利用1,3 - 二氯丙烯防治超窄行棉花中的根结线虫和肾形线虫

Management of Root-knot and Reniform Nematodes in Ultra-Narrow Row Cotton with 1,3-Dichloropropene.

作者信息

Kinloch R A, Rich J R

出版信息

J Nematol. 2001 Dec;33(4S):311-3.

PMID:19265894

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2620524/

Abstract

Ultra-narrow row cotton studies were conducted during 1999 at two field sites in northern Florida. One site was naturally infested with Meloidogyne incognita Race 3 and the other with Rotylenchulus reniformis. The fumigant 1,3-dichloropropene (1,3-D) was applied broadcast at rates of 0, 16, 32, 48, 64, 80, and 96 kg ai./ha in replicated plots before planting Delta Pine 655 BRR cotton in 25-cm-wide rows. Post-harvest soil population densities at the root-knot nematode site had a significant (P </= 0.01) negative linear relationship to 1,3-D dosage level. Cotton lint yields at this site had a significant (P </= 0.01) positive linear relationship to 1,3-D dosage level. At the reniform nematode site, there was no relationship between post-harvest soil population densities of reniform nematodes and 1,3-D dosage level. However, significant (P </= 0.01) positive curvilinear relationships were found between both plant heights and lint yield to 1,3-D dosage levels.

摘要

1999年在佛罗里达州北部的两个田间试验点开展了超窄行棉花研究。一个试验点自然感染了南方根结线虫3号小种，另一个感染了肾形肾状线虫。在按25厘米行距种植三角洲松655抗虫棉之前，在重复小区中以0、16、32、48、64、80和96千克有效成分/公顷的用量进行1,3 - 二氯丙烯（1,3 - D）土壤熏蒸处理。在根结线虫试验点，收获后土壤中的线虫种群密度与1,3 - D用量水平呈显著（P≤0.01）负线性关系。该试验点的皮棉产量与1,3 - D用量水平呈显著（P≤0.01）正线性关系。在肾形线虫试验点，收获后土壤中肾形线虫的种群密度与1,3 - D用量水平之间没有关系。然而，植株高度和皮棉产量与1,3 - D用量水平之间均呈显著（P≤0.01）正曲线关系。