Yesterday Dr. M.P. Singh gave a lecture on the many pesticidal and fertilizing properties present in the diversity here at Navdanya.
There are four types of ailments crops face: insects, fungus, bacteria, and viruses. All of these can be treated with bio products rather than chemical products.
I wish I knew about the aphid-combating properties of basil before the aphids melted the kale plants, but it may not be too late to try it out…