منابع مشابه
Increasing productivity in irrigated agriculture: Agronomic constraints and hydrological realities
Irrigation is widely criticised as a profligate and wasteful user of water, especially in watershort areas. Improvements to irrigation management are proposed as a way of increasing agricultural production and reducing the demand for water. The terminology for this debate is often flawed, failing to clarify the actual disposition of water used in irrigation into evaporation, transpiration, and ...
متن کاملConfronting the Realities of Wastewater Use in Irrigated Agriculture: Lessons Learned and Recommendations
This concluding chapter synthesises results and lessons learned throughout this volume, which deals with the reality of wastewater use in agriculture in developing countries. It then extrapolates from these lessons, to make pragmatic recommendations aimed at protecting both the public health and farmers’ livelihoods. Addressing these lessons in a significant fashion is becoming ever more necess...
متن کاملTowards Global Mapping of Irrigated Agriculture
We developed an irrigation mapping methodology that relies on remotely sensed inputs from MODerate Resolution Imaging Spectroradiometer (MODIS) instrument, globally extensive ancillary sources of gridded climate and agricultural data and on an advanced image classification algorithm. In the first step, we used climate-based indices of surface moisture status and a map of cultivated lands to pro...
متن کاملControlling nitrate leaching in irrigated agriculture.
The impact of improved irrigation and nutrient practices on ground water quality was assessed at the Nebraska Management System Evaluation Area using ground water quality data collected from 16 depths at 31 strategically located multilevel samplers three times annually from 1991 to 1996. The site was sectioned into four 13.4-ha management fields: (i) a conventional furrow-irrigated corn (Zea ma...
متن کاملPrecision Farming: Dreams and Realities for Indian Agriculture
Human kind invented agriculture 10,000 years ago. After a long mile, nowhere in the world has agriculture made an impact as it has in India. The economy of the second most populous country in the world is inextricably linked to the pulse of its agricultural success or failure. The green revolution in the late 60’s saw the country through a period of what could otherwise have been the worst fami...
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ژورنال
عنوان ژورنال: California Agriculture
سال: 2002
ISSN: 0008-0845
DOI: 10.3733/ca.v056n04p114