Results 211 to 220 of about 63,467 (267)
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Correcting Midseason Crop Coefficients for Climate
Journal of Irrigation and Drainage Engineering, 2015AbstractIt is well known that crop coefficients are not necessarily transferrable from one location to another, for a variety of reasons.
Guerra, E. +3 more
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CROP COEFFICIENTS IN SIMPLIFIED HYDROPONIC SYSTEMS
Acta Horticulturae, 2006This study was carried out during the spring growing season of 2003 in order to determine tomato crop evapotranspiration and to develop crop coefficients under different irrigation treatments in open and closed systems. The experiment was conducted in a non-heated plastic covered greenhouse.
Tuzel, I. H., Meric, K. M., Tuzel, Y.
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Crop coefficients of major crops in South India
Agricultural Water Management, 1994Abstract Crop coefficients (Kc) were estimated for cotton, sorghum and millet for tropical South India based on lysimeter measured actual evapotranspiration (ET) and reference crop ET computed by the modified Penman method. The estimated crop coefficients were 0.46, 0.70, 1.01, and 0.39 in the four crop stages for cotton.
S. Mohan, N. Arumugam
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Crop Coefficients: A Literature Review
Journal of Irrigation and Drainage Engineering, 2016AbstractRecently presented climate change scenarios include increasing demand for water, due to both increase in temperature and variations in precipitation pattern.
GUERRA, ELISA +2 more
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Crop coefficients for peanut evapotranspiration
Agricultural Water Management, 1988Abstract Meteorological and soil moisture data were collected from field sites in Caddo County, Oklahoma, during the 1984 and 1985 irrigation seasons. Analysis of alfalfa (Medicago sativa L.) water use data enabled calibration of the modified Penman equation for reference crop evapotranspiration ( et ).
Ronald L Elliott +3 more
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Crop Coefficients for Drip-irrigated Processing Tomatoes
2004, Ottawa, Canada August 1 - 4, 2004, 2004Efficient management of drip irrigation systems requires reasonable estimates of crop evapotranspiration (ET), normally calculated as the product of a crop coefficient and a reference crop ET. However, a review of literature revealed mid-season crop coefficients of processing tomatoes to range from 1.10 to 1.25.
Blaine R. Hanson, Donald M. May
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Crop Coefficients of Some Selected Crops of Andhra Pradesh
Journal of The Institution of Engineers (India): Series A, 2015Precise information on crop coefficients for estimating crop evapotranspiration (ETc) for regional scale irrigation planning is a major impediment in many regions. Crop coefficients suggested based on lysimeter data by earlier investigators have to be locally calibrated to account for the differences in the crop canopy under given climatic conditions ...
K. Chandrasekhar Reddy +2 more
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Can crop coefficients improve the economics of irrigated crops?
Acta Horticulturae, 2017Climate and market conditions together with water policies have a large impact on agricultural water use. Evapotranspiration (ET) accounts for most of the water loss from a well-managed, irrigated crop, and the crop coefficient (Kc) method is widely used to estimate ET.
GUERRA, ELISA +3 more
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Use of Crop Canopy Size to Estimate Crop Coefficient for Vegetable Crops
World Environmental and Water Resource Congress 2006, 2006Planting time, plant density, variety, and cultural practices vary widely for horticultural crops. It is difficult to estimate a basal crop coefficient that can incorporate these variations. Canopy cover, as an indicator of intercepted sunlight, is related to crop water use.
Thomas Trout, Jim Gartung
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