Results 221 to 230 of about 10,359 (261)

Evaluation of evapotranspiration for agricultural crops

2015 IEEE International Conference on Computational Intelligence and Computing Research (ICCIC), 2015
Today's world is in safe of secure environment but really we are in need of healthy food and chemical-free environment which is free from pollution and harmful pesticides. This paper is to project the aspects of geographical information system(GIS) in agricultural field for effective yield and efficient use of water for crops and it helps as a guide to
S. Priyadharshini, R. Aroul Canessane
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Crop evapotranspiration of chilli in the tropics

Communications in Soil Science and Plant Analysis, 1994
Abstract The rate of crop evapotranspiration though can be predicted theoretically but the actual field study would give a more accurate data. Result from a simple lysimeter study showed that the daily rate of actual crops evapotranspiration, ETa of chilli (Capsicum annum) under the tropical condition was in the range between 4.94–7.72 mm. Their actual
Ayob Katimon, Zainal Abidin Idris
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Crop coefficients for peanut evapotranspiration

Agricultural Water Management, 1988
Abstract 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, Sam L Harp, Gerald D Grosz, Michael A Kizer   +3 more
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Neural computing modeling of the reference crop evapotranspiration

Environmental Modelling & Software, 2012
Reference crop evapotranspiration (ET"o) estimation is of importance in irrigation water management for the calculation of crop water requirements and its scheduling, in rainfall-runoff modeling and in numerous other water resources studies. Due to its importance, several direct and indirect methods have been employed to determine the reference crop ...
Adebayo J. Adeloye, Rabee Rustum, Ibrahim D. Kariyama   +2 more
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PREDICTION SALINE WATERTABLE CONTRIBUTION TO CROP EVAPOTRANSPIRATION

Acta Horticulturae, 2002
Disposal of drain water from irrigated areas in and regions has become a significant problem. Methods are needed to minimise the volume of water requiring disposal. Shallow groundwater may represent a substantial resource by capillary rise in flat, low-lying areas, but may also represent a threat to sustainability where salinity is high. Experiments in
Konukçu, F, Sener, M
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Estimates of Crop Evapotranspiration in Egypt

Water and Environment Journal, 1988
SYNOPSISThe WORK DESCRIBED is part of a feasibility study for the rehabilitation of the Old Lands irrigation areas in Egypt. Despite much previous work there is still some controversy regarding the consumptive use of water by crops in Egypt. The present study utilized the Energy Balance (sometimes also called Bowen Ratio) method to determine the actual
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AN EVAPOTRANSPIRATION MODEL ADAPTED TO WATER STRESSED CROPS

Acta Horticulturae, 2000
International ...
Rana, Gianfranco, Mastrorilli, M., Katerji, Nader   +2 more
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[Calculation of crop evapotranspiration in greenhouse].

Ying yong sheng tai xue bao = The journal of applied ecology, 2007
Based on Penman-Monteith equation, a simplified formula for calculating the crop evapotranspiration in greenhouse was deduced by introducing the parameter of crop canopy height and modifying the item of aerodynamics related to wind velocity. The deductive procedure was analyzed theoretically, and the formula was validated with meteorological data.
Xin-ming, Chen, Huan-jie, Cai, Hong-xing, Li, Jian, Wang, Wen-juan, Du   +4 more
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Reference Crop Evapotranspiration from Temperature

Applied Engineering in Agriculture, 1985
MEASURED lysimeter evapotranspiration of Alta fescue grass (a cool season grass) is taken as an index of reference crop evapotranspiration (ETo). An equation is presented that estimates ETo from measured values of daily or mean values of maximum and minimum temperature. This equation is compared with various other methods for estimating ETo.
null George H. Hargreaves, null Zohrab A. Samani   +1 more
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Evapotranspiration and Crop Coefficients of Wheat and Sorghum

Journal of Irrigation and Drainage Engineering, 2000
Wheat and sorghum are important cereal crops next only to rice in India and several other Asian countries. Improved water management requires accurate scheduling of irrigation, which in turn requires an accurate measurement of daily crop evapotranspiration ETc.
N. K. Tyagi, D. K. Sharma, S. K. Luthra
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