Determination of Evapotranspiration and Water Use Efficiency in Crop Production

Evapotranspiration and Water Management for Crop Production

A Worldwide Comparison of Water Use Efficiency of Crop Production

Worldwide food security and water safety issues necessitate countries with low water use efficiency of crop production (CWUE) to increase it and reduce regional CWUE variations. CWUE function was estimated with stochastic frontier analysis, and CWUE variation was decomposed on inter-continental, intra-continental and international level with variance decomposition method. It is proposed that in...

Improving water use in crop production.

Globally, agriculture accounts for 80-90% of all freshwater used by humans, and most of that is in crop production. In many areas, this water use is unsustainable; water supplies are also under pressure from other users and are being affected by climate change. Much effort is being made to reduce water use by crops and produce 'more crop per drop'. This paper examines water use by crops, taking...

determination of appropriate crop rotation with high water use efficiency in galikesh region

this study was carried out to determine the best rotation with using plants as wheat, soybeans, canola and tomatoes for field planting area of 35 hectares, in 15 kilometers northwest of galikesh in 2010. to this end, by using the cropwat software, appropriate model was selected in terms of net profit and performance (output per unit of water used), in irrigated and rain fed conditions. accordin...

determination of energy use efficiency and productivity in tomato production

abstract the aim of this study was to determine the input–output energy consumption in different levels of tomato production. the data used in the study were obtained from 140 tomato growers in different villages of marand township by using a face to face questionnaire. the results showed that the amount of energy consumed in tomato production was 65.2 gjha-1 which about 51% of this was generat...