Nursery crops for biological control
Nursery crops refer to crops that are grown to provide shelter and nutrition to insects that consume pests that destroy crops needed by human beings.
The concept involves planting the nursery crop plants in among the crop that suffers from pest insect infestations. The beneficial insects will be attracted to the nursery crop plants, from where they can predate upon the insects infesting the other crop.
When investigating nursery crops relevant to your area and needs, consider the potential for the nursery crop to provide nectar and other nutrition during the times when the pest insects are not around or are in low numbers.