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Balaji, K.
- Study on the Effectiveness of Pesticides against Cowpea Aphid (Aphis craccivora) Koch
Abstract Views :127 |
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Authors
Affiliations
1 College of Agricultural Technology, Theni (T.N.), IN
1 College of Agricultural Technology, Theni (T.N.), IN
Source
International Journal of Plant Protection, Vol 9, No 1 (2016), Pagination: 146-149Abstract
Considering the importance of safe food, avoiding of excess pesticide application and pesticide pollution the present study was conducted. In this experiment totally four pesticides were tested against cowpea aphid Aphis craccivora under pot culture experiment at College of Agricultural Technology, Theni. Among the four acetamprid 20 SP (0.125g/ml) proved highly effective against Aphis craccivora compared to the rest of the pesticides with mortality of 98.75 per cent. In case of dosage wise acetamprid 20 SL (0.125g/ml) and imidacloprid17.8 SL(0.25ml/l) proved to be highly effective with mortality percentage of 98.33 and 86.66, respectively. Thus, it is concluded that all the studied pesticides, Acetamprid proved effective to control the cowpea aphids.Keywords
Chemical Pesticide, Efficiency, Cowpea, Aphid.- Correlation Studies on Incidence of Eriophyid Mite Population A. guerreronis with Weather Parameters
Abstract Views :137 |
PDF Views:0
Authors
K. Balaji
1,
Y. Hariprasad
1
Affiliations
1 Department of Entomology, Annamalai University, Chidambaram (T.N.), IN
1 Department of Entomology, Annamalai University, Chidambaram (T.N.), IN
Source
International Journal of Plant Protection, Vol 9, No 1 (2016), Pagination: 268-271Abstract
A study was conducted at Department of Entomology, Annamalai University, Chidambaram, Tamil Nadu during 2000-2002. The meteorological parameters such as maximum, minimum temperatures, relative humidity, rainfall, wind velocity, hours of sunshine were correlated with mite population and correlation coefficients obtained were revealed that maximum, minimum temperature and wind velocity were positively correlated. Relative humidity, rainfall and sunshine were negatively correlated. The increase in these parameters decreased the mite population. By using the regression equations mean mite population /8mm2 can be predicted for a given set of meteorological parameters. A unit increase in maximum temperature keeping other parameters constant resulted in increase in population of 1.31/8mm2 area. In contrast, a unit increase in rainfall resulted in decrease in mite population of 0.83/8mm2.Keywords
Coconut, Eriophyid Mite, A.guerreronis, Correlation.- Evaluation of Biopesticides against Coconut Perianth Mite A. guerreronis Keifer under Laboratory Conditions
Abstract Views :128 |
PDF Views:0
Authors
K. Balaji
1,
Y. Hariprasad
1
Affiliations
1 Department of Entomology, Annamalai University, Chidambaram (T.N.), IN
1 Department of Entomology, Annamalai University, Chidambaram (T.N.), IN