When Is a Rice Insect a Pest: Yield Loss and the Green Revolution

摘要: As land area to expand rice production is limited most increases in crop Asia must come from increasing yields on farms already under production. Insect pests are among the important biological constraints limiting yield potential of modern rices but extent damage depends how vigorous growing as well number biotic and abiotic stresses affecting that season. Yield loss data useful for farmers, extension workers, researchers, policy makers. A methods estimate losses available more than one should be used. accurate assessments expensive obtain a nation regular basis, estimates only areas countries. pest resistance exists epidemic not chronic pests, insect group causes greater every year. Modern high tillering have capacity traditional compensation enhanced by agronomic practices thus integrated management thought within context management. For making better control decisions farmers need assess compensatory status severity stress acting it. Due capacity, correct all can combat easiest or least let compensate rest. lf nations get handle losses, will involved gathering.