PPQ

 

Plant Protection Quarterly

 
Volume 7 Issue 2, 1992

 

Contents

 

Editorial

The last barrier.

Neil D. Hallam.

42

Research reports

Variation and varietal determination in Hypericum perforatum L. (St. John’s wort) in New South Wales.

M.H. Campbell, C.E. May, I.A. Southwell, J.D. Tomlinson and P.W. Michael.

43

Residual effects of Oxyfluorfen on the establishment of surface-sown pasture species.

M.H. Campbell.

46

Application methods for granular insecticides to control Heteronyx piceus Blanchard (Coleoptera: Scarabaeidae) larvae in peanuts in Queensland.

D.J. Rogers and H.B. Brier.

48

Evaluation of fungicides to control take-all and rhizoctonia root rot of wheat.

P.J. Cotterill and L.K. McLean.

51

The effects of various agronomic practices on the incidence of bacterial blight of cotton.

S.J. Allen, A.S. Hodgson and G.A. Constable.

55

Evaluation of two insect growth regulators for insect pest control in the Australian mushroom industry.

A.D. Clift and M.A. Terras.

59

Spray-topping of wild oats (Avena spp.) in wheat with selective herbicides.

R.W. Medd, M.G. McMillan and A.S. Cook.

62

An appraisal of opportunities to reduce herbicide use.

J.H. Combellack.

66

Southern African plants naturalized in Australia: a review of weed status and biological control potential.

John K. Scott and E.S. Delfosse.

70