Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-25T05:29:35.399Z Has data issue: false hasContentIssue false
  • English
  • Français

Factors Affecting Johnsongrass Rhizome Production and Germination

Published online by Cambridge University Press:  12 June 2017

C. G. McWhorter
C. G. McWhorter*
Affiliation:
S. Weed Sci. Lab., Plant Sci. Res. Div., Agr. Res. Serv., U. S. Dep. of Agr., Stoneville, Mississippi 38776
Get access Rights & Permissions [Opens in a new window]

Abstract

Approximately 80% of the johnsongrass (Sorghum halepense (L.) Pers.) rhizomes produced in clay soil were in the top 7.5 cm, but 80% of the rhizomes in sandy loam occurred in the top 12.5 cm. Distribution of rhizomes within the top 20 cm of soil was more uniform in sandy loam than in clay; yet, 5% of the rhizomes produced in clay occurred deeper than 20 cm, but only 1% of the rhizomes in sandy loam occurred deeper than 20 cm. Incorporation of a,a,a-trifluoro-2,6-dinitro-N,N-dipropyl-/7-toluidine (trifluralin) in soil at 0.84 kg/ha reduced rhizome production approximately 50% throughout the soil profile but reduced rhizome production most in the top 6 cm. More plants emerged from rhizomes when planted in sandy loam than in clay. More plants emerged from short rhizomes (76 mm) than from long rhizomes (152 mm) when planted at depths to 7.6 cm, but the opposite trend was obtained when rhizomes were planted deeper. Percentage germination of rhizome buds increased as rhizomes were cut into smaller pieces. Exposure of rhizomes to temperatures of 50 to 60 C killed buds within 1 to 3 days. Rhizomes usually survived temperatures of −3 to −5 C for only a few hours.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 1 , January 1972 , pp. 41 - 45
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Anderson, L. E., Appleby, A. P., and Weseloh, J. W. 1960. Characteristics of johnsongrass rhizomes. Weeds 8:402–406.Google Scholar
2. Ball, C. R. 1902. Johnson Grass: Report of investigations made during the season of 1901. U. S. Dep. of Agr. Bur. of Plant Ind. Bull. 11: 24 p.Google Scholar
3. Beasley, C. A. 1970. Development of auxiliary buds from johnsongrass rhizomes. Weed Sci. 18:218–222.CrossRefGoogle Scholar
4. Holm, L. 1969. Weed problems in developing countries. Weed Sci. 17:113–118.Google Scholar
5. Hull, R. J. 1969. Translocation of assimilates and dalapon in established johnsongrass. Weed Sci. 17:314–320.CrossRefGoogle Scholar
6. Hull, R. J. 1970. Germination control of johnsongrass rhizome buds. Weed Sci. 18:118–121.CrossRefGoogle Scholar
7. Ingle, M. and Rogers, B. J. 1957. Growth of johnsongrass rhizome buds. Res. Prog. Rep. West. Weed Contr. Conf. p. 162.Google Scholar
8. Ingle, M. and Rogers, B. J. 1961. The growth of a midwestern strain of Sorghum halepense under controlled conditions. Amer. J. Bot. 48:392–396.Google Scholar
9. McWhorter, C. G. 1961. Morphology and development of johnsongrass plants from seeds and rhizomes. Weeds 9: 558–562.Google Scholar
10. McWhorter, C. G. and Hartwig, E. E. 1965. Effectiveness of preplanting tillage in relation to herbicides in controlling johnsongrass for soybean production. Agron. J. 57:385–389.Google Scholar
11. Millhollon, R. W. 1970. MSMA for johnsongrass control in sugarcane. Weed Sci. 18:333–336.Google Scholar
12. Oyer, E. B., Gries, G. A., and Rogers, B. J. 1959. The seasonal development of Johnson grass plants. Weeds 7:13–19.CrossRefGoogle Scholar
13. Pop-Antoski, S. 1954. Contribution a la connaisance de la puissance des rhizomes des mauvaises herbes a former des organs aeriens per l'enfauissement a profondeurs differentes. Annu. Fac. Agr. Sylvic. Univ. Skopje, 1951/2, 5:233–262.Google Scholar
14. Stamper, E. R. 1957. The problem of johnson grass. Proc. S. Weed Conf. 10:149–152.Google Scholar