A new glasshouse was constructed at Narrabri to enable an expansion of the backcrossing of genetically engineered characters into CSIRO cotton varieties.

The aim of this project is to.assess the efficacy of three new classes of hydrolase genes that might have insecticidal activity when introduced into transgenic cotton.

Nitrification inhibitors were successfully used to improve the recovery of fertilizer N in the irrigated cotton-growing system.

To develop cotton varieties capable of germinating and establishing in cool soils, seed of Siokra S324 was mutated to induce variation. Ii.

The aim of the project, to enable cotton to be grown in experiments in the disciplines of breeding, agronomy and entomology by the CSIRO Cotton Research Unit at the Australian Cotton Research Institute, has been met O