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Articles 10291 - 10320 of 11182
Full-Text Articles in Physical Sciences and Mathematics
Control Of Doublegee In Sub. Clover And Medic Pastures., P. Stewart, L. Mann
Control Of Doublegee In Sub. Clover And Medic Pastures., P. Stewart, L. Mann
Experimental Summaries - Plant Research
Trial 87ME61, 87ME68, 87WH49, 87ES39, 87NO80(B), 87NO80, 87WH67.
Doublegees in pasture are a major concern of many farmers in most of the agricultural areas in Western Australia. In pasture, doublegees tend to compete strongly the first year after crop and then decline in subsequent years. When cropped, doublegees again appear in large numbers. Unfortunately, the WADA recommendation for doublegee control in pasture of Tribunil at 850 g/ha is now very expensive at $17/ha. A possible alternative is 2,4-D amine, but medics are very sensitive to this. 2,4-DB is another recommendation, but this tends to have low efficacy against doublegees and …
Glean Use On Drier Alkaline Soils, Terry Piper, Patrick Piggott
Glean Use On Drier Alkaline Soils, Terry Piper, Patrick Piggott
Experimental Summaries - Plant Research
Trial 86SG25 - Salmon Gums Research Station
There was no apparent evidence of chlorsulfuron carryover at either site, although the medic stand was visually assessed as thinned on 19/8/1987. In the absence of grazing pressure however, the remaining plants compensated by 25/9/1987.
Trial 87WH64 : The effects of low levels of Glean on lupins, in the presence of Hoegrass or Fusilade. Wongan Hills Research Station
This trial is a duplicate of 86WH53 and the results can be considered together.
Statistical analysis has shown a very highly significant effect of Glean on lupin growth in 1987, and on seed yield in …
Trace Element Nutrition. Tissue Testing Programme 1987, R. F. Brennan
Trace Element Nutrition. Tissue Testing Programme 1987, R. F. Brennan
Experimental Summaries - Plant Research
Project title: Evaluation of existing diagnostic procedures for the recommendation of trace element fertilizers.
Aim: To compare the accuracy and reliability of a range of tissue and soil tests being variously promoted for use to farmers for the diagnosis and prognosis of zinc and copper deficiencies in wheat crops on Western Australian farms.
Trial 87N23
Nitrogen rates on the main copper plots of the long term copper residual trial at Newdegate Research Station.
Location: Newdegate Research Station
To determine the effects of rates of nitrogen on the copper status of plants.
Trial 87LG33
Effects of rates of nitrogen on the …
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, V Chisholm, A Pelham
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, V Chisholm, A Pelham
Experimental Summaries - Plant Research
Contents
A. Crop establishment methods for lupin disease management
1. Pleiochaeta root rot
1.1 Depth of sowing
87LG32, 87LG36, 87ME60, 87ME75
1.2 Cultivation and sowing depth
87WH47, 87NO77, 87M54
1.3 Seeding machinery and sowing depth
2. Brown leaf spot/Pleiochaeta root rot
Phosphorus nutrition and crop rotation
87ME62, 87LG39
3. Rhizoctonia hypocotyl rot
Fungicide seed treatment and sowing depth
87BA25
4. Rhizoctonia root rot
4.1 Cultivation and sowing depth
87NO74
4.2 Fungicide seed treatment
87NO78
B. Fungicide drench trials to determine casual organisms of root/hypocotyl rot 87NO75, 87NO76.
Lime Application To Acid. Yellow Eastern Wheatbelt Sandplain Soils, W Porter, S Carr
Lime Application To Acid. Yellow Eastern Wheatbelt Sandplain Soils, W Porter, S Carr
Experimental Summaries - Plant Research
Testing soil acidicity in the wheatbelt.
80M30, 80M31, 86M11, 8814E4, 85M48
Effects Of Rates Of Nitrogen On The Copper And Zinc Concentration And Grain Yield Of Wheat Plants Grown On Old Land (Previous Copper, Zinc History Known), R. F. Brennan
Experimental Summaries - Plant Research
To examine the possibility of rates of nitrogen inducing copper and zinc deficiency in wheat.
87LG33 Location: L. Slake; Lake Grace
Gypsum Use In The Wheatbelt, M R. Howell
Gypsum Use In The Wheatbelt, M R. Howell
Journal of the Department of Agriculture, Western Australia, Series 4
One of the limitations to crop productivity in the wheatbelt is the poor structure of heavy textured soils. Many years of clearing and cultivation have caused the loss of soil organic matter and breakdown of soil aggregates - particles of sand, silt and clay - in the surface layers. This has led to the development of unstable soils with poor physical properties.
