Now we have the following classes of fungicides: Inorganic Organic Sulfur Copper Salts Dithiocarbamates Thiazoles Triazines Substituted aromatics Dicarboximides Dinitrophenols Quinones Antibiotics Organotins Aliphatic nitrogens Benzimidazoles Sterol Inhibitors Strobilurins The search for new fungicides goes on, with hundreds of synthetic organic compounds being screened each year.
You some- 12 Garden Chemicals and Their Application times got plant injury you did not always get the best possible control, but at least you did not have to be an organic chemist. Not so long ago the chemicals on the garden medicine shelf consisted of copper and sulfur for protectants, lime sulfur as an eradicant, mercuric chloride as a disinfectant, and formalin and carbon bisulfide a fumigants. Most nematicides are fumigants, chemical toxicants that act in volatile form. A nematicide is, of course, a chemical that kills nematodes in the soil or in the plant. In common usage, however, they are called disinfectants. Chemicals for seed treatment can be either eradicants or protectants, but most of them are disinfestants, in that they kill organisms on the surface of the seed rather than those within. A disinfectant kills or inactivates organisms present on the surface of the plant or plant part or in the immediate environment. A disinfectant is an agent that frees a plant or plant part from infection by destroying the pathogen established within it.
An insecticide is an agent used to kill insects. A pesticide is any chemical that is used to kill pests, especially insects and rodents. There are few virocides, which are toxic or poisonous to viruses. They also have value against certain fungi. Among the more recent bactericides are antibiotics, products of other living organisms.
A bactericide is a substance that destroys or inhibits bacteria and nematicide for nematodes. It may be an eradicant, applied to a plant, plant part, or the environment as a curative treatment to destroy fungi established within a given area or plant or preferably it may be a protectant, applied to protect a plant or plant part from infection by killing, or inhibiting the development of, fungal spores of mycelium that may arrive at the infection court. Pages 43-79 Citation previewĬhapter 1 Garden Chemicals and Their Application A fungicide is a substance that destroys or inhibits the growth of fungi. Table of contents : Front Matter.Pages I-9 Back Matter.Pages 11-41.
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