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Plant Pathology

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Articles 9661 - 9690 of 9752

Full-Text Articles in Agronomy and Crop Sciences

Lupins In Western Australia. 5. The Grazing Value Of Green And Mature Lupins, John Sylvester Gladstones Jan 1970

Lupins In Western Australia. 5. The Grazing Value Of Green And Mature Lupins, John Sylvester Gladstones

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

WHETHER or not lupins are grown primarily as a grain crop, grazing of standing crops and harvested stubbles will continue to be an important use. This article examines the uses of sweet lupins for forage, and the main problem of lupin grazing, lupinosis.


Lupin Diseases, H L. Harvey Jan 1970

Lupin Diseases, H L. Harvey

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

The two major diseases of lupins in Western Australia, brown spot and bean yellow mosaic, can be reduced by careful management of lupin crops.


Growing Barley For Grain In Western Australia : Barley Quality, J A. Parish Jan 1970

Growing Barley For Grain In Western Australia : Barley Quality, J A. Parish

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

Plumpness and absence of pinched grain are desirable for both malting and feed barley.

This is a brief discussion of various Quality standards in barley and how they may not be met.


Growing Barley For Grain In Western Australia : Varieties And Production Methods, H M. Fisher Jan 1970

Growing Barley For Grain In Western Australia : Varieties And Production Methods, H M. Fisher

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

BARLEY is an adaptable crop which can be grown successfully throughout the cereal areas of Western Australia. It is more suited to the wetter areas than wheat and tolerates the drier, shorter season of the eastern cereal districts better than oats.


Lupins In Western Australia. 1. Species And Varieties, John Sylvester Gladstones Jan 1969

Lupins In Western Australia. 1. Species And Varieties, John Sylvester Gladstones

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

First in a series of articles on the varieties, cultivation and uses of lupins in Western Australia.

Lupins are ideally suited to the climate and soils of many districts of Western Australia and their cultivation here dates from the early years of the century.

However, although there were some 500,000 acres of lupins growing in the State in 1968, their cultivation in recent years has been largely limited to infertile sandplain soils where other legumes usually fail.


Pasture Establishment In The Wheatbelt, M L. Poole Jan 1969

Pasture Establishment In The Wheatbelt, M L. Poole

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

The value of legume based wheatbelt pastures is so great that considerable care is warranted during their establishment. Without such care patchy establishment or even complete failure is likely to occur.

IN THE WHEATBELT too many farmers still put less effort into their seeding of pasture species than their seeding of crops.

This may be because both compete for the farmer's time in the busy seeding period and it is the cereal crop which possesses the obvious cash value.

However, the total value of a good pasture has to be assessed over a period of several years because of its …


Linseed Production Survey : Esperance, 1968, R J. Guyton Jan 1969

Linseed Production Survey : Esperance, 1968, R J. Guyton

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

A SURVEY conducted after the 1967 linseed season found that although most farmers understood the requirements of linseed growing there were several crop failures. These were associated with time of planting, soil type and insect control measures.

The Esperance district office of the Department of Agriculture conducted a second survey during December, 1968 and January, 1969


Oat Diseases In Western Australia, W R. Tweedie, W. A. Shipton Jan 1969

Oat Diseases In Western Australia, W R. Tweedie, W. A. Shipton

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

OVER ONE MILLION acres of oats are grown yearly in this State, making the crop next in importance to wheat.

Pathogenic organisms are responsible for considerable reductions in yield, yet losses can be minimized if control measures are taken.


Linseed : An Alternative Crop For The South Coast, R J. Doyle, R. J. Guyton Jan 1969

Linseed : An Alternative Crop For The South Coast, R J. Doyle, R. J. Guyton

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

IN the over-17 inch rainfall zone of the south coast region of Western Australia animal production is the main farm enterprise.

Although farmers in the main cereal growing regions of W.A. crop about one-third of their cleared land each year, farmers in the south have been reluctant to crop more than about 12 per cent, of their cleared area.


Deferred Grazing Improves Soft Spinifex Association, H Suijdendorp Jan 1969

Deferred Grazing Improves Soft Spinifex Association, H Suijdendorp

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

THE Pastoral region in Western Australia where Triodia pungens (soft spinifex) makes up most of the vegetation, covers an area of about 17,000 square miles in the Forrest and De Grey pastoral areas.

On the deeper granitic sands in much of the region, plant associations revert to a pure stand of soft spinifex after about five or six years' grazing. It is common practice to burn at this stage, to encourage the re-establishment of other species and the production of palatable spinifex regrowth.


