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Economic decision level of pest management
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Master Principles and Practices of Insect Pest Management – Notes, Case Studies & Practical Insights – with Rahul

Based on biological characteristics

i. r-pest: They possess a high rate of potential increase, strong dispersal and host finding ability. They include major pest such as locust and aphid.

ii. k-pest: They possess a low rate of potential increase, grater interspecific competitive capability, more specialized food habit and bigger size. They seldom become an economic pest due to human intervention, climatic pattern change.

iii. r-k pest: They possess a various mixture of characteristics of r and k pest. E.g. Nila parvataon rice.

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