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University of Agricultural Sciences, Dharwad

The University of Agricultural Sciences, Dharwad was established on October 1, 1986. The University has 5 Colleges, 27 Research Stations, 6 Agriculture Extension Education Centers, 6 Krishi Vigyan Kendras and ATIC. The University has its jurisdiction over 7 districts namely Bagalkot, Belgaum, Bijapur, Dharwad, Gadag, Haveri, and Uttar Kannada in northern Karnataka. Greater diversity exists in soil types, climate, topography cropping and farming situations. The jurisdiction includes dry-farming to heavy rainfall and irrigated area. Important crops of the region include sorghum, cotton, rice, pulses, chilli, sugarcane, groundnut, sunflower, wheat, safflower etc. The region is also known for many horticultural crops. Considerable progress has been registered in the field of education, research and extension from this University.

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2010 - 2015663
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Thesis Type: M.Sc × Start date: 2010 × End date: 2015 ×
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Now showing 1 - 9 of 663
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    ThesisItemOpen Access
    Studies on the Effect of Irrigation and Integrated Nutrient Management Levels on Growth and Yield Of Bt-Cotton in Vertisol
    (University of Agricultural Science, Dharwad, 2015-12) Dilip C.; G.V. Dasar
    A field experiment was conducted at Water Management Research Centre (WMRC) Belvatagi, Navalgund taluk (Dharwad dist.) during kharif 2014-15 to study the effect of irrigation levels and integrated nutrient management levels on growth and yield of Bt-cotton in Vertisol. Irrigation scheduled at 0.8 IW/CPE (I1) recorded significantly higher kapas yield (17.32 q ha-1) as compared to irrigation scheduled at critical stages (15.21 q ha-1). Among the INM levels, F3 recorded significantly higher kapas yield (18.11 q ha-1). Among interactions, I1F3 recorded significantly highest kapas yield (19.08 q ha-1) as compared to other interactions. Integrated use of fertilizers and organics increased pH and macronutrients in soil. F5 treatment recorded significantly higher organic carbon (7.4 g kg-1) than the treatment F1 (RPP) and F2 (RPP + one row of sunhemp between two rows of Bt-cotton). Higher available nitrogen (204.52 kg ha-1), phosphorus (38.62 kg ha-1) and potassium (778.48 kg ha-1) were recorded in F3 treatment. Higher available iron (4.31 mg kg-1) and boron (0.36 mg kg-1) contents were recorded in F3 treatment. Higher available zinc (0.65 mg kg-1) was recorded in the treatment 50% RDF + FYM @ 10 t ha-1 + one row of sunhemp between two rows of Bt-cotton + ZnSO4.7H2O @ 25 kg ha-1 + FeSO4.5H2O @ 25 kg ha-1 + Borax @ 5 kg ha-1 (F5). Application of chemical fertilizers without organics reduced available micronutrients in the soil. It can be concluded that treatment combination of RPP + one row of sunhemp between two rows of Bt-cotton + ZnSO4.7H2O @ 25 kg ha-1 + FeSO4.5H2O @ 25 kg ha-1 + Borax @ 5 kg ha-1 and irrigation at 0.6 IW/CPE (I2F3) found suitable for getting higher yield and net profit which also saves water.
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    ThesisItemOpen Access
    Genetic Transformation Studies in Cotton (Gossypium spp.)
    (University of Agricultural Science, Dharwad, 2015-12) Pralhad, Jadhav Mangesh; Katageri, I. S.
    In the present genetic transformation study, both in vitro and in planta approaches were tried to transfer cry1Ac and cry1Acm genes. Coker-312 (Gossypium hirsutum L.) having in vitro regeneration ability, was used in in vitro transformation study. In planta transformation studies were carried out in Sahana (Gossypium hirsutum L.) and BCS 23-18-7 (Gossypium barbadanse L.) cotton varieties. In in vitro transformation studies, 230 embryogenic calli and 135 hypocotyl, (20mm) were used as explants source for each gene. In in planta transformation, eight to ten days old seedlings were used as explants. Each 90 of seedling of Sahana and 70 of BCS 23-18-7 were used in transfer of cry1Acm and cry1Ac respectively. The variable numbers of plants (26-37) of each combination were established. In these established plants, few plants from each combination (3-6 plants) were recorded as positive for PCR with gene of interest (cry1Ac and cry1Acm) and selectable marker gene (npt-II) through PCR. PCR positive plants from in vitro studies were also subjected for expression studies through RT-PCR and detection of Cry protein through Bt express strips (Amar immunodiagnostics). However absence of inheritance of these genes to next generation (T1) in both cases indicates transient expression. This may be due to non integration of foreign gene into host genome and its elimination during cell division.
