单词 | dalapon |
释义 | dalapon, n.|ˈdæləpɒn| Also Dalapon. [Prob. f. initial and other letters of di-alpha-propionic (acid): see di-2.] A selective herbicide used against perennial grasses, usually as the water-soluble sodium salt; 2,2-dichloropropionic acid, CH3CCl2COOH .
1953Farm Jrnl. Sept. 17/1 A new chemical, called Dalapon, may be what we need to knock out some of the grassy weeds that 2,4-D won't touch. 1960Farmer & Stockbreeder 8 Mar. 71/1 With the aid of dalapon, went on Dr. Hunter, we should be more able to change the botanical composition of hill swards. 1978Daily Tel. 22 Apr. 11/8 But what about couch grass? There is weedkiller that deals specifically with this... This one is called Dalapon. 1988New Scientist 17 Mar. 57/1 To prevent one variety of plant from dominating, you can burn or cut the vegetation or apply a herbicide such as dalapon. |

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