Study The Effect of High Doses of Some Seed-dressing Fungicides on Delaying The Infection by Chickpea Ascochyta Blight

This field study was carried out at EL- Gab Research Center during furing 2000-2001. Six fungicides namely, Benomyl 50%, Difenoconazole, Diniconazole, Fludioxonile, Triticonazole and Thiram 37.5% + Carboxin 37.5% with high doses×1, ×2, ×4, ×8 were used as seed dressings on chickpea cultivar Gab3 to study their effects on Ascochyta blight infection. The results showed that fungicides eradicated the infection from the seeds and protected the seedlings from infection. There was a clear effect on delaying the infection by ascochyta blight on chickpea for about 10-15 days in comparison with the untreated control. However, Higher doses of some fungicides negatively affected the yield.