PJB-2022-414
MANAGEMENT OF EYESPOT DISEASE OF SUGARCANE THROUGH HOST RESISTANCE, CHEMICALS, AND PLANT DEFENSE ACTIVATORS
Muhammad Atiq
Abstract
Sugarcane (Saccharum officinarum) is the annual crop which belongs to family Poaceae and its fifth most important crop of Pakistan. Sugarcane production is affected by various biotic and abiotic factors. Among biotic factors eye spot disease caused by Bipolaris saccharum has become a major threat to sugarcane. The disease sample of sugarcane were collected from area of Lalian, Chiniot and Faisalabad. The pathogen was isolated from the infected leaves of sugarcane crop. In this present study management of eye spot disease was done with the help of resistance varieties, chemicals, and plant activators. In screening experiment, ten varieties of sugarcane were evaluated in which CPF-246 showed highly resistant, CPF-247 and CPF-77400 showed resistant response. The poisoned food technique was applied to evaluate the fungicides at different concentrations (50, 100, and 150ppm%) under In-vitro conditions. The maximum growth inhibition was expressed by Tilt (Propiconazole) (4.645mm) under In-vitro condition. Plant activators were evaluated at different concentrations (0.25, 0.5, and 0.75%.) under greenhouse conditions. The minimum disease incidence was expressed by Salicylic acid (9.064%) under greenhouse conditions. Most effective plant activator and chemical was evaluated alone and in combination at different concentrations (1, 1.5, and 2%) under field conditions. The minimum disease incidence was expressed by Salicylic acid + tilt expressed (12.395%) under field conditions.
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