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Agricultural or ecological droughts affect crop production or ecosystems in general. This condition can also arise independently from any change in precipitation levels when either increased irrigation or soil conditions and erosion triggered by poorly planned agricultural endeavors cause a shortfall in water available to the crops.
In botany, drought tolerance is the ability by which a plant maintains its biomass production during arid or drought conditions. [ 1 ] [ 2 ] [ 3 ] Some plants are naturally adapted to dry conditions , surviving with protection mechanisms such as desiccation tolerance , detoxification , or repair of xylem embolism. [ 3 ]
Dehydration avoidance is desirable in modern agriculture, where drought resistance requires the maintenance of economically viable plant production under dehydration stress. The role of dehydration avoidance is maintaining water supply and sustaining leaf hydration and turgidity with the purpose of maintaining stomatal opening and transpiration ...
Drought stress will impact all of the state's 1,600 farmers and a third of the state's 250,000 acres of crawfish ponds. Josh Trahan, a crawfish farmer , depends on the business to sustain himself.
Wheat is another major crop that is affected by drought: lack of water affects the plant development, and can wither the leaves. [21] [22] Maize crops can be affected by high temperature and drought, leading to the loss of maize crops due to poor plant development. [21] Soybean is a major source of protein, and its production is also affected ...
Notably, a similar fraction of global crop and livestock production would also experience a large change in HLZ, but in more developed areas which would have better chances of adapting. In contrast, under the low-emissions SSP1-2.6, 5% and 8% of crop and livestock production would leave what is defined as the safe climatic space. [16]
Identifying the genes responsible for drought tolerance in barley plants and applying them to other plant species or other barley varieties via transgenics has also shown promising results. One study expressed the hva1 gene from barley in creeping bentgrass , and found that it improved drought tolerance by lessening the effects of water-deficit ...
The first environmental effect is increased crop growth, such as in the Rubaksa gardens in Ethiopia The irrigation that grows crops, especially in dry countries, can also be responsible for taxing aquifers beyond their capacities. Groundwater depletion is embedded in the international food trade, with countries exporting crops grown from ...