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ALKOLALY, A., EL-NAHAS, S., ABDEL-RAHMAN, T. (2017). RESIDUAL EFFECT OF CERTAIN COPPER FUNGICIDES USED IN CONTROLLING DOWNY MILDEW OF LETTUCE. Egyptian Journal of Agricultural Research, 95(1), 65-71. doi: 10.21608/ejar.2017.146265
ASMAA M. ALKOLALY; SHEREEN. E. EL-NAHAS; TAREK ABD. ABDEL-RAHMAN. "RESIDUAL EFFECT OF CERTAIN COPPER FUNGICIDES USED IN CONTROLLING DOWNY MILDEW OF LETTUCE". Egyptian Journal of Agricultural Research, 95, 1, 2017, 65-71. doi: 10.21608/ejar.2017.146265
ALKOLALY, A., EL-NAHAS, S., ABDEL-RAHMAN, T. (2017). 'RESIDUAL EFFECT OF CERTAIN COPPER FUNGICIDES USED IN CONTROLLING DOWNY MILDEW OF LETTUCE', Egyptian Journal of Agricultural Research, 95(1), pp. 65-71. doi: 10.21608/ejar.2017.146265
ALKOLALY, A., EL-NAHAS, S., ABDEL-RAHMAN, T. RESIDUAL EFFECT OF CERTAIN COPPER FUNGICIDES USED IN CONTROLLING DOWNY MILDEW OF LETTUCE. Egyptian Journal of Agricultural Research, 2017; 95(1): 65-71. doi: 10.21608/ejar.2017.146265

RESIDUAL EFFECT OF CERTAIN COPPER FUNGICIDES USED IN CONTROLLING DOWNY MILDEW OF LETTUCE

Article 4, Volume 95, Issue 1, March 2017, Page 65-71  XML PDF (438.58 K)
Document Type: Original Article
DOI: 10.21608/ejar.2017.146265
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Authors
ASMAA M. ALKOLALY1; SHEREEN. E. EL-NAHAS1; TAREK ABD. ABDEL-RAHMAN2
1Plant Pathology Research Institute, ARC, Giza, Egypt
2Central Agricultural Pesticides Laboratory, ARC, Dokki, Giza, Egypt.
Abstract
the fungicidal residues of certain copper fungicides, i.e. copper oxychloride, copper hydroxide and copper salts of fatty and rosin acids used against downy mildew in lettuce were studied. Data showed the occurrence of Cu residues in the plant, at different values according to the forms and rates used. Copper compounds residues were digested from lettuce plants samples then the residues were determined by microwave plasma atomic emission spectrometry. Results indicated that the pre-harvest interval (PHI) for lettuce plants were 1, 3 and 4 days for copper salts, copper hydroxide and copper oxychloride, respectively.
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