Effect of application of biofertilizers to soybean (Glycine max) and nitrogen to tobacco (Nicotiuna tabacum) in soybean - tobacco cropping system
DOI:
https://doi.org/10.59797/ija.v52i4.4942Keywords:
Biofertilizers, Direct effects, Economics, Leaf quality, Soybean, Sunnhemp green-manuring, Tobacco yieldAbstract
A field experiment was conducted during 2001-02 and 2002-03 at Jeelugumilli to find out the direct and residual effects of Bradyrhizobium japonicum and Pseudomonas striata inoculation on rainy season (kharif) soybean [Gly- cine max (L.) Merr.] cv 'JS 335' and of directly applied N in winter (rabr) season FCV tobacco (Nicotiana tabacum L.) cv 'Kanchan' in irrigated Alfisols of Andhra Pradesh. Co-inoculation of soybean with Bradyrhizobium + Pseudomonas recorded significantly higher growth, yield attributes and grain yield than their individual inoculation and no inoculation. Green-manuring in situ with sunnhemp [Crotalaria juncea (L.) Rotar & Joy] followed by tobacco recorded significantly higher tobacco green-leaf and cured-leaf yields, and grade index compared with other treat- ments. Combined inoculation of Bradyrhizobium and Pseudomonas to soybean increased the tobacco green leaf yield, cured leaf yield and grade index by 10.5, 7.7 and 13.2% respectively compared with no inoculation. Applica- tion of 130 kg Nlha recorded significantly higher green-leaf and cured-leaf yields, and grade index compared with that of 11 0 kg Nlha. Higher total N, nicotine, lower reducing sugars and sugar: nicotine ratio in X and L leaf posi- tions were observed in sunnhemp-tobacco system, followed by soybean (co-inoculation) - tobacco system. Higher total N, nicotine, lower reducing sugars and sugar : nicotine ratio were recorded with 130 kg Nlha than with 11 0 kg Nlha. Soybean (co-inoculation) - tobacco system gave additional net returns of Rs 1,7101ha over sunnhemp-tobacco system (Rs 40,670lha). Higher B : C ratio of 1.65 was obtained with sunnhemp - tobacco sys- tem. It was concluded that combined inoculation of Bradyrhizobium and Pseudomonas to soybean improved the growth and yield of soybean and increased the succeeding tobacco yields, and application of 130 kg Nlha would be needed for tobacco succeeding soybean.References
highest net returns were obtained from soybean (co-inocu- lation) -tobacco system, followed by sunnhemp (in situ Collins, W.K. and Hawks Jr., S.N. 1993. Principles of Flue Cured Tobacco Production, 116pp. N.C. State University, Raleigh,
green manuring) -tobacco system. These were followed
by soybean (Bradyrhizobium or Pseudomonus) -tobacco
Gopalachzi, N.C. 1984. Tobacco,96 pp. Indian Council of Agricul-
system. Soybean (co-inoculation) -tobacco system (Rs
tural Research, New Delhi. 42,380ha) gave additional net returns of Rs 1,710ha than Harishu Kumar, P., Sinha, R., Sarma, C.B., Narayana Rao, R.B., sunnhemp -tobacco system (Rs 40,670ha). Higher B : C Rao, N.P. and Rao, Ch. M. 1992. Response of FCV tobacco ratio of 1.65 was obtained with sunnhemp -tobacco sys- to levels of nitrogen in rotation with different legumes under
vertisols. Tobacco Research 18(1&2): 45-51.
Kasturi Krishna, S., Krishna Reddy, S.V. and Krishnamurthy, V. 2004a. Effect of spacing, levels of nitrogen and topping on yield and quality of irrigated natu tobacco (Nicotiana tabacum) grown in Alfisols of Andhra Pradesh. Indian Jour- nal of Agronomy 49(2): 124-127.
Kasturi Krishna, S., Krishna Reddy, S.V. and Reddy, P.R.S. 2004b. Performance of flue cured Virginia tobacco (Nicotiana tabacum) -based cropping systems under irrigated Alfisols of Andhra Pradesh. Indian Journal of Agronomy 49(3): 201-
Krishna Reddy, S.V., Kasturi Krishna, S. and Krishnamurthy, V. 2006. Productivity, quality and economic returns in FCV tobacco (Nicotiana tabacum) with conjunctive use of or- ganic manures and nitrogen under irrigated Alfisols of Andhra Pradesh. Tobacco Research 32(1): 25-31.
Poonam, G. and Pant, I.M. 2002. Effect of coinoculation of Pseudomonas species and Bradyrhizobium japonicum on nitrogen and phosphorus availability to soybean (Glycine man). Indian Journal of Agricultural Sciences 72(4): 248-
Praharaj, C.S. and Dhingra, K.K. 2001. Growth, productivity and biological nitrogen fixation in soybean (Glycine man) under Bradyrhizobium inoculation, pendimethalin and nitrogen schedules and their residual effect on succeeding wheat (Triticum aestivum) crop. Indian Journal of Agronomy 46(4): 635-642.
Prakash, V., Kundu, S., Ghosh, B.N., Singh, R.D. and Gupta, H.S. 2002. Annual nitrogen input to the soil from left-over biom-
