Distribution Of Phytonematodes And Their Management In Ornamental Crops In Thiruvanantharpuram District
By: Mahesh T.
Contributor(s): Arthur Jacob J (Guide).
Material type:
BookPublisher: Vellayani Department of Agricultural Entomology, College of Agriculture 2001DDC classification: 632.6 Online resources: Click here to access online Dissertation note: MSc Abstract: A random survey was. conducted in Thiruvananthapuram district to gather
information about the nematodes associated with cut flowers( anthurium and orchid),
traditional flowers( rose and jasmine) and ornamental foliage plants ( begonia and
croton).
The root - knot nematode M incognita and burrowing nematode, R. similis
were found associated with these plants. Other nematodes observed were the lance
nematode Hoplolaimus spp.,spiral nematode Helicotylenchus spp. and ring nematode
Criconemoides sp. Among the cut flowers, anthurium was found to be highly
susceptible to root - knot nematode. In ornamental foliage, begonia and traditional
flowers, jasmine were found susceptible to the nematode. Small terminal galls were
seen in anthurium whereas comparatively large sized galls spread throughout the
root system were seen in begonia and croton . Histopathological studies were
conducted in anthurium, jasmine and begonia .The xylem vessels were highly
damaged in these crops due to nematode attack affecting translocation of nutrients
and water.
Studies on nematode management conducted in anthurium revealed no
significant difference in the biometric characters of the plant. Significant reduction
in root weight was observed in plants receiving different treatments. Treatment of
soil with carbofuran 2 kg ai ha' gave maximum reduction of nematode population
in soil. Neem cake 0.5 per cent w/w ,carbofuran lkg ai ha+ neem cake 0.25 per cent
w/w and carbofuran 1 kg ai hal+neem cake 0.25 per cent w/w +G.fasciculatum 200
spores per pot were equally effective in reducing population of nematode in the soil.
G. fasciculatum 200 spores per pot +neem cake 0.25 per cent w/w gave maximum
reduction of nematode in root. A low gall index of 1.25 was observed in plants
treated with carbofuran @ 2 kg ai ha:' and carbofuran @ 1 kg ai hal+neem cake 0.25
per cent w/w.
| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
Theses
|
KAU Central Library, Thrissur Theses | 632.6 MAH/Di (Browse shelf) | Available | 171838 |
MSc
A random survey was. conducted in Thiruvananthapuram district to gather
information about the nematodes associated with cut flowers( anthurium and orchid),
traditional flowers( rose and jasmine) and ornamental foliage plants ( begonia and
croton).
The root - knot nematode M incognita and burrowing nematode, R. similis
were found associated with these plants. Other nematodes observed were the lance
nematode Hoplolaimus spp.,spiral nematode Helicotylenchus spp. and ring nematode
Criconemoides sp. Among the cut flowers, anthurium was found to be highly
susceptible to root - knot nematode. In ornamental foliage, begonia and traditional
flowers, jasmine were found susceptible to the nematode. Small terminal galls were
seen in anthurium whereas comparatively large sized galls spread throughout the
root system were seen in begonia and croton . Histopathological studies were
conducted in anthurium, jasmine and begonia .The xylem vessels were highly
damaged in these crops due to nematode attack affecting translocation of nutrients
and water.
Studies on nematode management conducted in anthurium revealed no
significant difference in the biometric characters of the plant. Significant reduction
in root weight was observed in plants receiving different treatments. Treatment of
soil with carbofuran 2 kg ai ha' gave maximum reduction of nematode population
in soil. Neem cake 0.5 per cent w/w ,carbofuran lkg ai ha+ neem cake 0.25 per cent
w/w and carbofuran 1 kg ai hal+neem cake 0.25 per cent w/w +G.fasciculatum 200
spores per pot were equally effective in reducing population of nematode in the soil.
G. fasciculatum 200 spores per pot +neem cake 0.25 per cent w/w gave maximum
reduction of nematode in root. A low gall index of 1.25 was observed in plants
treated with carbofuran @ 2 kg ai ha:' and carbofuran @ 1 kg ai hal+neem cake 0.25
per cent w/w.
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