in
Title : |
Evaluation of Bio-Pesticides Against Tomato Fruit Worm, Helicoverpa Armigera Hubner, on Tomato at Khumaltar |
Material Type: |
printed text |
Authors: |
Paneru, R.B., Author ; S. Aryal, Author |
Pagination: |
391-397 p. |
Languages : |
English (eng) |
Keywords: |
bio pesticides, environment, human health, tomato fruit worm. |
Abstract: |
Tomato production has become risky in Nepal with the potential for significant losses due to insects. Tomato fruit worm H. armigera is the major problematic insects of tomato and has been considered as the national priority entomological research problem of Nepal. Farmers in general have been using chemical insecticides as prophylactic spray at higher doses to manage this insect. It is reported that a serious unrecoverable problem is arising due to misuse and overuse of chemical insecticides. Bio-pesticides namely Bacillus tlmringiensis K., Nuclear Polyhedrosis Virus-helicide (NPV-He) and Bio-multi-neem are commercially available bio-pesticides impmted from India and already recommended for the management of insect pests in Nepal. A srudy was carried out to evaluate the potential efficacy of abovementioned bio-pesticides at recommended dose and double than recommended dose against H. am1igera on tomato crops under natural epiphytotic condition for two years (2000/2001 and 2001102) in NARC, Khumaltar complex. Based on the parameters like, quantity of marketable tomato fruit yield and %fruits bored by H. armigera, the treatment Bacillus thuringiensis K. @ 3 g per litre of water - the dose double of recommended, was found superior to other treatments. Minimum number of fruits was bored by the H. armigera in the plants sprayed with chemical pesticides (Thiodane 35 EC @ 1.5 ml per litre water) but the number of fruits rotten was higher than that of fruits treated with B. t. treatmeflls. While considering the possible several negative side effects of chemical pesticides on human health and environments, this study suggests that the application of B.t. @ 3 g per liter water will be the most desirable technique for the management of H. armigera in such a directly consumable tomato fruits. |
Link for e-copy: |
http://elibrary.narc.gov.np/?r=675 |
in
Evaluation of Bio-Pesticides Against Tomato Fruit Worm, Helicoverpa Armigera Hubner, on Tomato at Khumaltar [printed text] / Paneru, R.B., Author ; S. Aryal, Author . - [s.d.] . - 391-397 p. Languages : English ( eng) Keywords: |
bio pesticides, environment, human health, tomato fruit worm. |
Abstract: |
Tomato production has become risky in Nepal with the potential for significant losses due to insects. Tomato fruit worm H. armigera is the major problematic insects of tomato and has been considered as the national priority entomological research problem of Nepal. Farmers in general have been using chemical insecticides as prophylactic spray at higher doses to manage this insect. It is reported that a serious unrecoverable problem is arising due to misuse and overuse of chemical insecticides. Bio-pesticides namely Bacillus tlmringiensis K., Nuclear Polyhedrosis Virus-helicide (NPV-He) and Bio-multi-neem are commercially available bio-pesticides impmted from India and already recommended for the management of insect pests in Nepal. A srudy was carried out to evaluate the potential efficacy of abovementioned bio-pesticides at recommended dose and double than recommended dose against H. am1igera on tomato crops under natural epiphytotic condition for two years (2000/2001 and 2001102) in NARC, Khumaltar complex. Based on the parameters like, quantity of marketable tomato fruit yield and %fruits bored by H. armigera, the treatment Bacillus thuringiensis K. @ 3 g per litre of water - the dose double of recommended, was found superior to other treatments. Minimum number of fruits was bored by the H. armigera in the plants sprayed with chemical pesticides (Thiodane 35 EC @ 1.5 ml per litre water) but the number of fruits rotten was higher than that of fruits treated with B. t. treatmeflls. While considering the possible several negative side effects of chemical pesticides on human health and environments, this study suggests that the application of B.t. @ 3 g per liter water will be the most desirable technique for the management of H. armigera in such a directly consumable tomato fruits. |
Link for e-copy: |
http://elibrary.narc.gov.np/?r=675 |
|