Journal mondial de la biologie, de l'agriculture et des sciences de la santé

Abstrait

Response of Rice Varieties to Brown Spot Disease of Rice at Paklihawa, Rupandehi

L. Aryal, G. Bhattarai, A. Subedi, M. Subedi, B. Subedi2 & G.K. Sah

Brown Spot is the emerging disease of Rice in marginal and low fertility areas which causes significant yield loss. An experiment was conducted at Agronomy Farm of the Institute of Agriculture and Animal Science (IAAS), Paklihawa, Rupandehi in a randomized complete block design with three replications. Poonam variety showed maximum disease severity which is 51.47% and minimum was seen in Kabeli (24.94 %). Maximum mean AUDPC (657.3) on leaf was recorded in Poonam while minimum mean AUDPC (324) was recorded in Radha-4. Highest yield was recorded in Radha-4 (5.420 ton/ha) and lowest yield was recorded in varieties Mithila (2.34 ton/ha). Similarly, highest test weight was recorded in variety Radha-4 (18.18gm) and lowest was recorded in Sabha Mansuli (9.397gm). Variety Radha-4 could be used as a source of resistant varieties in breeding program and Poonam can be regarded as a tolerant variety of rice towards brown spot disease.