It depends on the pest involved. The one's that cause the most serious damage are gophers which will eat the roots out from under it or snails/slugs which can cause major leaf damage. There are beneficial critters out the too. See here for more-
http://www.docstoc.com/docs/17124222/GARDEN-PESTS
One chemical component in radish that can kill pests is glucosinolates. When radish tissues are damaged, glucosinolates are released and converted into isothiocyanates, which have toxic effects on pests. These compounds act as natural insecticides that can deter or kill pests that may attack radish plants.
Plants do have defense mechanism to protect them from insect pests and diseases.
the chemicals that eliminates plants are called herbicides, and pesticides eliminate pests
George Victor Johnson has written: 'Insects and related pests of house plants' -- subject(s): Control, Diseases and pests, House plants, Pests
Plants produce sugar in the sap, nectar and fruits that attract insects, birds, etc. needed to pollinate and protect the plants. We are the ones who consider the pollinators pests.
Marigold flowers do not have any pests. They are actually planted with other plants to keep pests away. ( and yes, this is correct )
Generally insect pests attack the plants in three ways: (1) They cut the root, stem and leaf, (2) they suck the cell sap from various parts of the plant and (3) they bore into stem and fruits. They thus affect the health of the crop and reduce yields
Yes, plants can kill plants in one day.
Insect Pests are serious pests of plants which attack them in all stages and parts. based on the mode of attack, the insect pests can be classified into three types.Chewing Insects,Sucking Insects,Borer Insects.Chewing Insects:They cut and chew the root, stem and leaves of the plants.Eg. Grasshoppers, Caterpillars, etc.Sucking Insects:They suck the cell sap from the different parts of the plants.Eg. Leaf hoppers, Aphids, etc.Borer Insects:They bore and enter different parts and feed on the plants.Eg. Sugarcane borer, etc.
yes they eat plants.
Weeds are plants that are pests. Weeds may be defined as plants whose value is denigrated, forgotten or unknown even though property occupants often define as weeds any plants that are not behaving or located as desired. Plants which are deemed inappropriate in behavior or location tend to be perceived as pests for aggressive, invasive, overly competitive growth patterns.
the biggest is whitfly (bemisia tabbaci) but there are many more