The Journal of Research ANGRAU

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PRASAD and PRASADINI seasons during the two years over the crop grown entirely with chemical fertilizers. But, the substitution of 50 % N fertilizer with glyricidia was more beneficial. It increased the uptake of Fe by rice in significantly larger quantities upto panicle initiation both in kharif and rabi season during the two years. Such a beneficial effect of integrated nutrient management by substituting 25 % N fertilizer with glyricidia was on the other hand persistent only at tillering stage. d. Manganese Rice grown with different levels of fertilizers and integrated with organic source of nutrients removed larger quantities of this micronutrient than from the unfertilized soil. The crop removed 187.4 g ha -1 Mn at tillering, 384.9 g at panicle initiation and 137.9 g ha -1 at harvesting stage during kharif 2005- 06 (Table 8). The crop grown in the subsequent season removed 269.8, 328.5 and 324.69 g ha -1 Mn. During the second year rice removed 154.9, 351.9 and 474.9 kg Mn ha -1 in kharif. In the rabi season it removed 192.1, 313.6 and 215.7 g Mn ha -1 at tillering, panicle initiation and harvesting stage. The continuous application of 50 % recommended dose of fertilizers increased the uptake of this micronutrient during the corresponding crop growth stages in kharif and rabi in both the years. The crop fertilized with this treatment dose removed 276.0, 629.9 and 574.9 g Mn ha -1 at tillering, panicle initiation and harvesting stage in the kharif season, while it removed 287.4, 525.1 and 676.8 g ha -1 in rabi 2005-06. The uptake was 183.1, 374.7 and 784.5 g Mn ha -1 in kharif, while it was 232.3, 483.3 and 643.7 g ha -1 in the rabi season during the three crop growth stages in the second year crop cycle. The contribution of FYM or glyricidia to substitute 50 % N fertilizer was superior to chemical fertilizers alone in enhancing the uptake of this micronutrient only at tillering stage during 2005- 06. The available Zn and Cu in the fertilized soil was on par with the unfertilized soil at different stages of crop growth during the two year rice-rice cropping sequence. The co-application of 50 per cent recommended dose of NPK through fertilizers and FYM or glyricidia equivalent 50 per cent N fertilizer in the kharif season followed by the recommended dose of fertilizers in the rabi season significantly enhanced the availability of Fe both in the surface 0- 15 and lower soil depth of 15-30 cm. The substitution of 25 per cent N fertilizer with these organic materials in the kharif season and application of 75 per cent recommended dose of fertilizers in rabi season also enriched the soil with more quantity of available Zn. But, this improvement was relatively less consistent at different stages of crop growth than their substitution for 50 % N fertilizer. This trend was also similar for the soil available Cu content. Additionally, its improvement was also recorded by substituting 50 or 25 % N fertilizer with paddy straw only in the first year. The benefit of increased availability of Fe in the soil was recorded at the tillering stage during 2005-06 by the substitution of 50 per cent N fertilizer with FYM in kharif season and application of recommended dose of fertilizers in the rabi season only in the surface layer. On the other hand, the availability of Mn was not influenced by the application of fertilizers or the conjunctive use of nutrients through organic and inorganic sources. Rajeev Kumar et al., (1993), Singh et al., (1999) reported that the incorporation of organic sources in the soil along with the fertilizers increased the available micronutrients. The magnificent responses of integrated nutrient management treatments in leaving behind larger quantities of copper sustained the crop requirement in sufficient quantity. The availability of Zn increased by the co application of FYM by substituting 25 or 50% N fertilizer. Nonetheless, the site of present experiment continuously cropped with rice-rice cropping sequence for the past 17 years contained much higher quantities of Zn, Cu, Fe, Mn than the critical limit of 0.6 mg kg -1 Zn, 0.2 mg kg -1 Cu, 4 mg kg -1 Fe, and 3 mg kg -1 Mn even in the unfertilized control. Not complacent with the data so achieved, it would be a wise step to substitute 50 per cent N fertilizer with FYM or glyricidia to averse the likely depletion of these micro but essential elements for crop growth in the years to come 12
NUTRIENT UPTAKE BY RICE CROP UNDER LONG TERM INM Table 1. Details of the treatments Sl. No Kharif Rabi T 1 No fertilizers, No organic manures No fertilizers, No organic manures T 2 50 Rec. NPK dose through fertilizers 50 Rec. NPK dose through fertilizers T 3 50 % Rec. NPK dose through fertilizers 100 % Rec. NPK dose through OM T 4 75 % Rec. NPK dose through fertilizers 75 % Rec. NPK dose through fertilizers T 5 T 6 T 7 T 8 100 % Rec. NPK dose through fertilizers 100 % Rec. NPK dose through fertilizers 120:60:60 kg ha -1 120:60:60 kg ha -1 50 % Rec. NPK dose through fertilizers + 50 % N through FYM 75 % Rec. NPK dose through fertilizers + 25 % N through FYM 50 % Rec. NPK dose through fertilizers + 50 % N through paddy straw T 9 75 % Rec. NPK dose through fertilizers + 25 % N through paddy straw T 10 50 % Rec. NPK dose through fertilizers + 50 % N through glyricidia T 11 75 % Rec. NPK dose through fertilizers + 25 % N through glyricidia T 12 Conventional farmers practice 80:50:20 kg ha -1 NPK 100 % Rec. NPK dose through fertilizers 75 % Rec. NPK dose through fertilizers 100 % Rec. NPK dose through fertilizers 75 % Rec. NPK dose through