Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 31 - 60 of 247
Full-Text Articles in Physical Sciences and Mathematics
Ecology And Control Of Grass Weeds In Cereal Pasture Rotations In The Great Southern Region., A. Wallace
Ecology And Control Of Grass Weeds In Cereal Pasture Rotations In The Great Southern Region., A. Wallace
Experimental Summaries - Plant Research
Silvergrass control.
Trial 90AB11
Location: Great Southern Agricultural Research Institute - Katanning.
The site was an established silvergrass dominant pasture on a light sandy soil.
Trial 90KA95
Location: Great Southern Agricultural Research Institute - Katanning
The site was an established silvergrass dominant pasture on a medium clay soil.
Trial 90KA96
Location: Great Southern Agricultural Research Institute - Katanning
The site was an established silvergrass dominant pasture on heavy (Moort type) clay soil.
Simazine was found to be very active against silvergrass on the light sandy site and all rates applied gave complete control. There were some late germinations which enabled …
Weed Control In Crops And Pasture., J. Buckley
Weed Control In Crops And Pasture., J. Buckley
Experimental Summaries - Plant Research
Trial 90WH74
Crop establishment trial
Location: Wongan Hills Research Station.
To assess the effect of timing of roundup and sprayseed application and cultivation on crop growth.
Trial 90AB19
Ryegrass control in wheat using slow release trifluralin.
Location: Katanning.
To compare 2 experimental formulations of controlled release trifluralin at 4 rates and 2 timings with some commonly used herbicides for the control of ryegrass in wheat.
Trial 90ME84
Early application of 2, 4-D to wheat.
Location: Corrigin.
To assess the use of 2,4-D.amine at early times of application for the control of broadleaf weeds in wheat.
Trial 90WH92
Early application of …
Virus Diseases Of Subterranean Clover., R. A. Jones
Virus Diseases Of Subterranean Clover., R. A. Jones
Experimental Summaries - Plant Research
a) Effect of alfalfa mosaic virus infection on productivity of spaced plants.
Location: South Perth.
Spaced plant trials were done with AMV-EW isolate. Young plants of sub. clover cv. Daliak growing in jiffy pots were inoculated with AMV- containing sap or mock-inoculated with healthy sap and then transplanted onto the South Perth plots in paired rows separated by oat buffer rows.
b) Effect of Bean Yellow Mosaic Virus on productivity of grazed swards. (90MT14).
Location: Mt Barker.
A trial was done to examine the effect of BYMV infection on productivity of grazed subterranean clover swards.
c) Persistence of CMV from …
Declared Plants - Biology, Ecology And Biocontrol., J. Dodd
Declared Plants - Biology, Ecology And Biocontrol., J. Dodd
Experimental Summaries - Plant Research
Trial 90PE26
Effect of the leaf-mining moth, Dialectica scalariella, on development and seed production of Paterson's Curse, Echium plantagineum.
Location: Jane Brook (Swan Valley)
The aim of the trial was to reveal the effect of the leaf-mining moth on the growth and reproductive output of Paterson's curse. The trial was conducted at Jane Brook (Swan Valley), a site heavily infested with the moth.
Trial 89PE8
Establishment and spread of the leaf-mining moth.
Location: Perth, Avon Valley, Northam, York, Chittering Shire.
The progress of winter 1989 releases of the leaf-mining moth was monitored by inspecting release sites in October 1989, when …
Ecology And Control Of Brome Grass In Cropping Systems., Christine Zaicou
Ecology And Control Of Brome Grass In Cropping Systems., Christine Zaicou
Experimental Summaries - Plant Research
1. Assessment of the timing and increasing rates of ethiozin on brome grass control and wheat yield.
Trial 90EC16, 90GE115,
Control of brome grass in wheat using Ethiozin applied immediately before the following seeding and post-emergence.
Location: East Chapman Research Station, Allanooka
Incomplete factorial with three replications.
Unfortunately, further research and development of ethiozin has ceased world wide. It has suggested a result of limited activity on target weeds other than brome grass and economics.
2. Evaluation of pine kraft lignin with metribuzin and their incorporation, on wheat yield and brome grass control.
Trial 90EC18
Evaluating pine kraft lignin (PKL) …
Serradella Evaluations, L. Cransberg
Serradella Evaluations, L. Cransberg
Experimental Summaries - Plant Research
Trial 85AL56
Location: South Sterlings.
Serradella line evaluation - Stage 3.
To evaluate five promising lines selected from variety trials, in terms of herbage production and long term persistence.
Trial 88AL32
Location: Walpole.
