Few studies I went through indicate evidences of existing yield plateaus in agriculture sector, especially in wheat, and in maize yield levels. But there is not much discussion on such events in the Indian literature? It will be highly useful if I can get some information/literature on this.
Thanx.
Hi Dear Bala ji; Here are few links which are related to wheat and maize crop yield plateau. May be useful to you. Thanks
http://www.tandfonline.com/doi/abs/10.1080/10440040902834970
https://www.google.co.in/search?q=Wheat+and+Maize+yield+plateau+in+India&espv=2&biw=1024&bih=673&tbm=isch&tbo=u&source=univ&sa=X&ei=FWDxVNbsEYiOuASPx4LABw&ved=0CEsQsAQ&dpr=1
India cannot talk about yield plateau although it seems there are hurdles to improve crop yields in farmers fields. Much more than technology constraints, there seems to be institutional and policy constraints that are pulling the yield levels of farmers in their fields. For example, we need to rethink our fertilizer and water use policies. We need to work on the natural resources and sustainability aspects as well.
India had a rice yield of 1336 kg/ha in 1980, by 2016 it was 2543 kg/ha compared to 2400 a year earlier, and 2462 in 2012. This gives the idea of an up and down around 2,450, but the result of 2016 is a new high, which might show that a plateau has not yet been reached. I am not certain, if such consideration matter at all for food security in India as it seems that more an dmore rice is exported. In 2016 it were more than 10 million tons for more than USD 5 billion. What surely is correct is that India, once the world's biggest importer of foodgrains today is one of the world's biggest exporters, especially in rice, wher eno country exports more than India. It is tragic that a country that still has the world's biggest number of poor exports food rather than making it available for its own population.
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