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- Soil acidity (6)
- Western Australia (4)
- Pastures (3)
- Harvey River Estuary (W.A.) (2)
- Liming (2)
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- Peel Inlet (W.A.) (2)
- Wheat (2)
- Yields (2)
- Algae (1)
- Aluminium (1)
- Application methods (1)
- Barley (1)
- Bauxite residues (1)
- Cynodon dactylon (1)
- Deficiency diseases (1)
- Ehrharta calycina (1)
- Eragrostis curvula (1)
- Eutrophication (1)
- Fertilizers (1)
- Hyparrhenia hirta (1)
- Legumes (1)
- Losses from soil (1)
- Molybdenum (1)
- Nitrogen fixation (1)
- Nodulation (1)
- Nutritional disorders (1)
- Phosphorus fertilizers (1)
- Plant breeding (1)
- Sandy soils (1)
- Soil amendments (1)
Articles 1 - 11 of 11
Full-Text Articles in Life Sciences
Soil Acidity And Legume Nodulation, J G. Howieson, M. A. Ewing
Soil Acidity And Legume Nodulation, J G. Howieson, M. A. Ewing
Journal of the Department of Agriculture, Western Australia, Series 4
Nitrogen is a basic constituent of protien and is essential to all forms of life. Many agricultural plants are legumes - a group of plants which, in co-operation with specialised soil bacteria, fix their own nitrogen from the air. When the legume dies, the organic matter breaks down anf the nitrogen becomes available to the following crops.
Soil acidity is a major factor limitimg the successful association between legumes and their beneficial soil bacteria in Western Australia.
Breeding Wheat Varieties For Acid Soils, I R. Barclay
Breeding Wheat Varieties For Acid Soils, I R. Barclay
Journal of the Department of Agriculture, Western Australia, Series 4
Wheat varieties with improved tolerance of acid soils cold increase yeilds be perhaps 20 per cent or more over a substantialarea ofWestern Australia's eastern wheatbelt.
Aluminium toxicity is probably the main cause of poor root growth and therefore reduced yields on these soils.
Modifying Fertiliser Practices, J S. Yeates, D. M. Deeley, M. F. Clarke, D. Allen
Modifying Fertiliser Practices, J S. Yeates, D. M. Deeley, M. F. Clarke, D. Allen
Journal of the Department of Agriculture, Western Australia, Series 4
If modified fertiliser practices are adopted phosphorus losses from the Peel-Harvey catchment can be reduced. Farmers can save money on fertiliser applications and the need for more expensive catchment management measures to reduce algal pollution of the estuary will be avoided.
Research data available so far indicate that, with farmer co-operation and the use of the new slow release fertiliser New Coastal Superphosphate, long-term phosphorus application rates can be reduced by 30-40 per cent - and possibly even halved - without lowering agricultural production. This will also reduce phosphorus loss to drainage water.
Although much of the research since 1982 …
Tackling The Problem Off The Farm, C M. Croft
Tackling The Problem Off The Farm, C M. Croft
Journal of the Department of Agriculture, Western Australia, Series 4
Methods of redusing phosphorus losses from the catchment soils of the Peel-Harvey esturine system have been discussed in other articles in this Journal.
This article briefly discusses a range of 'off the farm' techniques to improve phosphorus flushing from Peel Inlet or Harvey Estuary to the sea and to treat the phosphorus and the algae. These techniques were among more than 100 management options evaluated by the Peel-Harvey Study Group.
Soil Acidity On High Rainfall Pastures, J S. Yeates, D. A. Mcghie, I. R. Wilson
Soil Acidity On High Rainfall Pastures, J S. Yeates, D. A. Mcghie, I. R. Wilson
Journal of the Department of Agriculture, Western Australia, Series 4
Most soils of the high rainfall area of south-western Western Australia are naturally acis.
The most acid group of soils, the peaty sands. have been routinely limed before subterranean clover pastures were established since research in the 1950s showed that poor Rhizobium nodulation could be overcome with the application of about 2 tonnes per hectare of coastal limesand.
Molybdenum Deficiency In The Wheatbelt, M M. Riley
Molybdenum Deficiency In The Wheatbelt, M M. Riley
Journal of the Department of Agriculture, Western Australia, Series 4
The trace element molybdenum is needed in very small amounts in nitrogen metabolisms of crops and pastures. One of the projects that started as a result of the overall soil acidity research programme was the examination of molybdenum deficiency on acid soils throughout the South-West of Western Australia.
Soil Acidity In The Eastern Wheatbelt, W M. Porter, I. R. Wilson
Soil Acidity In The Eastern Wheatbelt, W M. Porter, I. R. Wilson
Journal of the Department of Agriculture, Western Australia, Series 4
In Western Australia parts of the sandplain of the eastern wheatbelt are very acid and produce poor crops, It was not until the late 1970s that the effect of soil acidity on the productivity of the sandplain soils was examined in any detail.
Since then researchers have learnt a great deal about the nature of soil acidity in the eastern wheatbelt sandplain soils and can suggest management options for farmers.
This article discisses the problem of the very acid soils. It does not deal with the moderately acid, medium textured soils of the eastern wheatbelt. Although the acidity of these …
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.
Soil Improvement With Bauxite Residues, W H. Tacey, S. C. Ward, K. J. Summers, N. J. Barrow
Soil Improvement With Bauxite Residues, W H. Tacey, S. C. Ward, K. J. Summers, N. J. Barrow
Journal of the Department of Agriculture, Western Australia, Series 4
The sandy soils of the Peel-Harvey catchment hold water and nutrients very poorly. The Gavin ridges dry out quickly during rainless periods and this severely limits pasture growth. These ridges and the lower lying Joel and Coolup sands also lose a large proportion of the phosphorus, sulfer and potash fertilisers applied to them. Normally the sands lack clay materials to bind and hold the nutrients so rainfall leaches them out.
The Peel-Harvey Study Group, CSIRO, Alcoa and Murdock University have studied the use of a residue from bauxite mining to help overcome these problems. The treated residue has a texture …
Alternative Pasture Species For Deep Sands, D A. Nicholas
Alternative Pasture Species For Deep Sands, D A. Nicholas
Journal of the Department of Agriculture, Western Australia, Series 4
Although the climate of the swan coastal plain between Perth and Bunbury is suitable for growing a range of pasture species, some soil types greatly limit this range.
Pasture species commonly grown in the South-West, such as subteranean clover and annual ryegrass, can only be grown successfully on the better soils of the coastal plain - the loams, yellow sands and Joel sands. On the freely drained, deep, infertile Gavin sands such species rarely persist because of the soil's poor water holding capacity, and its water repellency and its poor ability to retain nutrients.