Long season serradella evaluation.
To select productive and persistent serradella lines for the deep acidic sands in the very high rainfall zone on the south coast.
Trial 88AL31
Location: Takalarup.
Ryegrass species evaluation.
To investigate the potential of a range of ryegrasses, from short term to long term perennial, in the south coast environment.
Grass species evaluation
Location: Greenrange.
To identify both productive and persistent grasses for …
Tactical Nitrogen Decisions For Wheat (And Nitrogen Sources Rates And Times On Wheat), J. W. Bowden, R. J. Lunt
Tactical Nitrogen Decisions For Wheat (And Nitrogen Sources Rates And Times On Wheat), J. W. Bowden, R. J. Lunt
Experimental Summaries - Plant Research
Trial 89MO49
Location: Tenderloin, Brand Highway, Regan's Ford.
History:
1987 Aroona wheat with 70 kg DAP and 3 kg CuSO4 at seeding followed by 60 urea at 3WAS and another 40 urea at 6WAS. Yield was about 1.7 to 1.8 t/ha;
1988 Gungurru lupins with 120 kg super and manganese/ha yielded 1.9 t/ha. 350-400 ml Roundup/ha and one cultivation prior to seeding.
Rhizoctonia Control In Potatoes And Potato Resistance To Powdery Scab., R M. Floyd
Rhizoctonia Control In Potatoes And Potato Resistance To Powdery Scab., R M. Floyd
Experimental Summaries - Plant Research
Trials : 88BY26, 88PE34, 88MD35
Control of Rhizoctonia solani infection of potato stems and daughter tubers was demonstrated by preplanting applications of tolclofos-methyl (RIZOLEX TM) to either cut or round seed tubers. Yield of tubers from cut seed treated with Rizolex was increased over that of cut seed cured before planting bu not when seed was cut and planted the same day. Crops grown from round seed treated with Rizolex yielded higher than from untreated round seed.
Surface sterilization of seed tubers with Sodium hypochlorite was effective in reducing stem damage but not in reducing daughter tuber sclerotes. This indicates …
Factors Affecting Lupin Crop Establishment In The Northern Agricultural Region Of Western Australia., K W. Mccarthy, A M. Doswell, R J. Delane, M W. Sweetingham
Factors Affecting Lupin Crop Establishment In The Northern Agricultural Region Of Western Australia., K W. Mccarthy, A M. Doswell, R J. Delane, M W. Sweetingham
Experimental Summaries - Plant Research
Lupin establishment, 89EC6. The effect of machine, depth of sowing, seed soil contact and herbicide incorporation on lupin establishment, 89GE8. The effect of phosphate application on lupin establishment, 89GE99. The effect of seeding technique, depth of sowing, seed soil contact and fungicide on lupin establishment on course sands, 89GE9. Integrated control strategy of Rhizoctonia hypocotyl root rot of lupins, 89GE11, 89GE12, 89GE12B, 89GE13, 89GE14. Strategies for lupin patch control, 89EC7 and 89GE15. The effect of seed size and sowing rate on lupin establishment, 89C1, 89GE6, 89GE7, 89EC5, 89BA34, 89TS49, 89GE10, 89EC4, 89GE4,
Systems For Early Sowing Of Wheat In Low Rainfall Zones., N J. Kerr
Systems For Early Sowing Of Wheat In Low Rainfall Zones., N J. Kerr
Experimental Summaries - Plant Research
Background and early significance. Effect of sowing date and nitrogen fertilizer on wheat varieties in low rainfall areas, 89GE76, 89GE77, 89NM1, 89GE78, 89NM2, 89NM3, 89GE78. Tillage and sowing methods for early sowing of wheat in low rainfall areas, 89GE79. Aims, Background, Experimental details.
Pasture Agronomy., C. K. Revell
Pasture Agronomy., C. K. Revell
Experimental Summaries - Plant Research
Trial 89ME82
a. Medic establishment.
Establishing burr medic pastures with cereal cover.
Merredin
Trial 89SC19
b. Serradella - Potash response.
Response of serradella to potash fertilizer.
South Carrabin
Trial 89M44
c. Serradella/Grass competition
Effect of grass competition on production of serradella.
Merredin Research Station.
Trial 89SC HERB
d. Herbicide tolerance of Serradella.
Herbicide tolerance of Madeira serradella.
South Carrabin
The Grazing Value Of Medicago Murex., C. M. Saunders
The Grazing Value Of Medicago Murex., C. M. Saunders
Experimental Summaries - Plant Research
Trial 88KA92
Location: Potts Road, East Kojonup.
