Influence of date of sowing on incidence of dry root rot and wilt diseases of chick pea.

摘要

The variation in date of sowing was tested as an effective and economic strategy against dry root rot (caused by Rhizoctonia bataticola [Macrophomina phaseolina]) and wilt (Fusarium oxysporum f.sp. ciceris) diseases of chickpea, along with optimum yield, in Kanpur, Uttar Pradesh, India, during the rabi season of 2000/01-2002/03. Three cultivars of chickpea, namely T₃, Avrodhi and K-850, were sown in four different dates at 15 days interval, starting from 15th October. The early sown cultivars were significantly less affected by dry root, followed by the third date of sowing in all the years. K-850 showed significant reduction in disease incidence (14.69, 15.89, 15.18 and 16.98%, respectively, during the 1st, 2nd, 3rd and 4th sowing) compared to the other two cultivars. The maximum wilt incidence was recorded in late sown T-3 and K-850 (16.7 and 15.8%, respectively), whereas in Avoridhi during the 3rd date of sowing with 9.8% disease incidence. The early date of sowing showed low disease incidence compared to other sowing dates in all the cultivars. The highest yield of 16.60, 17.09 and 18.19 q/ha was obtained from early sown T-3, Avrodhi and K-850, respectively.