Chlorophyll Dynamics in Rice (Oryza sativa) Before and After Flowering Based on SPAD (Chlorophyll) Meter Monitoring and its Relation with Grain Yield |
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| Authors: | K. Ramesh,B. Chandrasekaran,T. N. Balasubramanian,U. Bangarusamy,R. Sivasamy,& N. Sankaran |
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| Affiliation: | Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641003, India,;Department of Agricultural Meteorology, Tamil Nadu Agricultural University, Coimbatore 641003, India,;Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore 641003, India,;Department of Soil Science &Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore 641003, India |
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| Abstract: | The rice plant at any point in time is composed of leaves of physiologically different ages, so it follows that the leaves differ in their contributions to the growth of the whole plant and its grain yield. As the leaf chlorophyll content (Soil Plant Analytical Division value) is the best indicator of photosynthetic activity in rice, the chlorophyll content of rice before and after flowering was determined in a weed management field experiment on direct wet seeded rice. The results indicated that the leaf chlorophyll content at 79 days after sowing correlated well with the grain yield of rice. Multiple regression models also indicated the dependence of rice yield on leaf chlorophyll content before and after flowering. |
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| Keywords: | correlation leaf chlorophyll regression rice SPAD reading |
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