نتایج جستجو برای: agricultural productivity
تعداد نتایج: 179986 فیلتر نتایج به سال:
The potential of biological nitrogen fixation (BNF) to provide sufficient N for production has encouraged re-appraisal of cropping systems that deploy legumes. It has been argued that legume-derived N can maintain productivity as an alternative to the application of mineral fertilizer, although few studies have systematically evaluated the effect of optimizing the balance between legumes and no...
Water erosion causes reduced farmland productivity, and with a longer period of cultivation, agricultural productivity becomes increasingly vulnerable. The vulnerability of farmland productivity needs assessment due to long-term water erosion. The key to quantitative assessment is to propose a quantitative method with water loss scenarios to calculate productivity losses due to long-term water ...
This paper investigates the effects of agricultural aid on food security in African countries during the the 1990 to 2012 period. Defining food security as increases in agricultural productivity and controlling for a large number of covariates, we find that agricultural aid, at the aggregate level, aid to the agricultural sector has positive and statistically significant effect on food security...
Although Bangladesh made some remarkable achievements in reducing poverty and in improving social and economic outcomes in recent decades, about one-third of the rural population still lives below the upper poverty line most of whom depend on agriculture as their primary source of income. One of the reasons for their poverty is the low productivity that results from sub-optimal use of inputs an...
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