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Pathogenicity and management of root knot nematode (Meloidogyne incognita) infecting chilli

KrishiKosh

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Title Pathogenicity and management of root knot nematode (Meloidogyne incognita) infecting chilli
 
Creator Das, Priyadarshini
 
Contributor Mahapatra, S.N
 
Subject Chilli, Emamectin Benzoate , Meloidogyne incognita
 
Description Experiment was conducted to find the initial damaging inoculums level of Meloidogyne incognita on chilli (cv. BC-25). Fifteen day old seedlings, in earthen pots each filled with 1kg steam sterilized soil, were inoculated with 10, 100, 1000 and 10,000 second stage juveniles (J2) of M. incognita. Observations were recorded on plant growth characters and nematode multiplication at 60 days after inoculation. Maximum reduction in plant growth parameters was observed at10,000 J2/pot. However, the threshold inoculums density causing significant reduction of various growth parameters was 1000 nematodes per seedlings.

Efficacy of missile (Emamectin Benzoate 5%SG) as seedling root dip was determined for the management of Meloidogyne incognita infecting chilli. Roots of one month old chilli seedlings were carefully submerged separately in different concentrations of missile (0.02 - 0.1%) for one hour and then planted in 15 cm diameter earthen pots each containing 1 Kg autoclaved soil. Each seedling was inoculated with 1000 freshly hatched second stage juveniles (J2) of Meloidogyne incognita. Seedling root dip in missile 0.1% for 1 hour significantly increased shoot length (36.4%), fresh shoot weight (43.0%), dry shoot weight (22.7%), root length (31.4%), fresh root weight (41.1%), and dry root weight (21.8%). Significant reduction in number of galls and egg masses/plant (78.4 & 79.3%) as well as final nematode population (69.8%) was also recorded by this treatment (missile 0.1%). The treatment was on par with marshal (carbosulfan 25%EC) @ 0.2% as seedling root dip.
 
Date 2017-01-04T11:54:40Z
2017-01-04T11:54:40Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/94358
 
Language en
 
Relation Th;
 
Format application/pdf