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Results tagged with toxicology
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user 338
The branch of biology, chemistry, and medicine concerned with the study of the adverse effects of chemicals on living organisms.
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Why doesn't Clopyralid damage cool season lawn grasses?
I use Clopyralid (3,6-dichloro-2-pyridinecarboxilic acid) to kill broad leaved weeds in lawns. From my understanding, it works by mimicking an auxin which affects plant growth. Naturally this pulls th …
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6
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1
answer
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How does MSMA kill crabgrass with only minimal damage to lawn grasses?
I use MSMA (Monosodium methyl arsenate) to kill crabgrass in lawns. I am not certain of the mode of action.
How does this chemical work? How does it target the annual grassy weeds, without damagin …
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9
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How does Halosulfuron-methyl kill nutsedge, while leaving lawn grass and most weeds undamaged?
I use Halosulfuron-methyl to control yellow and purple nutsedge in lawns. This chemical acts by interfering with the acetolactate synthase enzyme, which quickly slows cell division, and growth at all …
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6
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1
answer
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Why doesn't Fenoxaprop-P-ethyl damage cool season lawns?
For controlling bermudagrass, Cynodon dactylon, a serious perennial grassy lawn weed in my area, I use the herbicide Fenoxaprop-P-ethyl. It kills the bermudagrass rather well, without damaging the coo …
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3
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1
answer
313
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How can a plant resist glyphosate (Roundup) herbicide?
In my area, the most common weeds that strongly resists (N-(phosphonomethyl)glycine) (glyphosate) are the horseweed, or mare's tail, Conyza canadensis, and Canada thistle, Cirsium arvense There are se …
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7
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Why doesn't the herbicide 2,4-D damage lawn grass?
I sometimes use 2,4-Dichlorophenoxyacetic acid to control broadleaved weeds in lawns. It is selective, and quickly kills the dicot weeds, while other plants are unharmed.
2,4-D is a synthetic auxin …
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1
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1
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How does Haloxyfop control young grassy weeds in fields of broadleaved crops?
Haloxyfop (haloxyfop-P-methyl) is a selective herbicide used to control grassy weeds in young stages. The mode of action (iirc) is basically inhibition of acetyl CoA carboxylase (ACCase). Why does thi …
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2
votes
1
answer
114
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How can a plant become resistant to glufosinate?
From Wikipedia, the mode of action of the non selective herbicide Glufosinate is:
Phosphinothricin is an glutamine synthetase inhibitor that binds to the glutamate site. Glufosinate-treated plants …
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2
votes
1
answer
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How does Isoxaben kill newly germinating seeds, with almost no effects on established ones?
Isoxaben (N-[3-(1-ethyl-1-methylpropyl)-1,2-oxazol-5-yl]-2,6-dimethoxybenzamide) is a pre-emergent herbicide used in landscape beds before the application of mulch (my use for it, anyway). It kills th …
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3
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How does Trifluralin kill newly germinating seeds, with almost no effects on established ones?
Trifluralin (2,6-Dinitro-N,N-dipropyl-4-(trifluoromethyl)aniline) is a pre-emergent herbicide used in landscape beds before the application of mulch (my use for it, anyway). It kills the weeds as they …
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