Simulation of Peanut (Arachis hypogaea L.) with Cropwat Model in Irrigation Condition and Rainfed
Journal Title: Scientia Agriculturae - Year 2013, Vol 2, Issue 3
Abstract
The purpose of this study is to simulation of peanut with Cropwat model under Irrigated and Rainfed Conditions in order to provide information necessary in taking decisions is on irrigation management. The Cropwat model is an irrigation management and planning model simulating the complex relationships of on farm parameters the climate, crop and soil. This model was run for the specific weather conditions in the year 2009. Analysis suggests that from the second decade of august the values of soil moisture deficit remained higher than readily available moisture values due to which severe yield reduction in peanut crop occurred 45.6% in growth stage three of peanut vegetation season. The loss in total yield reduction was 43.6%. The total available moisture remained higher from readily available moisture and soil moisture deficit throughout the peanut vegetation season. Simulation for irrigated field of peanut crop is done using the criteria of fixed interval of 6 days with irrigation application of fixed depth of 40 mm from the first day of sowing. During the first 3-irrigation application 207.3 mm of water is lost, the first irrigation lost 1.1 mm, the second lost 102.5 mm and third irrigation lost 103.7 mm water. The relation of soil moisture deficit and readily available moisture is just like rainfed condition but having little differences in value as compared to rainfed condition simulation. The largest yield reduction 45.4% occurred in growth stage three of peanut vegetation season. Simulation estimated 39.4% yield reduction under irrigated condition.
Authors and Affiliations
Ali Abdzad Gohari
Keywords
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