Essay On Organic Herbicides

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Organic herbicides and weed acceptance. Effectiveness of Organic Herbicides In recent years, several organic herbicide products have appeared on the market. These include Weed Pharm (20 percent acetic acid), C‐Cide (5 percent citric acid), GreenMatch (55 percent d‐limonene), Matratec (50 percent clove oil), WeedZap (45 percent clove oil + 45 percent cinnamon oil), and GreenMatch EX (50 percent lemongrass oil), among others. These products are all contact‐type herbicides and will damage any green vegetation they contact, though they are safe as directed sprays against woody stems and trunks. These herbicides kill weeds that have emerged, but have no residual activity on those emerging subsequently. Additionally, these herbicides can burn back the…show more content…
Vinegar is a non- selective contact herbicide. In general, weed control increase as acetic acid content and application volume increase for example 20, 40, 80 and 100 gpa. Typically, vinegar is less effective in controlling grasses than broadleaf weeds and more effective on annual species than perennials. In addition to application volumes and concentration, weed control is also dependent on the weed size and the species. Repeated application of acetic acid may be necessary for satisfactory weed control. c. Ammonium Nonanoate Ammonium nonanoate or ammonium pelargonate is another non-selective contact post emergent herbicide that has shown excellent weed control activity and has just recently received clearance as an organic herbicide. Ammonium nonanoate occurs in nature and is formed from the bio degradation of higher fatty acids. Ammonium nonanoate is more effective on broadleaf weeds than grasses, and smaller/ younger weeds than larger or more mature weeds. Ammonium nonanoates can be effective at more application volume than acetic acid products. 2. Homemade herbicides a. Drench with boiling dihydrogen

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