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    ThesisItemOpen Access
    Studies on Clonal Variation for Gall Midge, Asphondylia pongamiae Mani (Diptera: Cecidomyiidae) Infestation in Pongamia pinnata (L.) Pierre
    (University of Agricultural Science, Dharwad, 2015-11) Kabber, Usha Raju; Javaregowda
    Pongamia pinnata, oil producing tree legume, popularly known as ‘Karanja’ or ‘Honge’ which is widely occurring non-edible oil tree in India. Oil derived from the seed is a very good ‘bio-fuel’. Fifty three insect pests have been listed in P. pinnata which includes six species of gall inducers. The leaf gall inducing insect affect the growth of plants by reducing the leaf area available for photosynthesis. Aspondylia pongamiae (Diptera: Cecidomyiidae) which has been identified to induce flower and leaf galls on P. pinnata. These gall inducers adversely affect the quality of leaves of pongamia in turn reducing its economic utility. Experiments were conducted at the College of Forestry, Sirsi, during 2014-15. Among the eleven clones evaluated, four clones, Hariharapura, Sathenahalli, Muddanahalli and Baragaru were found to be Moderately Resistant (MR) in both open and polyhouse conditions. The growth performance of different pongamia clones as measured through plant height and collar diameter did not significantly vary due to infestation of gall midge. The difference in increases or decrease in growth parameter may be not due to gall midge infestation alone but may be due to phenotypic and genotypic variation among the pongamia clones because of their superior characters over the local seedling. Among the four biochemical traits estimated, total phenol and potassium content in leaves did not show significant difference in infested and healthy leaves. However the clones which were moderately resistant had increased nitrogen content and reduced total soluble sugar under infested leaves than healthy leaves. Reduction in total sugar and increased nitrogen content in leaves could be a mechanism to resist the infestation of gall midge in P. pinnata.
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    ThesisItemOpen Access
    Studies on Zinc and Ferrous Sulphate Application on Growth and Yield of Rabi Sorghum and Chickpea Intercrops in A Vertisol
    (University of Agricultural Science, Dharwad, 2015-11) Biradar, Nagaraj S.; Sarawad, I.M.
    A field experiment was conducted at RARS. Vijayapur, University of Agricultural Sciences, Dharwad during rabi, 2014-15 to study the effect of zinc and ferrous sulphate application to soil on growth and yield of rabi sorghum + chickpea intercropping system. The soil of the experimental site was low in available Zn (0.54) mg kg-1) and available Fe (3.05 mg kg-1). The treatments included in the experiment were recommended dose of fertilizer (RDF), soil application of ZnSO4 @ 10, 15, 20 kg ha-1 and FeSO4 @ 10, 20, 30 kg ha-1 in combinations. The experiment was laid out in Randomized Complete Block Design (RCBD) with there replications and Twelve treatments, RPP (RDF @ 50:25:00 ::N:P2O5:K2O kg ha-1 + farm yard manure @ 2-3 t ha-1) were applied to all the treatments except RDF treatment. The results of field experiment revealed that, application of RPP + FeSO4 @ 30 kg ha-1 + ZnSO4 @ 20 KG ha-1 was recorded the highest plant height, dry matter production and grain yield of both crops and crude protein content in chickpea grains. However, the treatment RPP + FeSO4 @ 30 kg ha-1 + ZnSO4 @ 20 kg ha-1 was on par with RPP + FeSO4 @ 30 kg ha-1 + ZnSO4 @ 15 kg ha-1. The experimental soil was deficient in zinc and iron. A good response of crops to applied zinc sulphate and ferrous sulphate was noticed. Further, yield and yield attributes, quality parameters (crude protein), nutrient uptake (N, P, K, S, Zn and Fe), available zinc and iron status and net returns were higher with the soil application of RPP + FeSO4 @ 30 kg ha-1 + ZnSO4 @ 20 kg ha-1.
