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Effect of nematicidal seed treatment on root-knot nematode, Meloidogyne incognita and on Rhizobial Inoculation on mungbean Mishra S. D., Gaur H. S. Division of Nematology, Indian Agricultural Research Institute, New Delhi-12. Presented at Nematology Symposium held at Coimbatore, India in February, 1981 Abstract Effect of seed treatment with four nematicides viz., aldicarb, carbofuran, dasanit and thimet at 0.25, 0.50 and 1.00 per cent a.i. (w/w) was studied in the absence and presence of artificial rhizobial inoculation on mungbean under pot conditions with soil initially infested with about 18 second stage Meloidogyne incognita juveniles per cc of soil. Aldicarb, thimet and carbofuran improved the growth of infested plants at 0.50 and 1.0% but did not reduce galling. Dasanit at all the three dosages improved plant growth and also caused reduction in galling. Dasanit at 1% was the best in reducing. root-knot infestation and improving plant growth. Rhizobial nodulation was reduced by about 75% in the presence of M. incognita. Nematicidal seed treatment also improved nqdulation but not to the level of non-infested plants. The rhizobial nodulation did not improve plant growth in the absence or presence of nematode but in the presence of nematicidal seed treatment rhizobia inoculation caused further improvement in growth. Top | |
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