At present, limited information is available on the grazing value of Medicago murex cv. Zodiac on sheep live weights and wool growth. This trial was designed to provide data on the relative performance of sheep grazing Zodiac compared with the recommended subterranean clovers (Junee/Seaton Park) in the > 450mm rainfall zone in WA.
Legume Species Mixtures., C. M. Saunders
Legume Species Mixtures., C. M. Saunders
Experimental Summaries - Plant Research
Trial 86KA64 - ironstone hardsetting clay pH 8.0
86KA65 - orange/red loam pH 7.0
86KA66 - sandy gravel pH 5.6 - 5.7
Location: Dumbleyung.
Current recommendations for pasture species in the medium rainfall zone has not included species mixtures for paddocks with varying soil types. These trials (three in total) are designed to test the hypothesis that legume species mixtures are more productive and persistent in the long term than monocultures, across three soil types and three different cropping/pasture rotations (continuous pasture, 1 year pasture : 1 year crop rotation, 2 years pasture : 1 year crop rotation).
Cultivar Evaluation On Low Rainfall Heavy Textured Soils., Bradley Nutt
Cultivar Evaluation On Low Rainfall Heavy Textured Soils., Bradley Nutt
Experimental Summaries - Plant Research
a. Trial 88GE34
Cultivar evaluation in machine sown plots.
Location: NMRS
The higher seed yield of Serena compared to the other cultivars resulted in better early forage .production as well a legume dominated pasture.
b. Trial 88TS 63 and 88TS 65
Wheat yields following pastures.
Location: 88TS63 - Perenjori and 88TS65 - Three Springs.
There was no response to nitrogen in either biological yield or grain yield of wheat sown over volunteer based pasture at the Three Springs site. All pasture treatments resulted in similar wheat yields except for Sava because of poor control of the snail medic under the …
Tactical Nitrogen Decisions For Wheat (And N Rates Trials), J. W. Bowden, R. J. Lunt
Tactical Nitrogen Decisions For Wheat (And N Rates Trials), J. W. Bowden, R. J. Lunt
Experimental Summaries - Plant Research
Trial 89NO77 (89NO76)
Location: Grass Valley.
History: 1984 Lupins.
1985/86 pasture legumes and about 100 kg super/ha.
1987 Wheat yield of 2.8 t/ha using 45 kg DAP/ha and 60 of urea 2-4 WAS.
1988 Gungurru lupins (27 kg/ha seed) yielding 1.9 t/ha using 80 kg super/ha.
Tactical nitrogen trials - summary of treatments required.
Trial 89NO77
Location: Meckering
Treatments existed of nitrogen and urea. Nitrogen was not applied at seeding. Urea was applied at seeding.
Trial 88No77
Tactical nitrogen trials. - summary of observations.
Location: Grass Valley.
Trial 89NO76
Hand harvest 23/11/1989.
Yield components for copper sufficient plots reps. I …
New Block Badgingarra Rs Late Time Of Seeding., J. W. Bowden, R. J. Lunt
New Block Badgingarra Rs Late Time Of Seeding., J. W. Bowden, R. J. Lunt
Experimental Summaries - Plant Research
Trial 89BA33,
Location: Badgingarra
Based on a 1.5 t/ha potential yield, the strategic treatment was planned to be 120 kg urea/ha 4WAS. However, the crop was poorly established and so NH4NO3 was used in the hope of getting better tillering than would be possible with the slower release urea source. Gambling on equal dollars to urea for 2/3 N, but believe that twice as effective.
DAP was used to place nitrogen with the seed in case there was no rain of significance after seeding. This nitrogen (only 5 kg/ha) was probably lost with the rains of 20-28/7/89 (50 mm). Urea …
Selection And Development Of Early Maturing Varieties Of Murex Medic., D. J. Gillespie
Selection And Development Of Early Maturing Varieties Of Murex Medic., D. J. Gillespie
Experimental Summaries - Plant Research
Trial 88A25, 88MO44, 88NA83, 88AL15
Location: Avondale, New Norcia, Darkan, Cranbrook, Arthur River, Kellerberrin North Quairdading, Gabalong, Merredin, Badgebup and Pingrup.
Over 300 recent overseas introductions of murex medic were evaluated in rows at South Perth in 1988. Of these 15 selections were identified with acceptable spinniness that flower in 100 days or less. Four years ago there was only one selection flowering in under 110 days and that was spiny!
These selections will be evaluated in small plot trials in several country sites in 1989.
This programme aims to identify superior varieties to Zodiac which was released in 1988.
