Physical Sciences and Mathematics Commons^™

Bazile Triangle Groundwater Quality Study, David C. Gosselin

Conservation and Survey Division

No abstract provided.

Deep Ripping, R. J. Jarvis

Experimental Summaries - Plant Research

Trial 88Ba11,12

Deep ripping at two depths in lupin/oat/wheat rotation on newish land.

Location: Badgingarra Research Station

Sited on the new block of Badgingarra Research Station, these trials aim at examining the response to new rippings each cereal year as well as the response over time to the residual effect of ripping. The rotation is the normal one applied on the Research Station.

Trial 89KO1

Location: Mount Barker Research Station.

Deep ripping for barley and lupins - Kojaneerup Block of MBRS.

Yields not significantly different by A.O.V., however lupin yield declined as the previous year's barley yield increased due to …

Urease Inhibitor Reduces Ammonia Loss From Surface-Applied Urea, Wilbur Frye, Lloyd W. Murdock, Robert L. Blevins

Soil Science News and Views

Urea is the world's leading N fertilizer, and its use continues to grow. In the USA, for example, the use of urea increased 50 fold from 1955 to 1986. During that same time, its use in Kentucky increased from 214 to more than 112,000 tons per year, which was 28% of the N used in Kentucky in 1986. The increasing popularity of urea is due to advantages over other N fertilizers in its manufacture and to its use in making most N solutions, another rapidly growing form of N fertilizer. Desirable qualities of urea include the highest N content of …

Effectiveness Of Two Lime Sources With Different Relative Neutralizing Values (Rnv), Greg Henson, Lloyd W. Murdock

Soil Science News and Views

Quality of agricultural lime (ground limestone) is an important factor in maintaining proper soil pH. The quality of lime is determined by its purity and fineness of grind. Purity is the amount of calcium and magnesium carbonate present in the limestone. Clay, silt, sand, organic matter, and other materials present in limestone rock dilute its purity. Since limestone is slowly soluble, it must be finely ground to be effective. The more finely ground the lime, the more rapidly it will dissolve in the soil.

Sulfur And Magnesium Trials With Wheat In West Kentucky, Monroe Rasnake

Soil Science News and Views

Interest in fertilizing wheat with sulfur and magnesium has increased recently in West Kentucky. This has been due primarily to positive test results in adjoining states and recommendations being made by some commercial people. Previous-testing in Kentucky has shown no response by wheat to sulfur, or to magnesium. However, in order to have current data on which to base recommendations, research plots were established in the fall of 1987 in Todd and Hopkins counties. They were repeated on different farms in 1988, making a total of 4 different sites studied.

Effectiveness Of Surface Application Of Phosphorus And Potassium On Yield Of No-Till Corn Grown On Soils Testing Low Or Medium Below A Depth Of 3 Inches, Grant W. Thomas

Soil Science News and Views

When crops are grown continuously under no-tillage or very minimum tillage, there is a tendency for phosphorus (P) and potassium (K) to become concentrated at or near the soil surface. This occurs when P and K fertilizers are broadcast on the surface and not mixed with the soil as would occur with plowing. The result is a stratification of P and K such that the surface few inches become very high in those nutrients, but soil test levels remain largely unaffected below that. The question is whether high yields of no-till crops can be obtained under these conditions.

Has The Nitrate-Nitrogen In Streams Draining Agricultural Watersheds In Kentucky Changed In The Last 18 Years?, Grant W. Thomas, Gerald R. Haszler, James D. Crutchfield

Soil Science News and Views

In 1971 and 1972, we sampled streams across Kentucky for nitrate-nitrogen (NO₃-N) during the high-water flow months of January through June. The results were variable and showed a dominant effect of geology and lesser effects of both time and land use on the results. Since that time, use of fertilizer nitrogen (N) has nearly doubled in Kentucky and, further, there is a high degree of concern among the public that NO₃-N from fertilizer use may be contaminating streams. The US Environmental Protection Agency has set a maximum of 10 ppm NO₃-N in water as …

The Effect Of Fall And Spring Tillage Of A Compacted Soil On Corn And Tobacco Yields, Kenneth L. Wells, Roy V. Catlett

Soil Science News and Views

Soil compaction is being diagnosed in increasing instances as the cause of poor crop performance in Kentucky. While the basic causes of compaction can usually be identified, it is much more difficult to prescribe techniques to solve the problem. Following identification of compacted soil as being the cause of poor corn growth in a field in Shelby County, Kentucky, a study was conducted to compare three tillage tools on production of corn and tobacco. The compacted zone was within the top 6-inch layer of soil.

