Crop management principles
Pest management
Insect management
A guide to insect management in Queensland fieldcrops
Checking and scouting for insect pests is described, for frequency and type of pest per crop, control measures with chemicals, NPV virus and Gemstar. Strategies to manage resistance to insecticide and guidelines for use are provided.
Egg parasitoids of heliothis
Trichogramma and Telenomus wasps are important biological control agents of heliothis (Helicoverpa) species.
Entomology - Assassin bugs: a beneficial insect for pest management
The Assassin Bug (Pristhesancus plagipennis) is a beneficial insect that is showing considerable promise for controlling Heliothis (Helicoverpa spp.) and plant-sucking bugs in cotton.
Entomology - Trap-cropping: A fad or a useful helicoverpa management tool?
Trap cropping has been part of a Helicoverpa armigera area-wide management strategy for several years. It is important to understand the aim of trap cropping before using or assessing trap crops.
Entomology - Trichogramma - Small wasps that pack a big punch
The Trichogramma wasp is smaller than a pin head, but can single-handedly prevent heliothis (Helicoverpa spp.) from causing serious damage to crops.
Exotic plant pests and diseases
This page summarises twelve plant diseases and pests of concern to Queensland's horticultural and agricultural industries.
Grain storage - Insect control in stored grain
Information on the management of insect pests in stored grain, including options, planning, inspection, cleaning, aeration cooling, protectant chemicals, and treating infested grain.
Grain storage - Short cuts for insect control
Insect pests are a major concern in grain storage, requiring necessary equipment and a plan for insect control. The dangers of using short cuts are described.
Insects - Heliothis
Information on managing heliothis (Helicoverpa sp.) in field crops.
Insects - Locusts
Description and management of locust and grasshopper pests of field crops.
insects - Pupae busting- Chemical free heliothis control
Heliothis 'over-winter', or hibernate, in the soil. This diapause is triggered by falling temperatures and shorter days in the second week of March. Soil cultivation before August causes 'pupae busting' insect destruction.
Insects - Silverleaf whitefly, a pest of cotton
The silverleaf whitefly (SLW), Bemisia tabaci B Biotype was first discovered in Australia in 1994. The first large-scale outbreak of this pest in cotton in Australia occurred in the 2001-02 season in the Emerald irrigation area.
Insects - Soil insects in Queensland
Principal soil insects are identified with diagrams, their habitats described, and threshold levels for control with insecticides, as well as crop rotation and stubble management.
Insects in field crops - Aphids, armyworm, cutworms and mites
Brief overview of aphids, armyworms, cutworms and mites and checking and scouting strategies in field crops.
IPM - Microplitis demolitor and ascovirus: Important natural enemies of helicoverpa
Helicoverpa (often called heliothis) is a serious pest of southern Queensland crops, particularly grain legumes, summer grains and cotton.
IPM - Parasitoids: Natural enemies of helicoverpa
A range of parasitoids and predatory insects attack helicoverpa caterpillars. Identifying and conserving these beneficial insects is fundamental to pest management reducing reliance on chemical insecticides.
IPM - Understanding Helicoverpa ecology and biology in southern Queensland: Know the enemy to manage it better
Helicoverpa is a serious pest of southern Queensland crops, especially grain legumes, summer grains and cotton. Understanding the lifecycle and behaviour of helicoverpa improves the chance of managing this pest.
IPM - Using NPV to manage helicoverpa in fieldcrops
NPV is a disease of helicoverpa (or heliothis) capterpillars. It is a tool for IPM control of Helicoverpa spp. The commercially available NPV only kills helicoverpa larvae.
