In agriculture we often hear reports of new wonder varieties that are about.to revolutionise agriculture, yet when these varieties are released, if.indeed they are released, they seem to fall far short of the publicit

The high quality cotton Namcala and its predecessor Hopicala have traditionally been grown on small percentages of the Australian cotton acreage (Mainly in NSW) as an alternative to the high yielding varieties such as

By now most people in the cotton industry have formed an opinion about Siratac as a concept and Siratac as a Company.

Bacterial blight [Xanthomonas campestris pv. malvacearum (Smith 1901) Dye.1972], of cotton produces angular spots on leaves and squares, causes defoliation, lesions on sterns and bolls and reduces yield.

The adult stages of the two Heliothis species found most abundantly in the summer cropping areas of Australia (H. armigera and .H. punctigera) are easily distinguishable and have been so for some time.

A knowledge of dispersal is essential to an understanding of population control and to the management of insecticide resistance.

Resistance is seen as a manifestation of the most basic property of life, namely the capacity of organisms to evolve in response to changing environmental conditions and to adapt to new circumstances.

Numerous studies on the effect of the nectariless gene on insect pests of cotton have been carried out both overseas and in Australia.

In 1981 we released SICOT 3 to the industry.

Commercial cotton crops in the major New South Wales production areas were inspected during the 1983/84 growing season.

With increasing problems of resistance to chemical pesticides amongst cotton pests, especially Heliothis, more attention is being given to biological control agents, including pathogens.

With the appearance of pvrethroid resistance in Heliothis armigera during the 1992/3 cropping season a strategy aimed at limiting the development of widespread resistance was rapidly implemented .H.

Catches in pheromone traps can provide two types of information of interest to growers and researchers.

The pink spotted bollworm (Pectinophora scutigera) has been an important.pest of cotton since 1924 in coastal, and sub-coastal Dawson-Callide regions of central Queensland.

Different cultivars are now becoming commercially available including Australian bred cultivars, and cotton growers now have a choice of which cultivar to plant.

At Narrabri we are continuing our breeding program to develop locally adapted early maturing varieties.

At Emerald, in the 1982/83 season, significant levels of field resistance in Heliothis armiger to synthetic pyrethroid insecticides were detected.

The cotton bollworm, Heliothis armiger is a very important cotton pest in Australia.

Intense selection pressure has led to the development of insecticide resistance

I will first mention some of the features distinguishing "Australian Conditions".