Effect of Residue Management Method on Incidence of Cephalosporium Stripe Under Continuous Winter Wheat Production

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Abstract
A 3-yr field experiment was conducted to compare the effect of 5 different wheat residue management practices (burn and disk, plow, disk, chop and disk and direct-drill) on the incidence of Cephalosporium stripe (Cs) disease. Wheat was continuously cropped and the same management method used each year. Three-yr averages of 70 Cs infection for the treatments were: burn and disk = 12.8, plow = 24.2, disk = 29.6, chop and disk = 36.7 and direct-drill = 46. Burning wheat stubble was the most effect disposal method for reducing Cs after a severe outbreak under a continuous winter wheat-production regime. After 3 yr of plowing, Cs incidence was the same as after 3 yr of burning; continuous plowing is expected to effectively help maintain low disease losses. Reduced tillage (direct-drill) is expected to maintain high levels of Cs under continuous cropping.