Although loss of soil structure is a serious problem, it can be reversed by altering the tillage practices that caused the problem. This improvement in soil structure and return to productivity can be a slow process. However gypsum …
Trial 66m29, I Rowland., W Hawkins
Trial 66m29, I Rowland., W Hawkins
Experimental Summaries - Plant Research
Trial 66M29. Location Merredin sandy clay loam. Response to nitrogen.
An old land site, cleared in 1909. First sown to Cyprus Harrel medic in 1955, grazed and topdressed. Cropped, 1962 and 1964. Medic resown in 1965.
Effect Of Agronomic Practices On Wheat Protein Levels, M G. Mason
Effect Of Agronomic Practices On Wheat Protein Levels, M G. Mason
Journal of the Department of Agriculture, Western Australia, Series 4
High grain protein levels are preferred for many end-uses of wheat. However, there has been little or no incentive for farmers to use practices which would increase protein levels, because wheat payments are made without a price differential for proteinlevel, except where wheat could qualify for the Australian Hard grade.
Experimental Summary 1987, T N. Khan, M Judges, K Young, R Loughman, P A. Portmann, R Gilmour
Experimental Summary 1987, T N. Khan, M Judges, K Young, R Loughman, P A. Portmann, R Gilmour
Experimental Summaries - Plant Research
Barley
II. Scald and mildrew : Seed dressings and sprayings
(87E26, MT37 and MT38)
III. Scald and mildew : Seed dressing and fungicide coated superphosphates. (87E27, MT39, MT40 and WH40)
IV. Scald and mildew : Fungicides for longer protection (87ES38 and MT41)
V. Mildew : Survey of virulence genes (87ES46, MT56 and PE22)
VI. Spot-type net blotch : Potential crop losses (87C49 and C55)
VII. Spot-type net blotch : Effect of seed dressings (87C49 and C55)
VIII. Spot-type net blotch : Parent-offspring regression (87C51 and C56)
IX. Leaf stripe : Effect of seed dressings (87M42, MT33 and NA74)
Peas
X. …
Sheep Production Systems On Mediterranean Annual Pastures., Department Of Agriculture, Western Australia.
Sheep Production Systems On Mediterranean Annual Pastures., Department Of Agriculture, Western Australia.
Experimental Summaries - Plant Research
Trial 84V2.
Location: Vasse Research Station
Aims: To define seasonal pasture production curves for three rainfall zones in Western Australia. To determine animal productivity under different production systems in response to seasonal pasture production. To provide Western Australian data useful for validation of sheep simulation models. To provide data for different production systems to increase the scope of the simulation models.
Trial 73sg16, I Rowland, W E. Hawkins
Trial 73sg16, I Rowland, W E. Hawkins
Experimental Summaries - Plant Research
Trial 73SG16. Location - Lease block, Salmon Gums
The site was cropped in 1971 and 1972 after two years of volunteer pasture, mainly grasses and some wild legumes (Goldfields medic and wooly clover). In 1973 the trial started with pasture being sown to a mixture of Harbinger, Cyprus and Tornafield medics. The Harbinger quickly became the dominant species
Developing A Soil Test For Wodgil Soils In The Eastern Wheatbelt., S Carr
Developing A Soil Test For Wodgil Soils In The Eastern Wheatbelt., S Carr
Experimental Summaries - Plant Research
Trial 87ME77
Location: Eastern Wheatbelt.
One of the better sites in terms of productivity. This site was sown at two times, initially 4 reps were sown but as it was very dry the remaining 8 reps were sown after additional rain. This split seeding did not seem to adversely affect the trial
Trial 87ME78
Location: Eastern Wheatbelt.
A poor site, towards the middle of the range of the ten sites sown. The very high basal N and P fertilizer applied
Population Dynamics Of Brome Grass In Relation To Control Systems, A H. Cheam, Stephen Lee, C. M. Ralph, P Nelson
Population Dynamics Of Brome Grass In Relation To Control Systems, A H. Cheam, Stephen Lee, C. M. Ralph, P Nelson
Experimental Summaries - Plant Research
Trial 86C1
Location: East Chapman Research Station.
To identify the level of control of brome grass under various crop rotation systems so that farmers can be advised on the degree of infestation likely to be encountered when using a particular system.
