Omran Youssef(1), Helim Youssef(1), Alan Ramo(1), Mahmoud Hasan(1), Sultan Shekhmous(1), Afrem Issa(1), Nawzad Suleman(1)& Abdul-Ruhman Issa(1)
(1). Al-Qamishli Agricultural Research Center, Al-Qamishli, Syria.
(Corresponding author: Dr. Omran Yousef: Al-Qamishli Agricultural Research Center, Al-Qamishli, Syria. E-mail: om_youssef@yahoo.com).
Received: 14 / 07 / 2014 Accepted: 25 / 10 / 2014
Abstract:
Results of efficacy test of nine fungicides from different chemical groups in controlling yellow rust caused by Puccinia striiformisf.sp. tritici on bread wheat Cham8 in 2011 in north-eastern Syria showed disease stop with 100% efficacy of Folicure (1 l/ha) after fifth day from spray and lasted for 20 days, Nativo with 94.64% efficacy, Marlo 88.23% and Folicure (0.5 l/ha) 86.51%, then followed by Bayfidan (84.79%) and Ortiva (80.79%), while the efficacy of all other fungicides was less than 70%. The tested fungicides did not show any clear toxicity on wheat except Foliogold which recorded neil toxicity, also Score, Marlo and Bayfidan but with lesser degree. Results did not show significant difference in spike length with different fungicides compared with the control. Results showed increase in number of grains per spike and thousand grains weight (TGW) for all tested fungicide compared with the control. Increase in yield was recorded with all fungicides compared with control except Foliogold and Sodium hydrogen carbonate 5%. The higher increase in yield was recorded with Folicure at two concentrations 1, 0.5 l/ha.
Key words: Chemical control, Fungicides, Syria, Wheat, Yellow Rust.
Full paper in Arabic::تأثير المعاملات الكيميائية ضد الصدأ الأصفر على إصابة القمح وإنتاجه