Substantiate by giving two reasons as to why a holistic understanding of the flora and fauna the cropland is required before introducing an appropriate biocontrol method.

Substantiate by giving two reasons as to why a holistic understanding of the flora and fauna the cropland is required before introducing an appropriate biocontrol method.

Answer.

Eradication of pests will disrupt predator-prey relationships, where
beneficial predatory and parasitic insects which depend upon flora and fauna as food or hosts, may not be able to survive. Holistic approach ensures that various life forms that inhabit the field,
their life cycles, patterns of feeding and the habitats that they prefer
are extensively studied and considered.