IN VITRO AND IN VIVO EVALUATION OF SILICON IN THE MANAGEMENT OF ROOT-KNOT NEMATODE, Meloidogyne incognita (KOFOID & WHITE), CHITWOOD, ON TOMATO
Loading...
Files
Date
2017-08-03
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
Root-knot nematode (Meloidogyne incognita) is a serious threat to tomato
cultivation. Two silicon sources viz., Diatomite and Rice hull biochar were tested for their
efficacy at different doses and two methods of application on egg hatching and juvenile
mortality of M. incognita under in vitro and in vivo. Maximum egg hatching inhibition
was observed in Diatomite (Filtered method) followed by Rice hull biochar (Filtered
method) amounting to 90.22 & 89.57 per cent at 1.0 per cent concentration exposed for
120 hours. Diatomite (Filtered method) and Rice hull biochar (Filtered method) recorded
100 & 91.84 per cent mortality of J2 of at 72 hours after treatment. Minimum number of
galls per root system, number of egg masses per root system and number of eggs per egg
masses were recorded by Diatomite @ 2.5 g/kg of soil (63.25, 39.75 and 103.25).
Maximum plant height, fresh, dry shoot, root weight and length was observed in plants
treated with Diatomite @ 2.5 g/kg of soil was observed under greenhouse condition.
Under field condition, Diatomite @ 12.5 g/m2 were effective against nematode with
significant reduction in number of galls, egg masses per root system (66.50 and 36.75),
(71.75 and 44.50) and number eggs per egg mass (98.00), (110.00). Diatomite at 12.5
g/m2 was found to increase the plant growth parameters viz., plant height, fresh, dry
shoot, root length and fresh, dry root weight and yield.
Description
Keywords
null