Efficacy of some Fungicides against Early Blight with Special Reference to their Residues in Tomato Fruits
Abdel Rahman, T., Ashour, A., Badawy, H., Dib, N. (2013). Efficacy of some Fungicides against Early Blight with Special Reference to their Residues in Tomato Fruits. EKB Journal Management System, 41(2), 159-172. doi: 10.21608/ejp.2013.100355
Tomader Abdel Rahman; Ahmed Ashour; Hany Badawy; Nsreen Dib. "Efficacy of some Fungicides against Early Blight with Special Reference to their Residues in Tomato Fruits". EKB Journal Management System, 41, 2, 2013, 159-172. doi: 10.21608/ejp.2013.100355
Abdel Rahman, T., Ashour, A., Badawy, H., Dib, N. (2013). 'Efficacy of some Fungicides against Early Blight with Special Reference to their Residues in Tomato Fruits', EKB Journal Management System, 41(2), pp. 159-172. doi: 10.21608/ejp.2013.100355
Abdel Rahman, T., Ashour, A., Badawy, H., Dib, N. Efficacy of some Fungicides against Early Blight with Special Reference to their Residues in Tomato Fruits. EKB Journal Management System, 2013; 41(2): 159-172. doi: 10.21608/ejp.2013.100355

Efficacy of some Fungicides against Early Blight with Special Reference to their Residues in Tomato Fruits

Egyptian Journal of Phytopathology
Article 13, Volume 41, Issue 2 - Serial Number 41, December 2013, Page 159-172  XML PDF (152.73 K)
Document Type: Original Article
DOI: 10.21608/ejp.2013.100355
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Authors
Tomader Abdel Rahman* 1; Ahmed Ashour2; Hany Badawy3; Nsreen Dib4
1Plant Pathol. Res. Inst., ARC, Giza, Egypt
2Plant Pathol. Dept., Fac. Agric., Cairo Univ.
3Economic Entomol. & Pest. Dept., Fac. Agric., Cairo Univ.
4Ministry of Higher Education, Syrian Arab Republic
Abstract
Early blight disease caused by Alternaria solani (Ellis and Martin) Jones and Grout, attacks all grown tomato hybrids and varieties either under open field or in plastic house conditions resulting in a serious reduction in fruit yield. Under field trials the tested fungicides were arranged according to their efficacy as Ridomil Gold MZ, Oxy plus, Dolphin Alfa, Shirlan, Flint, Leimay, Ranman and Revus, in descending order. The extracted treated fruits gave the highest recovery percentage of fluazinam and trifloxystrobin. The initial deposits of fluazinam and trifloxystrobin in fruits were 0.236 and 0.179 ppm and their half-life values (RL50) were 5.01 and 3.73 days after treatment, respectively. The results show that the detected
residues of fluazinam and trifloxystrobin in tomato fruits after spraying directly were below the maximum residue limit. Accordingly, tomato fruits could be used safely for human consumption after one day of spraying with both fungicides.
Keywords
Early blight; fluazinam; fungicide residues; HPLC; tomato and trifloxystrobin
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