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Articles 61 - 90 of 224
Full-Text Articles in Plant Pathology
Growing Barley For Grain In Western Australia : Varieties And Production Methods, H M. Fisher
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
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.
Controll Of Eelworm Diseases Of Bananas In Western Australia : A Review, O M. Goss, M. G. Hawson
Controll Of Eelworm Diseases Of Bananas In Western Australia : A Review, O M. Goss, M. G. Hawson
Journal of the Department of Agriculture, Western Australia, Series 4
During the 1950's, a decline in bananas in plantations in Carnarvon, caused by heavy infestations of eelworms, prompted investigations into eelworm control.
The work was started in 1955. The results and recommendations based on experiments have been published in Department of Agriculture Bulletin 3532.
Pasture Establishment In The Wheatbelt, M L. Poole
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
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
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
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.
Long Term Rotation Trials, Ian Rowland
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
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
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.
Wheat Diseases In Western Australia, W A. Shipton, W. R. Tweedie, K. J. Locke
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.
Cyanogenetic Plants Of Western Australia, T E H Aplin
Cyanogenetic Plants Of Western Australia, T E H Aplin
Journal of the Department of Agriculture, Western Australia, Series 4
THIS article deals with the more important cyanogenetic plants found in Western Australia.
It also deals with plants which have not been proved as cyanogenetic but which do produce toxic effects similar to those produced by cyanogenetic plants.
Symptoms, post mortem appearances and the treatment for affected stock are also dealt with.
Papaw Varieties For Carnarvon, Michael Gregory Hawson, D. W. Thomas
Papaw Varieties For Carnarvon, Michael Gregory Hawson, D. W. Thomas
Journal of the Department of Agriculture, Western Australia, Series 4
PAPAWS grow very well in the Carnarvon area of Western Australia and throughout the north of the State.
Some produce quite well as far south as Perth.
Barley Diseases In Western Australia, W A. Shipton, W. R. Tweedie
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
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
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.
Diseases Of Clovers In Western Australia, W A. Shipton
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
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
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.
Thrips Damage Of Grapes, A N. Sproul
Thrips Damage Of Grapes, A N. Sproul
Journal of the Department of Agriculture, Western Australia, Series 4
IN mid-December, a few bunches of Semillon grapes were submitted for examination from a Caversham Vineyard.
Damage to grape berries by thrips has not been recorded before in Western Australia.
Net Blotch Of Barley, W A. Shipton
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.
Black Spot Of Peas, Department Of Agriculture, Western Australia
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
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.
Leaf Scorching, Department Of Agriculture, Western Australia
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.
The 1965 Ord River Cotton Crop, G D. Oliver, A. W. Hogstrom
The 1965 Ord River Cotton Crop, G D. Oliver, A. W. Hogstrom
Journal of the Department of Agriculture, Western Australia, Series 4
THE financial results of 18 cotton growers in the Ord River Valley during the 1965 season were obtained during a survey conducted in August, 1965.
All farmers who have been allocated blocks and who grew cotton in 1965 were included in the survey.*
Nodulation Of Legumes On New Light Land. 1. Survival Of Rhizobia On Inoculated Pelleted Seed Held For Varying Periods Before Sowing Into Dry Soil, O M. Goss, W. A. Shipton
Nodulation Of Legumes On New Light Land. 1. Survival Of Rhizobia On Inoculated Pelleted Seed Held For Varying Periods Before Sowing Into Dry Soil, O M. Goss, W. A. Shipton
Journal of the Department of Agriculture, Western Australia, Series 4
MOST of the light land areas being opened up in Western Australia are very sparsely populated with the rhizobial bacteria so essential for successful legume establishment.
Seed inoculation is therefore a necessity.
Farmers often have to resort to dry sowing because of the large acreages being planted or late opening rains.
Nodulation Of Legumes On New Light Land. 4. Rhizobial Strains For Pasture Establishment, O M. Goss, W. A. Shipton
Nodulation Of Legumes On New Light Land. 4. Rhizobial Strains For Pasture Establishment, O M. Goss, W. A. Shipton
Journal of the Department of Agriculture, Western Australia, Series 4
LEGUMES are the basis of improved pastures in Western Australia.
Successful establishment of these legumes depends on the presence in the soil of suitable bacteria which will invade the roots and develop nodules in which nitrogen fixation is carried out. The nitrogen compounds produced are utilised by the plants, making them independent of soil nitrogen.
At the end of the season, the decomposition of the plant residues improves soil fertility.
Root Growth Of Apple Trees, J E L Cripps
Root Growth Of Apple Trees, J E L Cripps
Journal of the Department of Agriculture, Western Australia, Series 4
IT will surprise even experienced growers to know that an apple tree in W.A. needs twice the quantity of roots the same tree would need in a more temperate climate such as England's.
Grease Spot Of Passion Fruit, R F. Doepel
Grease Spot Of Passion Fruit, R F. Doepel
Journal of the Department of Agriculture, Western Australia, Series 4
PROLONGED wet periods during the winter months favour serious development of the bacterial disease grease spot in passion vine plantations.
The Black Beetle, Clee Francis Howard Jenkins
The Black Beetle, Clee Francis Howard Jenkins
Journal of the Department of Agriculture, Western Australia, Series 4
Since first reported in Western Australia 27 years ago, the black beetle has spread widely to become a well-known pest in metropolitan home lawns and public grassed areas.
THE black beetle (Heteronychus sanctae-helenae Blanchard) is a native of South Africa which seems to have first gained a footing in Australia in about 1930, for it was then recorded as a pest of maize in New South Wales. (Gurney 1934).