volume 25 issue 4 (december 2004) : 309 - 312
CHLOROPHYLL METER AS A TOOL TO DETERMINE THE TIME OF APPLICATION OF N IN RICE (ORnA SATWA L.) - A REVIEW
1Department of Agronomy,
Tamil Nadu Agricultural University, Coimbatore - 641 003, India
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Agricultural Reviews
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volume 25 issue 4 (december 2004) : 309 - 312
CHLOROPHYLL METER AS A TOOL TO DETERMINE THE TIME OF APPLICATION OF N IN RICE (ORnA SATWA L.) - A REVIEW
1Department of Agronomy,
Tamil Nadu Agricultural University, Coimbatore - 641 003, India
ABSTRACT
Chlorophyll meter is a promising tool for adjusting the rate and time of nitrogen application for different rice fields. Chlorophyll meter measures the leaf chlorophyll content, which is closely related to the leaf N content as well as photosynthetic rate. The SPAD (Soil Plant Analysis Division) technique ensures supply of N to the crop as and when there is demand for N and has been reported to result in higher N use efficiency. Fixing the critical SPAD value for N top dressing in the rice has been discussed.
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In this Article
APC
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Published In
Agricultural Reviews