Browsing by Author "PRAKASH, S S"
Now showing 1 - 4 of 4
Results Per Page
Sort Options
ThesisItem Open Access CO-APPLICATION OF SEWAGE SLUDGE AND FLY ASH ON CROP YIELD AND SOIL PROPERTIES WITH EMPHASIS ON HEAVY METAL CONTAMINATION(University of Agricultural Sciences, Dharwad, 2003) PRAKASH, S S; PATIL, C VABSTRACT NOT AVAILABLEThesisItem Open Access SOLID WASTE MANAGEMENT IN BLACK SOIL(University of Agricultural Sciences, Dharwad, 2000) CHANDRASHEKARAPPA, G. M.; PRAKASH, S SABSTRACT NOT AVAILABLEThesisItem Open Access SPATIAL DISTRIBUTION OF SOIL ORGANIC CARBON FRACTION IN PADDY SOILS OF SULEKERE NALA OF VISHVESHWARAIAH CANAL COMMAND AREA, MANDYA DISTRICT(University of Agricultural Sciences GKVK, Bangalore, 41138) YOGESH, M R; PRAKASH, S SAn investigation was carried out to understand the organic carbon distribution pattern and short term temporal changes in SOC fractions in paddy fields of Sulekere Command Area, Mandya district. For characterization 155 surface soil samples were collected from paddy fields covering the entire command area before pudling, while for understanding the changes in organic carbon fractions samples were collected in the selected locations at panicle initiation and after harvest of paddy. Soil characterization revealed that soils were neutral to slightly alkaline in reaction with low soluble salts. Soils are low to medium in available N, P and K status and sufficient in Ca, Mg and micronutrients. The organic carbon content indicated that 12.90, 10.96 and 74.83 % of the samples were low, medium and high in SOC status. Water soluble carbon content increased slightly towards panicle initiation stage and stabilized to initial level at harvest of crop. MBC and MBN were decreased slightly from initial stage up to harvest stages. Whereas LFC was slightly lower in the initial samples but it was higher at harvest stage. The Coefficient of variance (%) for pH and available N was low while EC and available K, Ca, Mg and S are moderate and SOC and DTPA extractable micronutrients had highest variability. The range, a semivariogram parameter indicates spatial dependence varied from 53.19 m for Cu to 329.47 m for Mg in North Nala. Whereas it was 30.12 m for SOC and 18775.65 m for available K in South Nala.ThesisItem Embargo STUDIES ON MICRONUTRIENT MANAGEMENT UNDER DIFFERENT FERTILIZER PRESCRIPTION ON PERFORMANCE OF Bt COTTON IN BLACK SOILS OF CHAMARAJANAGAR DISTRICT(University of Agricultural Sciences, Bangalore, 2022-08-18) YOGESH, G S; PRAKASH, S SExperiment was conducted during Kharif 2016 and 2017 at KVK Chamarajanagara to study the effect of micronutrients application under different fertilizer prescriptions on performance of Bt cotton. Experimental design adopted was RCBD with three replications and 13 treatments comprising foliar and soil application of micronutrients mixture (MNM) under University of Agricultural Sciences (UAS(B)) and Site Specific Nutrient Management (SSNM) method of NPK recommendation. Results of pooled data revealed that foliar application of MNM (Zn, Cu, Fe, Mn @ 0.3 % each and B @ 0.2 %) at 80 – 100 DAS with NPK recommendation as per SSNM and UAS(B) recorded seed cotton yield of 2329 and 2215 kg ha-1, respectively which was significantly higher than all other treatments. The uptake of major and secondary nutrients followed similar trend as that of yield. Significantly higher uptake of Fe, Mn, Zn, Cu and B was recorded in T9: SSNM + MNM foliar application (2309.15, 639.36, 182.52, 157.23 and 447.89 g ha-1, respectively). Significantly higher post-harvest soil NPK status was recorded in treatment T6: UAS(B) recommendation + Soil application of MNM (180.68 kg ha-1 ), T2:UAS(B) (59.45 kg ha-1) and T11: SSNM+ Zn and B soil application (284.15 kg ha-1 ), respectively. The DTPA extractable Fe, Mn and B content were significantly higher in T3 (4.12, 5.14 and 0.30 mg kg-1 respectively), whereas Zn and Cu content were higher in T5: UAS(B) recommendation+ soil application of Zn and B (1.18 mg kg-1) and T12: SSNM+ Soil application of MNM (2.39 mg kg-1), respectively. Thus, application of fertilizers based on SSNM with micronutrient spray is more beneficial in enhancing economic yield of Bt cotton.