Lupins In Western Australia. 3. Cultivation Methods Continued, John Sylvester Gladstones Jan 1969

Lupins In Western Australia. 3. Cultivation Methods Continued, John Sylvester Gladstones

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

THE characteristics of the lupin varieties grown in Western Australia were described in the first two articles of the series (Journal of Agriculture, August and September, 1969), together with recommendations for growing bitter sandplain lupins.

This article gives general recommendations for growing grain lupins, and discusses the main diseases and pests of lupins in Western Australia and their control.


Long Term Rotation Trials, Ian Rowland Jan 1969

Long Term Rotation Trials, Ian Rowland

Experimental Summaries - Plant Research

The object of these trials is to attempt to determine the best rotation for each area or at least give some guidelines for recommendations as to the optimum rotation. Also to determine the effect of various pasture phases on the performance of the following crops and the number of crops required to utilise any accrued benefit from the pasture. In addition the trials on the Salmon Gums Research Station (68SG5) will attempt to compare cereal rotations on both volunteer and barrel medic pastures. It is also hoped to be able to get some estimate of grazing production from barrel medic …


Pasture Seed Production In Western Australia, B J. Quinlivan Jan 1969

Pasture Seed Production In Western Australia, B J. Quinlivan

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

Pasture seed production in Western Australia is an industry with a somewhat turbulent past. Booms and slumps have been the rule rather than the exception.

However, during the past few years there has been some degree of "stability"—if not in price, at least in terms of total production.


Barley Yellow Dwarf Virus In Western Australia, W A. Shipton Jan 1969

Barley Yellow Dwarf Virus In Western Australia, W A. Shipton

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

BARLEY yellow dwarf virus disease was first positively identified in Western Australia in 1961.

Records indicate that symptoms approximating those later found to be caused by this disease were reported as early as 1936.


Legumes Or Artificial Nitrogen?, N J. Halse Jan 1969

Legumes Or Artificial Nitrogen?, N J. Halse

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

Choosing between legumes and artificial nitrogen is not the problem which many farmers are making it.

This article deals with the choice in the mixed cereal and sheep farms of the Western Australian wheatbelt.


Wheat Diseases In Western Australia, W A. Shipton, W. R. Tweedie, K. J. Locke Jan 1968

Wheat Diseases In Western Australia, W A. Shipton, W. R. Tweedie, K. J. Locke

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

DISEASES caused by pathogenic organisms can seriously affect the yield of wheat. Some diseases are comparatively rare whereas others occur over a large area of the wheatbelt year after year.


The Certified Strains Of Subterranean Clover : Their Origin, Potential Use And Identification, B J. Quinlivan, C. M. Francis, M. L. Poole Jan 1968

The Certified Strains Of Subterranean Clover : Their Origin, Potential Use And Identification, B J. Quinlivan, C. M. Francis, M. L. Poole

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

SUBTERRANEAN CLOVER originated in the countries surrounding the Mediterranean Sea and in parts of Western Europe.

Therefore it is not surprising that it grows well in the agricultural districts of Western Australia, for these regions have a typically Mediterranean climate with cool wet winters and hot dry summers.


Barley Diseases In Western Australia, W A. Shipton, W. R. Tweedie Jan 1968

Barley Diseases In Western Australia, W A. Shipton, W. R. Tweedie

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

BARLEY DISEASES caused by pathogenic organisms are capable of reducing yields considerably.

The recognition of disease is important so that control measures can then be taken at the appropriate time.


Cereal Eelworm : A New Disease Of Cereal Crops In The Geraldton Area, R J. Parkin, Olga M. Goss Jan 1968

Cereal Eelworm : A New Disease Of Cereal Crops In The Geraldton Area, R J. Parkin, Olga M. Goss

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

CEREAL eelworm (Heterodera avenae) is a potentially serious disease of crops which was seen in the Geraldton area for the first time in the 1966-67 season.

It was first identified in this State at Beverley in 1958 and later near Northam in 1963.

The Geraldton region has been the only area found to be affected since.

The disease was identified on eight properties in 1966-67, and a further ten properties in 1967- 68. There are indications that many more properties could be affected in varying degrees.


Maintenance Phosphorus And Sulphur For Pastures : Progress Report, Walter Jacob Cox Jan 1968

Maintenance Phosphorus And Sulphur For Pastures : Progress Report, Walter Jacob Cox

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

PASTURE IMPROVEMENT has been based on topdressing with superphosphate, which supplies sulphur as well as phosphorus.

