preemergent

preemergent
Preventing the germination of seeds by inhibiting an important enzyme.

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  • preemergent — /pree i merr jeuhnt/, adj. Hort. 1. of or pertaining to seedlings before they emerge or appear above ground: a preemergent weed killer. n. 2. a preemergence chemical, as a herbicide. Also, pre emergent. [1955 60; PRE + EMERGENT] * * * …   Universalium

  • preemergent — ˌ adjective Etymology: pre + emergent : preemergence * * * /pree i merr jeuhnt/, adj. Hort. 1. of or pertaining to seedlings before they emerge or appear above ground: a preemergent weed killer. n. 2. a preemergence chemical, as a herbicide. Also …   Useful english dictionary

  • Preemergent herbicides — prevent the germination of seeds by inhibiting a key enzyme. In some areas of the world, preemergent herbicides are used to prevent crabgrass from appearing in summer lawns.2 brands of pre emergent herbicide* Pendulum, used for control of… …   Wikipedia

  • preemergent — adjective Date: 1959 preemergence …   New Collegiate Dictionary

  • preemergent — pre·emergent …   English syllables

  • Dimethyl tetrachloroterephthalate — IUPAC name Dimethyl 2,3,5,6 tetrachlorobenzene 1,4 dicarboxylate …   Wikipedia

  • Dithiopyr — IUPAC name Dimethyl 2 (difluoromethyl) 4 (2 methylpropyl) 6 (trifluoromethyl)pyridine 3,5 dicarbothioate …   Wikipedia

  • Herbicide — Weeds killed with herbicide Herbicides, also commonly known as weedkillers, are pesticides used to kill unwanted plants.[1] Selective herbicides kill specific targets while leaving the desired crop relatively unharmed. Some of these act by… …   Wikipedia

  • Cuscuta — This article is about the plant. For the waterway, see River Dodder. Cuscuta Cuscuta europaea on Sambucus ebulus Scientific classification …   Wikipedia

  • Coleoptile — Schematic image of wheat coleoptile (above) and flag leaf (below). Coleoptile is the pointed protective sheath covering the emerging shoot in monocotyledons such as oats and grasses. Coleoptiles have two vascular bundles, one on either side.… …   Wikipedia

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