نتایج جستجو برای: irrigated agriculture
تعداد نتایج: 72196 فیلتر نتایج به سال:
In irrigated agriculture, the study of various ways water infiltrates into soils is necessary [...]
Trapping hop looper moths, Hypena humuli Harris (Lepidoptera: Erebidae), in hop yards with acetic acid and 3-methyl-1-butanol Peter J. Landolt a , Christelle Guédot a , James Hansen a , Lawrence Wright b & David G. James b a USDA, ARS, Yakima Agricultural Research Laboratory, 5230 Konnowac Pass Road, Wapato, WA, USA b Washington State University, Irrigated Agriculture Research and Extension Cen...
Salinity is a major threat for the sustainability of irrigated agriculture in drylands [...]
Satellite-based evapotranspiration and crop coefficient for irrigated sorghum in the Gezira scheme, Sudan M. A. Bashir, T. Hata, A. W. Abdelhadi, H. Tanakamaru, and A. Tada Dept. of Food Systems and Field Sciences, Graduate School of Science and Technology, Kobe University, Nada, Kobe 657–8501, Japan Agricultural Research Corporation, PO Box 126, Wad Medani, Sudan Faculty of Agriculture, Kobe U...
Currently, there is an increased interest in the study of phosphorus (P) loss from soils aimed to understand and mitigate water eutrophication problems. The main objective of this study is to describe P losses in f ive irrigated agricultural watersheds considered as representative in terms of agricultural water management. Weekly water samples were collected during the 2007 hydrologic year (HY)...
When urban areas expand without concomitant increases in wastewater treatment capacity, vast quantities of wastewater are released to surface waters with little or no treatment. Downstream of many urban areas are large areas of irrigated croplands reliant on these same surface water sources. Case studies document the widespread use of untreated wastewater in irrigated agriculture, but due to th...
Irrigated agriculture has contributed greatly to food security in Asia— and irrigation projects present new opportunities for reducing poverty. This requires that projects deliberately tilt towards the poor. Moreover, policymakers, implementers and managers need to adopt an integrated approach when using irrigation as a pro-poor intervention strategy. With the right institutional and technical ...
Irrigation is crucial to agriculture in arid and semi-arid areas and significantly contributes to crop development, food diversity and the sustainability of agro-ecosystems. For a specific crop, the separation of its irrigated and rainfed areas is difficult, because their phenology is similar and therefore less distinguishable, especially when there are phenology shifts due to various factors, ...
Cellular automata (CA) is increasingly used to simulate various dynamic courses, e.g. urban spatial growth, forest fire spread and soil desertification. CA simulates these courses with iterative evolvements. Through simple and partial rules to form complex space structures and patterns, CA can express complex systems which are difficult to perform only with mathematical formulas. In combination...
The review analysis of twenty two irrigation efficiency (IE) studies carried out in the Ebro River Basin shows that IE is low (average IE)(avg)(= 53%) in surface-irrigated areas with high-permeable and shallow soils inadequate for this irrigation system, high (IE)(avg)(= 79%) in surface-irrigated areas with appropriate soils for this system, and very high (IE)(avg)(= 94%) in modern, automated a...
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