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Bean Gall Weevil and Blister Beetle as New Pests on Red Kidney Bean (Phaseolus vulgaris L.) in India
Abrol, D.P.,Ramamurthy, V.V.,Srivastava, K. Korean Society of Applied Entomology 2006 Journal of Asia-Pacific Entomology Vol.9 No.4
Red kidney bean (Phaseolus vulgaris L.) an important cash crop is attacked by eight species of insect pests which cause considerable damage. They included thrips, Scirtothrips dorsalis; aphids, Aphis craccivora; whitefly, Bemisia tobaci; hairy caterpillar, Spilosoma obliqua; stemfly, Ophiomyia phaseoli; pulse beetle Callosobruchus chinensis; bean gall weevil Alcidodes signatus and blister beetle Cyaneolylta coerculea. Of all these pests, bean gall weevil Alcidodes signatus and blister beetle, Cyaneolylta coerculea were the serious pests and recorded for the first from the crop and the country.
Foraging Ecology of Insect Pollinators Visiting Cherry Flowers and Their Impact on Fruit Production
D. P. Abrol 한국양봉학회 2005 韓國養蜂學會誌 Vol.20 No.2
Observations on insect pollinators revealed that more than 11 species of insects belonging to order Hymenoptera and Diptera frequented cherry flowers. of all the flower visiting insects, honey bees Apis mellifera and Apis cerana were the most abundant and comprised more than 55% followed by Lasioglossum sp. 33% and Xylocopa valga 3.78%. Peaks of abundance and activity of all these insects were observed between 1100-1400 h and during the mid flowering when the temperature ranged between 21.5-25.00C and flower density between 24 to 100%. Foraging rates on an average were 7.7, 7.5, 2.7 and 24.03 for nectar collectors of Apis mellifera, Apis cerana, Lasioglossum and X. valga, respectively. Apis mellifera foragers on an average carried heavier pollen and nectar loads than Apis cerana and Lasioglossum sp However, X. valga carried more number of loose pollen grains than Apis mellifera, Apis cerana, Lasioglossum sp and Eristalis sp. Percentage fruit set was significantly higher at 100m (28.2%) from the apiary than at 500m (9.0%). Similarly, number of colonies/㏊ also significantly influenced the fruit set fruit yield/plant in the cherry orchards.
Two Decades of Development in Apiculture in Jammu and Kashmir - A Brief Review
D. P. Abrol 한국양봉학회 2006 韓國養蜂學會誌 Vol.21 No.2
The State of Jammu and Kashmir (32° - 17 to 37 - 05' N latitude and 72° - 40' to 80° - 30' E longitude) represents unique area of the country which comprises of agro-clirnatic zones ranging from low altitude subtropical and intermediate to temperate and cold arid alpine zone. Temperatures range from -45° to 45° and above. Such diversity of geographical features plays a dominant role in determining the topography, climate and plant species present in the region. The management of honeybee colonies and their utilization for honey production and pollination also involves different strategies for different regions. The studies initiated at our centre have addressed some of the problems which are briefly reviewed in this paper.
D. P. Abrol,Devinder Sharma 한국양봉학회 2011 韓國養蜂學會誌 Vol.26 No.3
The studies conducted during 2005~06 to evaluate the relative toxicity and amorphogenic effects of imidacloprid and demeton-o-methyl on the honeybee brood (A. mellifera) revealed that both demeton -o-methyl and Imidacloprid were highly toxic to eggs and 1~2 day old larvae at all the concentrations as no eggs or larvae survived. Demeton-o-methyl were also found to be highly toxic to 3~4 and 5~6 days old larvae at recommended concentration resulting in complete mortality of treated larvae. However, at half and one fourth of recommended concentrations larval mortality and number of deformed bees significantly decreased. Imidcaloprid was highly toxic to 5~6 days old larvae at recommended and half of recommended concentrations, resulting in complete mortality of treated larvae. However, at one fourth of recommended concentrations, larval mortality and number of deformed bees significantly decreased. The deformed individuals were discoloured, smaller in size having reduced body weight and other dimensions. Wings were absent or rudimentary. Similarly, Carbaryl proved highly toxic to eggs. At the recommended and half of the recommended concentrations all the eggs in the cells treated with carbaryl died and no cell was capped. However at one fourth of the recommended concentration, mortality was 76.67 percent. 1~2 and 3~4 days old larvae were highly susceptible to the recommended concentration (0.10%). There was 100 per cent mortality of larvae treated with recommended concentration. No capping occurred. However, 5~6 day old larvae were less susceptible to recommended concentration as compared to 1~2 and 3~4 day old larvae. Capping of the cells was also abnormal and emergence occurred on 23<SUP>rd</SUP> day in all the insecticides except endosulfan. Endosulfan was relatively safer to honeybee brood.