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A Revised List Of Diseases Of Ornamental Plants Recorded In Western Australia, O M. Goss

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

THIS list of ornamental diseases constitutes a revision of portion of the census published by Carne (1925) and added to by the same author in 1927.

It contains also records of diseases identified in the period between these earlier publications and June 30, 1961.

Flower Greening And Witches' Broom, Department Of Agriculture, Western Australia

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

THE flower "greening" and witches' broom diseases may be found in a variety of plants.

Susceptible garden species include phlox, gerberas, vincas, dahlias, geraniums, asters and many others.

Supplementary List Of Disease Recorded On Various Hosts In Western Australia, G C. Macnish

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

THIS supplement contains the diseases recorded on all hosts during the period July 1, 1961 and June 30, 1963 inclusive.

A few disease records omitted from previous census have been incorporated. A list of previous publications in this series is appended. Also appended is a list of common names of host plants to facilitate reference.

Insect Pests Of Lawns. Part 3, D G. Shedley

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

DISTORTION of leaves and stems, general unthriftiness and bleaching of the leaves are typical symptoms of damage by sap sucking insects in lawns.

Light Lands In Western Australia. 3. Microbiological Problems In The Establishment Of Legumes On Light Lands, C A. Parker

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

EXPERIENCE has shown that the establishment of leguminous pastures is essential for successful economic development of Western Australian light lands.

Subterranean clover is the preferred legume in most light land areas, with lupins holding an important place in the more northerly districts, and on the deeper sands.

Bluebush Seed : Cleaning, Drying And Storing, C V. Malcolm

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

BLUEBUSH (Kochia brevifolia) is a perennial plant which occurs naturally in Western Australia.

In the past it has attracted little attention, but in recent years it has created interest as a highly nutritious and salt tolerant plant well adapted to certain salt affected soils in the wheatbelt.

A previous article (Bulletin No. 2630) by Smith and Malcolm drew attention to its use. One of the problems in establishing bluebush is to obtain seed supplies.

Rust Of Snapdragons, O M. Goss

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

RUST caused by the fungus Puccinia antirrhini is possibly the most destructive disease attacking antirrhinums or snapdragons.

In Western Australia, the disease first appeared in 1955 and since that time has become very prevalent and widespread, frequently with devastating effects.

Bordeaux Mixture, Department Of Agriculture, Western Australia

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

BORDEAUX mixture is still proving a most effective spray against many serious plant diseases in this State despite the increasing use of the newer organic fungicides.

When properly made and applied it adheres to the plants with great tenacity and strongly resists the weathering action by rain.

Winter Pests In The Pasture, P N. Forte

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

ALTHOUGH the pests concerned in attacking winter pastures are known to most farmers a discussion of their control and relative importance will not be out of place.

The principal pests concerned fall into two groups. Firstly the red-legged earth mite and lucerne flea whose attacks are most noticeable soon after germination and secondly a group of caterpillars which appear about the same time and whose attack is not noticed until a large amount of damage has been done.

Plant Diseases In Western Australia, S C. Chambers

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

This first supplement contains the diseases recorded on vegetables, cereals, grasses and pasture legumes, in the period between the publication of the revised lists (1), (2) for these hosts, and June 30, 1961

The Fruit Industry In Other Lands. 2. The Netherlands, Frank Melville

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

DURING a week spent in Holland, visits were made to the International Agricultural Centre, Wageningen, the Fruit Research Station, Wilhelminadorp, the Virus Indexing Station, Emmeloord, the Glass House Research Station, Naaldwyk, and the fruit and flower auctions at Naaldwyk and Aalsmeer.

Visits to commercial orchards were limited by time.

Geranium Rust, Department Of Agriculture, Western Australia

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

GERANIUMS are affected by relatively few troublesome diseases. However, in Western Australia, leaf rust of these plants is very common and can become a serious problem, particularly in the more susceptible varieties growing in sheltered positions.

Leaf Scorching, Department Of Agriculture, Western Australia

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

DURING the summer months, leaves of many plants develop browning and scorching which progresses inwards from the leaf margin or downwards from the leaf tip.

The affected parts become dry and brittle and may break away from the remaining green areas.

Ornamental trees, shrubs and other plants, certain orchard trees and in fact a large number of species may be affected.

Two plants which are very susceptible to this type of injury and are rarely seen without it are the Ioquat tree and the butterfly tree (Bauhinia).

Rice Stem Borers At The Kimberley Research Station, L E. Koch

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

STEM boring caterpillars have severely damaged rice crops at the Kimberley Research Station, near Wyndham, and studies have been made on the biology, abundance, and control of these insects.

Controlling The Ph Of Cultures Of Penicillium Notatum Through Its Carbon And Nitrogen Nutrition, Albert E. Dimond, George L. Peltier

Department of Plant Pathology: Faculty Publications

A survey of published material reveals relatively little information concerning the nutritional physiology of Penicillium notatum Westl. on synthetic media. Metabolism studies of P. notatum on various media have appeared to be incidental to the more pressing problem of producing penicillin quickly and in quantity. Fleming (1929) originally used a nutrient broth non-synthetic in nature. The Oxford group (Abraham et al., 1941) then adopted a modification of the so-called Czapek-Dox synthetic medium which supplies nitrogen as sodium nitrate and glucose as carbohydrate. Hobby, Meyer, and Chaffee (1942) suggested that brown sugar be substituted for glucose in this nutrient, with …

A Research Delusion, George L. Peltier

Department of Plant Pathology: Faculty Publications

With the administrative heads of many of our educational institutions demanding a doctorate of every member of the permanent staff, as it is supposed to be a prerogative for research, and the issuing of a list of titles published each year by their staff, the urge for so-called research, namely, a list of titles, goes madly on. In fact publication sometimes becomes a sort of self-defense, for the absence of any titles over a brief period of years stamps one either as lacking the ability of doing research or inefficient. Likewise, such a policy has permeated the staff, so that …

A Consideration Of The Physiology And Life History Of A Parasitic Botrytis On Pepper And Lettuce, George L. Peltier

Department of Plant Pathology: Faculty Publications

During the autumn of 1911, while gathering the peppers (Capsicum) in the vegetable plat of the Missouri Botanical Garden, the writer observed a fungus which was appearing as a parasite on the fruits. The peduncles were covered with a dark brown mass of conidia and mycelium, which so weakened the tissues that the fruit soon fell to the ground. On opening the peppers a number of large, flat, crust-like sclerotia, 1 cm. long and .5 cm. wide, were found to fill the interior. In most cases the seeds were also covered with the crust-like masses. The conidial stage …