THE INFLUENCE OF CERTAIN INSECTICIDES ON THE EFFICACY OF SOME FUNGICIDES AGAINST BLACK ROT DISEASE ON COTTON | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 3, Volume 78, Issue 3, September 2000, Page 1015-1023 PDF (2.46 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2000.322635 | ||||
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| Authors | ||||
| NORELDIN A. EL-SAFTY; NAHED M. MORSY; FATMA M. GHALLAB | ||||
| Department of Fungicides, Bactericides and Nematicides, Central Agricultural Pesticides Laboratory, Agricultural Research Centre, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| Alternaria spp., Fuser/um spp. and Helminthospodum spp. were found to be the essential fungi causing black rot on cotton plant. Under laboratory conditions, it had been found that Alternaria spp. had high tolerance to fungicides namely propineb, cuproxate, mancozeb, metalaxyl-mancozeb and s-harts more than the other two fungi. Alternaria spp., was chosen as an experimental fungus. The effects of metalaxylmancozeb and propineb on the fungus were the best, followed by mancozeb and s-haris, while cuproxate failed to inhihbite the spore germination at the field recommended rate (FRR). Insecticides: cyfluthrin. prolenolos, cypermethrin, deltamethrin, methomyl-dimilin, chlorpyrifos, tiodicarb, fenpropathrin and fenvalerate. had no/or neglected effect on the fungus Alternaria spp. on the basis of LC50 values. Mixing these insecticides with the above fungicides gave best results in case of mancozeb, s.haris and metalaxyl-mancozeb, respectively, while in case of propineb the effeciency was reduced. | ||||
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