Soil supplementation with Si, B and Zn and their synergetic effects in reducing severity of wheat blast (Magnaporthe oryzae Triticum)

Wheat blast (Magnaporthe oryzae Triticum) in Bangladesh and South America is recognized as one major limiting factor of wheat production. Its control using chemical pesticides raises concerns about food safety pesticide resistance, which have dictated the need for alternative management approach, nutrient supplementation could be an ecofriendly alternative. Experiments were carried out under confined net house condition two consecutive cropping seasons. Single doses nutrients (Si, B Zn) incorporated during soil preparation. Plants susceptible variety BARI Gom-26 inoculated with spores (1 x 107 ml-1) Magnaporthe Triticum at vulnerable pre-heading stage 52 days age. Typical symptoms spike bleaching from top to downward appeared on sight 14 after inoculation i.e., 66 age crop. Incidence severity scored four times starting 68 @ three day’s interval. None stop incidence wheat; however, some reduced significantly. Solo application Si, Zn or combination caused significant reduction bleaching. With mixed Zn, > 47% was obtained. The results revealed that silicon, zinc boron had a synergistic effect intensity disease wheat. Int. J. Agril. Res. Innov. Tech. 11(2): 76-84, Dec 2021