Catches in pheromone traps can provide two types of information of interest to growers and researchers. Firstly, trap catches may directly indicate the abundance of moths in an area and hence the level of egg laying.in the crop. Unfortunately there doesn't appear to be any close association. Despite accounting for the effects of temperature and wind speed, Rothschild.et al (1981) found the relationship between trap catches (in cannister traps).and egg numbers was too variable on a day to day basis to be a reliable indicator of oviposition activity. Twine (1982), using texas traps