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TESTING OF FUNGICIDES FOR THE CONTROL OF LOOSE SMUT OF WHEAT
Abstract
Loose smut of wheat caused by Ustilago tritici (Pers.) Rostr., is one of the major diseases of wheat in wheat growing countries of the world. Upto 7 % losses in wheat variety Kalyansona have been recorded in India (Joshi et al., 1973) whereas, an incidence of 1-2% has been reported in Pakistan (Kamal & Moghal, 1968; Hafiz, 1986; Khan et al., 1992). In 1981-82, the severity of loose smut in "some fields of Pakistan reached upto 15% (Khanzada & Aslam, 1982). Bhutta & Ahmed (1991) recorded upto 0.2 % infection of loose smut in some areas of Punjab and suggested treatment of seed lots for the production of disease-free certified seeds. Seed dressing with fenufuran (Panoram) and tridimenol (Baytan) @ 2 to 4 g/kg seed provided complete control of loose smut of wheat while carboxin (Vitavax) did not show consistent results (Khanzada & Mathur, 1983). The present report describes the comparative efficacy of 3 systemic fungicides used at different dosage for the control of loose smut of wheat.
