A common misconception is that, like humans, pests become more lethargic in hot weather. Unfortunately, the opposite is true—in most cases warmer weather actually speeds up pest growth with pests reaching a damaging size and pest populations increasing more quickly. Also, hot weather is often associated with little or no rain. And rain, particularly heavy rain, can suppress aphid, mite… Read more »
While agrochemicals are an important component of many pest management programs, care must be taken to ensure that any spray operations use registered products that are applied according to the product label. The manager of an Emerald farm has recently been fined $10,000, pleading guilty to a breach of the Chemical Usage (Agriculture &Veterinary) Control Act 1988 after significant levels… Read more »
Determining stored pest status in a silo full of grain can be a bit like finding the proverbial needle in a haystack, but a pilot study by the Queensland Department of Agriculture and Fisheries on two farms in Southern Queensland indicated that a combination of sampling methods may provide a more accurate picture of pest species present. Increasing on-farm storage… Read more »
Aeration cooling uses fans on grain storages to lower grain temperatures, which helps maintain grain quality and reduce storage pest problems. When cooling grain using aeration, the aim is to reduce and keep grain temperatures below the following seasonal targets: Winter crops (stored November-March): below 23°C Summer crops (stored April-September): below 15°C Most insect storage pests prefer temperatures from 25-35°C… Read more »
Over the past few years the Queensland DAFF entomology team has led a team of national collaborators to develop an exciting new national ‘IPM guidelines for grains’ website. The website focuses on the major grain crops and their pests, and includes a range of supporting information to guide users in making pest management decisions.