an organic farmer relies on natural predation for controlling plant pest and diseases. Justify giving reasons why it is considered a holistic approach

Besides acting as a medium for energy transfer across trophic levels, predators are used inbiological control of plant pests. This ability of predator is based on its regulating prey population. Natural predators reduce interspecific competition and donot harm crop plants.

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It is a holistic approach,

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Organic farming is holistic approach for controlling plant pest because it seeks to develop an understanding of the interactions amongst the organisms in the ecosystem.

Organic farmers do not try to completely eradicate the pest but keep them at manageable levels. A complete eradication of the pest is not beneficial and also not desirable because many beneficial predatory and paralytic insects can not survive without them.
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