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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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Thesis Type: M.Sc × Subject: Agricultural Entomology × Type: Thesis × Author: Ravikumar ×
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    ThesisItemOpen Access
    SEASONAL INCIDENCE. VARIETAL PREFERENCE AND MANAGEMENT OF BER FRUIT BORER AND FRUIT FLIES
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, DHARWAD, 2004) Ravikumar; Nandhihalli, B S
    "Investigation on the Seasonal incidence, Varietal preference and management of ber fruit borer and fruit flies were carried out from 1997-98 at the Regional Agricultural Research Station, Bijapur. The incidence of fruit borer and fruit flies started in second week of August and first week of October respectively. The borer activity reached high from second week of November to the end of January. Whereas, high incidence of flies noticed from November to third week of January. Among the eight varieties of ber screened, Illaichi recorded lowest infestation and is considered as moderately resistant against fruit borer and fruit flies. Umran recorded highest infestation of fruit borer while Sanaur-2, Umran, kadaka and Sanaur-6 were moderately susceptible to fruit flies infestation. Umran recorded maximum of 5 fruit borer larvae per fruit while Sanaur-2 had recorded maximum of 10 larvae of fruit flies per fruit. Increase in the fruit size resulted in the increase of oviposition by both the pests. Maximum emergence of adults was observed when pupae were at a depth of 2 cm below soil and loss due to fruit borer and fruit flies together was found to vary from 70.81 to 71.28 with an average of 71.05 per cent. The maximum loss due to damage by borer was 42.92 and that by flies was 28.12 per cent. Monocrotophos 36 SL was found effective against fruit borer and the same with jaggery was effective against fruit flies and NSKE 5% was found effective among botanicals in reducing the pest infestation and for effective control of pests three sprays at 12,14 and 16^ week after 50 per cent flowering was more economical. The residues of the chemicals after the last spray were below the tolerance limit."
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    ThesisItemOpen Access
    EVALUATION OF ORGANICS AND INDIGENOUS PRODUCTS FOR THE MANAGEMENT OF Helicouerpa armigera (Bubner) IN CHILLI
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE, 2004) Ravikumar; Basavana Goud, K
    "A field trail was carried out using chilli var. Byadagi Dyavanoor during kharif season of 2002-03 at Main Agricultural Research Station, University of Agricultural Sciences, Dharwad to evaluate the organic amendments and indigenous products for the management of H. armigera. Studies on the effect of organic amendments on H. armigera revealed that among the different organic amendments, soil application of neem cake @ 1 t/ha was very effective in recording lowest eggs (0.69), larval population (0.62) and lowest fruit damage (6.5%) being on par with vermicompost @ 2 t/ha. Next best treatments were neem cake @ 0.5 t/ha + 50 per cent RDF, vermicompost @ 1 t/ha + 50 per cent RDF and RDF, Neem cake @ 1 t/ha recorded highest green chilli yield of 83.47 q/ha being on par with RDF (79.00 q/ha) and RPP (89.33 q/ha). These were followed by vermicompost @ 2 t/ha + 50 per cent RDF (76.00 q/ha) and neem cake @ 0.5 t/ha + 50% RDF (72.00 q/ha). Highest B:C ratio of 3.88 was noticed in neem cake @ 1 t/ha from among the organic amendments evaluated. Studies on the effect of indigenous sprays on H. armigera in chilli revealed that from among the indigenous products NSKE 5 per cent recorded lowest mean egg (1.15/plant), larval population (1.01/plant) and per cent fruit damage in NSKE 5 per cent (7.57%). This was followed by garlic chilli kerosene extract 3 per cent, NSKE 5 per cent + cow urine 10 per cent and NSKE 5 per cent + garlic extract 10 per cent. The efficacy of NSKE 5 per cent (79.32 q/ha), NSKE 5 per cent + cow urine 10% (78.00 q/ha), garlic chilli kerosene extract 3 per cent (76.23 q/ha), NSKE 5 per cent + garlic extract 3 per cent (83.67 q/ha) remained same in recording higher yield of green chilli. All the organic amendments evaluated either alone or their half doses in combiantion with 50 per cent RDF were safe to coccinellids {Menochiilus sexmaculatus Fab and Coccinella septumpunctata Thumb.) and Chrysoperal carnea Steph. in chilli ecosystem. All the indigenous sprays included in the study were safe to coccinellids and C. carnea except garlic chilli kerosene extract 3 per cent."