Agronomists conduct trials on nutrient (NPK and others) management in which 150% and even 200% of RDF (recommended dose of fertilizer) are considered as treatment. Research fundings show higher productivity with nutrient levels at >RDF. Further, STCR based trials show higher dose of nutrients, sometimes >200% of RDF. My question is:
"Is it the right time to relook into fertilizer recommendation for crops for more precise nutrient management?"
That's a very pertinent question , Sagar. I agree with you , RDF is more of an indication than any concrete suggestion on fertilizer requirement. In many 8f the universities , RDF for different crops hardly undergo any periodic revision , it's more like one time recommendation .
Soil test - crop response based recommendation is still the best option to address real time changes in soil fertility over time...
Thanks to all who agreed with me. We should look into this and I feel it's the right time to guide future agriculture / crop production.
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