Movement Of Triazine Herbicides In Conventional, Reduced Tillage, And No-Tillage Corn Production, William W. Witt, K. W. Sander

Soil Science News and Views

Herbicides are applied to over 90 percent of the corn acreage in Kentucky and triazine herbicides are used the most. Conservation tillage methods are often used to prevent soil erosion and to conserve soil water. However, as tillage is decreased the dependence on herbicides for weed control often increases. Minimizing herbicide movement from the application sites to non-target areas, such as ground and surface waters, is necessary to maintain optimum water quality.

Production Of No-Tillage Burley Tobacco, Jack M. Zeleznik, R. E. Phillips

Soil Science News and Views

In the early 1970's, researchers at the University of Kentucky produced burley tobacco by using no-tillage methods. These studies were abandoned a few years later due to poor growth, poor plant survival, and the lack of adequate weed control as the contributing factors. In 1984, the experimental production of no-tillage burley tobacco was reinitiated with the hopes that the newer herbicides would perform more effectively for no-tillage tobacco production. Burley producers could realize several potential advantages to no-tillage tobacco production if the yields produced by no-tillage were equal to or near those of conventional tillage. These potential advantages would include: …

Phosphorus Retention Of Sandy Horticultural Soils On The Swan Coastal Plain, Ian Mcpharlin, Neil Delroy, Bob Jeffery, Greg Dellar, Maurice Eales

Journal of the Department of Agriculture, Western Australia, Series 4

Soils can be ranked according to their phosphorus retention capacity by the phosphorus retention index (PRI). This is the ratio of phosphorus adsorbed by soil to that remaining in solution under a set of standard conditions. Although it is a laboratory measurement, the PRI seems to be a good indication of what happens in practice.

Phosphorus Nutrition., M. D. Bolland, M. J. Baker

Experimental Summaries - Plant Research

Evaluation of soil test for phosphate on sandy soils.

Results presented for this project, commenced in 1988, which started as a joint project between the Department of Agriculture and Soil Science and Plant Nutrition, School of Agriculture, University of Western Australia.

In the field experiments, 10 levels of superphosphate (three replicates) were applied in May 1988, and 10 levels of superphosphate (also three replicates) were applied in May 1989 onto an adjacent area to the 1988 treatments. Colwell P I(soil test values) and yield data are presented for 1988 and 1989 for the 1988 treatments layed out in 1988, and …

Phosphorus And Sulphur Nutrition Of Pastures In High Rainfall Areas., M. D. Bolland, M. F. Clarke

Experimental Summaries - Plant Research

J.S.Yeates and M.F.Clarke started these experiments. In January 1990 M.D.A. Bolland replaced J.S. Yeates (who became Regional Manager of the Northern Agricultural Region) as the Research Officer responsible for the management of the long-term experiments, and to continue the research on the topic.

In the experiments the fertilizers wee applied in autumn (March-April) in the years listed in the tables.

Trial 80AL4

Location: Cuthbert.

A new experiment was started in 1989 to compare two partially acidulated rock phosphate (PARP) fertilizers with ordinary (single) superphosphate (OSP).

Trial 84AL32

Location: Denmark

The fertilizers compared are ordinary (single) superphosphate (OSP). New (pre 1990) …

Rhizoctonia Bare Patch Of Cereals And Lupins. Sterile Red Fungus (Srf) And Control Of Take-All Disease In Wheat., G. C. Macnish

Experimental Summaries - Plant Research

Trial 86E31

Rhizoctonia strains and paddock history.

Location: Esperance Downs Research Station ( Paddock C5)

To determine the effects of pasture, cultivation and cropping on Rhizoctonia root rot, Rhizoctonia patch and distribution of patch and non-patch strains of R. spp

Trial 88E39

Rhizoctonia patch mini-plot establishment area.

Location: Esperance Downs Research Station ( Paddock N1B)

To examine the effects of cultivation and minimum tillage in patches in lupins and to provide sites for mini-plot experiment.

Trial 88KO15

Rhizoctonia bare patch establishment area.

Location: Kojaneerup annex.

To establish an area (with a known history) for future research.

Trial 89E12

Rhizoctonia bare …

Effect Of Pasture Species On Pasture Production And Following Cereal Yields On Heavy Textured Soils In Low Rainfall Areas. Regeneration Of Pasture Legume Cultivars On Low Rainfall Red Loam Soils., Bradley Nutt

Experimental Summaries - Plant Research

Trial 90GE17

Aphid tolerance evaluation in annual medics

Location: Tenindewa

Maturity and seed yields of annual medic lines with or with out aphid control using Pirmor.

Trial 90GE116

Evaluation of aphid tolerance in annual medics

Location: Tenindewa

Dry matter and seed yield of annual medic lines with and without aphid control using Pirmor.

Trial 90GE34

Effect of pasture species on pasture production and cereal yields on low rainfall red loams.

Location: North Mullewa Research Station, Morawa Agricultural School.

Regeneration of annual pasture cultivars on hardsetting red clay loams at North Mullewa and Morawa in 1989 and 1990.

