Efficacy of oxamyl against Heterodera schachtii on cabbage
Potter, J.W.; Marks, C.F.
Journal of Nematology 8(1): 38-42
1976
ISSN/ISBN: 0022-300X PMID: 19308194 Document Number: 102588
The efficacy of oxamyl in a soil drench (6.7 kg a.i./ha) and/or foliar spray(s) (0.04 kg a.i./100 litre water) against Heterodera schachtii on cabbage (Brassica oleracea var. capitata) seedlings was tested in pot experiments. A drench before transplanting provided some control while a single foliar spray one week before transplanting apparently prevented penetration of H. schachtii larvae. Post-transplant sprays were relatively ineffective. The most effective control was achieved by a pretransplant or transplant drench combined with a foliar spray 2 weeks after transplanting. The effectiveness of this treatment is believed to be probably due to the spray augmenting the action of the drench in inhibiting larval development after penetration. The efficacy of oxamyl in controlling H. schachtii on cabbage was determined by applying various combinations of soil drenches at 6.7 kg/ha and foliar sprays at 0.04 kg/100 litres of water to cabbage seedlings. Pretransplant drenches provided some control of H. schachtii over a 13-week period. A single foliar spray of oxamyl 1 week before transplanting apparently prevented penetration of H. schachtii larvae; post-transplant sprays were relatively ineffective. A pretransplant or transplant drench combined with a foliar application 2 weeks after transplanting provided the most effective control.