• Baird, D. D. & Begeman, G. F. (1972). Post-emergence characterization of a new quackgrass herbicide. Proceedings of the NJS. Weed Control Conference, 26, 100102.
  • Caseley, J. C. & Coupland, D. (1979). Effect of simulated rain on retention, distribution, uptake, movement and activity of difenzoquat applied to wild oats. (In preparation.).
  • Claus, J. S. & Behrens, R. (1976). Glyphosate translocation and quakgrass rhizome bud kill. Weed Science, 24, 149.
  • Foy, C. L. & Hurtt, W. (1967). Further studies on root exudation of exogenous growth regulators in Phaseolus vulgaris (L.). Weed Society of America, p. 40 (Abstract).
  • Goatley, J. L. & Lewis, R. W. (1966). Composition of guttation fluid from rye, wheat and barley seedlings. Plant. Physiology, 41, 373.
  • Gottrup, O., O'Sullivan, P. A., Schraa, R. J. & Vanden Bobn, W. H. (1976). Uptake, translocation, metabolism and selectivity of glyphosate in Canada Thistle and Leafy Spurge. Weed Research, 16 197.
  • Hewitt, E. J. (1965). Sand and Water Culture Methods used in the Study of Plant Nutrition, 2nd ed. Technical Communication. Commonwealth Bureau of Horticulture and Plantation Crops (22), Farnham Royal, pp. 431432.
  • Klepper, B. & Kaufmann, M. R. (1966). Removal of salt from xylem sap by leaves and stems of guttating plants. Plant Physiology, 41, 1743.
  • Lund-Hoie, K. (1976). The correlation between the tolerance of Norway spruce (Picea abies) to glyphosate (N-phosphonomethylglycine) and the uptake, distribution and metabolism of the herbicide in the spruce plants. Meldinger fra Norges Landbrakshøgskole, 55, pp. 26.
  • McDougall, B. M. (1970). Movement of 14C-photosynthate into the roots of wheat seedlings and exudation of 14C from intact roots. New Phytologist, 69, 37.
  • Putnam, A. R. (1976). Fate of glyphosate in deciduous fruit trees. Weed Science, 24, 425.
  • Sacher, R. M. (1978). Safety of ‘Roundup’ in the environment. Monsanto ‘Roundup’ Seminar, Madrid pp. 57.
  • Slatyer, R. O. (1967). Plant-water Relationships. Academic Press, London, New York .
  • Sprankle, P., Meggitt, W. F. & Penner, D. (1975a). Adsorption, action and translocation of glyphosate. Weed Science, 23, 235.
  • Sprankle, P., Meggitt, W. F. & Penner, D. (1975b). Adsorption, mobility and microbial degradation of glyphosate in the soil. Weed Science, 23, 229.
  • Turner, J. C. (1968). Triton X-100 scintillant for carbon-14 labelled materials. International Journal of Applied Radiation and Isotopes, 19, 557563.
  • Zadoks, J. C, Chang, T. T. & Konzak, C. F. (1974). A dedimal code for the growth stages of cereals. Weed Research, 14, 415.