Very few economists are employed in Australian cotton research.

Over the last two growing seasons, sampling studies have been conducted to compare the distribution and abundance of Heliothis on different cotton varieties and to test the validity of the SIRA TAC equations which exp

Agenda Fifth Australian Cotton Conference ,Hotel Conrad and Jupiters Casino,Broadbeach, Gold Coast, Queensland

The wild ancestors of cotton are found in the arid regions of the world.

The potential for extensive adult movements is one of the key factors contributing to the success of Heliothis spp. as pests (Farrow & Daly 1987, Fitt 1989).

When it comes to varieties 1 don't believe that the growers needs will ever be totally met, we are always looking for improvement in varieties to satisfy, not only the ever tightening cost-return squeeze, but we

Rainfed cotton has been grown in Central Queensland since the 1920's but the total area has fluctuated in response to variable seasonal conditions as well as changing prices and market trends for cropping options

Information about the frequency and intensity of immigration and emigration movements is essential for forecasting Heliothis infestation levels in crops, and thus for developing more efficient strategies for managing

In dealing with nitrogen and Pix, points to put the issues in context are that nitrogen is the most important because it can increase yield by much more than a growth regulator such as Pix can.

The pattern of flight activity within or between habitats or crops is dependent upon the distribution of those habitats/crops in both space and time.

This paper is aimed at presenting some aspects of this debate and seeks to answer the following questions: *Are the dryland industrys needs being met by the spin-offs from the current breeding program?

The objective of the experiments reported in this paper is to determine the fate of fertilizer nitrogen applied to the grey clays in the Namoi Valley.

Heliothis spp. are clearly the major pests of Australian cotton and consequently there has been considerable research on their biology, ecology and control (Zalucki et al 1986).

Waterlogging can affect both the availability of micronutrients in the soil and the plant's ability to absorb nutrients from the soil.

An important question is the area of origin of these spring immigrants. Over the last 3 years, we have been investigating the ecology of Heliothis spp. in inland Australia (Gregg et al. 1987, 1989).

SOILpak is a soil management manual for cotton growing on cracking clays. It leads you through the decision-making process to a number of options. The manual presents options rather than hard-and-fast rules.

Heliothis spp.

The purpose of our four-year study on the Darling Downs was 1) to investigate the population dynamics of heliothis and to quantify the significance of the major controlling influences (parasites, predators, pathogens,

Aims: *Use data which relates mite numbers to yield loss in order to derive and test action thresholds.

Aims: (i) to quantify the contribution of alternative host crops to the dynamics of Heliothis on cotton using an elemental analysis technique developed in a previous project.