Edibles and ornamentals are crops that are threatened by pests. Pests usually take the form of foraging wildlife such as aphids, caterpillars, mealybugs, scale, slugs, and snails. But flowers, fruits, herbs, and vegetables also will be threatened by pathogens, such as bacterial, fungal and viral diseases.
Insects
Pesticides.
T. J. Crowe has written: 'An annotated list of insect pests of field crops in Ethiopia' -- subject(s): Catalogs and collections, Diseases and pests, Field crops, Insect pests, Insects
They get protected from the pests which are threatening them.
Pests have been causing imense damage to crops for thousands of years
Boris Aleksandrovich Gerasimov has written: 'Pests and diseases of vegetable crops' -- subject(s): Agricultural pests, Insect pests
Hour can crops be protected against pests?
Because the pests damage the farmer's crops, causing him to lose yield and not make as much money.
Judson Ulery McGuire has written: 'Survey of insect pests and plant diseases of selected food crops in Mexico, Central America, and Panama' -- subject(s): Diseases and pests, Economic Entomology, Entomology, Economic, Food crops, Insect pests, Vegetable pathology
They eat the plants and affect their growing process, also, they make crops unable to be sold.
R. Muniappan has written: 'Survey of insect pests of crops and invasive weeds in the Republic of Palau' -- subject(s): Agricultural pests, Invasive plants, Insect pests, Weeds
The citrus crops in Belize are threatened by a pest called Citrus Psyllid. This very small pest can spread a disease called Greening which destroys citrus trees.