Abstract

Rice tungro disease (RTD) is one of the most economically important virus diseases of rice in South and Southeast Asia causing severe losses in yield. RTD results from an infection by two distinct viruses: Rice tungro bacilliform virus (RTBV) and Rice tungro spherical virus (RTSV), which are transmitted by leafhopper species. The primary and secondary spread of RTD are based on the dynamics of the insect vector and virus interaction in relation to the host plants, crop management practices, and environmental factors. Area-wide and farm-level RTD management strategies are analyzed based on epidemiology and tungro resistance.

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