg N ha -1 increased at 67.1% in the production of fruits and 16.3% the average fruit weight. The combined application of 150 kg N ha -1 and 1789 mm of water amounted to 63.3% of the total weight of fruit. The equatorial diameter of the fruit was influenced by individual water depths applied evidencing an increase of up to 26.8%. Already combinations 200 kg N ha -1 and 1746 mm of water increased the longitudinal diameter of the fruits by 18.77%. The application of water depth to 1144 mm, associated with 143 kg N ha -1 gave index of the most satisfactory way to guava fruit. Keywords

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“…The combination of production factors to adjust the return of irrigated crops in economically appropriate levels can be obtained by using mathematical models to predict the productive response of plants to water application (MONTEIRO et al, 2006;MACIEL et al, 2007, OLIVEIRA et al, 2011. These models, known as "water-culture production function", are extensively used in studies of economic analysis.…”

Section: Introductionmentioning

confidence: 99%

Technical and economic analysis of irrigation of asparagus bean in protected environment

Silva¹,

Carvalho²,

Oliveira³

et al. 2013

Eng. Agríc.

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This experiment was conducted in Lavras -state of Minas Gerais (MG), Brazil, in a protected environment, and aims to estimate the irrigation depths that maximize productivity and economic returns in the cultivation of asparagus bean and analyze the economic viability of irrigation management. The experimental delineation was randomized blocks with five treatments and four replications. The treatments consisted of five drip irrigation depths: 40, 70, 100, 130 and 160% of water replacement depth up to field capacity. The depths of water that maximize productivity and economic returns were obtained from the regression model adjusted to productivity data, cost of product relations and water cost. The economic viability was achieved on the benefit/cost ratio basis. The depth with the maximum economic return was estimated in 434.4mm, with a productivity of 35,160.6kg ha -1 , which is economically viable for the cultivation of asparagus bean, with a expected profitability of R$ 1.70 for every real invested. KEYWORDS:Vigna unguiculata spp. sesquipedalis, irrigation management, economic viability, benefit/cost ratio. ANÁLISE TÉCNICA E ECONÔMICA DA IRRIGAÇÃO DO FEIJÃO-DE-METRO EM AMBIENTE PROTEGIDORESUMO: O experimento foi conduzido em Lavras-MG, e teve como objetivo avaliar, técnica e economicamente, o efeito de diferentes lâminas de irrigação aplicadas por gotejamento na produtividade do feijão-de-metro. O delineamento experimental foi em blocos casualizados, com cinco tratamentos e quatro repetições. Os tratamentos constituíram-se de cinco lâminas de irrigação por gotejamento, sendo: 40; 70; 100; 130 e 160 % da lâmina de reposição de água até a capacidade de campo. As lâminas de água que maximizam a produtividade e o retorno econômico foram obtidas a partir do modelo de regressão em função de dados de produtividade, das relações de preço do produto e do custo da água. A viabilidade econômica foi obtida com base na relação benefício/custo. A lâmina de máximo retorno econômico foi estimada em 431,3 mm, com uma produtividade de 35.156,6 kg ha -1 , que é viável economicamente para o cultivo do feijão-de-metro, com uma rentabilidade esperada de R$ 1,7 para cada real investido. PALAVRAS-CHAVE:Vigna unguiculata spp. sesquipedalis, manejo de irrigação, viabilidade econômica, relação benefício/custo.

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Resposta da goiabeira à lâmina de água e à adubação nitrogenada

Cited by 6 publications

References 2 publications

Produção da goiabeira (Psidium guajava L.) em sistema convencional e orgânico

Produção da goiabeira (Psidium guajava L.) em sistema convencional e orgânico

Characterization Morphoagronomic of Guava Fruits Under Different Water Depths and Nitrogen Fertlization Levels

Technical and economic analysis of irrigation of asparagus bean in protected environment

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