Effect of manures, fertilizers and micronutrients on nodulation, growth and yield of soybean (Glycine max l. Merril)
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Date
2008-09
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Two field experiments were conducted at the Crop Research Centre of GBPUA&T, Pantnagar during kharif 2006 and kharif 2007 to study the response of soybean (Glycine max. L. Merrill) to manures, inorganic fertilizers and micronutrients on nodulation, growth and yield on variety PS- 1347. In first experiment, addition of FYM @10 t ha-1 significantly increased nodule number and their dry weight per plant over 100% NPK at 60 and 90 DAS in 2006 with numerical increases in 2007. Application of FYM @ 5 t ha-1 along with V W @10% gave significantly more nodule number per plant than FYM @ 10 t ha-1 at 60 DAS in both years. However, the maximum nodule number were recorded with the application of FYM @ 5 t ha-1 + VC @ 2.5 t ha-1 + VW@ 10% + 50% NPK, (18.33, 49 and 37.66 in 2006 and 33.66, 53.0 and 35.66 in 2007 plant-1, respectively) at all growth stages in both the years. This treatment also gave maximum nodule and plant dry weight in both the years. Treatment having FYM @ 5 t ha-1 + VC @ 2.5 t ha-1 + VW@ 10% + 50% NPK showed numerically more N and P uptake by plant than all treatments in 2006. But in 2007 this treatment significantly increased P uptake by plant than all treatments except V W @ 10% and FYM @ 5 t ha-1 + VC @2.5 t ha-1. This treatment also gave numerical more N and P content both in plant and grain over 100% NPK in both the years. All the treatments except FYM @ 5 t ha-1 + VW @ 10% significantly increased microbial biomass C at 50% flowering stage and at harvest in 2006. Similarly, VC @ 2.5 t ha-1+ VW @10%, FYM @ 5 t ha-1 + VC @2.5 t ha-1+ VW @10% and FYM @ 5 t ha-1 + VC @2.5 t ha-1+ VW @10% treatments significantly increased microbial biomass C as compared with 100% NPK at 50% flowering stage in 2007. FYM @ 5 t ha-1 + VC @2.5 t ha-1+ VW @10% + 50% NPK gave highest PSB number in soil at 50% flowering (39.66 × 105 and 32 × 105 CFU g-1 soil) and at harvesting stage of soybean (30.33 × 105 and 28 ×105 CFU g-1 soil) in both years. This treatment also produced maximum grain yield (3209.87 and 3230.88 kg ha-1 respectively,) in both years. In II experiment, the application of B. japonicum + 7 + 8 + 9 gave maximum, nodule number (20.33, 51.00 and 35.66 nodules plant-1 in 2006 and 37.66, 80.00 and 38.66 nodules plant-1 in 2007, respectively). Treatment having B. japonicum + Zn @ 5 kg ha-1 significantly increased nodule dry weight (mg plant-1) over control, B. japonicum alone and local strain at all growth stages except 60 and 90 DAS in 2007. This treatment also significantly increased plant dry weight than control and B. japonicum alone inoculation in 2006. Maximum plant dry weight (4.33, 23.61 and 44.23:, 4.26, 67.33 and 38.23 g plant-1, respectively), highest N and P uptake (103.15 and 32.52: 98.13 and 30.45 Kg ha-1, respectively) by plant and maximum grain yield (3117.2 and 2462.0 kg ha-1) were recorded by the application of B. japonicum + 7 + 8 + 9. Application of different treatments did not affect soil pH, OC (%) and EC (dSm-1) significantly after harvest of crop over control in both years.
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Thesis-PhD
Keywords
manures, organic agriculture, organic farming, organic fertilizers, trace elements, soyabeans, Glycine max, nodulation