To design the best control system to reduce quickly the anticipated large seed population of brome grass in the soil.
Medic Cultivar Resistance To Phoma Blackstem Disease., M. J. Barbetti
Medic Cultivar Resistance To Phoma Blackstem Disease., M. J. Barbetti
Experimental Summaries - Plant Research
Location: Katanning, South Perth, Denmark, Kerridale, Woogenelllup, Mount Barker Research Station, Seaton Park, Esperance, Daliak, Dinninup, Green Range, Yarloop, Jerramungup and Corrigin.
Trial 87KA11
To screen medic lines for resistance to Phoma blackstem disease (caused by the fungus Phoma medicaginis)
Trial 87GL8 : Screening medics for Phoma blackstem resistance.
To develop a reliable glasshouse screening technique for assessing levels of resistance to Phoma blackstem disease in Medicago line.s. To compare these glasshouse obtained results with disease resistance scores for the same Medicago lines sown in the field at Katanning.
Trial 87KA10 : Fungicidal control of Phoma blackstem disease of medics. …
Cereal Cyst Nematode And Time And Method Of Sowing Wheat, J M. Stanton, M Sartori
Cereal Cyst Nematode And Time And Method Of Sowing Wheat, J M. Stanton, M Sartori
Experimental Summaries - Plant Research
87NO13, 87NO15, 87JE6, 87NA93, 87NA93, 87NA97, 86KA82.
Assessment Of 2nd Generation Acid Tolerant Strains Of R. Meliloti, J G. Howieson, S Scarfe, R Forest
Assessment Of 2nd Generation Acid Tolerant Strains Of R. Meliloti, J G. Howieson, S Scarfe, R Forest
Experimental Summaries - Plant Research
86M56, 86GE29, 87M83, 87M13, 87H12, 87M15, 86N32.
Foliar Wheat Diseases And Cereal Smuts And Control Of Pleiochaeta Setosa In Lupins., R Loughman, G Thomas, G Cusack, M Sweetingham, S Porritt, A Pelham, V Chisholm
Foliar Wheat Diseases And Cereal Smuts And Control Of Pleiochaeta Setosa In Lupins., R Loughman, G Thomas, G Cusack, M Sweetingham, S Porritt, A Pelham, V Chisholm
Experimental Summaries - Plant Research
Disease complexes in field screening trials. Glasshouse screening for resistance. Reinfection of barley loose smut. Barley loose smut – varietal susceptibility. Seed dressings for barley loose smut. Seed dressings for barley leaf stripe. Seed dressings for molybdenum application and fungicidal control of soil-borne flag smut. Chemical control of Pleiochaeta setosa in lupins. Effect of cereal stubble and seed dressing fungicide on brown leaf spot (P. setosa) in lupins. Stubble retention and Rovral for control of P. setosa in lupins. Fungicide sprays for control of P. setosa in lupins. Data summary for chemical trials.
Broadacre Pest Control After Ddt, P J. Michael
Broadacre Pest Control After Ddt, P J. Michael
Journal of the Department of Agriculture, Western Australia, Series 4
DDT may no longer be applied to broadacre crops grown in Western Australia. It is being replaced by other more effective chemicals and with new methods of pest control. DDT was the most effective chemical for the control of several major broadacre pests in this State and farmers may well wonder why this change was necessary and how they will manage without DDT.
Experiments On Grain Yield In A Range Of Old And Modern Wheat Varieties., K. H.M. Siddique, D. Tennant, R. K. Belford, M. W. Perry, L. Mclaughlin, A. R. Thompson
Experiments On Grain Yield In A Range Of Old And Modern Wheat Varieties., K. H.M. Siddique, D. Tennant, R. K. Belford, M. W. Perry, L. Mclaughlin, A. R. Thompson
Experimental Summaries - Plant Research
Growth, yield, water use and water use efficiency of old and modern wheat varieties in a mediterranean type environment, 87M17 and 87WH14. Ear and stem dry matter at anthesis and grain yield in a range of wheat varieties, 87M18.
The Role Of Barley In Future Rotational Systems In Drier Wheatbelt Areas Of Western Australia., P. Simpson
The Role Of Barley In Future Rotational Systems In Drier Wheatbelt Areas Of Western Australia., P. Simpson
Experimental Summaries - Plant Research
Comparison of barley and wheat yields over four soil types and yield component analysis at Nangeenan NW of Merredin, 86ME88, 86ME89, 86ME90 and 86ME91. Comparison of barley and wheat yields over four soil types at Bodallin, east of Merredin, 86ME92, 86ME93, 86ME94 and 86ME95. Comparison of barley and wheat yields over two ‘levels’ of soil salinity - EC, 87ME63 and 87ME64. Comparison of barley and wheat yields over 2 soils of differing textural type – ‘heavy’ and ‘light’, 87ME65 and 87ME66. Effect of time of sowing on barley and wheat yields, 87ME67.
