Results 271 to 280 of about 77,578 (312)

Spatial Estimation of Regional Crop Evapotranspiration

Transactions of the ASAE, 1995
Current methods of computing regional crop evapotranspiration (ET), the prime variable in estimating irrigation demand, largely ignore the spatial variability of ET parameters, thus introducing errors. In this research, a method was developed to estimate regional ET while considering the spatial variability of parameters.
null M. A. Hashmi, null L. A. Garcia, null D. G. Fontane   +2 more
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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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Calculations of evapotranspiration from crop surface temperature

Agricultural Meteorology, 1974
Abstract Two techniques for extrapolating detailed micrometeorological or lysimetrical measurements of evapotranspiration to field other than intensely instrumented experimental sites are presented and discussed. The first approach utilizes net radiation, air temperature, vapor pressure and wind speed data and crop resistance in the calculations ...
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Forecasting weekly reference crop evapotranspiration series

Hydrological Sciences Journal, 1995
Abstract Evapotranspiration (ET) is an important process in the hydrological cycle and needs to be accurately quantified for proper irrigation scheduling and optimal water resources systems operation. The time variant characteristics of ET necessitate the need for forecasting ET. In this paper, two techniques, namely a seasonal ARIMA model and Winter's
S. MOHAN, N. ARUMUGAM
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Forage Sorghum Evapotranspiration and Crop Coefficients

5th National Decennial Irrigation Conference Proceedings, 5-8 December 2010, Phoenix Convention Center, Phoenix, Arizona USA, 2010
Forage sorghum, especially brown mid rib (BMR) hybrids, offers attractive silage options in place of corn and has excellent ethanol conversions compared with other forage sorghums. The purpose of the study was to measure the evapotranspiration (ET), yield, forage quality, and water use efficiency of a fully irrigated BMR forage sorghum hybrid grown for
null Terry Howell, null Steven R Evett, null Karen S Copeland, null Judy A Tolk   +3 more
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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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Post-processed reference crop evapotranspiration forecasts

2020
Database with raw and post-processed ensemble forecasts of summer crop reference evapotranspiration over the CONUS based on numerical weather predictions (NWP). We also include the R scripts for producing those forecasts.
Hanoi Medina, Di Tian,
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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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Accuracy of Estimated Reference Crop Evapotranspiration

Journal of Irrigation and Drainage Engineering, 1989
Evapotranspiration from cool‐season grasses is used as the reference for ET0. The requirements for local calibration for three equations for ET0 recommended by the Food and Agriculture Organization of the United Nations (FAO) are shown for different climatic regions of California.
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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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