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Study on Degeneration of Potato Seed in Terai Region of Nepal

Ghimire S*, Pandey S and Gautam S

Field experiments were conducted in the experimental field of Regional Agriculture Research Station (RARS), Parwanipur, and Bara, Nepal. The objective of study was to evaluate the rate of degeneration due to viral diseases in Cardinal and Kufri Jyoti. The experimental plot design was Randomized Complete Block Design with 3 replication and 5 treatments considering each farmer as a replication. There were 10 treatment combinations consisting 2 varieties. DAS-ELISA was done to find out the degree of virus infection. Result showed a significant (P<0.01) effect of virus in yield loss of potato. Data of three different years were compared to find out the percentage loss due to damage cause by virus. Field observation was done for other insects and pest. The DAS ELISA results revealed that during third year the presence of PVM and PVY was highest in Cardinal under and Kufri Jyoti under control treatment condition respectively. Yield data of three different year showed that there is serious loss (27–46%) on an average in the subsequent year in the productivity of potato. To decrease the rate of degeneration insect proof net can be used which is cheaper and environment friendly resulting the satisfactory yield in the subsequent generation.