Trial 88TS63

Effect …

Crop Management In Rows., R. Belford, G. P. Riethmuller, D. Tennant, D. Mcginnis, S. Mckeague

Experimental Summaries - Plant Research

Trial 87M71

Effect of row spacing and stubble retention on the yield of wheat.

Location: Merredin Research Station.

Treatments, site management and results from 1987, 1988 and 1989 have been described in previous experimental summaries. Four row spacings (9, 18, 27 and 36 cm) are compared in either burnt or stubble retained plots, on a red brown earth on the Merredin Research Station. There are six replicates laid out in a randomised block design.

Trial 90ME32

Effect of row spacing and variety on the yield of wheat.

Location: duplex site at Crooks (see 1989 Experimental Summary)

This trial was carried …

Deep Phosphate Banding., R. J. Jarvis

Experimental Summaries - Plant Research

Trial 90A1

Lupins sown 26/4. York gum/jam sandy loam 33 ppm bic. P. Wheat in 1989. Cultivation reduced yield (one pass banding points). Deep banding P overcame this reduction. No additional response to banding compared with TD or D. No response to P. Yield 2.0 t/ha.

Trial 90A2

Wheat sown 8/6. York gum/jam sandy loam 42 ppm bic. P. Lupins in 1989. All treatments had deep cultivation in the one pass. No response to deep band cf. drilled. 23% response to P. Top yield was 1.9 Oa.

88EB12 Wheat sown 5/6. Loamy grey sand/clay 27 ppm bic. P. Lupins in …

Long Term Minimum Tillage Investigations., R. J. Jarvis

Experimental Summaries - Plant Research

Trial 77M13

Location: Merredin

This site was in wheat in 1975 and 1976 before the treatments commenced on continuous wheat in 1977.

77M56

Location: Merredin

Sited alongside 77M13 with the same paddock history. Commenced the wheat/pasture rotation after wheat in 1975 and 1976.

Trial 86M79

Chemical and cultivated fallow in a pasture/wheat rotation on heavy land.

Location: Merredin.

At Merredin on salmon gum/gimlet soil. Pasture treatments and soil moisture measurements were conducted in 1990. Wheat 1991.

Trial 87NA80, 81, 82, 83

Direct drilling with modified combines compared with cultivation for pasture/wheat rotations with grass control treatments in the pasture year. …

Nitrogen Fertilizers For Cereals In Different Rotations., I. Rowland, M. G. Mason, W. Hawkins

Experimental Summaries - Plant Research

Trial 78B1

Nitrogen fertilizer requirement in alternate crop-pasture rotation.

Location: Badgingarra Research Station.

Soil type: Grey gravelly sand over gravel at about 15-20 cm.

History: Old clover land. All blocks were in clover pasture in 1977.

Trial 89WH19

Nitrogen fertilizer requirement in alternate crop-pasture rotation.

Location: Wongan Hills Research Station.

Soil type: Wongan yellow loamy sand

History: Old clover land. Whole area in clover 1988.

Trial 86WH36

Lupin/Wheat rotation

Location: Wongan Hills Research Station

Soil type: Wongan yellow loamy sand.

History: Cropped to wheat in 1985 on old clover land. Stubble of 1989 crop not burnt.

Trial 87NO84

Pea/Wheat Rotation …

Long-Term Rotation Trials., I. Rowland, W. Hawkins

Experimental Summaries - Plant Research

Trial 66M29

Location: Merredin Research Station.

An old land site, cleared in 1909. First sown to Cyprus Barrel medic in 1955, grazed and topdressed. Cropped, 1962 and 1964. Medic resown in 1965.

Trial 67C13

Location: Chapman Research Station

An old land site, cleared in 1903. Sown to Dwalganup sub clover in 1964, topdressed each year until the start of the trial in 1967. In 1981 to 83 all plots were reseeded with Northam at 20 kg/ha. In 1988 rotations were altered to allow inclusion of grain lupins, the following changes were made:

1. The 4 plots of 2 crop :2 …

Organochlorine Residues In Soil, Plant And In The Body And Wool Fat Of Wethers., Tony Albertsen

Experimental Summaries - Plant Research

Trial 5841

The accumulation and rundown of dieldrin in wethers.

Location: Brookhampton, Donnybrook, Jindong, Manjimup, Carbunup and Pemberton

The background, aims, experimental method, and the first years results and discussion have been reported in the 1989 experimental summary.

The latter phase of the study was continued until December 1990 on six of the sites (these were Brookhampton, Donnybrook, Jindong, Manjimup, Carbunup and Pemberton) with similar measurements being obtained at regular intervals. The sheep monitored during this phase were the 1989 Main mob and the 1989 Replacement mob.

