Poultry 20 lbs. Sheep 18 lbs. Be sure manure sources are well composted to maximize weed seed kill and residual disease carryover. Organic Insect Control Rotations are the first and best way to preventi insect problems. The next best option is hand removal of old plant residue if working in a small garden.
Organic growers tend to use organic insecticides as a last resort.
Check with your certifier to see if they are acceptable. Sabadilla is certified acceptable under OCIA as a restricted use organic product, which means it is to be used only if no other alternatives are feasible. Read and follow label directions. Hand picking is also an alternative. Bt should be applied when first instar larvae are present in the field.