After all, such compounds are not confined to the plants in which they are found but also possibly get distributed in the environment through air and water. There are a very large number of plants which contain compounds lethal to terrestrial as well as aquatic pests at doses which are some times below those for synthetic pesticides. For a large number of plants, data from field studies is lacking. Use of such products has the additional advantage that these likely to cause contamination of the environment. While there is much information on the toxicity and lethal doses of plant pesticides, very little literature is available on their mode of action and affect on non-target organisms. The freshwater snail Lymnaea acuminata and Indoplanorbis exustus are commonly found in Northern part of India.... Most of the studies have been done in this area however suffer from one common drawback. Obviously these, substance cannot be put to commercial use without a study of these aspects as well.
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