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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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2006 - 200912010 - 20131
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Subject: Agricultural Entomology × Author: Poornima Matti ×
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Now showing 1 - 3 of 3
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    ThesisItemOpen Access
    Effect of weather parameters on the incidence of major insect pests and their natural enemies in few selected kharif and rabi crops
    (UASD) Poornima Matti; Shekharappa
    Field studies were carried out to address the effect of weather change on the incidence of insect pests during kharif and rabi 2011-12 and 2012-13 at the Main Agricultural Research Station, Dharwad. Forecasting model for pod damage in greengram depicted minimum temperature and rainy days at four weeks lead time is consistently significant positively associated. Higher shoot fly eggs in kharif sorghum were noticed with increase in both minimum temperature and morning RH. At three week before, incidence of deadheart had positive relationship with evening RH and significant negative association with maximum temperature. Forecasting model for per cent defoliation in soybean at two weeks prior showed that morning RH is consistently significant negative association in normal sown crop. However, rainfall had significant positive relationship with foliage damage. Forecasting model for per cent pod damage due to Helicoverpa armigera in chickpea at four weeks before showed minimum temperature is consistently highly significant and negatively associated. Forecasting models developed for deadheart due to shoot fly in M-35- 1, at three week before in late sown crop and minimum temperature only had highly significant positive correlation, whereas, in DSV-4, evening RH had highly significant positive relationship. Forecasting model for aphids per 5cm central twig in safflower showed that solar radiation at four weeks prior is consistently significant and negatively associated. In intercrop, Bt, spinosad, emamectin benzoate and RPP spray efficacy on lepidopteran pests was higher with rise in evaporation, solar radiation and maximum temperature. Whereas, Beauvenia bassiana showed higher efficacy with rise in morning RH and minimum temperature. Validation of forecasting model for per cent deadheart due to shoot fly infestation on rabi sorghum in late sown condition resulted lead week three model gave minimum error (3.66) and performed better in 2008 than 2009 and 2010 years with high R2 value of 0.71.
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    ThesisItemOpen Access
    Evaluation of Diatomaceous earth against Sitophilus oryzae (L.) and Callosobruchus chinensis (L.)
    (UAS, Dharwad, 2006) Poornima Matti; J.S.Awakanavar
    Investigation on effect of formulated diatomaceous earth (DE) protect-it from USA (DE is the fossilized remains of diatoms) for the control of storage insects was carried out for the first time in India in the Department of Entomology, University of Agricultural Sciences, Dharwad, Karnataka Admixture of DE at various concentrations with grains (0.025, 0.05, 0.1, 0.15, 0.2, 0.25 and 0.3%) under laboratory conditions on the rice weevil Sitophilus oryzae (L.) and bruchid, Callosobruchus chinesis (L.) showed 100% mortality of adults at concentration of 0.1% and above. Investigations carried out on the effect of temperature (20, 25, 30 and 350C) and humidity (30, 50, 70 and 90%) at each temperature. The effectiveness of DE admixed at 0.1% showed increased mortality with increasing temperature and decreasing humidity, 100% mortality was observed in all four RHs tried with 350C and only in lower RHs with 300C combinations and at lower temperature 200 only at the lowest RH (30%) combinations. Drastic reduction of moisture content (6.8-8.2%) in DE treated grains at different temperature and humidity was noticed and higher seed germination (>90%) was also observed in DE treated grains for both the insects. Less number of eggs and less adult emergence were recorded at highest temperature with lower RH (30 and 50%) in C. Chinesis. DE @ 0.1% and above concentration recorded higher seed germination (>89%), no seed damage and reduction in moisture content (9.0-10.5%) in both the insects. Effect of DE on reproductive performance of pulse beetle revealed that less number of eggs and less adult emergence was recorded in DE @ 0.1% and above. Sand (20%) and ash (30%) alone were found effective by recording highest adult mortality while sweet flag rhizome powder alone at 0.5% proved to be effective recording 100% mortality, whereas neem cake has no effect on adult mortality.
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    ThesisItemOpen Access
    Effect of weather parameters on the incidence of major insect pests and their natural enemies in few selected kharif and rabi crops
    (UAS Dharwad, 2013) Poornima Matti; Shekharappa
    Field studies were carried out to address the effect of weather change on the incidence of insect pests during kharif and rabi 2011-12 and 2012-13 at the Main Agricultural Research Station, Dharwad. Forecasting model for pod damage in greengram depicted minimum temperature and rainy days at four weeks lead time is consistently significant positively associated. Higher shoot fly eggs in kharif sorghum were noticed with increase in both minimum temperature and morning RH. At three week before, incidence of deadheart had positive relationship with evening RH and significant negative association with maximum temperature. Forecasting model for per cent defoliation in soybean at two weeks prior showed that morning RH is consistently significant negative association in normal sown crop. However, rainfall had significant positive relationship with foliage damage. Forecasting model for per cent pod damage due to Helicoverpa armigera in chickpea at four weeks before showed minimum temperature is consistently highly significant and negatively associated. Forecasting models developed for deadheart due to shoot fly in M-35- 1, at three week before in late sown crop and minimum temperature only had highly significant positive correlation, whereas, in DSV-4, evening RH had highly significant positive relationship. Forecasting model for aphids per 5cm central twig in safflower showed that solar radiation at four weeks prior is consistently significant and negatively associated. In intercrop, Bt, spinosad, emamectin benzoate and RPP spray efficacy on lepidopteran pests was higher with rise in evaporation, solar radiation and maximum temperature. Whereas, Beauvenia bassiana showed higher efficacy with rise in morning RH and minimum temperature. Validation of forecasting model for per cent deadheart due to shoot fly infestation on rabi sorghum in late sown condition resulted lead week three model gave minimum error (3.66) and performed better in 2008 than 2009 and 2010 years with high R2 value of 0.71.