Author:
Appleby Arnold P.,Brenchley Ronald G.
Abstract
Three experiments were conducted in the greenhouse to study the effect of 1,1′-dimethyl-4,4′-bipyridinium salt (paraquat) when sprayed directly on seeds at the soil surface. Germination of alfalfa (Medicago sativa L., var. DuPuit) and red clover (Trifolium pratense L., var. Kenland) was not affected at 1 1b/A paraquat, but germination of Kentucky bluegrass (Poa pratensis L., var. Newport) and perennial ryegrass (Lolium perenne L., var. Linn) was severely reduced at that rate. A protecting layer of soil approximately 0.25 inch thick was completely effective in protecting the seeds from the effect of paraquat. Germination of seven other grass species was reduced by 0.5 1b/A paraquat.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference4 articles.
1. Turley R. H. and Adamson R. M. 1963. Effect of paraquat-killed velvetgrass on new grass sowings. Res. Rept. Nat. Weed Comm. Canada, West. Sect. pp. 153–154.
2. THE METABOLISM OF HERBICIDES*
3. Herbicides in Seedbed Preparation for the Establishment of Grass Seed Fields
4. Mode of action of bipyridylium herbicides, diquat and paraquat;Calderbank;Proc. Brit. Weed Cont. Conf.,1964
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