(5)Improvement of the environment Farm chemicals are used rationally lest the agricultural environment should be contaminated by industrial pollutants. Predatory exploitation of resources is avoided with a view to ensuring the quality of the sustainable agricultural environment.• Farm chemicals are used rationally lest the agricultural environment should be contaminated by industrial pollutants. Predatory exploitation of resources is avoided with a view to ensuring the quality of the sustainable agricultural environment. (5) Improvement of the environment