In the past, all the benefit due to superphosphate was attributed to the phosphorus.

It is only in recent years that the importance of the sulphur has been appreciated.


Northern Corn Leaf Blight (Helminthosporium Turcicum Pass.) On Susceptible And Resistant Corn, Saffet Baydar Jan 1968

Northern Corn Leaf Blight (Helminthosporium Turcicum Pass.) On Susceptible And Resistant Corn, Saffet Baydar

Open Access Master's Theses (through 2010)

The objectives of the research reported herein were to (1) become familiar with the technique of inoculating corn with Helminthosporium turcicum, (2) become familiar with a technique of evaluating the susceptibility of corn lines to H. turcicum, (3) become familiar with plant reaction and organism development in the various types of corn and (4) evaluate Turkish corn susceptibility in relation to various types of germ plasm in American corn lines in order to assist in combating the serious disease of Northern corn left blight in Turkey.

Comparative reactions of 10 Turkish, 5 multigenic resistant, 2 heterozygous monogenic …


The History, Characteristics And Potential Of Kondinin Rose Clover, E T. Bailey, N. B. Gayfer Jan 1967

The History, Characteristics And Potential Of Kondinin Rose Clover, E T. Bailey, N. B. Gayfer

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

Experimental and field performances of rose clover over fen years suggest that it will be increasingly used as a pasture legume in south-western Australia.

A number of lines differing in maturity and leaf markings have been selected locally and given cultivar (variety) names

The first of these lines to be selected was designated Kondinin. This paper describes its origin, history, characteristics and performance.


Diseases Of Clovers In Western Australia, W A. Shipton Jan 1967

Diseases Of Clovers In Western Australia, W A. Shipton

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

LEGUMES of the Trifolium species are grown widely in the State, and occupy an important place in our Agriculture.

There are a number of parasitic diseases of clovers, yet none have gained major economic importance.


The Effect Of Straw On The Emergence Of Wheat Seedlings, W A. Shipton, W. R. Tweedie Jan 1967

The Effect Of Straw On The Emergence Of Wheat Seedlings, W A. Shipton, W. R. Tweedie

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

The emergence of wheat seedlings was decreased substantially when seed was planted close to oaten straw.

When the grain was placed a 1/4 inch above a straw layer emergence was depressed by more than half.


Cereal Root Eelworm, O M. Goss Jan 1967

Cereal Root Eelworm, O M. Goss

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

CEREAL ROOT EELWORM* has recently been recorded from the older farming districts of Western Australia.

This eelworm can attack most cereals and grasses but is more damaging to wheat and oats.


Inoculation And Pelleting Of Lupin And Serradella Seed, W A. Shipton, C. A. Parker Jan 1966

Inoculation And Pelleting Of Lupin And Serradella Seed, W A. Shipton, C. A. Parker

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

LUPINS AND SERRADELLA are not as extensively grown in Western Australia as some other legumes, but they are useful pasture species, particularly on poorer sandy soils.

Virgin soils may contain rhizobial bacteria capable of nodulating some members of the lupin group, but none of these bacteria have been found to nodulate serradella (Lange, 1961).

The use of inoculated seed is imperative except where lupins have been grown before.


Net Blotch Of Barley, W A. Shipton Jan 1966

Net Blotch Of Barley, W A. Shipton

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

NET BLOTCH is the most prevalent disease of barley in Western Australia, and is capable of reducing yields considerably.

It is caused by the fungus Pyrenophora teres Drechsl.


Septoria Leaf Spot And Glume Blotch Of Wheat, W A. Shipton Jan 1966

Septoria Leaf Spot And Glume Blotch Of Wheat, W A. Shipton

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

SEPTORIA leaf spot and glume blotch of wheat occur throughout Australia and are capable of reducing crop yields.

While no estimates of yield losses are yet available in Western Australia both diseases can cause serious damage to crops.


Black Spot Of Peas, Department Of Agriculture, Western Australia Jan 1966

Black Spot Of Peas, Department Of Agriculture, Western Australia

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

THIS fungous disease of peas causes "black spot" and "stem rot" on affected plants. During the wet winter months the disease is often so severe that it is difficult to grow garden pea varieties satisfactorily; but in summer when hot, dry conditions usually prevail the disease is of little consequence.


Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton Jan 1966

Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton

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

High summer and autumn rainfalls, followed by rust infection of volunteer plants and favourable conditions during late winter and spring, lead to rust epidemics.

WIDESPREAD outbreaks of wheat stem rust are rare in Western Australia.