Vesicular-arbuscular mycorrhizal (VAM) fungi for the control of root-knot nematode (Meloidogyne incognita) in sweetpotato
1996
Gapasin, R.M. (Visayas State Coll. of Agriculture, Baybay 6521-A, Leyte (Philippines))
The inoculation of different concentration of VAM generally increased top weight of sweetpotato which were comparable to those treated with Nemacur ranging from 1.88-35.28 percent over the uninoculated control. Top weight however, was slightly reduced when root-knot nematode (RKN) was added to plant inoculated with VAM. The different treatments did not significantly affect root weight. As VAM concentration was increased, a corresponding increase in VAM recovered from the roots was observed. However, there was a low recovery of RKN and low number of galls produced from plants as the concentration of VAM was increased. The population density of RKN in roots and the number of galls were lowest in Nemacur-treated plants (1.60 and 10.20, respectively). However, no significant differences were observed. Percent control ranged from 72.82 - 88.64 percent with Nemacur causing the highest control but was not significantly different from VAM-treated plants
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