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A WWF study on a new rice growing method (Rice Intensification) in India indicates a 30% increase in yield with a 40% decrease in water usage compare to conventional methods. The method involves “developing nutrient-rich and un-flooded nurseries instead of flooded ones; ensuring wider spacing between rice seedlings; preferring composts or manure to synthetic fertilizers; and managing water carefully to avoid that the plants’ roots are not saturated.”
Although it is difficult to predict the effects of climate change on crop yields, studies are showing a decreasing trend in rice production, one of the world’s most important food source.