Studies on the Performance of Coropulse on Black Gram (Vigna mungo L.) in Rice Fallows
Studies on the performance of Coropulse (a unique emulsifiable concentrate formulation) were taken up on black gram (Vigna mungo). The experiment was laid out in a randomized block design with seven treatments and three replications. The objective was to study the effect of Coropulse toward improving the Rhizobium nodulation and a concomitant increase in the available nitrogen for crop growth and yield. Coropulse at 2.0 mLL−1 of water was sprayed on PU 31 black gram variety on 10, 15, and 20-day-old seedlings for one time and at 10 days followed by 15/20/25 DAS for two times. Coropulse was shown to significantly increase the nodule number as against untreated control at 25 and 49 DAS. Fresh weight of 50 Rhizobium nodules at 49-day age of crop recorded more in Coropulse sprayed plot compared to untreated control at 10 and 25 days of crop growth. Further Coropulse increased leaf area, root length, number of pods plant−1, number of seeds pod−1, 1000-grain weight, and seed yields (18.97 q ha−1) as against untreated control (10.77 q ha−1) that resulted in higher benefit-cost ratio.
KeywordsCoropulse Black gram Vigna mungo Rhizobium nodulation Rice fallows
The authors are thankful to Prof. M.S. Reddy, Founder-Chairman, Asian PGPR Society for Sustainable Agriculture, Auburn University, Auburn, AL, USA, for the encouragement given to attend the 5th Asian PGPR Society Conference for Sustainable Agriculture 2017, in Bogor, Indonesia. My sincere thanks are also to Dr. Sarjiya Antonius, Chairman, Local Organizing Committee, 5th Asian PGPR Conference for Sustainable Agriculture, Bogor, and to Dr. Riyaz Sayyed, President, Asian PGPR Society-Indian Chapter, for accepting the present paper for publication.
- Ahmad I, Muhammad JA, Hafiz NA, Muhammad K (2013) Influence of Rhizobium applied in combination with micronutrients on Mungbean. Pak J Life Soc Sci 11:53–59Google Scholar
- Robson AD (1978) Mineral nutrients limiting nitrogen fixation in legumes. In: Andrew CS, Kamprath EJ (eds) Mineral nutrition of legumes in tropical and subtropical soils. CSIRO, Melbourne, pp 277–293Google Scholar
- Weisany W, Raei Y, Kaveh HA (2014) Role of some of mineral nutrients in biological nitrogen fixation. Bull Environ Pharmacol Life Sci 2:77–84Google Scholar