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Effect of Growth Stage and Water Stress on Barnyardgrass (Echinochloa crus-galli) Control and on Glyphosate Absorption and Translocation

Published online by Cambridge University Press:  12 June 2017

M. S. Ahmadi ,
L. C. Haderlie  and
G. A. Wicks
M. S. Ahmadi
Affiliation:
Univ. of Nebraska, Lincoln, NE 68583
L. C. Haderlie
Affiliation:
Univ. of Nebraska, Lincoln, NE 68583
G. A. Wicks
Affiliation:
Univ. of Nebraska, Lincoln, NE 68583
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Abstract

Under greenhouse conditions, postemergence herbicide effectiveness was greater when barnyardgrass [Echinochloa crus-galli (L.) Beauv.] plants were 5-or 10-cm tall as compared to 15-or 20-cm tall. Absorption of 14C-glyphosate [N-(phosphonomethyl)glycine] decreased from 58% of applied to 47% as plant height increased from 5 to 15 cm, and an additional reduction (to 32% of applied at 5 cm) occurred when terbutryn [2-(tert-butylamino)-4-(ethylamino)-6-(methylthio)-s-triazine] was added to glyphosate. Translocation of 14C-glyphosate was reduced in older plants or when terbutryn was added to glyphosate. Water stress studies included soil moisture levels of 10, 20, 30, and 40% moisture (PW). Herbicide treatments were less effective at soil moisture levels below field capacity (30 PW). When soil moisture was 10 PW (-37 bar) absorption of 14C-glyphosate was greatly reduced in plants treated at both 7.5-and 15-cm heights with or without terbutryn. At 10 PW only 15 to 20% of applied 14C was absorbed whereas at 40 PW, absorption was over 45% and 62% with and without terbutryn, respectively. The addition of terbutryn to glyphosate resulted in decreased translocation for all soil moisture levels except the 20 PW treatment at the 15-cm height. Translocation of 14C was greatly reduced for plants in soils at 10 PW for both herbicide treatments.

Keywords

Herbicideterbutrynatrazineparaquatweed controldrought
Type
Research Article
Information
Weed Science , Volume 28 , Issue 3 , May 1980 , pp. 277 - 282
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Agbakoba, Chuma S. O. and Goordin, J. R. 1969. Effect of stage of growth of field bindweed on absorption and translocation of 14C-labeled 2,4-D and picloram. Weed Sci. 17:436–438.CrossRefGoogle Scholar
2. Appleby, A. P. and Somabhi, M. 1978. Antagonistic effect of atrazine and simazine on glyphosate activity. Weed Sci. 26:135–139.CrossRefGoogle Scholar
3. Brandes, Gordon A. and Vincent, Harry L. 1961. Control of grasses and weeds in rice with 3,4-(dicloropropionanilide). Abstr. Weed Sci. Soc. Am. pp. 7–8.Google Scholar
4. Haderlie, L. C., Slife, F. W., and Butler, H. S. 1978. 14C-glyphosate absorption and translocation in germinating mazie (Zea mays) and soybean (Glycine max) seeds and in soybean plants. Weed Res. 18:269–273.CrossRefGoogle Scholar
5. Hammerton, J. L. 1965. Studies on weed species of the genus Polygonum L. III. Variation in susceptibility to 2-(2,4-dichlorophenoxy)-propionic acid within P. lapathifolium . Weed Res. 6: 132–141.CrossRefGoogle Scholar
6. Hartt, C. E. 1967. Effect of moisture supply upon translocation and storage of 14C in sugarcane. Plant Physiol. 42:338–346.CrossRefGoogle Scholar
7. Merkle, M. G. and Davis, F. S. 1967. Effect of moisture stress on absorption and movement of picloram and 2,4,5-T in beans. Weeds 15:10–12.CrossRefGoogle Scholar
8. Nelson, C. D. 1963. Effect of climate on the distribution and translocation of assimilates. Pages 149–173 in Evans, L. T., ed. Environmental Control of Plant Growth. Academic Press, New York.CrossRefGoogle Scholar
9. Norris, Robert F. 1977. Influence of soil moisture on activity of dichlofop-methyl. Abstr. Weed Sci. Soc. Am. pp. 102–103.Google Scholar
10. Robinson, R. G., Nelson, W. W., Thompson, R. L., and Thompson, J. R. 1964. Herbicides and mixtures of annual weed control in grain sorghum. Weeds 17:77–79.CrossRefGoogle Scholar
11. Roche, B. F. and Muzik, T. J. 1964. Ecological and physiological study of Echinochloa crus-galli (L.) Beauv. and the response of biotypes to sodium 2,2-dichloropropionate. Agron. J. 56:155–160.Google Scholar
12. Vengris, Jonas. 1967. Biological studies of barnyardgrass. Abstr. Weed Sci. Soc. Am. p. 37.Google Scholar