Dryland Pasture Legume Programme, C. K. Revell, G. Croker, J. Simmons, L. Heinrich
Dryland Pasture Legume Programme, C. K. Revell, G. Croker, J. Simmons, L. Heinrich
Experimental Summaries - Plant Research
1. Medic variety evaluation
a. Row Evaluation - 88ME122 - Merredin.
This method of assessment was used to test a range of new medic material originating from the South Australian Department of Agriculture.
b. Evaluation of burr medics on Morrel soils. - 88ME84 - Nokaning.
c. Evaluation of burr medics on Whitegum soils. 88ME85 - North Kellerberrin.
d. Evaluation of Santiago in low rainfall areas - 88ME86 - Mukinbudin.
e. Selection of early maturing M. murex. 88SC30 - Merredin.
f. Medic species evaluation - large plots. 88NO88 - Tammin.
g. Medic species evaluation - large plots. 85M43 - Merredin Research …
Depth-Controlled Modified Combine For Direct Drilling And Lupin Row Spacing., R. Belford, G Reithmuller
Depth-Controlled Modified Combine For Direct Drilling And Lupin Row Spacing., R. Belford, G Reithmuller
Experimental Summaries - Plant Research
Trial 87WH52, (86M56)
Depth-controlled modified combine for direct drilling.
To compare soil penetration resistance, crop growth, water use, nutrient uptake and root development of wheat 1) sown after scarifying; 2) direct drilled with a combine; 3) direct drilled with the depth-controlled modified combine with loosening ties at 5, 9 or 13 cm; or 4) sown after deep ripping with an Agrowplow to 13 or 30 cm.
Trial 87M82
Location: Merredin Research Station paddock T6 south.
Lupin row spacing
Rapeseed, Tillage., J. D. Warren, Brenda Shackley
Rapeseed, Tillage., J. D. Warren, Brenda Shackley
Experimental Summaries - Plant Research
1. Rapeseed. Assessment of Early Maturing Brassica napus Lines 87KA74, 87LG42, Assessment of Early Flowering Brassica juncea Lines 87KA44, 87E41, 87LG38, 87KA44, 87LG38, Yield Performance of Traizine Resistant Rapeseed 87AL25, 87E40, 87KA42, 87KA42, 87LG37, 87MA32, Assessment of Short Statured B. napus lines 87AL26, 87KA43, 87MA33, Rapeseed Extension: Demonstration Trials 87ERS39, 87JE29, 87KA41, 87NA78. 2. Tillage. The effect of Gypsum, tillage and nitrogen on cereal yields in a continuous crop system 84KA28 The effect of Gypsum, tillage and nitrogen on cereal yields farm system with a medic component 87KA47 Pasture regeneration counts for tillage trials 77MT51, 77M56, 77WH88, 82M35, 85M67A, 86M56.
Evaluation Of New Pasture Legume Species In Terms Of Summer Feeding Value And Effects On Wool Production., S E. Flecker, C W. Thorn, J. B. Rowe, Tess Casson
Evaluation Of New Pasture Legume Species In Terms Of Summer Feeding Value And Effects On Wool Production., S E. Flecker, C W. Thorn, J. B. Rowe, Tess Casson
Experimental Summaries - Plant Research
86KA71, Pasture legumes improve the feeding value of summer pastures in a mediterranean-type environment by maintaining the protein intake of grazing animals over the dry summer period, much of which comes from the ingestion of legume burr (A.D. Wilson and N.L. Hindley, 1968). Some of the most important species of pasture legumes to have been released commercially are Trifolium subterraneum (sub.clover), Medicago truncatula (barrel medic) and Medicago polymorpha (burr medic) (D.B. Purser, G.B. Taylor and W.J. Collins, 1987). What little information is available on the feeding value of these species suggests that barrel medic pod (H. Brownlee, 1973) and dry …
Trial 65sg5, I Rowland., W Hawkins
Trial 65sg5, I Rowland., W Hawkins
Experimental Summaries - Plant Research
Trial 65SG5. Location - Paddock H5 on Salmon Gum Research Station
Cleared in 1962, then cropped until the start of the trial in 1968. Two of the four blocks were sown to Cyprus Barrel medic which is topdressed with superphosphate. The other two blocks regenerate volunteer pasture which is not topdressed. In 1984 all pasture plots were sown to SERENA medic. This grew exceptionally well in 1984 and set a lot of seed. In 1987 field peas were introduced into 4 reps of an existing medic: crop rotation.
