Used of plants extrace way best for pests control in IPM. Specially, annual pests of stored produces have damage so much on storage produces as grain, also synthesis insecticides residual reported on storage agricultural produces in many countries, so this is nessecary for used of best alternative for pest of stored produces control. Searchs showed that plant essential and extraces are the best for pest control, beacuse Plant derivatives hvnt harmful effects on human and residual on stored produces.
I really support this, but especially with vegetable crops its a bit challenging to endorse the performance due to lack of quick effect (high volatality) on the targeted pests.
Our first year results with the evaluation of bio pesticides to manage pests in vegetables grown organically was not significant at different locations. Iam just waiting on this years results, and pest management has been a challenge at least with Organic farming where selection is very limited due to OMRI (Organic Material Approval Institute) approved list if you aim at Organic Certification.
That's a good idea. Objective, worth to investigate for lab studies, but not practical for organic framing for on-farm trials due to growers mindset and conceptual approach.