RESPONCE A CONSUMPTIVE USE PROGRAM MODEL ON WHEAT UNDER EGYPTIAN CONDITIONS | ||||
| Misr Journal of Agricultural Engineering | ||||
| Article 17, Volume 34, Issue 2, April 2017, Page 859-876 PDF (483.86 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjae.2017.96762 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Atef Ghandour | ||||
| *Farm Irrigation and Drainage Dept., Agricultural Engineering Research Institute, egypt. | ||||
| Abstract | ||||
| The experiments were carried out at Moshtohor, Kalubia governorate [Latitude: 30o 21`N, Longitude: 31o 14`E and Elevation: 14 m] during 2015/16 growing seasons to test model application of wheat under Egyptian conditions. A computer application program has been developed as Consumptive Use Program plus (CUP plus) as is an application, can estimate crop evapotranspiration (ETc) and evapotranspiration of applied water (ETaw). A monthly climate data, the program uses daily measured weather data to estimate daily soil water balances for surfaces that account for evapotranspiration losses and water contributions from rainfall, seepage, and irrigation. Soil water-holding characteristics, effective rooting depths, and irrigation frequency were measured with rainfall and ETc data to calculate a daily water balance and determine effective rainfall and ETaw, which is equal to the seasonal cumulative ETc minus the effective rainfall. The main objective of this paper research is testing a mode for determining reference evapotranspiration (ETo), crop coefficient (Kc) values, crop evapotranspiration (ETc), and evapotranspiration of applied water (ETaw), which provides an estimate of the net irrigation water diversion needed to produce a crop. The obtained results show that ETo arrive to the maximum in May by 188.19 mm/month but ETaw arrive to the maximum in April by 110.71 mm/month. The application outputs a wide range of tables and charts that are useful for irrigation planning and decision making. | ||||
| Keywords | ||||
| Program; Climate data; Water balance; Evapotranspiration; and crop coefficient | ||||
| References | ||||
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