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→ greenroofs:發揮維基百科的精神吧! 01/09 23:42
※ 引述《leodskao (Kiwi)》之銘言：
以下也是我查到的資料，需要的話也拿去吧
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免速隆 (Bensulfuron-methyl)
為廣譜稻田除草劑，用於芽前和早期芽後處理，
可高效地防除許多一年生和多年生的闊葉雜草和莎草，
施入水田後迅速釋出有效成分，被植物吸收，很快抑制敏感雜草的生長。
可能造成皮膚過敏，對水生生物有毒並具有長期影響。
The metabolic pathways of bensulfuron methyl in plants, soil, and animals are
similar. Primary metabolic pathways include O-demethylation of the
methoxypyrimidine moiety and cleavage of the sulfonylurea linkage. Minor
metabolic pathways include the hydrolysis of the bensulfuron methyl ester to
bensulfuron and hydroxylation of the pyrimidine ring.
參考資料：
http://pesticide.baphiq.gov.tw/ghs/images/upload/msds/GHS_SDS_P167.pdf
http://www.rsc.org/pdf/general/12bensul.pdf
http://www.tactri.gov.tw/htdocs/intro/pcd/MTFILES/bensulfuron-methyl.pdf
伏寄普 (Fluazifop-P-butyl)
Fluazifop-p-butyl kills annual and perennial grasses, but does little or no
harm to broad-leaved plants (dicots). It kills by inhibiting lipid synthesis
(lipids are necessary components of cell membranes), particularly at the
sites of active growth. In the environment, fluazifop-p-butyl is degraded
primarily through microbial metabolism and hydrolysis. It is not degraded
readily by sunlight. The half-life of fluazifop-p-butyl in soils is one to
two weeks. Because it binds strongly with soils, fluazifop-p-butyl it is not
highly mobile and is not likely to contaminate ground water or surface water
through surface or subsurface runoff. In water, fluazifop-p-butyl is rapidly
hydrolyzed to fluazifop acid, which is stable in water. Fluazifop-p-butyl is
of relatively low toxicity to birds and mammals, but can be highly toxic to
fish and aquatic invertebrates.
Mode of Action:
Fluazifop-p-butyl is a post-emergence phenoxy herbicide. It is absorbed
rapidly through leaf surfaces and quickly hydrolyzes to fluazifop acid. The
acid is transported primarily in the phloem and accumulates in the meristems
where it disrupts the synthesis of lipids in susceptible species (Urano 1982;
Erlingson 1988). Fluazifop-p-butyl inhibits acetyl CoA carboxylase, an enzyme
that catalyzes an early step in fatty acid synthesis. Lipids are important
components of cellular membranes, and when they cannot be produced in
sufficient quatities, cell membrane integrity fails, especially in regions of
active growth such as meristems. Weed Control Methods Handbook, The Nature
Conservancy, Tu et al. The cells then burst, or leak and die.
Fluazifop-p-butyl affects susceptible grasses, but does not affect most other
monocots or dicots.
參考資料：
http://www.invasive.org/gist/products/handbook/12.Fluazifop.pdf
http://www.tactri.gov.tw/htdocs/intro/pcd/MTFILES/fluazifop-P-butyl.pdf
翻譯一下(數據是pdf中節錄)
Target Species: annual and perennial grasses
Mode of Action: Lipid synthesis inhibitor
Primary degradation mech:microbial metabolism and hydrolysis
Mobility Potential: low
1.除掉單年生和多年生的草，對於雙子葉植物傷害較少
2.在生長點抑制acetyl CoA生合成，間接抑制脂質生合成
3.換黏附在土壤顆粒上，不大容易被陽光分解，主要是由微生物降解
4.對鳥類、動物毒性小相對魚和水中節肢生物毒性大
LD50 for rabbit >2420mg/kg for rat >4960mg/kg for fish 0.53mg/kg
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※ 編輯: leodskao 來自: 61.229.180.68 (01/07 17:22)
※ 編輯: leodskao 來自: 61.229.180.68 (01/07 17:23)