Evaluation of Fungicides and Bioagents against Pyricularia grisea in vitro

Abstract

Abstract

Blast disease, a standout amongst the most pulverizing infections of rice in most rice delivering regions of the world is caused by Pyricularia grisea [1]. In Nepal, the infection causes 10–20% yield diminishment in vulnerable assortments, however in extreme case; it goes up to 80% [2]. Chemicals are ordinarily connected for controlling rice impact sickness [3], yet when chemicals are utilized aimlessly, they likewise represent a genuine risk to the earth. A trial was directed to check mycelial development of P. grisea with hexaconazole, tricyclazole, kasugamycin, carbendazim and neem seed, removed by harmed nourishment system at 50 and 100 ppm, and Trichoderma viridae by double culture strategy, in-vitro amid August–October 2014 in laboratory of plant pathology division, Khumaltar. Colony diameter of pathogen and antagonist was measured in centimeter at 96, 120, 144, 168, 192 and 216 h incubation period and mean computed. Growth reduction of the pathogen by the fungicides and antagonist was calculated [6]. Tricyclazole appeared better to control growth of P. grisea than all other chemicals at both concentrations. However, T. viridae appeared quite comparable to tricyclazole. So, T. viridae and tricyclazole should be tested in field to verify the results and to control the blast of rice. Thus, using minimum dose of appropriate fungicide or bio-agents alternative to fungicide, help in reducing health hazard by minimizing adverse impact on environment.

Keywords: Pyricularia grisea, hexaconazole, tricyclazole, kasugamycin, carbendazim, neem seed and Trichoderma viridae, mycelia

Cite this Article

Prakash Ghimire, Gopal KC, Shrestha Sundar M. et. al. Evaluation of Fungicides and Bioagents against Pyricularia grisea in vitro. Research & Reviews: Journal of Crop Science and Technology. 2017; 6(1): 33–36p.

Keywords: Pyricularia grisea, hexaconazole, tricyclazole, kasugamycin, carbendazim, neem seed and Trichoderma viridae, mycelia