Invited Addresses

Opportunities for improving crop yields through research - a physiological perspective
D.J. Chalmers

Salinity - an environmental constraint on crop productivity
Michael C. Shannon

"The shock of the new" constraints on farmer use of new technology
NF Clark

Economic and marketing influences on future agronomic production 
M J Taylor

Soil and plant testing in Australia1
D.J. Reuter and R.J. Hannam

The genetic organization of nitrogen-fixing rhizobium species: past and future applications to agriculture. 
Barry G. Rolfe and Alan E. Richardson

Grain legumes in Australia 
John Hamblin

Water use efficiency of non-irrigated field crops
M.W. Perry

Effects of deep ripping on cropping soils and crop production
A. Ellington