Williams M C, James L F
Am J Vet Res. 1983 Dec;44(12):2420-2.
Herbicides may raise, lower, or not affect the concentration of poisonous compounds in plants. Herbicides, 2,4,5-T and silvex controlled Wasatch milkvetch (Astragalus miser var oblongifolius) and markedly reduced the concentration of miserotoxin, a poisonous aliphatic nitro compound. The concentration of phototoxic furocoumarins in the leaves of spring parsley (Cymopterus watsonii) decreased to nontoxic concentrations 4 to 5 weeks after treatment with 2,4-D. The hydrocyanic acid content of wild cherry (Prunus spp) decreased after treatment with 2,4-D and 2,4,5-T, but increased in Sudangrass (Sorghum halapense) after treatment with 2,4-D. The alkaloid concentration in Barbey larkspur (Delphinium barbeyi) increased after treatment with 2,4,5-T or silvex, decreased in horsetail (Equisetum palustre) after treatment with MCPA, and was unaffected in Datura after treatment with several herbicides. The effect of herbicides on nitrate concentration in plants was dependent upon the species of plant and the herbicide used.
除草剂可能会提高、降低或不影响植物中有毒化合物的浓度。除草剂2,4,5 - T和西维因可控制瓦萨奇黄芪（Astragalus miser var oblongifolius），并显著降低了一种有毒脂肪族硝基化合物——苦马豆素的浓度。用2,4 - D处理4至5周后，春芹叶（Cymopterus watsonii）中的光毒性呋喃香豆素浓度降至无毒水平。用2,4 - D和2,4,5 - T处理后，野樱桃（Prunus spp）中的氢氰酸含量降低，但用2,4 - D处理后，苏丹草（Sorghum halapense）中的氢氰酸含量增加。用2,4,5 - T或西维因处理后，巴贝氏翠雀花（Delphinium barbeyi）中的生物碱浓度增加，用MCPA处理后，木贼（Equisetum palustre）中的生物碱浓度降低，用几种除草剂处理后，曼陀罗中的生物碱浓度未受影响。除草剂对植物中硝酸盐浓度的影响取决于植物种类和所用除草剂。
