A pump efficiency trial at Goondiwindi has highlighted the importance of testing individual pumping set-ups to identify the optimum operating point to achieve maximum efficiency.

As part of this project preliminary standards for AFIE were established, based on engineeringprinciples and the field experience of farmers and extension officers.

Last season there were four (Siokra 1-4, Siokra L22, Sicala 33 and CS 189) CSIRO mainstream varieties being grown commercially in most districts.

The performance of CSIRO varieties and new lines are evaluated each year in a series of regional trials, known as the Australian Cotton Cultivar Trial (ACCT).

This paper summarises a large number of strength and compression tests in a range of cotton soils.