This practice also helps reduce the risk of pests developing resistance to pesticides. Many of the insects commonly seen in a tomato crop do not damage the tomatoes. It lays no eggs in tomato crops. Some species such as ladybirds are useful predators while aphids and thrips damage the crop indirectly by bringing viruses. It also provides information about the biology of key pests and diseases, how best to manage them and preventing pesticide resistance.
Colour photographs feature to help growers accurately identify pests and disease symptoms.
The A4 manuals are bound in a loose-leaf ring binder and are arranged in sections that can be individually replaced when updated.