Physiology of Pgr’s and Nitrogen on Crop Growth Rate, Net Assimilation Rate, Nitrate Reductase Activity and Indole Acetic Acid Oxidase Activity of Black Gram (Vigna Mungo L.)  

Krishna Surendar1 , S. Vincent1 , Mallika Vanagamudi2 , H. Vijayaraghavan1
1 Department of Crop Physiology, TNAU, Coimbatore-3, India
2 Professor of Crop Physiology, Department of ACRC, TNAU, Coimbatore-3, India
Author    Correspondence author
Genomics and Applied Biology, 2013, Vol. 4, No. 3   doi: 10.5376/gab.2013.04.0003
Received: 04 Jun., 2013    Accepted: 19 Jun., 2013    Published: 28 Aug., 2013
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This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

Surendar et al., 2013, Physiology of Pgr’s and Nitrogen on Crop Growth Rate, Net Assimilation Rate, Nitrate Reductase Activity and Indole Acetic Acid Oxidase Activity of Black Gram (Vigna Mungo L.), Genomics and Applied Biology, Vol.4, No.3 15-21 (doi: 10.5376/gab.2013.04.0003)

Abstract

The field experiment were undertaken to study the effect of nitrogen in combination with foliar spray of bioregulators and micronutrients on growth and productivity of CO5 black gram. Photosynthetic pigments and foliage soluble protein content were estimated at different phenological phases of black gram. Seed yield were assessed at the time of harvest. Significant increase in the CGR (Crop Growth Rate) and NAR (Net Assimilation Rate) due to basal application of nitrogen 25 kg per hectare with foliar spray of urea 2% and 0.1 ppm brassinolide. The NA-ase and IAA-oxidase enzymes were also greatly altered by the basal application of nitrogen 25 kg per hectare with foliar spray of urea 2% and 0.1ppm brassinolide treatment.

Keywords
Black gram; PGR; CGR; NAR; NR-ase; IAA-oxidase; Nitrogen and yield
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