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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: Ph.D × Subject: Agricultural Entomology ×
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Now showing 1 - 9 of 107
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    ThesisItemOpen Access
    Studies on the Pest Complex and Integrated Management of Pod Borer Complex in Pea (Pisum sativum L.)
    (University of Agricultural Science, Dharwad, 2016-06) Abhilasha C.R.; Shekharappa
    Studies on the population dynamics of pea pests in different dates of sowing, estimation of crop loss due to the incidence of sucking pests and pod borer complex, screening of varieties against key pests and management of sucking pests and pod borers were undertaken during kharif 2014 and 2015 at the Main Agricultural Research Station (MARS), University of Agricultural Sciences, Dharwad in randomized complete block design (RCBD). The crop sown during Is fortnight of June recorded least incidence of all insect pests including pod borers. The least flower (22.66 %), pod (33.86 %) and seed damage (35.15 %) were recorded on the crop sown during Ist fortnight of June. The highest avoidable loss (59.07 %), pod yield (39.82 q/ha) and per cent increase in yield over control was (144.58 %) recorded in fully protected plots treated with flubendiamide 480 SC @ 0.5 ml/l and carbofuran 3 G @ 12 kg/acre. The avoidable loss due to the sucking pest was 27.18 per cent. From among 15 varieties least thrips population was observed on Arka Sampoorna (1.10/ three leaves) followed by Arka Ajit (1.13 thrips/ three leaves). Against leaf miner, Arka Sampoorna, Arka Karthika, Arka Ajit and GS-10 were found to be moderately resistant with infestation index of 0.36, 0.39, 0.45 and 0.47, respectively. Arka Sampoorna and Arka Ajit were found to be resistant to pod borers with least per cent pod damage of 16.56 per cent and 17.08 per cent, respectively. Studies on management of sucking pest revealed that acetamprid 20 SP 1 g/l and NSKE 5 % was effective against thrips, leaf hopper and leaf miner. Flubendiamide 480 SC @ 0.5 ml/l and among biopesticides NSKE 5 % was effective against pod borer complex viz., Helicoverpa armigera, Cydia nigricana, Lampodies bioeticus and Spodoptera exigua in pea.
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    ThesisItemOpen Access
    STUDIES ON DIFFERENT MANAGEMENT PRACTICES OF THE SUNFLOWER CAPITULUMBORER, Heliothis armigera (HUBNER) (LEPIDOPTERA: NOCTUIDAE)
    (University of Agricultural Sciences, Dharwad, 1990) BASAVARAJA, G C; DEVARAJURS, K C
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    INTEGRATED MANAGEMENT OF THE FRUIT BORER, Helicoverpa armigera (Hubner) [Lepidoptera: Noctuidae] IN TOMATO
    (University of Agricultural Sciences, Dharwad, 2003) KARABHANTANAL, SHREESHAIL S; AWAKNAVAR, J S
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    STUDIES ON ROCK BEE, Apis dorsata F. AND MANAGEMENT FOR HONEY HARVEST
    (University of Agricultural Sciences, Dharwad, 1999) SATTIGI, HANAMANT N; KULKARNI, K A
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    Studies on Comparative Biology and Management of Shoot Weevil, Alcidodes Affaber Aurivillius in Bt Cotton
    (University of Agricultural Science, Dharwad, 2015-07) Halikatti, Ganesha; Patil, S.B.
    Studies on comparative biology and management of shoot weevil, Alcidodes affaber Aurivillius in Bt cotton revealed that, among the different hosts (MRC-7351, DCH 32 and okra) used for comparative biological studies, okra was found to be the most preferred host for growth and development. There was no much variation between Bt and non Bt cotton as for as biological parameters were concerned. Among Bt cotton genotypes, Neeraja, Cash, Bunny and Brahma were found to be promising hybrids by registering lower incidence of shoot weevil. On the contrary, Bt hybrids, Shalimar and MRC-7351 were found to be susceptible lines by recording higher shoot weevil incidence as compared to rest of the genotypes. Moisture percentage and total sugars were positively correlated with shoot weevil infestation. The infestation was negatively correlated with tannin and total phenol content. Whereas, gossypol had no influence on infestation. Further, investigations on optimization of spray schedule for shoot weevil management in Bt cotton revealed the superiority of profenophos 50 EC @ 2.0 mL/L at 30 DAS and 45 DAS by recording significantly lower incidence of shoot weevil, higher seed cotton yield and benefit cost ratio. From the GC-EAD analysis, the compounds 1-Octanol, (E)-3-Dodecene and 3-Ethyl-undecane were identified from male abdomen; 1-Octadecene was identified from male thorax; 4-Ethyl-1-octanol and Heptadecane were identified from female abdomen and Octanal, (2r)-2-amino-2-methyl-3-phenylpropanoic acid and Ethyl benzoyl pyruvate were identified from female thorax. Shoot weevil adults found to diapause within the cotton stalks during summer and emerged after the receipt of summer showers (May-June) and infested summer sown (April-May) okra and early sown cotton crop.
