Plant Pathology Commons^™

Inoculation And Lime-Pelleting Of Leguminous Seeds, W P. Cass Smith, Olga M. Goss

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

IN Western Australia extensive areas of new land are brought under cultivation each year.

Much of this virgin soil is only sparsely populated with the beneficial rhizobial bacteria which nodulate the roots of common pasture and forage legumes, such as subterranean clover, barrel medic, lucerne and field pea.

Rust Of Snapdragons, O M. Goss

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

RUST 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.

The Red-Legged Earth Mite And The Lucerne Flea [Replaced By Farmnote 67/86], Clee Francis Howard Jenkins

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

THE red-legged earth mite and the lucerne flea are the two most important pasture pests of Western Australia.

They commonly retard the establishment of new pastures by causing serious damage to pasture legume seedlings and in some seasons can damage cereal crops.

This article describes the pests and gives current recommended control measures.

Leaf Spot Diseases Of Strawberry, Department Of Agriculture, Western Australia

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

Leaf spot and leaf scorch are two important' fungal diseases of strawberry in Western Australia.

Satisfactory control can be obtained by good cultural methods and with captan or phaltan fungicides in a suitable spray programme.

Recommended Wheat Varieties, 1965 : State Wheat Advisory Committee Recommendations For Wheat Varieties For 1965 Plantings, Department Of Agriculture, Western Australia

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

State Wheat Advisory Committee recommendations for wheat varieties for 1965 plantings.

THE wheat rust epidemic of 1963 has directed attention to resistance of varieties to this disease, new races of which have recently appeared in Western Australia.

However, last year was one of abnormal seasonal conditions, with late summer rains followed by a mild winter, and spring conditions which favoured rust.

Take-All Disease Of Wheat, S C. Chambers

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

Take-all is the most serious of the several root-rotting diseases of wheat in Western Australia.

In the absence of cereal crops, the fungus responsible for take-all survives on the roots of native grasses.

Losses can be minimised by adopting cultural methods which reduce the amount of infective material in the soil and which also encourage vigorous growth of the crop.

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.

Guard Against Bitter Pit, Department Of Agriculture, Western Australia

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

Two seasons ago bitter pit' caused heavy rejections of apples for export overseas and bad trade publicity.

To avoid a repetition of this, precautions should be taken against bitter pit on all susceptible varieties.

Linseed Growing In The Ord River Valley, D F. Beech

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

Experimental work with linseed at the Kimberley Research Station began in 1952 and has been intensified in the last four years.

Fertiliser requirements and methods of land preparation, sowing, irrigation and weed control have been established.

Suitable varieties have been selected. Farm-scale crops have been grown in the area and, although cotton is very much more remunerative as an establishment crop, it is expected that linseed will ultimately have a place in the Ord irrigation scheme.

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.

Control Of Perennial Grasses, Department Of Agriculture, Western Australia

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

Perennial grasses such as paspalum, kikuyu and couch can be controlled by spraying with a solution containing 2,2-DPA.

This is a non-poisonous powder which is sold under a variety of trade names.

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.

The Control Of Bitter Pit In Apples, Frank Melville, S. E. Hardisty, N. S. Shorter

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

Bitter pit is a physiological disorder of apples which causes considerable wastage of otherwise sound fruit .

It is a problem of world-wide occurrence and in Western Australia growing conditions appear particularly favourable for its development.

In recent years a practical means of control by calcium sprays has been developed.

Daffodil Eelworm Diseases, O M. Goss

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

EELWORMS or nematodes are minute worm-like organisms, some of which cause plant diseases.

The plant parasitic forms are not visible to the naked eye but the damage resulting from their attack can be quite severe.

A Revised List Of Fruit Diseases Recorded In Western Australia, R F. Doepel

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

THIS list of fruit diseases is a revision of part of the census published by Carne (1925) and supplemented by the same author in 1927.

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

Plant Pathologist Retires, Department Of Agriculture, Western Australia

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

The Chief of the Department of Agriculture's Biological Services Division, Mr. W. P. Cass Smith, retired from the Department on July 16 this year after many years of valuable service.

Take-All Of Wheat On The Esperance Downs : The Effect Of Multiple Cropping, S C. Chambers

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

A considerable increase in take-all occurred in the second crop of wheat following linseed, oats or vetches at the Esperance Downs Research Station.

