Campus Units

Plant Pathology and Microbiology, Agronomy

Document Type

Article

Publication Version

Published Version

Publication Date

12-1993

Journal or Book Title

Journal of Nematology

Volume

24

Issue

4

First Page

578

Last Page

584

Abstract

Laboratory studies were conducted to evaluate effects of selected herbicides on hatching of free eggs of the soybean cyst nematode, Heterodera glycines. The herbicides used were Atrazine (atrazine), Basagran (bentazon), Bladex (cyanazine), Blazer (acifluorfen), Command (clomazone), Lasso (alachlor), Sonalan (ethalfluralin), and Treflan (trifluralin). Treatments comprised two concentrations of commercial herbicide formulations and deionized water and 3.14 mM zinc sulfate as negative and positive controls, respectively. Eggs were extracted from females and cysts, surface disinfested, and incubated in herbicide or control solutions at 25 ± 2 C in darkness. Hatched second-stage juveniles were counted every other day for 24 days. Hatching of H. glycines eggs in 50 and 500 [mu]g/ml Blazer was 42 to 67% less than that in deionized water and 6l to 78% less than that in zinc sulfate solution. Zinc sulfate significantly increased hatching activity in 50 [mu]g/ml but not 500 [mu]g/ml Blazer. The other herbicides tested at various concentrations had no significant effect on egg hatching. The specific component of Blazer inhibiting egg hatching is unknown. Suppression of hatching by Blazer indicates that this postemergence soybean herbicide may have a potential role in managing H. glycines. Key words: acifluorfen, alachlor, atrazine, bentazon, clomazone, cyauazine, ethalfluralin, Glycine max, hatching, herbicide, Heterodera glycines, nematode, soybean cyst nematode, trifluralin.

Comments

This article is published as Wong, A. T. S., G. L. Tylka, and R. G. Hartzler. "Effects of Eight Herbicides on In Vitro Hatching of Heterodera glycines." Journal of Nematology 25, no. 4: 578-584. Posted with permission.

Copyright Owner

The Society of Nematologists

Language

en

File Format

application/pdf

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