Estimation irrigation water requirements with derived crop coefficients for upland and paddy crops in ChiaNan Irrigation Association, Taiwan

Kuo, Sheng-Feng; Ho, Shin-Shen; Liu, Chen‐Wuing

doi:10.1016/j.agwat.2005.08.002

Cited by 92 publications

(41 citation statements)

References 8 publications

(7 reference statements)

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“…where Pc is the effective precipitation (mm), determined by the USDA soil conservation services method (Kuo et al 2006), I the irrigation quota (mm), U the upward capillary flow from the root zone (mm), R the runoff (mm), D w the downward drainage out the root zone (mm), and △S the change of soil water stored in the 0-120 cm layer (mm). The upward and downward flows were measured previously at a nearby field, and these two items have been found to be negligible in this semiarid area.…”

Section: Evapotranspirationmentioning

confidence: 99%

Wheat and maize relay-planting with straw covering increases water use efficiency up to 46 %

Yin

Chai

et al. 2015

Agron. Sustain. Dev.

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Family farms in populated countries must produce sufficient quantities of food to meet the ever-growing population needs. It is unknown whether innovated farming systems can alleviate this issue. Here, we carried out field experiments in arid northwest China from 2009 to 2012 to determine the response of water use, grain yield, and water use efficiency. We integrated crop intensification via relay-planting and straw mulching in the same system. Straw mulching included stubble standing, straw covering, or straw incorporation to the soil. Results show that wheat and maize relay-planting with straw mulching increased yields by up to 153 % versus monoplanting of maize and wheat. Straw covering approached the highest yield. Relay-planting with stubble standing or straw covering decreased water consumption by 4.6 %. The integrated systems increased water use efficiency by up to 46 % compared to conventional mono-planting maize and wheat.

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Section: Evapotranspirationmentioning

confidence: 99%

Wheat and maize relay-planting with straw covering increases water use efficiency up to 46 %

Yin

Chai

et al. 2015

Agron. Sustain. Dev.

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“…CROPWAT is one of the models that are being extensively used in the field of water management throughout the world which is designed by Smith (1991) of the Food Agricultural Organization (FAO). CROPWAT facilitates the estimation of the crop evapotranspiration, crop water requirements and irrigation schedule with different cropping patterns for irrigation planning (Kuo et al, 2006;Gowda et al, Due to overexploitation of available water resources, it has become very important to define appropriate strategies for planning, development and management of water resources of the country. The study aims to develop an optimal irrigation scheduling, to increase crop yield under water scarcity conditions.…”

Section: Introductionmentioning

confidence: 99%

Water Requirements and Irrigation Scheduling of Maize Crop using CROPWAT Model

Bhat¹,

Pandit²,

Khan³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…El programa Cropwat versión 8.0 se utilizó para estimar las necesidades de agua en los cultivos y el sistema de riego basado en el clima, el suelo y datos de los cultivos (Al-Najar, 2011). Se empleó el método de PenmanMontieth de FAO (El Nahry et al, 2010;Kuo et al, 2005) 1964-1977 y 1998-2009. Una comparación directa entre ambas estaciones no sería adecuada para calcular el clima del valle de Vilcabamba, por lo tanto el procedimiento se dividió en dos etapas.…”

Section: Necesidades De Agua En Los Cultivosunclassified

Mejora en los calendarios de cultivo para agricultura de secano en ceja de selva

Meseth

2010

Sci. agropecu

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ResumenEste trabajo tuvo como objetivo mejorar el manejo del agua para la agricultura en Vilcabamba y similares regiones en la ceja de selva, mediante eficientes calendarios de cultivo que permitan satisfacer las necesidades de agua utilizando agricultura de secano, a fin de maximizar el rendimiento de los cultivos. Para ello se llevó a cabo dos estudios de campo durante la temporada seca en septiembre de 2012 y la temporada de lluvias en febrero de 2013 para medir el caudal de ríos y canales; asimismo se analizaron 19 muestras del suelo, presentando texturas franco y franco arenoso. Se utilizó datos del clima, cultivos y suelo para calcular las necesidades de agua en los cultivos y las necesidades de riego con el programa Cropwat, indicando que la evapotranspiración de cultivos es baja debido a la humedad y temperatura fría. Los cultivos no requieren riego durante la temporada de lluvias, de diciembre a abril, sin embargo durante la temporada seca existen necesidades de riego, con una capacidad de flujo máximo de 1,72 l s -1 en mayo. La capacidad de flujo puede ser satisfecha por riachuelos y manantiales con caudales de 2 a 6 l s -1 en la misma temporada. Los resultados de la investigación indican que es posible practicar la agricultura de secano, regando la tierra antes de la siembra para que el rendimiento de los cultivos no sea afectado, caso contrario algunas cosechas como verduras y papas se reducirían en un 4,7% y 1,4% respectivamente. Para minimizar estos efectos, se sugiere sembrar ambos cultivos un mes más tarde de lo acostumbrado, adaptando su periodo de crecimiento a la temporada de lluvias.Palabras clave: calendarios de cultivo, necesidades de agua en los cultivos, agricultura de secano, manejo del agua, ceja de selva. AbstractThis work was aimed to improve the water management for agriculture by applying efficient crop schedules in Vilcabamba and similar areas of the high jungle, which can satisfy most of the water requirements with rainfed agriculture to maximize the crops yield. For this purpose, two field practices were carried out during the dry (September 2012) and wet season (February 2013) to measure rivers and canals flows with the velocity/area method; 19 soil samples were collected on-site and analyzed, presenting prevalent sandy loam and loam textures. Cropwat program was used to estimate crop water requirements and scheme irrigation requirements, resulting in a maximum flow capacity of 1.72 l s -1 in May, during the dry season. The flow capacity can be satisfied, since small ditches convey approximately 2 to 6 l s -1 on the same season. The research findings indicate that rainfed farming can be practised, yet an initial pre-irrigation needs to be applied, for crops should not be water stressed. However, if soil is not pre-irrigated the production can be affected, with vegetables and potato crop yields being reduced by 4.7% and 1.4% respectively. To minimize these effects, both crops are suggested to be sowed one month later, adapting their growth period to the rainy season.

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Estimation irrigation water requirements with derived crop coefficients for upland and paddy crops in ChiaNan Irrigation Association, Taiwan

Cited by 92 publications

References 8 publications

Wheat and maize relay-planting with straw covering increases water use efficiency up to 46 %

Wheat and maize relay-planting with straw covering increases water use efficiency up to 46 %

Water Requirements and Irrigation Scheduling of Maize Crop using CROPWAT Model

Mejora en los calendarios de cultivo para agricultura de secano en ceja de selva

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