fertilizers 100 % Rec. NPK dose through fertilizers 75 % Rec. NPK dose through fertilizers Conventional farmers practice 80:50:20 kg ha -1 NPK Table 2. Influence of integrated nutrient management practices on N uptake (kg ha -1 ) in rice-rice cropping system Treatments Tillering 2005-06 2006-07 Panicle initiation Harvesting Tillering Panicle initiation Kharif Rabi Kharif Rabi Kharif Rabi Kharif Rabi Kharif Rabi Kharif Harvesting T 1 26 38 35 33 63 65 24 29 40 31 40 27 T 2 47 45 77 73 100 114 31 39 51 63 60 59 T 3 32 46 70 80 111 134 29 41 58 81 77 86 T 4 49 49 82 84 105 173 35 43 80 78 75 68 T 5 55 48 119 110 112 126 42 48 106 96 79 92 T 6 39 51 94 104 115 128 39 42 89 95 72 74 T 7 53 59 106 107 112 143 41 48 97 94 69 75 T 8 30 45 88 81 108 179 37 42 85 82 61 75 T 9 48 46 97 83 105 150 30 41 68 93 69 76 T 10 59 66 121 119 121 181 45 54 109 118 91 80 T 11 62 70 125 121 119 135 50 53 115 117 92 80 T 12 42 52 85 79 103 123 35 43 69 82 68 72 SE + 2.25 1.6 9.7 7.7 5.8 10.6 2.4 4.2 4.7 8.7 7.9 9.0 CD at 5 % 4.6 3.4 20.2 16.0 12.0 22 5.0 8.6 9.8 20.2 16.4 18.6 Rabi 13
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Page 3 and 4: CONTENTS PART I : PLANT SCIENCE Eff
Page 5 and 6: J.Res. ANGRAU 41(1) 1-4, 2013 EFFEC
Page 7 and 8: EFFECT OF FOLIAR APPLICATION OF NPK
Page 9 and 10: J.Res. ANGRAU 41(1) 5-13, 2013 NUTR
Page 11: NUTRIENT UPTAKE BY RICE CROP UNDER
Page 15 and 16: NUTRIENT UPTAKE BY RICE CROP UNDER
Page 17 and 18: NUTRIENT UPTAKE BY RICE CROP UNDER
Page 19 and 20: LAKSHMI et al Fig 1. Changes in C/N
Page 21 and 22: LAKSHMI et al Changes in C/N ratio
Page 23 and 24: LAKSHMI et al Table 3. Changes in h
Page 25 and 26: J.Res. ANGRAU 41(1) 20-29, 2013 INF
Page 27 and 28: PRASAD and PRASADINI of bulk densit
Page 29 and 30: PRASAD and PRASADINI to as high as
Page 31 and 32: PRASAD and PRASADINI Table 4 . Infl
Page 33 and 34: PRASAD and PRASADINI Table 8. Influ
Page 35 and 36: J.Res. ANGRAU 41(1) 30-38, 2013 GEN
Page 37 and 38: VEMANNA et al The range in mean val
Page 39 and 40: VEMANNA et al grain yield per plant
Page 41 and 42: VEMANNA et al 41
Page 43 and 44: VEMANNA et al Singh, S. P and Khan,
Page 45 and 46: RAMANA et al RESULTS AND DISCUSSION
Page 47 and 48: J.Res. ANGRAU 41(1) 42-46, 2013 A S
Page 49 and 50: RAJANNA et. al. Table 2. Reasons fo
Page 51 and 52: RAJANNA et al the present findings
Page 53 and 54: NARASIMHA et al Table 1. Proximate
Page 55 and 56: NARASIMHA et al Maynard, L., Lossli
Page 57 and 58: RAMANA et al with small follicles m
Page 59 and 60: RAMANA et al Characteristics of fol
Page 61 and 62: Research Notes J.Res. ANGRAU 41(1)
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KIRTHY et al Akhtar et al., 2008; S
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KIRTHY et al El Gharras H. 2009. Po
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SANDYARANI et al Weed parameters li
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SANDYARANI et al Table 2. Influence
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Research Notes J.Res. ANGRAU 41(1)
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KUMAR et al Table 2. Effect of seed
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DEEPAK et al Table 2 Price spread a
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YAMINI et al Table 3. Estimates of
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YAMINI et al coupled with high per
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LOKESH et al Table 1. Clustering pa
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LOKESH et al Table 4. Mean values o
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ABIRAMI et al Socio-economic Impact
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ABIRAMI et al socio-economic impact
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VEMANNA et al Table 1. Discriminant
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VEMANNA et al total biomass, fresh
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RAO et al Table 1. Plant height, nu
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DEVI et al S.No Category Frequency
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DEVI et al extension contact and ma
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NIRMALA and VASANTHA earliness in a
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NIRMALA and VASANTHA adopted this t
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SUDHARANI et al Table 1. Genotypic
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SUDHARANI et al At genotypic level,
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NIRMALA et al weight of pods per pl
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NIRMALA et al Table 3. Cluster mean
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PUNYAVATHI and VIJAYALAKSHMI 6.5 6.
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PUNYAVATHI and VIJAYALAKSHMI REFERE
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KATTEL et al Table 1. Item Analysis
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RADHIKA et al Thus, the results of
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RAJU et al estimated daily dietary
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RAJU et al Table 3. Physico-chemica
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MINNIE et al Table 2. Estimates of
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Statement about ownership and other
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GUIDELINES FOR THE PREPARATION OF M
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ESSENTIAL REQUIREMENTS FOR CONSIDER
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