the price of water in agriculture plays an important role in the water allocation management. therefore, the optimum strategies of cropping pattern could be designed when water price analysis are considered in a predetermined economic framework. in the present study, a programming model was developed using the genetic algorithm for optimal water allocation in the eastern north of khuzestan prov...

J. Econ. Enlomol. 72: 599-601 (1979) Time of tuber infestation by Phthorimaea operculeLla (Zeller) was markedly affected by the type of irrigation system employed. Tuber infestation under furrow irrigation was above 25% for 4 wk prior to vine senescence while sprinkler irrigated potatoes sustained less than 5% damage during this period. After irrigation was terminated, infestation increased rap...

A software called FRUPAT was developed for calculating input and output coefficients (Technical Coefficients) of fruit production systems in South Patagonia. FRUPAT combined locations (Río Chubut valley; Sarmiento valley; Los Antiguos valley; Río Chico valley), edaphic environment (good quality soil with water-table depth exceeding 2 m; good quality soil with water-table depth between 1 and 2 m...

Spray irrigation is one of the effective techniques in saving water and increasing crop yield. Large-scale linear move spray irrigation systems are widely used in China. However, the traditional go-stop-go driving method causes difficulty in controlling the linear move irrigator. A new control method efficient in operation and the consumption of water, electricity, and labor is needed. Because ...

The energy of sprinkler irrigation drops splashing on the soil surface or crop canopy depends their size and velocity. kinetic is a major factor degrading surface. effect growing maize drop dissipation water partitioning was analyzed. A field experiment performed solid-set irrigated plot cropped with maize. Measurements were at different locations heights into layout. Tests five heights. At eac...