|
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 |
|
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