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    ThesisItemOpen Access
    Evaluation of Some Allelopathic Weed Leaf Extracts and Herbicides for Weed Control in Chrysanthemum
    (University of Agricultural Science, Dharwad, 2015-09) Eranna E.; S. R. Salakinkop
    ABSTRACT :- A field experiment to study the evaluation of some allelopathic weed leaf extracts and herbicides for weed control in chrysanthemum was carried out at Main Agricultural Research Station, Dharwad during kharif 2014. The experiment consisted of 12 treatment combinations involving two pre emergence herbicides viz., pendimethalin 30 EC 1.0 kg a.i./ha and alachlor 50 EC 1.5 kg a.i./ha as one factor. Four weed leaf extracts (pre-emergence) viz., Parthenium hysterophorus @ 10 per cent (W1), Cassia sericea @ 10 per cent (W2), Chromolaena odorata leaf extract @ 10 per cent (W3) and combined leaf extract (W4) of W1 + W2 + W3 each at equal concentration of 3.33% as another factor. The experiment was laid out in factorial randomized complete block design with three replications. The combined pre-emergence application of either pendimethalin or alachlor along with combination of all the weed leaf extracts (H1W4:9 and H2W4:9) recorded good control of weeds. The crop toxicity rating observed at 7, 14 and after 21 days after pre-emergence application of herbicides and weed leaf extracts revealed that they caused no injury on the crop growth. Application of pendimethalin 30 EC @ 1 kg a.i./ha as pre-emergence along with combination of all the weed leaf extracts (H1W4) recorded significantly lower total weed population, total dry matter accumulation of weeds, weed index and higher weed control efficiency, plant height, number of branches per plant, leaf area, leaf area index, total dry matter production, flower yield (10.82 t ha-1), net returns ( 117597 ha-1) and B C ratio (3.38). However, it was found on par with alachlor 50 EC @ 1.5 kg a.i./ha along with combination of all weed leaf extracts (H2W4) and weed free check (C1) with respect to weed control, crop growth, flower yield and yield attributes
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    ThesisItemOpen Access
    Selection of Parents for Developing the Mapping Populations And Validation of Markers for Studying Pod Shattering in Mungbean (Vigna radiata)
    (University of Agricultural Science, Dharwad, 2015-11) Nirmalbharathi M.; Bhat, Sumangala
    Seventy six mungbean (Vigna radiata) genotypes were screened for pod shattering and related traits during summer 2014, kharif 2015 and summer 2015 under field condition. Also laboratory method such as incubation at room temperature and alternate wetting and drying were standardized and the genotypes showed significant variation for the traits studied. Summer season was found to be more suitable for pod shattering. The percentage of pod shattering ranged from 0- 54%. Based on the pod shattering percentage, genotypes were grouped into five classes according to the scale given by AVRDC, (1979). Using single marker analysis fourteen already identified SSRs markers were used to validate the germplam. Of which 3 markers were found to be significantly associated with pod shattering and five showed association with yield traits. One marker (CEDG245) showed significant association with pod shattering in field, incubation at room temperature, alternate wetting and drying with 3.48%, 12.00%, and 3.90% of R2 value respectively. Chinamung and GPM-19 showed high susceptibility to shattering and Pantmung-2, SML-108, NM-1 and COGG912 showed high resistance. The maximum pod shattering observed during summer 2015 was in Chinamung (52%) and GPM-19 (54%) where as Pantmung-2, SML-108 and NM-1 did not show any shattering. These resistant and susceptible genotypes were screened with 34 SSR markers and total 12 polymorphic SSR makers were identified between Chinamung and Pantmung-2 and nine were between Chinamung and SML-108. Molecular diversity analysis showed resistant and susceptible parents come under different clusters. Also PIC value of 34 markers ranged from 0 (GMES4232 and CEDG012) to 0.89 (X-20 and X-21) with an average of 0.41. Two sets of crosses were made to develop the mapping population viz., Chinamung x Pantmung-2 and Chinamung x SML108. Using polymorphic markers true hybrid nature was confirmed in both the crosses and F2 seeds were collected.
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    ThesisItemOpen Access
    Management of Stem Rot of Groundnut (Arachis hypogaea L.) Caused by Sclerotium Rolfsii Sacc. Through Indigenous Techniques
    (University of Agricultural Science, Dharwad, 2015-08) Chandra Shekar H.S.; Adiver, S.S.
    Groundnut (Arachis hypogaea L.) is an important oil seed crop. Stem rot caused by Sclerotium rolfsii is major constraint in groundnut production. Survey revealed that disease incidence ranged from 0.00 to 27.40 per cent in rabi/summer (2013-14) and 1.29 to 36.95% in kharif (2014-15). Disease incidence recorded highest in black soil (14.75%), spanish bunch varieties (13.12 %) and monocroping (22.38 %). Maximum incidence was recorded in kharif season. Maximum growth was recorded at 10th day with dry mycelial weight of 290.74 mg on PDB. Among 25 isolates variability was observed in colony characters, radial growth and sclerotial characters in Richards’ agar, Browns’ agar and Potato Dextrose Agar. In sclerotial character shape varied from subspherical to irregular, size ranging from 0.80 mm (Kpl 2) to 1.79 mm (Kpl 3). Test weight recorded maximum in Kpl 3 (285.51 mg) and minimum in Kpl 2 (44.39 mg). In aggressiveness study among 25 isolates, 15 isolates showed highly aggressiveness, four moderately aggressive and six were less aggressive. In the molecular variability studies, eight representative isolates were amplified with ITS primers and four were sequenced and confirmed as Sclerotium rolfsii from NCBI BLAST programme with identity ranging from 85 to 94 per cent and they were further grouped into three clusters during phylogenetic tree analysis. In glasshouse condition eight treatments were imposed in which buffalo urine + neem cake extract at 15 per cent recorded less disease incidence (14.29%) and highest disease incidence (85.71%) was observed in control. In field studies, buffalo urine + neem cake extract at 15 per cent showed less disease incidence (25.89%) with yield contribution of 1509.00 kg/ha, which was on par with soil application of Trichoderma harzianum with disease incidence of 26.96 per cent with yield contribution of 1489.50 kg/ha and highest disease incidence (72.47%) was observed in control.
