Advertisement

Springer Nature is making Coronavirus research free. View research | View latest news | Sign up for updates

Influence of nutrient supply and plant growth regulators on phytotoxicity of imazamethabenz in wild oat (Avena fatua L.)

  • 31 Accesses

  • 1 Citations

Abstract

The influences of nutrient supply and plant growth regulators on the phytotoxicity of imazamethabenz in wild oat (Avena fatua L.) were evaluated in the greenhouse. Wild oat plants supplied with half-strength rather than one-eighth-strength Hoagland solution were more susceptible to imazamethabenz, showing greater growth reduction in main shoot and tillers. The improved herbicide efficacy at higher nutrient levels appeared related to increased herbicide interception by the greater leaf surface available. Leaves developing at either nutrient level did not differ significantly in epicuticular wax, so differential absorption appeared unlikely. Wild oat plants supplemented with nutrient, switching from low to high levels at the time of herbicide application, were as susceptible to imazamethabenz or even more so than plants growing with a constant high level of nutrition. The wild oat pure-line Montana 73, a strongly tillering line, was more susceptible to imazamethabenz than the limited-tillering line, Crop Science 40. Both 2,4-D and GA3 reduced imazamethabenz-induced tillering. Imazamethabenz efficacy was increased by GA3 but not by 2,4-D. These results support the hypothesis that lowering apical dominance of wild oat increases imazamethabenz activity in tillers, and that increased tillering following sublethal doses of imazamethabenz treatment is associated with the release of apical dominance.

This is a preview of subscription content, log in to check access.

References

  1. Andrews M, Dickson RL, Foreman MH, Dastgheib F, Field RJ (1989) The effect of different external nitrate concentrations on growth of Avena saliva cv. Amuri treated with diclofop-methyl. Ann Appl Biol 114:339–348

  2. Brown BT, Foster C, Phillips JN, Rattigan BM (1979) The indirect role of 2,4-D in the maintenance of apical dominance in decapitated sunflower seedlings (Helianthus annuus L.). Planta 146:475–480

  3. Chao JF (1993) Interactions between tillering and phytotoxicity of imazamethabenz in wild oat (Avena fatua L.). M.Sc. Thesis, University of Regina, Regina, SK, Canada

  4. Chao JF, Hsiao AI, Quick WA (1993) Effect of imazamethabenz on the main shoot growth and tillering of wild oat (Avena fatua L.). J Plant Growth Regul 12:141–147

  5. Chao JF, Hsiao AI, Quick WA, Hume JA (1994) Effect of decapitation on absorption, translocation, and phytotoxicity of imazamethabenz in wild oat (Avena fatua L.). J Plant Growth Regul 13:153–158

  6. Dickson RL, Andrews M, Field RJ, Dickson EL (1990) Effect of water stress, nitrogen, and gibberellic acid on fluazifop and glyphosate activity on oats (Avena saliva). Weed Sci 38:54–61

  7. Evans LT, Wardlaw IF, William CN (1964) Environmental control of growth. In: Barnard C (ed) Grasses and grasslands. Macmillan, London, pp 102–125

  8. Fletcher GM, Dale JE (1974) Growth of tiller buds in barley: Effects of shade treatment and mineral nutrition. Ann Bot 38:63–76

  9. Hoagland DR, Arnon DI (1939) The water culture method of growing plants without soil. Circ Calif Agric Exp Stn No 347

  10. Johnson BJ, Murphy TR (1991) Sequential herbicide and plant growth regulator treatments on bermudagrass (Cynodon spp.). Weed Technol 5:607–611

  11. Kupka J (1992) Physiology of mineral nutrition of plants. In: Šebánek J (ed) Plant physiology. Elsevier, Amsterdam, pp 159–198

  12. Leopold AC (1949) The control of tillering in grasses by auxin. Am J Bot 36:437–440

  13. Little DL, Shaner DL (1991) Absorption and translocation of the imidazolinone herbicides. In: Shaner DL, O'Connor SL (eds) The imidazolinone herbicides. CRC Press, Boca Raton, pp 53–70

  14. Lutman PJW, Sagar GR (1975) The influence of the nitrogen status of oat plants (Avena sativa L.) on the interception and retention of foliar spray. Weed Res 15:217–220

  15. Macháčková I (1992) Growth and growth regulators. In: Šebánek J (ed) Plant physiology. Elsevier, Amsterdam, pp 215–271

  16. McIntyre GI (1990) The correlative inhibition of bud growth in perennial weeds: A nutritional perspective. Rev Weed Sci 5:27–48

  17. McIntyre GI, Hsiao AI (1982) Influence of nitrogen and humidity on rhizome bud growth and glyphosate translocation in quackgrass (Agropyron repens). Weed Sci 30:655–660

  18. Nalewaja JD, Woznica Z (1985) Environment and chlorsulfuron phytotoxicity. Weed Sci 33:395–399

  19. Naylor JM, Jana S (1976) Genetic adaptation for seed dormancy in Avena fatua. Can J Bot 54:306–312

  20. Oosterhuis DM, Wullschleger SD, Hampton RE, Ball RA (1990) Physiological response of rice (Oryza sativa) to fenoxaprop. Weed Sci 38:459–462

  21. Regimbai GA, Martin AR (1985) The influence of growth regulators and nitrogen on leafy spurge (Euphorbia esula) control with picloram. Weed Sci 33:109–113

  22. Rood SB (1985) Application of gibberellic acid to control tillering in early-maturing maize. Can J Plant Sci 65:901–911

  23. Shaner DL, Umeda K, Ciarlante DR, Los M (1982) AC 222, 293 a new postemergent herbicide for cereals: Greenhouse studies. Proc Brit Crop Prot Conf Weeds, pp 25–38

  24. Sharif R, Dale JE (1980) Growth-regulating substances and the growth of tiller buds in barley; effect of IAA and GA3. J Exp Bot 31:1191–1197

  25. Smith AM, Chow PNP (1990) The influence of Agral 90 surfactant on the activity of imazamethabenz in wild oats (Avena fatua L.). Weed Res 30:355–362

  26. Somody CN, Nalewaja JD, Miller SD (1984) Wild oat (Avena fatua) and Avena sterilis morphological characteristics and response to herbicides. Weed Sci 32:353–359

  27. Woodward EJ, Marshall C (1988) Effects of plant growth regulators and nutrient supply on tiller bud outgrowth in barley (Hordeum elistichum L.). Ann Bot 61:347–354

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Chao, J.F., Quick, W.A., Hsiao, A.I. et al. Influence of nutrient supply and plant growth regulators on phytotoxicity of imazamethabenz in wild oat (Avena fatua L.). J Plant Growth Regul 13, 195–201 (1994). https://doi.org/10.1007/BF00226037

Download citation

Keywords

  • Glyphosate
  • Apical Dominance
  • Tiller Number
  • Herbicide Application
  • Pure Line