Skip to main content Accessibility help
×
Home

Johnsongrass (Sorghum halepense) Control as Influenced by Timing of Asulam and Fertilizer/Cultivation Applications

  • Stacey A. Bruff (a1), James L. Griffin (a1) and Edward P. Richard (a2)

Abstract

Field studies were conducted over 3 yr to evaluate rhizome johnsongrass control with asulam applied POST at 3.7 kg ai/ha 3 d before fertilization (DBF) or 0, 3, 7, 10, or 14 d after fertilization (DAF). Liquid fertilizer (18-6-12) was applied with injector knives at 0, 112, or 224 kg N/ha 5 cm on each side of a 60-cm line of rhizome johnsongrass present on 1.8-m-wide conventional sugarcane beds. Johnsongrass response to timing of asulam application after fertilization varied among years but was not affected by fertilizer rate. Johnsongrass control with asulam applied 3 DBF was greater than applications made 0, 3, or 7 DAF. With one exception, differences in johnsongrass control following fertilization and asulam application times were also reflected in the biomass of treated johnsongrass and its regrowth harvested 6 and 10 wk after asulam application, respectively. Reduced johnsongrass control associated with asulam application following fertilization was related to stress from root/rhizome injury during fertilizer placement rather than the quantity of fertilizer applied.

Copyright

References

Hide All
1. Anonymous. 1994. Controlling weeds in sugarcane. Louisiana Coop. Ext. Serv., Baton Rouge. Pub 2314 (5M) 16 p.
2. Bruff, S. A., Griffin, J. L., and Richard, E. P. Jr. 1995. Influence of rainfree period after asulam application on johnsongrass (Sorghum halepense) control. Weed Technol. 9:316320.
3. Friesen, H. A. 1961. Some factors affecting the control of wild oats with barban. Weed Sci. 9:185194.
4. Geisler, D. and Ferree, D. C. 1984. Response of plants to root pruning. Hortic. Rev. 6:155188.
5. Humphries, E. C. 1958. Effect of removal of a part of the root system on the subsequent growth of the root and shoot. Ann. Bot. 22:251257.
6. Matherne, R. J. 1974. The effect of number of cultivations on sugarcane production in Louisiana. Proc. Am. Soc. Sugar Cane Technol. 4(NS): 109112.
7. Millhollon, R. W. 1977. Sugarcane (Saccharum) production with minimum cultivation, fenac. and terbacil. Weed Sci. 25:431436.
8. Nalewaja, J. D. and Woznica, Z. 1988. Effect of environment and adjuvants on asulam phytotoxicity. Weed Sci. 36:367372.
9. Richard, E. P. Jr. 1986. Influence of surfactants on the toxicity of asulam to johnsongrass (Sorghum halepens) and sugarcane (Saccharum sp.). Weed Sci. 34:299303.
10. Richard, E. P. Jr. 1990. Timing effects on johnsongrass (Sorghum halepense) control with asulam in sugarcane (Saccharum sp.). Weed Technol. 4:8186.
11. Richard, E. P. Jr. 1991. Optimizing diluent volume improves johnsongrass control in sugarcane (Saccharum sp.) with asulam. Weed Technol. 5:363368.
12. Richard, E. P. Jr. and Griffin, J. L. 1993. Johnsongrass (Sorghum halepense) control in sugarcane (Saccharum sp.) with asulam applied alone and in mixtures. Weed Technol. 7:657667.
13. Schmid, B. and Bazzaz, F. A. 1987. Clonal integration and population structure in perennials: Effects of severing rhizome connections. Ecology 68:20162022.
14. Yadav, R. L. and Sharma, R. K. 1983. Effect of nitrogen application to the plant crop of sugarcane on the yield and quality of the subsequent ratoon crop. Indian J. Agric. Sci. 53:3843.
15. Yadav, R. L., Kumar, R., and Verma, R. S. 1990. Effects of nitrogen applied through new carriers on yield and quality of sugarcane. Indian J. Agric. Sci. 114:225230.

Keywords

Johnsongrass (Sorghum halepense) Control as Influenced by Timing of Asulam and Fertilizer/Cultivation Applications

  • Stacey A. Bruff (a1), James L. Griffin (a1) and Edward P. Richard (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed