Eficiência Do Uso Da Água E Nitrogênio Na Produção De Melão

Monteiro, Rodrigo Otávio Câmara; Costa, Raimundo Nonato Távora; Leão, Moisés Custódio Saraiva; Aguiar, José Vanglésio de

doi:10.15809/irriga.2008v13n3p367-377

Cited by 8 publications

(12 citation statements)

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“…These results disagree with those of Mo-rais et al (2008), who evaluated the response of watermelon plants at different water depths and nitrogen levels in the Curu Valley in Pentecoste, Ceará, Brazil, and found that different water depths and nitrogen doses affected WUE. However, the present results corroborate those of Monteiro et al (2008) for melon plants in the municipality of Pentecoste, Ceará, who found that the water depths, but not the nitrogen doses, significantly affected WUE. The maximum WUE (21.11 kg m -3 ) corresponds to the water depth 110.42 mm.…”

Section: Resultssupporting

confidence: 91%

“…The WUE values corroborate those found by Monteiro et al (2008), who evaluated WUE and NUE in melon crops in Pentecoste, Ceará, at the water depths of 232.7, 334.7, 422.1, and 567.8 mm and nitrogen doses of 0, 75, 150, and 300 kg ha -1 , and found that WUE decreased as the water depths increased but was not significantly affected by nitrogen. Moreover, WUE was highest using 232.7 mm of water.…”

Section: Resultssupporting

confidence: 88%

“…These results demonstrate that the efficient use of water and nitrogen promote less waste, improve the rational use of production factors, and increase the profits of irrigated crops (ANDRADE JÚNIOR et al, 2006;FERREIRA;PAVANI;BASTOS, 2013). Monteiro et al (2008) studied melon plants, another Cucurbitaceae, and observed that WUE decreased as the water depth increased, and WUE was highest using 232.7 mm of water. However, these authors observed that the water depths and nitrogen doses, as well as the interaction between these two factors, did not affect NUE by the crop.…”

Section: Introductionmentioning

confidence: 87%

“…Water use efficiency (WUE) affects crop yield according to the irrigation depth applied during the growth cycle whereas nitrogen use efficiency (NUE) can improve crop yield as the nitrogen levels are increased. Understanding these efficiencies and their implication in the productive responses of crops is fundamental to optimize the use of production factors (MONTEIRO et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…It is necessary to optimize production factors, especially water use, and prioritize production per cubic meter instead of production per unit area (MONTEIRO et al, 2008). Melo et al (2010) analyzed a watermelon culture under different irrigation regimes and observed that a water depth of 266 mm promoted a maximum fruit yield of 52,400 kg ha -1 and WUE of 19.6 kg m -3 , and the latter was lower than the value obtained at a water depth of 204.67 mm (23.2 kg m -3 ).…”

Section: Introductionmentioning

confidence: 99%

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Watermelon Yield and Efficiency of Use of Water and Nitrogen

et al. 2019

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The evaluation of the yield of crops and their efficiency of use of water and nitrogen is essential to optimize the management of production factors. The objective of this study is to evaluate the effect of irrigation regimes and nitrogen doses in fertigation on fruit yield and efficiency of use of water and nitrogen by the Top Gun watermelon hybrid. The study was conducted in Bom Jesus, Piauí, Brazil, from August 4 to October 15, 2015. The study used a completed randomized block design with four repetitions, five irrigation depths (110.17, 156.86, 221.16, 268.87, and 317.09 mm), and five doses of nitrogen in fertigation (0, 50, 100, 150, and 200 kg ha-1 applied as urea). Fruit yield and water use efficiency were not affected by nitrogen doses; however, there was a significant interaction of the factors for the efficiency of nitrogen use. The highest yield (39,549.45 kg ha-1) was obtained using 233.48 mm of water during the growth cycle. The water depth that promoted the maximum efficiency of water use was 110.42 mm, and nitrogen use was most efficient using 232.21 mm of water and 50 kg ha-1 of nitrogen.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Watermelon Yield and Efficiency of Use of Water and Nitrogen

et al. 2019

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Tensão De Água No Solo E Doses De Nitrogênio Para a Cultura Do Feijoeiro Comum

