|
in
| Title : |
Eco-friendly Approaches for the Management of Fruitworm and Yellow Leaf Curl Virus of Tomato in Mid- western Region of Nepal |
| Material Type: |
printed text |
| Authors: |
Narayan P. Khanal, Author ; P. Poudyal, Author ; Durga P. Acharya, Author ; Y N Tiwari, Author ; J.B. Basnet, Author |
| Pagination: |
234-239 p. |
| Languages : |
English (eng) |
| Keywords: |
Eco-friendly approaches, He/icoverpa, HNPV, tomato fruitworm, trap
cropping |
| Abstract: |
Fruitworm (Helicoverpa armigera) and yellow leaf curl virus have been the major
production constraints of spring season tomato across its major production domains in
mid-western region of Nepal. With the aim at increasing the accessibility of farmers'
preferred management techniques, Forum "for Rural Welfare and Agricultural Reform
for Development (FORWARD) in collaboration with District Agriculture Development
Offices Banke and Surkhet, and Manikapur Farmers Cooperative, Surkhet, carried out
on-farm trials using the treatments: (for borer- Helicoverpa Nuclear Polyhedrovirus
(HNPV), neem kernel extract, Bakaino leaf extract, timur seed extract, nettle leaf
decomposed in animal urine, and water; and for yellow leaf curl virus- cow milk,
Prevental, Rogor, animal urine and water. Experiments were carried out in 5 farmers'
fields, each in Sitapur VDC of Banke and Latikoili VDC of Surkhet maintaining the plot
size of 5 rrf per treatment in both rainy and spring season of 2006/07 and 2007/08,
respectively. The dynamics of the pests were monitored using both pheromone trap
(Helilure) and trap crops (sunflower and yellow marigold) for borer, and yellow plastic
coated with grease or linseed oil for white fly that transfers virus from diseased to
healthy plants. This initiative employed participatory research and development
modality where farmers were involved in different stakes of activities implementation so
as to empower them for the sustainable management of the pests. The empirical
evidences have shown that HNPV @ 3 mVI significantly reduced the pest by 60% (up
to 100% in laboratory condition) and increased the yield by 60-90%. This was followed
by cypermethrin @ 1 mVI, neem seed kernel extract (1: 10 in water) and nettle extract
decomposed in animal urine (1:10 in water). One farmer group in Latikoili has started
recycling virus inoculum from larvae collected from the field. Moreover, this research
has concluded that sowing of sunflower seed @ 10-12 plants/Kattha in boarder rows
about 7 days earlier than transplanting tomato seedlings in the main field is effective.
Moreover, spraying fresh cow/buffalo milk {10-15 mill three times after initiation of the
disease was found effective for the management of virus disease (TYLCV) as most of
the diseased plants revived after the application of spray treatments across the trials
and thus significantly increased the yield and productivity of tomato. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=253 |
in
Eco-friendly Approaches for the Management of Fruitworm and Yellow Leaf Curl Virus of Tomato in Mid- western Region of Nepal [printed text] / Narayan P. Khanal, Author ; P. Poudyal, Author ; Durga P. Acharya, Author ; Y N Tiwari, Author ; J.B. Basnet, Author . - [s.d.] . - 234-239 p. Languages : English ( eng) | Keywords: |
Eco-friendly approaches, He/icoverpa, HNPV, tomato fruitworm, trap
cropping |
| Abstract: |
Fruitworm (Helicoverpa armigera) and yellow leaf curl virus have been the major
production constraints of spring season tomato across its major production domains in
mid-western region of Nepal. With the aim at increasing the accessibility of farmers'
preferred management techniques, Forum "for Rural Welfare and Agricultural Reform
for Development (FORWARD) in collaboration with District Agriculture Development
Offices Banke and Surkhet, and Manikapur Farmers Cooperative, Surkhet, carried out
on-farm trials using the treatments: (for borer- Helicoverpa Nuclear Polyhedrovirus
(HNPV), neem kernel extract, Bakaino leaf extract, timur seed extract, nettle leaf
decomposed in animal urine, and water; and for yellow leaf curl virus- cow milk,
Prevental, Rogor, animal urine and water. Experiments were carried out in 5 farmers'
fields, each in Sitapur VDC of Banke and Latikoili VDC of Surkhet maintaining the plot
size of 5 rrf per treatment in both rainy and spring season of 2006/07 and 2007/08,
respectively. The dynamics of the pests were monitored using both pheromone trap
(Helilure) and trap crops (sunflower and yellow marigold) for borer, and yellow plastic
coated with grease or linseed oil for white fly that transfers virus from diseased to
healthy plants. This initiative employed participatory research and development
modality where farmers were involved in different stakes of activities implementation so
as to empower them for the sustainable management of the pests. The empirical
evidences have shown that HNPV @ 3 mVI significantly reduced the pest by 60% (up
to 100% in laboratory condition) and increased the yield by 60-90%. This was followed
by cypermethrin @ 1 mVI, neem seed kernel extract (1: 10 in water) and nettle extract
decomposed in animal urine (1:10 in water). One farmer group in Latikoili has started
recycling virus inoculum from larvae collected from the field. Moreover, this research
has concluded that sowing of sunflower seed @ 10-12 plants/Kattha in boarder rows
about 7 days earlier than transplanting tomato seedlings in the main field is effective.
Moreover, spraying fresh cow/buffalo milk {10-15 mill three times after initiation of the
disease was found effective for the management of virus disease (TYLCV) as most of
the diseased plants revived after the application of spray treatments across the trials
and thus significantly increased the yield and productivity of tomato. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=253 |
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