The relative reduction in potential ground-water contamination due to pesticides at several sites in Utah was determined by comparing alternative irrigation system designs, water management practices and pesticides. Alternative sprinkler irrigation distribution coefficients were used to estimate infiltration depths. The movement of pesticides through soils following sprinkler irrigations was si...

In this paper we assess the applicability of design principles (Ostrom, 1990) in irrigation management comparing the similarities and differences from Nepal and Thailand (considering the difference in economic situation and nature of irrigation systems). The information comes from the empirical study of 100 irrigation systems, 50 each from Nepal and Thailand representing major river basins and ...

to evaluate the quantitative and qualitative of forage in intercropping of sorghum and chickling pea under limited irrigation systems, an experiment was conducted in research farm, college of agriculture, university of tehran, during 2009 and 2010. the treatments were arranged as split plots consisted of three levels of irrigation regimes including control (irrigation after 70mm evaporation fro...

Intensive vegetable cropping systems use large amounts of water and nutrients. Excess application of water and nutrients results in economic losses (higher fertilizers and pumping costs) and contributes to nutrient leaching and environmental degradation. Increasing nutrient use efficiency (NUE) and water use efficiency (WUE) should be a priority for sustainable horticulture. This increased NUE,...

Karl Marx on Colonialism and Modernization. Doubleday, Garden City, New York Netting R M 1981 Balancing on an Alp. Cambridge University Press, Cambridge, UK Nixon S 1998 Enriching the sea to death. Scientific American Quarterly 9(3): 48–63 Oh H-S 1978 Customary rules of water management for small irrigation reservoirs in Korea. Journal of Rural DeŠelopment 1: 96–110 Ostrom E 1992 Crafting Insti...

This study investigates which factors may influence producers’ use of irrigation technologies and/or water management practices (WMPs). One major finding is that Arkansas producers are more likely to rely on WMPs instead of sprinkler irrigation as a response to changes in depth to water and drought occurrences. This finding highlights the importance of expanding the existing literature that foc...

the spray under pressure is an effective save on water. This task should be automated and controlled in order to limit the water waste and the facilities of damages. For this reason, it's necessary to find a mathematical model describing the irrigation process. In order to facilitate this step the TakagiSugeno fuzzy model is the best approaches of nonlinear systems representation. Various techn...