Productivity Of Grazed Legume Pastures., Pasture Agronomy Branch
Productivity Of Grazed Legume Pastures., Pasture Agronomy Branch
Experimental Summaries - Plant Research
86MT51, 86MT55, Mt Barker research station. Aim, treatment, detail, results.
The Effect Of Sodium Chloride On Boron Toxicity In Barley., M M. Riley
The Effect Of Sodium Chloride On Boron Toxicity In Barley., M M. Riley
Experimental Summaries - Plant Research
To examine the effects of salinity on the uptake of boron and the growth of barley.
87GL3a/4864
Trial 68e5, I Rowland., W E. Hawkins
Trial 68e5, I Rowland., W E. Hawkins
Experimental Summaries - Plant Research
Trial 68E5. Location paddock N1A on Esperance Downs Research Station (Gibson). Long term rotation trials.
Cleared in 1951 and sown to clover, cropped in 1961 and 1962 then Woogenellup sub clover and Brome grass were sown in 1963, topdressed until the start of the trial in 1968. Lupins were sown in trial in 1974. Esperance sub clover has been established on all plots.
Phosphorus Levels And Disease On Lupins, J W. Bowden
Phosphorus Levels And Disease On Lupins, J W. Bowden
Experimental Summaries - Plant Research
Trial 87LG39 (81LG29) 87ME62
Location: Pingaring.
It has been suggested that high levels of phosphorus application to lupins can reduce the impact of leaf and root diseases. Two old rotation trials provided a range of disease burdens, across which phosphate rates on lupins were applied. Disease scores, vegetative yields, phosphorus concentration and seed yields were measured.
(Details in Mark Sweetingham's report)
To Effects Of Rates Of Phosphorus And Nitrogen On The Copper And Zinc Status Of Wheat Plants And Grain Production., R F. Brennan
To Effects Of Rates Of Phosphorus And Nitrogen On The Copper And Zinc Status Of Wheat Plants And Grain Production., R F. Brennan
Experimental Summaries - Plant Research
To examine the possibility of rates of nitrogen and phosphorus inducing copper and zinc deficiency in wheat.
87E30
Winter Waterlogging Effects On Crops And Pasture Production., D. J. Mcfarlane
Winter Waterlogging Effects On Crops And Pasture Production., D. J. Mcfarlane
Experimental Summaries - Plant Research
Trial 87NA76
Location: Dryandra, Rosendale Central, Tutanning, Yornaning South, Yornaning West
To quantify the physical extent and economic significance of winter waterlogging on crop and pasture production in the Upper Great Southern Region of Western Australia.
Nitrogen Rates On The Main Copper Plots Of The Long Term Copper Residual Trial At Newdegate Research Station, R F. Brennan
Nitrogen Rates On The Main Copper Plots Of The Long Term Copper Residual Trial At Newdegate Research Station, R F. Brennan
Experimental Summaries - Plant Research
Trial 87N23
Location: Newdegate Research Station.
To determine the effects of rates of nitrogen on the copper status of plants.
High Input Barley Production Systems In The High Rainfall Zone., G. J. Parlevliet
High Input Barley Production Systems In The High Rainfall Zone., G. J. Parlevliet
Experimental Summaries - Plant Research
Barley systems in the high rainfall zone effect of nitrogen fungicides and seeding rate on barley yield, 87BR2.
Trial 86c63 Rotation, Deep Ripping And Water Use And Trial 87ge97 Cereal Management Trials, J. Hamblin, R. Delane, Glenn Adam
Trial 86c63 Rotation, Deep Ripping And Water Use And Trial 87ge97 Cereal Management Trials, J. Hamblin, R. Delane, Glenn Adam
Experimental Summaries - Plant Research
To examine the value of a package approach to growing cereals in the northern agricultural region. Treatments included planting date , species (wheat v barley) and variety (differing in maturity), as well as deep ripping and fungicide spray.
87GE97
To examine the effect of different rotational histories, particularly residual water, on following crops. Barley, wheat, lupins, medic.
86C63