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ABD EL-RAHMAN, A., EL-KAFRAWY, A., ABD EL-HAFEZ, O., ABD EL-GHANY, R. (2018). EVALUATION OF SOME FUNGICIDES EFFECTIVENESS IN CONTROL OF BLACKLEG AND COMMON SCAB OF POTATO. Egyptian Journal of Agricultural Research, 96(4), 1307-1323. doi: 10.21608/ejar.2018.142620
ASHREF F. ABD EL-RAHMAN; AHAMED A. EL-KAFRAWY; OMNIA A. ABD EL-HAFEZ; RADY EL. ABD EL-GHANY. "EVALUATION OF SOME FUNGICIDES EFFECTIVENESS IN CONTROL OF BLACKLEG AND COMMON SCAB OF POTATO". Egyptian Journal of Agricultural Research, 96, 4, 2018, 1307-1323. doi: 10.21608/ejar.2018.142620
ABD EL-RAHMAN, A., EL-KAFRAWY, A., ABD EL-HAFEZ, O., ABD EL-GHANY, R. (2018). 'EVALUATION OF SOME FUNGICIDES EFFECTIVENESS IN CONTROL OF BLACKLEG AND COMMON SCAB OF POTATO', Egyptian Journal of Agricultural Research, 96(4), pp. 1307-1323. doi: 10.21608/ejar.2018.142620
ABD EL-RAHMAN, A., EL-KAFRAWY, A., ABD EL-HAFEZ, O., ABD EL-GHANY, R. EVALUATION OF SOME FUNGICIDES EFFECTIVENESS IN CONTROL OF BLACKLEG AND COMMON SCAB OF POTATO. Egyptian Journal of Agricultural Research, 2018; 96(4): 1307-1323. doi: 10.21608/ejar.2018.142620

EVALUATION OF SOME FUNGICIDES EFFECTIVENESS IN CONTROL OF BLACKLEG AND COMMON SCAB OF POTATO

Article 4, Volume 96, Issue 4, December 2018, Page 1307-1323  XML PDF (813.67 K)
Document Type: Original Article
DOI: 10.21608/ejar.2018.142620
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Authors
ASHREF F. ABD EL-RAHMAN; AHAMED A. EL-KAFRAWY; OMNIA A. ABD EL-HAFEZ; RADY EL. ABD EL-GHANY
Plant Pathology Research Institute, Agricultural Research Center, Giza, Egypt
Abstract
antimicrobial potential of Controller, Impose, Phostrol, Ridomil Gold plus, and Roxyl Plus was determined for Pectobacterium atrosepticum and Streptomyces scabies. The cidal effect against P. atrosepticum was only shown by the fungicide Controller. S. scabies was highly affected by Controller, Impose and Roxyl Plus compared to RidomilGold plus, and Phostrol that did not inhibit the growth. The MIC of Controller was found to be 4000 ppm for P. atrosepticum and S. scabies. On the other hand, the MICs of Impose and Roxyl Plus were found to be 4000 ppm and 3000 ppm respectively for S. scabies. Application of Controller against blackleg significantly decreased the incidence of the disease in potted potato plants. Application of Controller, Impose and Roxyl Plus at 3.0g/l to control common scab significantly decreased the disease. Conclusive results were obtained by the 4.0 g/l application. Residues of ingredients of these fungicides in potato tuber 60 day after application were below the approved maximum residue level (MRL).
Keywords
Fungicides; Copper; Dimethomorph; Cymoxanil; Metiram; Phosphorus acids salts; Mefenoxam; Chemical control; Blackleg; Common scab; Potato; Residues. INTRODUCTION
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