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Physical Sciences and Mathematics Commons™
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Articles 1 - 10 of 10
Full-Text Articles in Physical Sciences and Mathematics
Waterlogging : One Reason Why Our Crops And Pastures Are Not Achieving Maximum Yields, Department Of Agriculture And Food, Western Australia
Waterlogging : One Reason Why Our Crops And Pastures Are Not Achieving Maximum Yields, Department Of Agriculture And Food, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Water, either its lack"or excess, is the main factor affecting the yield of crops and pastures in Western Australia.
Tillage Systems And Soil Stability, R J. Jarvis
Tillage Systems And Soil Stability, R J. Jarvis
Journal of the Department of Agriculture, Western Australia, Series 4
No abstract provided.
Row Spacing And Cereal Crop Yield, R N. Burch, M. W. Perry
Row Spacing And Cereal Crop Yield, R N. Burch, M. W. Perry
Journal of the Department of Agriculture, Western Australia, Series 4
Cereal growers in western Australia have, traditionally, burned cereal stubbles. Burning stubble residues reduces weed seed populations and fungal pathogens, but its main purpose has been to eliminate straw which might cause blockages od seeding machinery and por see-bed preparation in the time critical seeding operation.
In 982, the Department of Agriculture began a project to determine whether wider spaced rows also depressed cereal yields in Western Australia. This article summarises some of the important results from that work.
Barley Production And Soil Acidity, P J. Dolling, W. M. Porter
Barley Production And Soil Acidity, P J. Dolling, W. M. Porter
Journal of the Department of Agriculture, Western Australia, Series 4
One of the causes of reduced plant yields on acid soils is aluminium toxicity. because barley is extremely sensitive to this mineral, a project started last year to examine the influence of soil acidity on barley production in the main barley growing areas of Western Australia.
This article discusses some of the background information on the project and its aims.
Soil Acidity And Liming In The Lower Great Southern, R N. Glencross, M. G. Clarke
Soil Acidity And Liming In The Lower Great Southern, R N. Glencross, M. G. Clarke
Journal of the Department of Agriculture, Western Australia, Series 4
In the 375 to 750 millimetre rainfall area of the Lower Great Southern, reports of loss of subterranean clover from established pastures, reduced carrying capacity for sheep and increasing soil acidity lead to the establishment in 1981 of a research programme into the effects of soil acidity on pasture productivity in that region.
Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia
Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The increasing areas of crops being sown in high rainfall districts make it likely that many crcp areas include sections liable to severe waterlogging.
This report presents results of a 1970 trial which clearly show that sowing such sections is not economic.
Copper Requirements For The South-Eastern Wheatbelt, D J. Gilbey, K. D. Greathead, J. W. Gartrell
Copper Requirements For The South-Eastern Wheatbelt, D J. Gilbey, K. D. Greathead, J. W. Gartrell
Journal of the Department of Agriculture, Western Australia, Series 4
FARM experience and the results of five years intensive research have shown copper deficiency to be widespread in the south-eastern wheatbelt.
On many areas of the south-eastern wheatbelt, copper deficiency is likely to restrict wheat yields.
Pasture Improvement In South Western Australia, J W. Malcolm
Pasture Improvement In South Western Australia, J W. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
"There is no doubt that Australia's enhanced prosperity in the last 30 years has been dependent in no small measure on the use of legume-based pastures." E. M. Hutron, June, 1968. *
THE LAST 30 years have seen an increased interest in pasture improvement which has transformed much of Western Australia. Large areas have been sown to new and improved pasture species—as a result productivity of both livestock and cereal enterprises has risen.
Cultivation : Does Haste Mean Waste?, H M. Fisher
Cultivation : Does Haste Mean Waste?, H M. Fisher
Journal of the Department of Agriculture, Western Australia, Series 4
Many farmers believe that increasing the speed of cultivation and seeding implements will cause deterioration of soils and reduced crop yields.
In a three-year trial on clover ley land at Wongan Hills higher cultivation speeds tended to increase rather than decrease wheat yields. There was some deterioration in the physical structure of the soil.
Profitable Returns From Saltland, C V. Malcolm
Profitable Returns From Saltland, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
The recent saltland survey disclosed that about 305,000 acres of land previously cleared and sown had become salt affected.
This represents a serious loss in production but is offset by the fact that much of the land is capable of producing high yields of good quality fodder.