Exudation of Glyphosate from Wheat (Triticum aestivum) Plants and Its Effects on Interplanted Corn (Zea mays) and Soybeans (Glycine max)
- 1 January 1982
- journal article
- research article
- Published by Cambridge University Press (CUP) in Weed Science
- Vol. 30 (3), 316-320
- https://doi.org/10.1017/s0043174500040601
Abstract
Glyphosate [N-(phosphonomethyl)glycine] applied at 1.1 kg/ha to wheat [Triticum aestivum (L.) ‘Arthur 71′] plants increased height and fresh weight of soybean [Glycine max (L.) Merr. ‘Ransom′] seedlings planted in the pot at time of application of the glyphosate as the number of wheat plants treated increased from 5 to 30/pot. Height and fresh weight of the soybean seedlings also increased as the rate of glyphosate applied to wheat plants (5/pot) increased from 1.1 to 6.7 kg/ha. Increasing the rate of glyphosate from 1.1 to 6.7 kg/ha, however, reduced the height and fresh weight of soybeans when 30 wheat plants/pot were treated. In addition, when 6.7 kg/ha of glyphosate were applied to wheat plants, soybean-seedling plant height and fresh weight decreased as the density of wheat plants per pot increased from 5 to 30. The 14C-glyphosate exuded into the soil from treated wheat plants was characterized by thin-layer chromatography. Trace amounts of the radio-label were present on thin-layer plates of leaf and stem extracts of corn (Zea mays L.) plants, which were growing in the same pots with the treated wheat plants. The zone of activity had the same Rf value as the glyphosate standard.Keywords
This publication has 18 references indexed in Scilit:
- PRESENCE OF 14C ACTIVITY IN ROOT EXUDATES AND GUTTATION FLUID FROM AGROPYRON REPENS TREATED WITH 14C‐LABELLED GLYPHOSATENew Phytologist, 1979
- Glyphosate and Paraquat Effects on Weed Seed Germination and Seedling EmergenceWeed Science, 1978
- Factors Affecting Toxicity and Translocation of Glyphosate in Cotton(Gossypium hirsutum)Weed Science, 1978
- The adsorption and degradation of glyphosate in five Hawaiian sugarcane soils*Weed Research, 1977
- Uptake, translocation, metabolism and selectivity of glyphosate in Canada thistle and leafy spurgeWeed Research, 1976
- Reduction of Silica and Increase in Tillering Induced inAgropyron repensby GlyphosateJournal of Experimental Botany, 1975
- Root Exudation of Herbicides by Woody Plants: Allelopathic ImplicationsNature, 1970
- Plant root exudatesThe Botanical Review, 1969
- Translocation and Metabolism of Radioactive 2,4-D in JimsonweedWeeds, 1964
- Plant Regulator Exudation, Persistence and Translocation of Exogenous Regulating Compounds That Exude from RootsJournal of Agricultural and Food Chemistry, 1964