Eco-Friendly Management Of Important Sucking Pests Of Chilli
By: Santhosh Kumar T.
Contributor(s): Reghumath P (Guide).
Material type:
BookPublisher: Vellayani Department of Agricultural Entomology, College of Agriculture 1999DDC classification: 632.6 Online resources: Click here to access online Dissertation note: MSc Abstract: The experiment was conducted in the Instructional Farm, College of
Agriculture, Vellayani during 1997-98. The results of the pot culture experiment
for studying the symptoms developed by Aphids CA. gossypii) , Thrips (S. dorsalis)
and mites (P. latus) revealed that P. latus were the most serious sucking pest than
aphids and thrips in the combined release. The population build up of each pest
were high when released alone, while in combined release the maximum build up
was recorded by mites
The most prominent symptoms developed by aphids were yellowing of
older leaves and reduction in the size of tender leaves and shoots. The symptoms
developed by thrips were cupping, upward rolling of leaf margins, reduction in the
size of leaves, brittled leaves and finally the plants became stunted. While the
noticeable symptoms of mites were, downward curling of leaves, elongation of
leaves, inverted boat shaped leaves, silvery lining on the ventral surface of leaves
and in advanced stages the leaves and tender portions of stem became hard and
brittle and finally the plants became stunted.
The results obtained in the feeding efficiency study of natural enerrues
recorded the efficient feeding of spiders and coccinellids on aphids. On thrips
spiders were fed efficiently while coccinellids did not feed on thrips.
Regarding the field experiment for the evaluation of insecticides,
acaricides and botanicals and their combinations, the treatment plant extract of
1
101
A. paniculata with garlic (l 0 %) gave good control of aphids, thrips and mites
resulted in maximum yield as compared to other treatments. The population build
up of natural enemies was also maximum in this treatment. Neem seed oil
emulsion at 10 per cent concentration was also foune! to give good control of
sucking pests. Among the chemicals tested monocrotophos 0.05 per cent and
malathion 0.2 per cent gave good control of three sucking pests. Regarding the
combinations of bot anica Is with chemicals, neem seed oil emulsion with each one
of the three chemicals gave promising results.
| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
Theses
|
KAU Central Library, Thrissur Theses | 632.6 SAN/EC (Browse shelf) | Available | 171541 |
MSc
The experiment was conducted in the Instructional Farm, College of
Agriculture, Vellayani during 1997-98. The results of the pot culture experiment
for studying the symptoms developed by Aphids CA. gossypii) , Thrips (S. dorsalis)
and mites (P. latus) revealed that P. latus were the most serious sucking pest than
aphids and thrips in the combined release. The population build up of each pest
were high when released alone, while in combined release the maximum build up
was recorded by mites
The most prominent symptoms developed by aphids were yellowing of
older leaves and reduction in the size of tender leaves and shoots. The symptoms
developed by thrips were cupping, upward rolling of leaf margins, reduction in the
size of leaves, brittled leaves and finally the plants became stunted. While the
noticeable symptoms of mites were, downward curling of leaves, elongation of
leaves, inverted boat shaped leaves, silvery lining on the ventral surface of leaves
and in advanced stages the leaves and tender portions of stem became hard and
brittle and finally the plants became stunted.
The results obtained in the feeding efficiency study of natural enerrues
recorded the efficient feeding of spiders and coccinellids on aphids. On thrips
spiders were fed efficiently while coccinellids did not feed on thrips.
Regarding the field experiment for the evaluation of insecticides,
acaricides and botanicals and their combinations, the treatment plant extract of
1
101
A. paniculata with garlic (l 0 %) gave good control of aphids, thrips and mites
resulted in maximum yield as compared to other treatments. The population build
up of natural enemies was also maximum in this treatment. Neem seed oil
emulsion at 10 per cent concentration was also foune! to give good control of
sucking pests. Among the chemicals tested monocrotophos 0.05 per cent and
malathion 0.2 per cent gave good control of three sucking pests. Regarding the
combinations of bot anica Is with chemicals, neem seed oil emulsion with each one
of the three chemicals gave promising results.
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