pre-emergence herbicide

См. также в других словарях:

• pre-emergent — /pri əˈmɜdʒənt/ (say pree uh merjuhnt) adjective 1. applied before the emergence of a pest, as a weed, fungus, insect, etc., so as to eliminate the pest quickly before it can damage a crop, lawn, etc. –noun 2. an agent, as a herbicide or… …  

• Roundup — Chembox new ImageFile = Glyphosate 2D skeletal.png ImageSize = ImageFile2 = Glyphosate 3D balls.png IUPACName = OtherNames =Glyphosate Section1 = Chembox Identifiers CASNo = 1071 83 6 PubChem = | SMILES = Section2 = Chembox Properties Formula =… …   Wikipedia

• weed — weed1 weedless, adj. weedlike, adj. /weed/, n. 1. a valueless plant growing wild, esp. one that grows on cultivated ground to the exclusion or injury of the desired crop. 2. any undesirable or troublesome plant, esp. one that grows profusely… …   Universalium

• Weed — /weed/, n. Thurlow /therr loh/, 1797 1882, U.S. journalist and politician. * * * Any plant growing where it is not wanted. On land under cultivation, weeds compete with crops for water, light, and nutrients. On rangelands and in pastures, weeds… …   Universalium

• Trifluralin — chembox new Reference= [ Merck Index , 11th Edition, 9598.] ImageFile=Trifluralin structure.png ImageSize=180px IUPACName=2,6 Dinitro N , N dipropyl 4 (trifluoromethyl)aniline OtherNames= Section1=Chembox Identifiers CASNo=1582 09 8 PubChem=5569… …   Wikipedia

• preemergence — |prē+ adjective Etymology: pre + emergence : used or occurring before emergence of seedlings aboveground dramatic success has been achieved with preemergence herbicides Chem. & Engineering News no preemergence injury occurred in the field… …   Useful english dictionary

• Alachlor — Chembox new ImageFile = Alachlor.png ImageSize = 200px IUPACName = 2 Chloro N (2,6 diethylphenyl) N (methoxymethyl)acetamide OtherNames = Section1 = Chembox Identifiers CASNo = 15972 60 8 PubChem = 2078 SMILES = CCC1=C(C(=CC=C1)CC)N(COC)C(=O)CCl… …   Wikipedia

• preemergence — /pree i merr jeuhns/, adj. occurring or applied before the emergence of a plant from the soil: preemergence herbicide. Also, pre emergence. [1930 35; PRE + EMERGENCE] * * * …   Universalium

• Acetochlor — Chembox new Reference = [http://pmep.cce.cornell.edu/profiles/extoxnet/24d captan/acetochlor ext.html Cornell University Extension Toxicology Network Pesticide Information Profile on Acetochlor] ] ImageFile = Acetochlor.png ImageSize = 200px… …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• Agriculture — General …   Wikipedia