<p>Considering the importance of rice blast in the Indo-Gangetic plains of India, a study was conducted to evaluate the crop loss model, on the basis of disease severity and avoidable yield loss. The results revealed that staggered spray plot (82.06%), followed by four sprays (76.96%), recorded maximum avoidable yield loss. However, maximum benefit-cost ratio was observed in plots with three sprays (5.41) of the fungicide, followed by four sprays (4.49). Additionally, a drop of 0.079 t/ha and 1.762% was observed in attainable grain yield and avoidable grain yield loss, with 1% increase in disease severity. The findings of the study, along with the crop loss model, could be helpful in scheduling an environmentally sustainable and economically feasible management strategy for reducing rice blast disease and minimising the resultant yield loss.</p>

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Quantification Crop Loss and Development of Crop Loss Model of Rice Blast in Indo-gangetic Plains of India

  • Debanjana Debnath,
  • Sunanda Chakraborty,
  • Arghya Banerjee,
  • Sunita Mahapatra

摘要

Considering the importance of rice blast in the Indo-Gangetic plains of India, a study was conducted to evaluate the crop loss model, on the basis of disease severity and avoidable yield loss. The results revealed that staggered spray plot (82.06%), followed by four sprays (76.96%), recorded maximum avoidable yield loss. However, maximum benefit-cost ratio was observed in plots with three sprays (5.41) of the fungicide, followed by four sprays (4.49). Additionally, a drop of 0.079 t/ha and 1.762% was observed in attainable grain yield and avoidable grain yield loss, with 1% increase in disease severity. The findings of the study, along with the crop loss model, could be helpful in scheduling an environmentally sustainable and economically feasible management strategy for reducing rice blast disease and minimising the resultant yield loss.