Trace Element Nutrition., R. F. Brennan

Experimental Summaries - Plant Research

Trial 66N14

Long Term Copper Residual Trial

Location: Newdegate Research Station.

To determine the residual value of previously applied copper.

Trial 86N27

Residual Value of Zinc with DAP.

Location: Newdegate Research Station.

To determine the decline in effectiveness of zinc on this soil types using DAP.

86LG34

Residual Value of Copper, Zinc and Sulphur with DAP Fertilizer

Location: South Newdegate.

To determine the decline in effectiveness of copper, zinc and sulphur on this soil types using DAP

Trial 67E8

Grain Yields of Wheat Grown on a Residual Copper Trial.

Location: Esperance Downs Research Station.

The trial was originally designed to …

Field Pea Agronomy., G. H. Walton, T. R. Trent

Experimental Summaries - Plant Research

Trial 90M64

Site and variety effect on ovule abortion.

Location: Merredin Research Station CSIRO lease block.

To understand the causes of ovule abortion in field peas.

Trial 90M65

Response to seeding rates of peas with different plant architecture.

Location: Merredin Research Station, paddock 8CW3

To compare the yield responses of different pea types to seeding rates.

Trial 90A26

Nitrogen fixation in field pea.

Location: Avondale Research Station, paddock 1C

To compare the growth, N-fixation and yield of 'nodulating' crossbred material against the commercial cultivars of Dundale, Alma, Wirrega and Dinku.

Trial 90A18

Chickpea germplasm introductions.

Location: Avondale Research Station, paddock …

Grain Legume Species Evaluation., M. Seymour

Experimental Summaries - Plant Research

Trial 90ES19, 90ES22

Grain legume species evaluation.

Location: Mt. Ridley.

To evaluate the response of 6 grain legume species over a range of environments and soil types.

Crop Tolerance To Herbicides., D. Bowran

Experimental Summaries - Plant Research

1. Tolerance of New Cereal Varieties to Current Herbicides EX 5506 Trial Nos: 90AL41, 90EC36, 90EB45, 90KA130, 90M85, 90NA100

2. Tolerance of Current Cereal Varieties to New Herbicides EX 5506 Trial Nos: 90M86, 90EC35, 90N74

3. Metribuzin Tolerance of Cereal Varieties EX 5507 Trial Nos: 90EC37

4. Lupin Tolerance to Herbicides EX 5508 Trial Nos: 90EC34, 90EB44

5. Pea Tolerance to Herbicides EX 5509 Trial Nos: 90KA131, 89KA64

6. Pasture Legume Tolerance to Herbicides EX 64522 Trial Nos: 90KA132,

Use Of Soil Water Measurements To Assist Crop Management In Low Rainfall Areas., S. Mckeague, M. Perry, D. Tennant

Experimental Summaries - Plant Research

Trial 90M9

Trial summary.

Location: Merredin Research Station.

90M9 was established as part of the long term monitoring system to obtain base information on water use from several different soils. A simple rotation experiment was established in T3 on the Merredin Research Station.

Trial 89ME32

Rowspacing summary.

Location: Merredin Research Station.

89ME32 was monitored as part of the long term monitoring system. Previous to 1990 two years of continued measurements had been done on the same soil type. Located on the CSIRO lease block above the Merredin Research Station on Crook's property.

Trial 87M71

Heavyload rowspacing summary.

Location: Merredin Research …

Murex Medic Field Evaluation., D. J. Gillespie, D. R. Mcclements, D. S. Francis

Experimental Summaries - Plant Research

Trials: 90GE113, 90MO62, 90WH87, 90ME72, 90NO115, 90A24, 90AB17, 90AL35

Locations: Geraldton, New Norcia, Wongan Hills, Merredin, Southern Brook, Avondale, Katanning, Tenderden.

The selection SEP29.1 was outstanding for both dry matter production and seed yield over a wide range of sites varying in both rainfall and soil type. On the basis of these trials, six lines have been selected for further evaluation in 1991.

They are: SEP29.1 SEP26.2.7 GRC69 GRC87.1 87F01.28 87FB2.36

Trials 90A25 and 90NO116

Redlegged earthmite field experiments.

Very low levels of redlegged earthmite and only minor damage to test varieties was recorded in this trial. Damage ratings were …

Mineral Facts For Nebraska, Raymond R. Burchett

Conservation and Survey Division

No abstract provided.

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 …

Barley Development Experiment., K. J. Young

Experimental Summaries - Plant Research

Trial 88ES1

Mechanisms controlling development in barley.

Location: Melijinup Field Station.

A range of barley varieties have been assessed for their level of adaptation to a range of sowing dates across the cereal growing region of W.A. This study aims to determine the mechanisms controlling development in cultivars which represent the range of development responses available. The relative importance of photoperiod and vernalisation response and inherent earliness will be determined for each variety.