利用几丁质防治燕麦孢囊线虫和柑桔半穿刺线虫。

Use of Chitin for Controlling Heterodera avenae and Tylenchulus semipenetrans.

作者信息

Spiegel Y, Cohn E, Chet I

出版信息

J Nematol. 1989 Jul;21(3):419-22.

PMID:19287630

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2618932/

Abstract

The nematicidal effect of chitin, relative to other pesticides, was evaluated against two plant-parasitic nematodes, Heterodera avenae and Tylenchulus semipenetrans. Wheat seedlings, grown in soils artificially or naturally infested with H. avenae, were treated with 0.4% (w/w) ClandoSan (CLA) prepared from crustacean chitin, aldicarb (Temik 15G), or ethylene dibromide (EDB 90EC). The CLA treatment significantly increased wheat straw, ear, and average grain dry weights of nematode-infected plants, compared with the other two treatments. In an experiment covering two consecutive seasons, all three treatments reduced the number of cysts in the soil by 60%. In a one-season experiment, CLA reduced the number of cysts by 51% and aldicarb or EDB reduced cyst number by about 40%. A reduction of 50-90% in T. semipenetrans population densities on roots of two citrus rootstocks was recorded following an application of 0.2% (w/w) CLA to the soil.

摘要

相对于其他杀虫剂，对甲壳素对两种植物寄生线虫——燕麦孢囊线虫和半穿刺针线虫的杀线虫效果进行了评估。在人工或自然感染燕麦孢囊线虫的土壤中生长的小麦幼苗，用由甲壳类几丁质制备的0.4%（w/w）氯丹（CLA）、涕灭威（铁灭克15G）或二溴乙烷（EDB 90EC）进行处理。与其他两种处理相比，CLA处理显著增加了线虫感染植物的麦秸、麦穗和平均谷粒干重。在一个连续两个季节的试验中，所有三种处理均使土壤中的孢囊数量减少了60%。在一个单季试验中，CLA使孢囊数量减少了51%，涕灭威或二溴乙烷使孢囊数量减少了约40%。在向土壤中施用0.2%（w/w）CLA后，两种柑橘砧木根部的半穿刺针线虫种群密度降低了50-90%。