Santana¹,

Silveira²,

Camargos³

et al. 2009

R_I

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TENSÃO DE ÁGUA NO SOLO E DOSES DE NITROGÊNIO PARA A CULTURA DO FEIJOEIRO COMUM Márcio José de Santana1; Amanda Letícia da Silveira1; Carlos Roberto de Camargos2; José Carlos Braga21Instituto Federal de Educação, Ciência e Tecnologia, Triângulo Mineiro, Campus Uberaba, Uberaba, MG, marciosantana@cefetuberaba.edu.br2Centro Universitário de Patos de Minas, Faculdade de Ciências Agrárias, Patos de Minas, MG 1 RESUMO Este experimento foi conduzido no campus II do Centro Universitário de Patos de Minas, MG, com o objetivo de avaliar o rendimento do feijoeiro comum, submetido a diferentes tensões de água no solo e doses de nitrogênio. Os tratamentos constaram de quatro tensões de água no solo (10 kPa, 30 kPa, 50 kPa e 70 kPa) e quatro doses de nitrogênio (50 kgha-1, 100 kg ha-1, 150 kg ha-1 e 200 kg ha-1). O delineamento foi em blocos casualizados, em esquema fatorial de 4x4 com três repetições. Foram avaliados: produtividade, número de vagens por planta, número de grãos não colhidos, número de vagens verdes e a eficiência do uso da água. Dentre os resultados pode-se constatar que a maior produtividade física foi verificada quando a irrigação foi efetuada com tensão de 22 kPa e dose de N de 130,5 kg ha-1; a maior eficiência do uso da água foi verificada quando a irrigação foi reposta com a tensão de 37 kPa. UNITERMOS: irrigação, tensiometria, eficiência da água. SANTANA, M.J. de; SILVEIRA, A.L. da; CAMARGOS, C.R. de; BRAGA, J.C. SOIL WATER TENSION AND NITROGEN LEVELS FOR THE COMMON BEAN PLANT 2 ABSTRACT This experiment was conducted in the Campus II of the Centro Universitário de Patos de Minas, MG, with the objective of evaluating the yield of common bean plant, submitted to different soil water tension and nitrogen levels. The treatments consisted of four water tension in soil (10 kPa, 30 kPa, 50 kPa e 70 kPa) and four nitrogen (50 kg ha-1, 100 kg ha-1, 150 kg ha-1 e 200 kg ha-1). The experimental design was randomized blocks in factorial scheme of 4x4 with tree repetitions. Crop yield, number of pod per plant, number of unharvested grains, number of green pods and water efficiency cropping were evaluated. Among the results the physical productivity was when the irrigation was effectuated by tension of 22 kPa and N of 130.5 kg ha-1; the greatest value for water use efficiency was irrigation tension of 37 kPa. KEYWORDS: irrigation, tensiometry, efficiency of water.

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Yield components and water use efficiency in coriander under irrigation and nitrogen fertilization

Angeli

Delazari

Nick

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TAmong the determining factors of yield, nitrogen (N) fertilization and the correct supply of water play an important role in the quality and yield aspects of coriander. Therefore, the aim of this study was to evaluate the yield components and the water use efficiency (WUE) in coriander subjected to different depths and N doses. A completely randomized design in split plot was used. Water depths were applied in the plots at the rates of 25, 50, 75, 100 and 125% of the Required Real Irrigation (RRI). N doses were distributed within the subplots at the following proportions: 50, 100 and 150% of the recommendation for the crop (70 kg ha -1 ). The N dose of 94 kg ha -1 and irrigation depth of 115% of RRI promoted the greatest yield (29.0 t ha -1 ) and number of bunches (29 bunches m -2 ). The highest number of leaves per plant was obtained with the N dose of 103.2 kg ha -1 and irrigation depth of 68% of the RRI. The maximum plant height (43 cm) was obtained with N dose of 105 kg ha -1 and irrigation depth of 121% of RRI. The highest WUE in coriander (71 kg m -3 ) occurred at the irrigation depth of 26% of RRI and N dose of 105 kg ha -1 .Componentes de produção e eficiência do uso d'água em coentro sob irrigação e adubação nitrogenada R E S U M O Dentre os fatores determinantes da produção a adubação nitrogenada e o suprimento adequado de água desempenham papel importante nos aspectos de qualidade e de produção do coentro. Portanto, objetivou-se avaliar os componentes de produção e a eficiência do uso da água (EUA) do coentro quando submetido a diferentes lâminas de irrigação e doses de nitrogênio. Foi empregado o delineamento inteiramente casualizado em esquema de parcelas subdivididas. As lâminas de irrigação foram aplicadas nas parcelas nos níveis: 25, 50, 75, 100 e 125% da Irrigação Real Necessária (IRN). Já as doses de nitrogênio foram distribuídas dentro das subparcelas nas seguintes proporções: 50, 100 e 150% da recomendação para a cultura (70 kg ha -1 ). A dose de nitrogênio e a lâmina de água que proporcionaram a maior produtividade e número de molhos foram de 94 kg ha -1 e 115% da IRN, resultando em 29,0 t ha -1 e 29 molhos m -2 . O maior número de folhas por planta foi obtido com a dose de 103,2 kg ha -1 de N e 68% da IRN. A altura máxima alcançada foi de 43 cm, com 105 kg ha -1 de N e 121% IRN. A maior EUA no coentro ocorreu para a lâmina de irrigação de 26% da IRN e a dose de nitrogênio de 105 kg ha -1 , o que resultou em uma EUA de 71 kg m -3 .

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Eficiência Do Uso Da Água E Nitrogênio Na Produção De Melão

Cited by 8 publications

References 4 publications

Watermelon Yield and Efficiency of Use of Water and Nitrogen

Watermelon Yield and Efficiency of Use of Water and Nitrogen

Tensão De Água No Solo E Doses De Nitrogênio Para a Cultura Do Feijoeiro Comum

Yield components and water use efficiency in coriander under irrigation and nitrogen fertilization

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