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Some can kill many types of protozoa, bacteria, fungi, and insects within minutes or seconds, while others may take hours or only harm the pest. In addition to acting as a “plant protector”, phytoncides can also impede the reproduction of pests.
Hydrogen peroxide and silver in solution and diluted in water is a non-toxic and low cost agent. For example, to fumigate a 1000 ft 3 (~28.32 m 3 ) area, a 20% solution (200 mL of solution in 1000 mL demineralized water) would be sprayed via fogger for 30 minutes.
"Boiling water can scald foliage or kill any plants it comes into contact with," says Vater. Spoonemore advises pouring boiling water slowly and carefully to avoid damaging nearby plants.
Ammonium sulfamate is considered to be particularly useful in controlling tough woody weeds, tree stumps and brambles.. Ammonium sulfamate has been successfully used in several major UK projects by organisations like the British Trust for Conservation Volunteers, English Heritage, the National Trust, and various railway, canal and waterways authorities.
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Insecticidal soap is used to control many plant insect pests. Soap has been used for more than 200 years as an insect control. [1] Because insecticidal soap works on direct contact with pests via the disruption of cell membranes when the insect is penetrated with fatty acids, the insect's cells leak their contents causing the insect to dehydrate and die. [2]
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Triclopyr breaks down in soil with a half-life between 30 and 90 days. It degrades rapidly in water, and remains active in decaying vegetation for about 3 months. [4] The compound is slightly toxic to ducks (LD 50 = 1698 mg/kg) and quail (LD 50 = 3000 mg/kg). [5]