Ahmed Amer Ali Mahmoud*(1) Mahmoud Rezk-Allah Asran(2) Elhamy Mohammed Moustafa Al-Asuity(1) and Moustafa Hemdan Ahmed Moharam(2)
(1). Plant pathology institute, Agriculture research center (ARC), Giza, Egypt.
(2). Department of plant pathology, Faculty of Agriculture, Sohag University. Sohag, Egypt.
(*Corresponding author: Dr. Ahmed Amer Ali Mahmoud. E-Mail: Ahmed3aam@yahoo.com).
Received: 16/09/2018 Accepted: 30/07/2018
Abstract
Sorghum plant (Sorghum bicolor (L). Moench) is an important grains crop for human being and animals in Upper Egypt, grain sorghum is attacked by certain smut diseases causing considerable losses in the grain yield. Covered kernel smut (CKS) and long smut (LS) diseases are one of the most significant diseases in sorghum production especially where untreated seed is planted. Sorghum cultivars Giza-15 and Dorado differed in their ability to infection with these two types of CKS and LS respectively. High rates of Sporisorium sorghi and Sporisorium ehrenbergii teliospores playing great factor to increasing the two smuts diseases infection and yield losses, while it was reduced the yield of grain for the tested cultivars. The tested fungicides and sulfur decreased the percentages of infection of CKS and LS diseases and increased grain yield in both seasons 2014 and 2015 compared with the control. Vitavax fungicide was the most effective one followed by sulfur and Bavastin.
Key words: Grain sorghum, Smuts, Fungicide, Yield losses.
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