Economic Impact and Management of Plant Viral Disease: Review

Plant viral diseases in food crops pose a serious constraint to the productivity and profitability of a wide range of crops that affecting food production globally and cause enormous economic losses. Plant virus infections are emerging from time to time as major concerns in improving agricultural productivity. Rapidly-expanding global climatic change creates favorable conditions for development and increased spread of plant virus diseases due to direct or indirect impacts on population dynamics of virus-transmitting insect vectors. Plant virus disease management is the selection and use of appropriate technologies and practices to suppress disease to a tolerable level. Plant virus diseases are basically difficult to manage directly by use of chemical pesticides; however, integrated management methods which include cultural practices such as removal of infection sources, field sanitation, removal of alternative hosts, use of healthy seed (virus free seeds); chemical pesticides to control insect vectors indirectly through seed treatment and foliar spray are the most possible management measures of plant viral diseases. Keywords: Avoidance; Host resistance; Plant virus; Prevention DOI: 10.7176/JESD/13-5-01 Publication date:March 31st 202