Systemic pesticides workby being absorbed into the living tissues of the host. When the host is attacked by a pest, that pest ingests the pesticide along with the host material, causing death. There are trade offs involved with using systemics:
People also ask
How are systemic insecticides used to kill insects?
Typically, these chemicals are applied to soil and taken up through plants鈥?roots; less commonly, they are applied to foliage or injected into tree trunks. Systemic insecticides are specifically those that target insects. Some of the most commonly used systemic insecticides are neonicotinoids.
Why systemic pesticides?
These insects do take in lots of plant sap during feeding, however, so a pesticide in the sap can be easily ingested by the pest. When systemic pesticides are applied to the soil, beneficial insects, birds and even pets and people are much less likely to encounter the pesticide in the form of residues or spray drift.
How are systemic insecticides transported in plants?
Movement of systemic insecticides, like all transportable chemicals in the plant, takes place principally in the plant鈥檚 vascular system, which includes the phloem and xylem. Not all chemical compounds are soluble in water.
How do pesticides kill the target pest?
Pesticides are often applied by spraying, fumigating and baiting. However, not all pesticides kill the target pest. Some act in other ways, for example boost the action of another pesticide, for example, piperonyl butoxide adds to the effectiveness of pyrethrum in some insecticides. 鈥楥ontact’ pesticides are absorbed through the pest鈥檚 body surface.