1. Ecology, epidemiology and control of take-all, Rhizoctonia bare patch and cereal cyst nematode in wheat

   • Albert Rovira

   1989 Daniel McAlpine Memorial Lecture Pages: 101 - 111

2. Proceedings of the Phosphonic (Phosphorous) Acid Workshop

   • K. G. Pegg
   • R. F. de Boer

   1989 Daniel McAlpine Memorial Lecture Pages: 112 - 112

3. The complex mode of action of phosphonates

   • D. I. Guest
   • G. Bompeix

   Mode of action Pages: 113 - 115

4. The mechanism of phosphonic (phosphorous) acid action in Phytophthora

   • B. R. Grant
   • R. H. Dunstan
   • R. H. Smillie

   Mode of action Pages: 115 - 121

5. Phosphonic (phosphorous) acid treatments control Phytophthora diseases in avocado and pineapple

   • K. G. Pegg
   • A. W. Whiley
   • P. A. Hargreaves

   Efficacy Pages: 122 - 124

6. Efficacy of potassium phosphonate in controlling Phytophthora root rot of subterranean clover and ornamental plants in Victoria

   • R. F. de Boer
   • F. C. Greenhalgh

   Efficacy Pages: 124 - 125

7. Phosphonic (phosphorous) acid controls Plasmopara viticola the cause of downy mildew of grapevines

   • P. A. Magarey
   • T. J. Wicks
   • M. F. Wachtel

   Efficacy Pages: 126 - 127

8. The control of black pod, canker and seedling blight of cocoa, caused by Phytophthora palmivora, with potassium phosphonate

   • R. D. Anderson
   • D. I. Guest

   Efficacy Pages: 127 - 129

9. Efficacy of neutralised phosphonic acid (phosphorous acid) against Phytophthora palmivora pod rot and canker of cocoa

   • M. Holderness

   Efficacy Pages: 130 - 131

10. Evaluation of phosphonic (phosphorous) acid for the control of Phytophthora root rot in processing tomatoes

    • S. P. Flett
    • W. Ashcroft
    • P. Jerie

    Efficacy Pages: 131 - 132

11. Evaluation of phosphonic (phosphorous) acid for the control of Phytophthora cambivora on almond and cherry in South Australia

    • T. Wicks
    • B. Hall

    Efficacy Pages: 132 - 133

12. Efficacy of phosphonic acid in other host pathogen systems

    • J. B. Heaton
    • S. R. Dullahide

    Efficacy Pages: 133 - 134

13. Evaluation of phosphonic (phosphorous) acid for controlling Phytophthora crown and trunk rot of peach and apricot

    • T. M. Lim
    • P. H. Jerie
    • P. R. Merriman

    Efficacy Pages: 134 - 136

14. Analysis of residues of phosphonate in plant material

    • P. A. Hargreaves
    • L. J. Ruddle

    Chemistry Pages: 137 - 137

15. The manufacture and properties of phosphonic (phosphorous) acid

    • R. H. Dunhill

    Chemistry Pages: 138 - 139

16. Rapid, quantitative detection of phosphonate by simple ion-exchange chromatography using post-separation suppression

    • T. J. Glenn
    • M. R. Biggins
    • P. A. Magarey

    Chemistry Pages: 139 - 140

17. Phytotoxicity of phosphonic (phosphorous) acid and fosetyl-Al to the host in mycorrhizal cultures on maize

    • N. P. Wellings
    • J. P. Thompson
    • M. L. Fiske

    Miscellaneous Pages: 141 - 142

18. Tree injection methodology

    • K. G. Pegg

    Miscellaneous Pages: 142 - 143

19. Where to next in phosphonate research?

    • B. R. Grant

    Miscellaneous Pages: 144 - 145

20. Book reviews

    • G. B. Wildermuth
    • J. M. Stanton

    BookReview Pages: 146 - 147

21. Obituary

    • J. W. Randles

    Announcement Pages: 148 - 148