Life Sciences Commons^™

Fumigating A Farm To Control Grain Insects, J H. Moulden

Journal of the Department of Agriculture, Western Australia, Series 4

During the past year, two major projects for control of grain insects were organised on Western Australian farms. Both excercises aimed to eradicate grain pests which would have seriously threatened grain exports if they had become established.

The fumigation was done jointly by the Entemology branch of the Department of Agriculture, and the Agricultural Protection Board.

Learning To Live With Spotted Alfalfa Aphid, M Grimm

Journal of the Department of Agriculture, Western Australia, Series 4

The spotted alfalfa aphid which can devastate lucerne crops and perhaps also medic pastures, has been established in Western Australia since early 1978. However several methods of control are being developed, which could allow continued production of lucerne.

Armyworm Control In Coarse Grain Crops, G D. Rimes

Journal of the Department of Agriculture, Western Australia, Series 4

Investigations of armyworm infestations carried out in Western Australia during 976 have shown that a complex of three species is involved in the spasmodic outbreaks that may cause damage to course grain crops.

This article looks at the economics of control methods.

New Control For Esperance Armyworms, G R. Strickland, G. D. Rimes

Journal of the Department of Agriculture, Western Australia, Series 4

Armyworms are periodically responsible for serious cereal crop damage in Australia, often causing up to 80 per cent crop loss.

Amajor outbreak at Esperance in 1975 resulted in some 14,200 ha requiring treatment.

This was the first serious outbreak of armyworm for nine years in Western Australia.

A major new problem in the control of armyworm outbreaks is that use of DDT has been restricted by residue and withholding period problems, especially with a crop such as barley in which the grain is unprotected by glumes.

The trial results suggest that trichlorfon is a suitable material to eradicate armyworms and …

Rapeseed. 2. Insect Control, J A. Button, D. L. Hardy

Journal of the Department of Agriculture, Western Australia, Series 4

RAPESEED crops are highly susceptible to attack from a number of insects and, in most cases, some crop protection measures will be necessary to achieve satisfactory yields.

This article discusses the insects that have been a problem in rapeseed crops in Western Australia to date.

Control Of Insects In Cotton, D G. Shedley, D. L. Hardy, P. J. Michael

Journal of the Department of Agriculture, Western Australia, Series 4

Results of two experiments at the Ord Irrigation area in 1968 indicate that farmers may be spending more than necessary to obtain economic control of cotton pests in some seasons.

One experiment clearly demonstrated the relationship between low insect numbers and improved cotton yields—the second indicated that a moderate but well timed spray schedule, especially during the early part of the season, can result in more economic insect control than an intensive spray schedule.

Simple Treatment Will Protect Farm-Stored Grain, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

WITH unusually large quantities of grain likely to be stored on farms this season, 1970 will be an important year for the control of pests in stored grain.

Infested grain from farms is responsible for almost all outbreaks of infestation in bulk storages, leading to costly treatment by the grain handling authority. Effective control on the farm would eliminate most of this.

Grasshoppers And Locusts In Western Australia, Clee Francis Howard Jenkins

Journal of the Department of Agriculture, Western Australia, Series 4

GRASSHOPPERS and locusts are among the most ancient enemies of the farmer, for they figured prominently in Biblical times, and periodically throughout the ages have devastated crops in all parts of the world.

The Australian Field Cricket, J A. Button

Journal of the Department of Agriculture, Western Australia, Series 4

THE Australian field cricket, or the black field cricket as it is sometimes known, is a native of Australia and is widely distributed throughout the south western, south and south eastern sections of the continent.

Control Of Prodenia Litura On Cotton In The North Of Western Australia, P N. Forte, D. G. Shedley

Journal of the Department of Agriculture, Western Australia, Series 4

COTTON is subject to considerable insect attack at the new Ord River irrigation area in the East Kimberleys of Western Australia.

Although a long list of insects have been recorded as damaging cotton in this area there are two which have proved so far to present the biggest problem.

These are Heliothis punctigera and Prodenia litura.

Spraying For Grasshopper Control, T J. Tozer

Journal of the Department of Agriculture, Western Australia, Series 4

A BIG increase in cereal growing in the "hopper" belt has brought a general improvement in the grasshopper situation over the past few years.

This highlights the emphasis entomologists have placed on cultivation as the best known way of controlling grasshoppers.

The Webworm. 4. Control Of The Webworm, J A. Button

Journal of the Department of Agriculture, Western Australia, Series 4

EARLIER articles in this series have provided a broad oatline of the biology, life history and ecology of the webworm.

In this article chemical and cultural methods of control are considered in relation to this background information.

Control Of The Red-Legged Earth Mite And Lucerne Flea : Treatment Of Seed With Systemic Insecticides, M M H Wallace

Journal of the Department of Agriculture, Western Australia, Series 4

THE red-legged earth mite, Halotydeus destructor (Tuck.), and the lucerne flea, Sminthurus viridis (L.), are at present controlled effectively, cheaply and safely by a combined DDT/malathion spray (Jenkins, 1956, 1957) and this continues to be the general recommendation for farmers.

However, this combination has some disadvantages. The DDT in the spray ensures some residual control of the earth mite but has the unfortunate property of toxicity to the bdellid mites which are useful predators of the lucerne flea.

The malathion in the spray assists the DDT to control the earth mite and provides a good, quick kill of the lucerne …