THE take-all disease of wheat, caused by the fungus Ophiobolus graminis, has been responsible for many crop failures in the Esperance district during the past 15 years.

In an endeavour to find a practical solution to this problem, a crop rotation experiment was started in 1961 at the Esperance Downs Research Station.

Wheat Breeding And Variety Trials, 1963-64, J T. Reeves

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

A review of the wheat breeding and pedigree seed production by the Department of Agriculture.

Yields from the wheat variety trials at agricultural research stations during the 1963-64 season are presented and discussed.

Pasmo Of Linseed And Flax, S C. Chambers

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

Pasmo is a foliage disease which may cause severe damage to plantings of linseed and flax approaching maturity.

The disease is favoured by warm humid conditions and is especially destructive when crops have lodged extensively as a result of storms.

Rust Of Stone Fruit : Results Of Some Recent Spray Trials, R F. Doepel, S. E. Hardisty

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

RUST is caused by the fungus Tranzchelia discolor which attacks almonds, nectarines, peaches and, less commonly, apricots and plums in Western Australia.

Rust disease occurs in stone fruit orchards throughout the State and in some seasons causes premature leaf fall.

In unsprayed canning peach orchards growers have suffered considerable losses as a result of infected fruit being rejected for processing.

In recent spray trials satisfactory control has been achieved with the fungicides Delan, thiram and zineb.

Plant Diseases : Sclerotinia Disease In Vegetables : Control With Allisan Fungicide : A Progress Report, S C. Chambers, M. Hardie

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

During the past decade sclerotinia rot has become a major disease problem in metropolitan market gardens.

The fungicide Allisan has given promising results as a cover spray for the control of Sclerotinia. Two applications of the material reduced the incidence of Sclerotinia in runner beans from 45 per cent, to 15 per cent, and in lettuce from 9 per cent, to 2 per cent.

Plant Diseases : Bacterial Gall Of Oleander, G C. Macnish

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

OLEANDER is an attractive evergreen shrub which will grow in all but the coldest districts of Western Australia.

Unfortunately it is affected by a bacterial disease which causes unsightly malformation or galling of all above ground parts.

The organism causing this disease is the bacterium Pseudomonas tonelliana Ferraris.

Black Leg Of Cabbage And Related Plants, G C. Macnish

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

BLACK LEG is a disease which attacks many kinds of cruciferous plants.Under certain conditions it can cause serious damage.

In Western Australia it has been recorded on cabbages, cauliflowers and kales.

The dry rot form damages swedes.

Crinkle Of Plums And Wind-Suck Of Grapes, Department Of Agriculture, Western Australia

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

No abstract provided.

Bactericidal Sprays For Tomato Bacterial Canker, O M. Goss

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

BACTERIAL CANKER of tomatoes causes its greatest damage in crops grown in the spring and autumn months in Western Australia. It is particularly damaging when the weather is unusually stormy and cool.

Bactericidal sprays applied immediately after pruning or after severe storms should reduce the spread of tomato bacterial canker—report of an experiment.

Weeds In Lawns. 2. The Control Of Weeds In Lawns, Geoffrey A. Pearce

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

M OST lawns have weeds growing in them at some time during the year and in some lawns weed control becomes a major problem.

To the many people who like to keep a weed free turf it is therefore encouraging to know that nearly all weeds can be controlled with herbicides.

Spraying Guide For Control Of Pests And Diseases Of Fruit Trees, Department Of Agriculture, Western Australia

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

THE guide for spraying fruit trees has been prepared as a ready reference for fruit growers and as a reminder of control measures needed to deal with orchard pests and diseases.

The charts have been kept as brief as possible consistent with supplying details of recommended materials, concentrations and time of application.

Growers should consult Department of Agriculture leaflets or departmental officers for more detailed information.

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.

Recommended Wheat Varieties : 1964, Department Of Agriculture, Western Australia

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

THE State Wheat Advisory Committee has issued its official list of recommended wheat varieties for 1964.

Fig Mosaic, H L. Harvey

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

While fig production on a commercial scale is very limited in Western Australia, there is a wide distribution of trees grown singly or in small groups in orchards, farms and home gardens.

One disease that is widespread and sometimes causes concern to growers is fig mosaic.