Trial 80na6, I Rowland., W Hawkins
Trial 80na6, I Rowland., W Hawkins
Experimental Summaries - Plant Research
Trial 80NA6. Location - B. Harrington, 6 km west of Darkin.
Cleared 1962, cropped 1977 (oats), 1978 (oats and Lupins), pasture in 1979. Continuously cropped to cereals up to 1986, then changed to wheat after wheat, lupins or clover.
Agronomy Of Wheat Cultivars., W. K. Anderson, M. Seymour
Agronomy Of Wheat Cultivars., W. K. Anderson, M. Seymour
Experimental Summaries - Plant Research
Location: Northam, Wongan Hills, East Beverley, Corrigin and Merredin.
Time of sowing x wheat cultivars, 87N07, 87N011, 87WH7, 87NA4, 87M11. Time of sowing x wheat cultivars.
Nitrogen rates x wheat cultivars, 87N05, 87N09, 87WH5, 87NA2, 87M9.
Seed rates x wheat cultivars, 87N06, 87N010, 87WH6, 8JNA3, 87M10.
Wheat cultivar factorial, 87N04, 87N08, 87WH4, 87NA1.
Tillage Investigations., R. J. Jarvis, L. G. Butcher, L. D.J. Smith
Tillage Investigations., R. J. Jarvis, L. G. Butcher, L. D.J. Smith
Experimental Summaries - Plant Research
77A16, red/brown sandy loam - York gum. 77WH17, yellow clayey-sand (Wongan loamy sand). 77M13, red sandy clay loam (Salmon Gum, Gimlet). 77Mt15, gravelly loamy sand/sandy loam - forest soil. 77A43 brown loamy sand/sandy loam - jam country. 77WH88, grey loamy sand over gravel at 50 cm - Elphin soil series – Mallee. 77M56, red sandy clay loam - salmon gum, Gimlet. 82M35, Loamy sand/sandy loam – Mallee. 77E52, fine white sand over gravel at 40 cm. 85SG28, grey-brown calcareous Earth - Kumarl – SGRS. 84M064, heavy land management systems - medium rainfall area. 84M063, heavy land management systems - ne …
Harvest Index Of Lupins, Low Tillering Cereals And Maturity By Sowing Date In Cereals., R. J. Delane, J. C. Mathews, J. A. Bright
Harvest Index Of Lupins, Low Tillering Cereals And Maturity By Sowing Date In Cereals., R. J. Delane, J. C. Mathews, J. A. Bright
Experimental Summaries - Plant Research
Trial 87GE21
Effect of plant density on branching, pod setting and yield development of lupins.
Location: Geraldton
To determine the influence of plant density and between-plant variability in vegetative growth on the branching, pod setting and yield development of lupins
Trial 87GE9
Chemicals to control vegetative growth and improve pod set in lupins.
Location: West Binnu
To examine the effect of a number of growth regulating chemicals on the branching, pod setting and yield of lupins under conditions favoring high biomass production.
Trial 87GE19
Chemicals to control vegetative growth and improve pod set in lupins.
Location: Nabawa
To examine the …
Crop Agronomy., S. Porritt
Crop Agronomy., S. Porritt
Experimental Summaries - Plant Research
Seeding machinery for stubble retention in lupin cereal rotations, 85LG21, and 85LG22. Dynamic Lifter (cereal mix) fertiliser evaluation, 86LG2. Cultural systems for lupin: wheat rotations on water repellent soils, 87ES2. Stubble retention and Rovral for brownspot control in lupins, 87M66. Straw length Effects on wheat growth on red-brown earths, 87M70. Row spacing and stubble retention effects on wheat growth on red-brown earths, 87M71. Nitrogen fertiliser for wheat production after volunteer pasture or sub clover-based pasture, 87ME73 and 87ME74. Effect of seeding rate and sowing depth on lupin establishment, 87ME75. Time of seeding various wheat varieties, 87WE76.
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.
Field Pea Agronomy., I. A. Pritchard, G. Cooper, D. Dodge
Field Pea Agronomy., I. A. Pritchard, G. Cooper, D. Dodge
Experimental Summaries - Plant Research
Field peas sowing rates, 87A31. Field peas time of sowing, 87A32. Field peas factional agronomy, 87A33. Field pea sowing rates, 87N092. Field peas time of sowing, 87N093. field peas - factorial agronomy, 87N094.
Wheat Experimental Results, S. P. Loss
Wheat Experimental Results, S. P. Loss
Experimental Summaries - Plant Research
The development of wheat relative to frost susceptibility, 87NA10. Optimum flowering times of wheat, 87NA11 and 87WH8. Grain growth and development of a historical set of wheats.