Browsing by Author "Prakasha, H. C."
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ThesisItem Open Access ASSESSMENT OF HEAVY METAL CONTAMINATION BY URBAN SOLID WASTE COMPOSTS IN FINGER MILLET GROWN SOIL AND ITS RESIDUAL EFFECT ON COWPEA(University Agricultural sciences,GKVk, Bangalore, 2017-07-28) ROOHI; Prakasha, H. C.A pot experiment on residual effect of urban solid waste compost on soil physicochemical properties and cowpea crop was carried out during kharif- 2016 at college of agriculture, UAS, GKVK, Bangalore. The research data indicated that there was no significant improvement of soil moisture, pH, EC and OC before and after the harvest of cowpea crop. However, Macro and secondary nutrients were higher in the treatment received 100 per cent NPK +segregated compost as compared to inorganics alone. Micronutrient and heavy metal status viz., Ni and Pb were significantly higher in T6 (100 per cent NPK +unsegregated compost) before and after cowpea but cadmium and chromium content was not detectable. Crude protein and crude fiber content were significantly improved in treatment T5 (100 per cent NPK + segregated compost)as compared to only inorganics. The growth and yield data of cowpea recorded significantly higher values in the treatment T5 (100 per cent NPK +segregated compost). The macro and secondary nutrient content and its uptake by cowpea grain and haulm were significantly higher in the treatment received 100 per cent NPK +segregated compost. However, micronutrient and heavy metal content and its uptake by cowpea grain and haulm were significantly higher values in the treatment T6(100 per cent NPK +unsegregated compost). Even though heavy metal content was noticed in the cowpea grain and haulm but values were found below critical limits in the both segregated and unsegregated USW compost treatments.ThesisItem Open Access EFFECT OF BIOCHAR ON SOIL PROPERTIES, GROWTH AND YIELD OF FINGER MILLET (Eleusine coracana G.)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2018-07-25) NIRANJAN, B. N.; Prakasha, H. C.A field experiment was conducted at farmers field in Byrasandra village, Jangamakote hobli, Sidlaghatta taluq, Chikkaballapura district, to study the effect of biochar on soil properties, growth and yield of finger millet (GPU-28) during Kharif 2017. The field trail included 7 treatments and 3 replications. The results revealed that application of 100 per cent NPK + ZnSO4 + 125 per cent of biochar equivalent of FYM recorded higher growth parameters viz plant height, number of tillers hill-1 and the yield attributes like number of ear heads hill-1 , fingers earhead-1, 1000 grain weight, grain and straw yield of finger millet. Nutrient concentration and total nutrient uptake was increased in treatment T7 that received 100 per cent NPK + ZnSO4 + 125 per cent of biochar equivalent of FYM as compared to package of practices (POP). Application of biochar recorded significant improvement in water holding capacity and bulk density of the soil. The soil pH, electrical conductivity and organic carbon was significantly increased, however decrease in the aluminum status of post harvest soil was noticed. There was significant increased in major and secondary nutrients at post harvest soil. The iron and manganese concentration was decreased and significant increase in zinc and copper concentration in soil.ThesisItem Open Access EFFECT OF ENRICHED URBAN SOLID WASTE COMPOST ON SOIL PROPERTIES, YIELD AND UPTAKE OF NUTRIENTS BY RICE IN SUBMERGED SOIL(University of Agricultural Sciences, Bengaluru, 2014-06-10) SUPRIYA, N. O.; Prakasha, H. C.A field experiment was conducted during Kharif 2013 at ZARS, V. C. Farm, Mandya, to study the effect of enriched urban solid waste compost on soil properties, yield and uptake of nutrients by rice in submerged soil. The experiment was laid out in RCBD, with eleven treatments with and without enriched compost and FYM were replicated thrice. The results revealed that the available nutrients viz., N, P, K, Ca, Mg, S and DTPA extractable micronutrients Zn, Cu, Mn, Fe in the soil recorded significantly higher values in the treatment 100 % NPK + Urban Compost at 10 t ha-1 and was on par with 50 % N + 100 % PK + 50 % N through enriched Urban Compost compared to 100 % NPK alone. Significantly higher number of N fixer and P solubilizer were observed in soil due to treatment 100 per cent N through Enriched Urban Compost + 100 % PK compared to 100 % NPK alone. Significantly higher growth and yield attributes of rice were recorded with 100 % NPK + Urban Compost at 10 t ha-1 which was on par with 50 % N + 100 % PK + 50 % N through enriched Urban Compost. The higher net returns and cost benefit ratio were recorded on application of 50 % N + 100 % PK + 50 % N through Enriched Urban Compost compared to 100 % NPK alone. Studies showed that enriched urban compost is a viable organic nutrient source for rice under submerged condition.ThesisItem Open Access EFFECT OF PHOSPHORUS ENRICHED COMPOSTS ON SOIL PROPERTIES, GROWTH AND YIELD OF FINGER MILLET-COWPEA CROPPING SYSTEM IN CAUVERY COMMAND AREA, KARNATAKA(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2019-12-30) JAGADEESHA, G. S.; Prakasha, H. C.A field experiment was conducted at Zonal Agricultural Research Station, VC Farm, Mandya during kharif 2017, summer 2018, kharif 2018 and summer 2019 to study the effect