Gastropoda
Nyingine
Snails and slugs are a widespread pest that can cause serious destruction in crops if they develop in large numbers. They eat irregularly and often leave large holes in leaves but can also affect stems, flowers, tubers and bulbs. In potatoes, they can make round superficial holes in the skin or dig extensive cavities into the tubers, causing considerable damage. Silvery slime trails can be found on plant foliage and soil surface. They particularly prey on young tender plants and can actually kill young seedlings by completely eating them.
The use of pellets based on ferric phosphate is approved for organic growers. Predators such as hedgehogs, birds, frogs, toads, blindworms and ground beetles can help control when present in the fields.
Always consider an integrated approach with preventive measures together with biological treatments if available. Because of their diversity and life cycle, slugs are generally out of reach of chemical controls. Pellets based on metaldehyde can be used to lure them out of their holes. Spread them after rain, when slugs and snails are active.
Snails and slugs feed on decomposing organic matter, on leaves, roots, and tubers of a variety of crops. Slugs are underground dwellers living in cracks and tunnels made by plant stems or worms and only come to the surface to mate. These animals thrive in wet weather conditions, so the infestation occurs mainly after dewy nights or after rainfalls. Most species survive mild winters and become active again in spring.