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    ThesisItemOpen Access
    POSSIBILITY OF INTEGRATION OF BIO-AGENTS FOR THE MANAGEMENT OF DIAMONDBACK MOTH, Plutella xylostella (L.) [LEPIDOPTERA : YPONOMEUTIDAE]
    (University of Agricultural Science, Dharwad, 1997) Anuradha, M; Lakkundi, N H
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    EVALUATION OF INSECT PEST MANAGEMENT COMPONENTS IN SOYBEAN ECOSYSTEM
    (University of Agricultural Science, Dharwad, 2002) Patil, Ramanagouda H; Kulkarni, K A
    "The studies were conducted on survey and surveillance of pests associated with soybean, seasonal incidence, nature of damage, influence of cultural practices on the incidence of insect pests and evaluation of ecofriendly methods for effective management of key pests in soybean ecosystem at Main Research Station, University of Agricultural Sciences, Dharwad during 1997 to 1999. Soybean was attacked by 48 phytophagous species, of which 5 belonged to Orthoptera, 13 to Hemiptera, 1 to Thysanoptera, 18 to Lepidoptera, 9 to Coleoptera 2 to Diptera and three were non insect pests. The seedling borers, Melanagromyza sojae Zehnter, Obereopsis brevis Swed; leaf eating caterpillar Spodoptera litura Fab. and pod borer Cydia ptychora Meyrick were key pests during kharif. Whereas, leafminer Aproaerema modicella Deventer, whitefly Bemisia tabaci Genn. and leaf hopper, Amrsca biguttula biguttula Ishida were major during summer. Pod borer incidence was maximum in July sown crop. The per cent incidence of stemfly was low (17.66%) on soybean sown in second week of June whereas it was high (21.70%) with girdle beetle. Lower plant population of 0.28 million plants per ha recorded lower infestation of the seedling borers. The per cent pod borer damage was low (21.43%) on early sown crop during June. Pathogencity of Nomuraea rileyi indicated 88.25 and 18.25 per cent mortality of Spodoptera litura and Cydia ptychora after 10 days of spray, respectively. The mycopathogen occurred in epizootic form on S.litura in soybean between 31 and 38th with peak activity in 34th and 35th standard week. N.rileyi @ 2.4 x 108 conidia/1 was most effective in reducing the larval population. Among botanicals, NSKE (5%), Vitex negundo (5%) and combination of NSKE + SINPV proved effective in reducing the larval population and recording higher seed yield with better B:C ratios. Seed treatment with thiamethoxam and imidacloprid resulted in lower incidence of seedling borers and higher yield of soybean. Lambdacyhalothrin and chlorpyriphos established superiority in lowering larval population, pod damage and higher seed yield."
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    ThesisItemOpen Access
    EVALUATION OF BIORATIONALS IN THE IPM OF SORGHUM STEM BORER, Chilo partellus (Swinhoe)
    (University of Agricultural Science, Dharwad, 2001) Shekarappa; Kulkarni, K A
    ABSTRACT NOT AVAILABLE
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    ThesisItemOpen Access
    EXPLORATION OF Apis cerana F. FOR ENHANCING THE PRODUCTIVITY OF SUNFLOWER, SAFFLOWER AND WATERMELON
    (University of Agricultural Science, Dharwad, 2001) William Rajashekar, D; Lingappa, S
    Investigations were carried out to study the effect of bee pollination on the imitative and qualitative yield parameters in watermelon, sunflower and ower from 1995 to 1999 at different locations in the transitional zone of latakia. In watermelon, crop enclosed with bees proved to be most beneficial in MCing the quantitative parameters irrespective of bee density (2 and 4 fragments) both at 30 days after treatment and harvest. Two and four frame colony 5 recorded 34.45 and 35.58 tonnes/ha compared to 1 7.56 tonnes/ha in the open nation and 3.74 tonnes/ha in crop deprived of pollinators. Large scale evaluation (0.4 ha) on the influence of bee density on pollination: ated that productivity recorded was in proportion to bee density. Higher activity of 26.74 tonnes/ha was noticed in 5 colonies/ha followed by 19.83 .5 colonies/ha plot vis-a-vis 16.07 tonnes/ha in open pollination. In safflower, enclosure of bees with 2 and 4 frames/60 m^ enhanced yield ificantly to 14.94 and 17.41 q/ha, respectively as compared to 9.08 q/ha in I deprived of pollinators and 11.26 q/ha in open pollination. In the open field jriments crop pollinated by higher density (5 colonies/ha) produced 14.69 I compared to 12.63 q/ha in 2.5 colonies/ha. The lowest yield was recorded le control plot (10.67 q/ha). In sunflower (Morden), crop caged with 4 frames of bees and crop sprayed 1 Bee Q @ 12.5 g /I twice proved better by recording 8.71 and 8.75 q/ha,) actively. Crop benefitting from only natural pollinators yielded 5.13 q/ha.dling vigor (shoot and root length) was higher in the seedlings raised from pollinated plots. Under open field, conditions crop benefitting from supplementary definition to natural pollination recorded higher filled seeds, seed set, and heavier ds which contributed to higher yield. In the hybrid seed production of KBSH-1, open pollination supplemented 1 hand pollination proved to be better resulting in higher yield (10.25 q/ha). valuation of differential densities of bees under open field conditions was optional to bee density with 2.70 q/ha in 5 colonies/ha followed by 1.50 q/ha .5 colonies/ha. Crop without the benefit of additional bee population recorded 0 q/ha. Among the three crops evaluated, bees played a vital role in enhancing the productivity of watermelon followed by sunflower (Morden) and safflower