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4-Hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors (HPPD inhibitors) are a class of herbicides that prevent growth in plants by blocking 4-Hydroxyphenylpyruvate dioxygenase, an enzyme in plants that breaks down the amino acid tyrosine into molecules that are then used by plants to create other molecules that plants need.
Lactofen is applied as a foliar spray and is commonly used to control broadleaved weeds in soybeans, cereals, potatoes and peanuts. It may be combined with oil or fertilizer adjuvants and surfactants. Some formulations include solvents such as xylenes and cumene. [1] It is also used as a fungicide for Sclerotinia white moulds on soybean. [4] [5 ...
Diflufenican has shown control over: wild radish, wild turnip, turnip weed, [6] multiply herbicide resistant waterhemp [7] (applied pre-emergence), hedge mustard, Indian hedge mustard, charlock, deadnettle, prickly lettuce, pheasant's eye, [11] Galium aparine, ivy-leaved speedwell and Veronica persica; [10] and suppression of capeweed, crassula ...
Dicamba is a selective and systemic herbicide that kills annual and perennial broadleaf weeds. [10] Its primary commercial applications are weed control for grain crops and turf areas. It is also used to control brush and bracken in pastures, as well as controlling legumes and cacti.
Amaranthus tuberculatus, commonly known as roughfruit amaranth, [4] rough-fruited water-hemp, [5] tall waterhemp, or common waterhemp, [6] [7] is a species of flowering plant. It is a summer annual broadleaf with a germination period that lasts several months. [8] Tall waterhemp has been reported as a weed in 40 of 50 U.S. states. [9]
It has been found nontoxic to bees and marginally toxic to fish (rainbow trout LC 50 (96 hr) = 117 ppm). [ 4 ] Garlon's fact sheet for their triclopyr ester product indicates that triclopyr is highly toxic to fish, aquatic plants, and aquatic invertebrates, and should never be used in waterways, wetlands, or other sensitive habitats. [ 6 ]
Recirculating aquaculture systems (RAS) are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. [1] Other types of filtration and environmental control are often also necessary to maintain clean water and provide a suitable habitat for fish. [ 2 ]
One major complication to the use of herbicides for weed control is the ability of plants to evolve herbicide resistance, rendering the herbicides ineffective against target plants. Out of 31 known herbicide modes of action, weeds have evolved resistance to 21. 268 plant species are known to have evolved herbicide resistance at least once. [ 59 ]
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