Kaliamoorthy Krishnappa

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Mosquito-borne diseases have an economic impact, including loss in commercial and labor outputs, particularly in countries with tropical and subtropical climates; however, no part of the world is free from vector-borne diseases. In mosquito control programs, botanical origin may have the potential to be used successfully as eggs, larvae, and adult. The(More)
OBJECTIVE To determine the ovicidal and repellent activities of methanol leaf extract of Ervatamia coronaria (E. coronaria) and Caesalpinia pulcherrima (C. pulcherrima) against Culex quinquefasciatus (Cx. quinquefasciatus), Aedes aegypti (Ae. aegypti) and Anopheles stephensi (An. stephensi). METHODS The ovicidal activity was determined against three(More)
BACKGROUND & OBJECTIVES Development of plant-based alternative compounds for mosquito control has gained importance now-a-days, in view of increasing resistance in mosquito vectors to existing insecticides. The larvicidal and repellent activities of benzene, chloroform, hexane and methanol leaf extracts of Indian medicinal plant, Adansonia digitata were(More)
OBJECTIVE To investigate the larvicidal and ovicidal activities of acetone, benzene, hexane and methanol leaf extracts of Basella rubra and Cleome viscosa against dengue vector, Aedes aegypti. MATERIALS AND METHODS Twenty five early third instar larvae of Aedes aegypti were exposed to various concentrations and were assayed in the laboratory by using the(More)
In the present study effort have been made to find the anti-bacteria effect of six medicinal plant essential oil namely, Ocimum bascilicum (Basil oil), mentha arvensis (Cormint oil),Zingiber officinale(ginger oil),citrus limon(lemon oil), thymus mastichina (Marjoram oil) and mentha spicata (Spearmint oil) were assessed for anti bacterial activity against(More)
Nematology on a world basis has experienced phenomenal growth during the last 25 years. Major influences responsible for this growth are discussed. Education of nematologists has been most evident in only a few developed nations. Some developing countries are now beginning to train nationals as nematologists. Research programs in developed countries are(More)
Every one is greedy and wants to produce more and more at the cost of the nature and the natural resources. The present day natural resource management is a perfect example of how Indian agriculture is a%ecting the eco-systems. The excessive dependence on chemical pesticides led to the development of resistance in pests to pesticides, out breaks of(More)
To determine the larvicidal activity of various extracts of Gymnema sylvestre against the Japanese Encephalitis vector, Culex tritaeniorynchus in Tamilnadu, India. To identify the active principle present in the promising fraction obtained in Chlorofom:Methanol extract of Fraction 2. The G. sylvestre leaf extracts were tested, employing WHO procedure(More)
AIM To determine the larvicidal activity of various extracts of Gymnema (G.) sylvestre against the Japanese Encephalitis vector, Culex tritaeniorynchus in Tamilnadu, India. To identify the active principle present in the promising fraction obtained in Chlorofom:Methanol extract of Fraction 2. MATERIALS AND METHODS The G. Sylvestre leaf extracts were(More)
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