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    ThesisItemOpen Access
    Production and Marketing of Watermelon in Haveri District, Karnataka – an Economic Analysis
    (University of Agricultural Science, Dharwad, 2015-06) Chijjeri, Yashodhar; Hosamani, S.B.
    In Haveri district, where the study has been conducted Watermelon is being grown on commercial scale. The area under Watermelon in the district is 1671 ha and production is 45173 tonnes during 2011-12. The present study covers the production and marketing of watermelon and identifies the problems faced by the watermelon cultivator in its cultivation and marketing. It envisages suggesting possible corrective measure to bring about the desired improvement in production and marketing of water melon. The present study was taken up with overall objective of enquiring into economics of production and marketing of Watermelon in Haveri district. Study found that the total labour employed in watermelon production was about 41 man days of human labour per ha in watermelon production seeds were used at the rate of 1.26 kgs per hectare of land. The net return per hectare of watermelon cultivation obtained by the sample farmers was Rs. 153953 and also indicated that the obtained BC ratio was 3.66. Resource use efficiency concerned elasticity of production of human labour and chemical fertilizers was positive (0.008) and negative (0.65) with 5 per cent level of significance respectively. Channel-I: Producer -commission agent cum wholesaler retailer- consumer was most commonly used (76%) by the sample water melon growers. channel-I the farmers could realize 67.21 per cent of the consumer price with a net price of Rs. 7520 per ton. The rest 72.20 per cent was comprised of marketing cost and profit margin of the intermediaries. Majority of the watermelon growers 69.16 in the study area expressed the problem of incidence of diseases and pests which needs to be addressed effectively. About 100 per cent of farmers opinioned that there was lack of support price in market.
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    ThesisItemOpen Access
    Productivity of Sesame (Sesamum indicum L.) as Influenced By Ratios and Levels of Nitrogen and Phosphorus During Summer
    (University of Agricultural Science, Dharwad, 2015-12) Udaya Kumar; Lokanath H.
    A field experiment was conducted at MARS, Dharwad in medium black clay soil during summer season 2014 under irrigated situation. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications to study the productivity of sesame (Sesamum indicum L.) as influenced by ratios and levels of nitrogen and phosphorus during summer. Sesame cultivar DS 5 was raised with twelve ratios and levels of nitrogen (N) and phosphorus (P2O5) fertilizers at a constant potassium fertilizer rate (25 kg K2O ha-1). The treatment receiving N/P fertilizer ratio of 1.60 with the split application of nitrogen favourably influenced yield and yield parameters of sesame. The treatment receiving N/P fertilizer ratio of 1.60 with the split application of nitrogen resulted in more number of capsules plant-1 (70.7), capsule weight (0.412 g), number of seeds capsule-1 (74.0), seed weight capsule-1 (0.213 g), seed weight plant-1 (12.223 g), 1000 seed weight (3.731 g), threshing percentage (51.22), seed yield (2037 kg ha-1), stalk yield (4339 kg ha-1) and harvest index (0.32) over treatment receiving N/P fertilizer ratio of 1.60 without split application of nitrogen and other treatments. Split application of nitrogen in the treatments which received N/P fertilizer ratios of 0.78, 2.00, 2.40 and 3.00 also found advantages in improving yield components of sesame. Treatment receiving N/P fertilizer ratio of 1.60 with the split application of nitrogen produced highest oil yield (923 kg ha-1) over rest of the treatments. The treatment which received N/P fertilizer ratio of 2.00 (50 N, 25 P2O5 and 25 K2O kg ha-1) resulted in higher uptake of nutrients (128.31 N, 23.54 P2O5 and 25.38 kg K2O kg ha-1) N/P fertilizer ratio of 1.60 (40 kg N, 25 kg P2O5, 25 kg K2O ha-1) with split application of N fertilizer) resulted in higher net monetary returns (74,711 Rs ha-1) over other fertilizer management practices.