rice brown spot and susceptibility of some cultivars in north of iran.rice brown spot is one of the important diseases in the world including iran. 91 samples of the infected plants such as leaves and panicles were collected from different locations of guilan province, north of iran and the fungi isolated and studied for pathogenicity. three species of bipolaris (b. oryzae, bipolaris sp. and b. cf. victoriae) were isolated more than other species with serious effects on the plants respectively. reactions of 8 cultivars of rice, neda, nemat, sepeed-rood, bejar, kha ...200212701419
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