For how long maximum nitrogen is required by crops like wheat and maize. Then how long urea maintain N supply in soil?
The required rate of N uptake is initially small and increases during crop growth. This pattern applies to all crops and matching it with available soil N minimises waste.
Nitrogen use effieciency may be increased with use of slow released neem coated and sulfur coated urea .
Urea fertilizer may be applied with nutrient enriched vermicompost 50% as organic fertilizer and 50 % neem coated urea may be more helpfull for optimum yield of crop with sustainable soil health management.
Perhaps , grain filling stage is most crucial with respect to nitrogen use ,in addition to tillering stage , depending upon other agro-pedologcial fcators. It would be better , if talk in terms of agronomic efficiency, physiological efficiency , apparent recovery , utilization efficiency , upatek efficiency ...like that, so many terms , depending upon their field of specialization , researchers use
And , more important is the relationship of these indicators of NUE complimenting each other ..?
For example , higher agronomic efficiency leads to higher nutrient uptake efficiency ?
I appreciate all the strategies provided for sustainable urea application. I also recommend the article below that investigated Pastures receiving urea
, Mo+urea+nBTPT or Mo+urea+nBTPT+S. This research showed improvement in N uptake and N recovery, compared to urea alone.
Dear Muhammad Rashid ,
This article is related to your question.
Article Evaluation of nitrogen (Urea) on Zea mays L. under Balkh pro...
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