EI-Kadi, A. (2002). EVALUATION OF NEMATICIDAL ACTIVITY FOR CERTAIN SOIL PESTICIDES TO Meloidogyne javanica. Journal of Plant Protection and Pathology, 27(9), 6407-6416. doi: 10.21608/jppp.2002.253976
A. M.A. EI-Kadi. "EVALUATION OF NEMATICIDAL ACTIVITY FOR CERTAIN SOIL PESTICIDES TO Meloidogyne javanica". Journal of Plant Protection and Pathology, 27, 9, 2002, 6407-6416. doi: 10.21608/jppp.2002.253976
EI-Kadi, A. (2002). 'EVALUATION OF NEMATICIDAL ACTIVITY FOR CERTAIN SOIL PESTICIDES TO Meloidogyne javanica', Journal of Plant Protection and Pathology, 27(9), pp. 6407-6416. doi: 10.21608/jppp.2002.253976
EI-Kadi, A. EVALUATION OF NEMATICIDAL ACTIVITY FOR CERTAIN SOIL PESTICIDES TO Meloidogyne javanica. Journal of Plant Protection and Pathology, 2002; 27(9): 6407-6416. doi: 10.21608/jppp.2002.253976
EVALUATION OF NEMATICIDAL ACTIVITY FOR CERTAIN SOIL PESTICIDES TO Meloidogyne javanica
Central Agricultural Pesticides t.aboratory, Agricultural Research Center, Ookkl~Giza, Egypt
Abstract
The present 'Investigation was undertaken \0 ascertain the efficacy of three soil pesticides viz .. tnazophos, methomyl and carboxin-thiram against egg- masses hatching 01 Meloidogyne javanica under laboratory conditions and gall formation as result to soil drench. foliar spray and bare-root dip· treatment through using modified gall formation test.
The study revealed that under laboratory conditions. triazophos recorded high efficiency against egg-masses hatChing followed by carboxin-thiram and methomyl. The descending order of ovicIdal activity at ecSO was 0.085. 0.520 and 6.5 ppm.
There are an obvious relationship between effectiveness of tested compounds Bgainst gall formation Bnd methods of treatment with the same technique. So. mazopncs and methOmyl were more effective In case of gall formation under soil drench treatment than loliar spray treatment. Also fOliar spray treatment indicated highly efficacy of carboxln- thiram against gall {ormation as comparing with soil drench. The respective EC50 values were 13.8 and 21.4 ppm.
All tested compound showed effectiveness against root galling after different durations of bare-root dip treatment. Triazophos was most toxic compound followed by carboxin-thiram and then methomy!. The respective reduction In gall formation were between 29.8-100 %,37-73.3 % and 4~.9-6a % by trealmant with ~O~OO ppm. No significant effect was noticed !>etween tested (X)(lcsnlrations in case or t/iazophos also period of exposure was not significant With triazophos and carnoxin-thirarn.
Modified gaff formation test appear to be adequate for screening JarQe number or chemicals to detect nematicidal actl'o'lty independent of mode of action through different methods o{ treatment (soil drench, foliar spray and bare-reo! dip).
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