of phosphorus enriched composts on soil properties, growth and yield of finger millet-cowpea cropping system. Prior to initiation of the field experiment, three different composts viz., urban solid waste compost (USWC), vermicompost and farm yard manure (FYM) were enriched with rock phosphate at 5 per cent. Enriched composts were characterized for various physical and chemical parameters as the pH had decreased in enriched USWC (8.02) and vermicompost (6.78) compared to unenriched USWC (8.29) and vermicompost (6.84). With respect to phosphorus concentration, enriched USWC (2.87 %), vermicompost (2.43 %) and FYM (1.16 %) were recorded higher than unenriched USWC (0.90 %), vermicompost (0.82 %) and FYM (0.28 %). Field experiment was laid out in RCBD design with eleven treatments and replicated thrice. The initial P2O5 of the experimental site was very high (133.58 kg ha-1). The results revealed that, application of recommended N and K + 75 per cent P supplied through enriched USWC (T5) had significantly higher grain (45.15) and straw yield (60.36 q ha-1) of finger millet and significantly higher grain (14.62) and haulm yield (29.98 q ha-1) of residual cowpea in pooled analysis. The uptake of nutrients by grain, straw and haulm of both the crops were significantly higher in T5 treatment. The post-harvest soil available nutrient status of both the crops were also significantly higher in T5 and higher phosphorus use efficiency (32.30 %) of finger millet was found in recommended N and K + 50 per cent P supplied through enriched USWC (T4). Higher BC ratio of 3.09 in first season (2017 and 2018) and 3.15 in second season (2018 and 2019) were recorded in T4 treatment.ThesisItem Open Access INFLUENCE OF ORGANIC AND INORGANIC AMENDMENTS ON AMELIORATION OF ALKALINE SOIL, GROWTH AND YIELD OF PADDY (Oryza sativa)(University of Agricultural Sciences, Bengaluru, 2018-08-03) BASAVASHRI, YADAWAD; Prakasha, H. C.Areas under tail end of Visveswarayya Canal, Cauvery command area, Karnataka indicated that soils were sandy clay in nature, alkaline in reaction (pH 7.61 to 8.20) with EC ranging from 0.43 to 1.1 dS m-1. The soils were low organic carbon, medium nitrogen, high phosphorus, low potassium, high calcium, magnesium, sulphur and micronutrients. The sodium ion ranging from 0.85 to 0.98 cmol (p+) kg-1and exchangeable sodium percentage (ESP) from 4.40 to 6.10.Field experiment was conducted during kharif season 2017 at farmer’s field in Hemmanahalli village, Maddur taluk, Mandya district to assess the growth and yield response to organic and inorganic amendments to alkaline soil. The experiment was laid out in a randomized complete block design with nine treatment combinations replicated thrice. The results revealed that the application of 100% NPK+ Green manure+ ZnSO4+ Gypsum+ FYM recorded significantly higher grain (6266 kg ha-1) and straw (6892 kg ha-1) yield of rice, nutrient content and uptake followed by 50% NPK+ Green manure+ ZnSO4+ Gypsum+ FYM as compared to POP and other treatments. Further, higher primary, secondary and micronutrient status in soil and decreased pH, EC, Na and ESP were recorded in the same treatment. The study clearly showed that in alkaline soils, Application of 100% NPK+ Green manure+ ZnSO4+ Gypsum+ FYM is more beneficial in enhancing the crop yield, crop productivity as well as fertility of the soil.ThesisItem Open Access Nutrient Dynamics Under Long-Term Practice Of Integrated Nutrient Management System In Rice-Cowpea Crop Sequence In Cauvery Command Area, Karnataka(University of Agricultural Sciences, Bangalore, 2001) Prakasha, H. C.; Krishnappa, A. M.ThesisItem Open Access STUDIES ON SOIL AND WATER QUALITY AS AFFECTED BYMUNICIPAL SOLID WASTE (MSW) DUMPING AND THEIR EFFECT ON CROP PERFORMANCE(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-10-20) SHEELA RANI, M. S.; Prakasha, H. C.The research was carried out to study the soil and water quality affected by municipal solid waste (MSW) dumping and their effect on crop performance around the municipal solid waste dumping site, Mandur, Bengaluru rural during kharif 2013 and summer 2014. The results of the physical properties showed that soil texture was sandy loam, bulk density was lower at the dumpsite and increased with increase in distance and soil depth. Soil moisture content, pH, EC, OC, CEC, total bacteria, total fungi were higher at the dumpsite and decreased with increase in the distance. Available major, secondary, DTPA micro nutrients and heavy metal concentration were higher at the dumpsite and decreased with increase in the distance and soil depth. The same trend also followed in water samples analyzed for pH, EC, SAR, BOD, COD, CO3, HCO3, Ca, Mg and heavy metals in both bore well and tank water in both seasons. During summer 2014, soil nutrient status and chemical properties of water samples were higher as compared to kharif 2013. The yield data of the crops grown around the dumping site were affected and yields were improved with increase in distance from the dumping site. Though the same trend was noticed during summer but the yields were higher. The nutrient uptake in different crops also followed the yield trend but the nutrient concentrations were found higher near the dumping site as compared to away from the dumping site. Higher nutrient uptake was noticed during summer 2014 as compared to kharif 2013.