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The Effect Of Soil Acidity On Crop And Pasture Production., W Porter, R Klemm

Experimental Summaries - Plant Research

SUMMARY The effects of lime and molybdenum applications on wheat and subterranean Clover were studied further. Wheat. In relation to lime use, my aim is to develop soil tests to be used to predict when a soil requires lime to produce maximum yield, and to predict the optimum rate of lime. Using the results from field trials commenced in 1980 and 1981 the soil parameters which may be used to predict lime responses in wheat have been narrowed down. From the relationships between soil data and lime responses it appears that soil ph (measured in 1:5 H20 or 1:5 N …

Acidification Of Minnesota Soils By Nitrogen Fertilization And Acid Rain, Paul R. Bloom, William M. Schuh, W. W. Nelson

Journal of the Minnesota Academy of Science

The effect of inputs of acidifying nitrogen fertilizer and acid rain on the pH of a typical Minnesota prairie agricultural soil was estimated. Experimental data from a long term continuous corn experiment at the Southwest Experiment Station near Lamberton were used to calculate the effects of nitrogen fertilizers. Acid rain effects were estimated using soil buffering data obtained in the experiment along with existing estimates of rainfall acidity. In a typical corn-soybean rotation, using 100 kg per ha of nitrogen additions to corn, a 0 .25 unit pH drop is expected in about 38 years. The estimated acidity of the …

Sulphur Nutrition Of Pastures And Crops, Phosphorus And Potassium Nutrition Of High Rainfall Pastures On Deep Sands, Soil Acidity - High Rainfall Pastures, J S. Yeates, M F. Clarke

Experimental Summaries - Plant Research

A. SULPHUR - HIGH RAINFALL 1. Rates and time of application of superphosphate to pastures. 79AK2, 79AL23, 79AL25, 79AL41, 81BY1, 81KE1. 2. Sulphur soil test calibration on pastures. 79AL18, 80BY2, 80KE2. 3. Sulphur soil test calibration on pastures: Co-operative PKS soil test project on pastures on duplex soils of the east Albany area (PRD/ARO). Sulphur results. 80 AL44, 46, 47, 48, 72, 73 81AL51, 53, 55 4. Sulphur on adsorbing soils receiving no current S input. 80BY1., 80AL16. 5. Sources, rates, time of application of sulphur on pastures. 80AL1, 80AL4, 81AL3, 81AL4, 80KE1, 80MA1 B. SULPHUR - LOW RAINFALL 1. …

Phosphorus Sources Trials. Miscellaneous Trials., J. W. Bowden, R J. Lunt, M J. Baker

Experimental Summaries - Plant Research

I Sources of PhosphorusTrials - 1981 results. Pasture Trials. 76MT10 - New land pasture at Mt Barker - gravel. 77MT1 - New land pasture at Mt Barker - gravel Methods and particle size effects. 76BU1 - New land pasture at Yallingup - sand over gravel. Cropped to oats 1981. Cropping Trials. 76WH10 - Young land at Wongan Hills - ley year: W.L.S. 76WH9 - New land at Wongan Hills - W.L.S. 76N4 - New land at Newdegate - shallow gravel. 76LG6 - Young land at Newdegate - sandy gravel. 80BA6 - Young land at Badgingarra - pale, deep sand. Trials …

Influence Of Planting Systems On Crop Growth And Soil Water Relations., D Tennant

Experimental Summaries - Plant Research

Summary of experimental results 1981. Influence of planting systems on crop growth and soil water relations. Rainfall infiltration, drainage and water use. Yields. The two late sown treatments of previous years were replaced in 1981 with deep ripping treatments. Details are presented in R. Jarvis' report. 77A16, 77WH17,

Development Of Bioassay Techniques/ Field Persistence Of Trifluralin, Simazine And Diuron. Calotropis Procers And Parkinsonia Aculeata., A H. Cheam

Experimental Summaries - Plant Research

1. Development of bioassay techniques for trifluralin, simazine and diuron. 2. Field persistence of trifluralin, simazine and diuron in Wongan Hills soils. 3. Taxonomic studies of Calotropis procera, a declared weed of the North-West of Western Australia. 4. Germination studies of calotropis procera and Parkinsonia aculeata.

Experimental Summaries., M W. Perry, R N. Weir

Experimental Summaries - Plant Research

Wheat Yield Potential Trials, 81BA4, 81WH7, 81KAS.Wheat-Regenerating Sandplain Lupin Rotation Trials, 79GE38, 79GE42.Nitrogen x Cycocel x Foliar Nutrients x Fungicide-on Wheat,81KA6. Historical Wheat Trials, 81A3, 81C4, 81SG22, 81WH6. Time of Planting on Cereal Yields, 81NA8, 81KA55.

Nitrogenous Fertilisers For Cereals And Rape - Results From 1981 Trials, M G. Mason

Experimental Summaries - Plant Research

Effect of Stubble Treatment on Nitrogen Fertiliser Requirement – 78C3, 78M2, 78WH3. Residual Value of Fertiliser Nitrogen – 81C2, 81M1, 81WH1. Nitrogen Rates vs Stubble Treatment – 81TS36. Method and time of application of urea – 81BA1, 81WH2. Urea Sprays for Wheat – 81LG7, 81LG28. Effect of Nitrogen Sprays on Efficiency of a Weedicide – 81MO13. Effect of Nitrogen Sprays on Efficiency of Hoegrass – 81WH16. Effect of Nitrogen Sprays on Efficiency of Diuron + M.C.P.A. – 81WH17. Effect of Agras No. 1 on Soil pH and Wheat Yield – 80WH3, 80M1, 80N3. Rate of Application of Sources of Nitrogen …

The Effect Of Chemical Grass Control In Pastures On Subsequent Crop Production And Take All Levels, C W. Thorn

Experimental Summaries - Plant Research

To evaluate the effect of chemical grass control, 82LG25.

Introduction. Methods. General notes on the trials. Results and discussion. Conclusions.

Nitrogenous Fertiliser Requirements In Different Cropping Rotations 1981 Results, M G. Mason, I C. Rowland

Experimental Summaries - Plant Research

Nitrogen Requirement of Wheat After Clover, Lupins and Cereal – 78C1, 80BA3, 78N1. Nitrogen Requirement of Barley After Clover, Lupins and Non Legume – 78E3. Nitrogen Fertiliser Requirement in Alternate Crop-Pasture Rotation – 78BA1, 78WH2. Nitrogen Fertiliser Requirement in a Lupin - Wheat Rotation – 81LG29.

Treating Saltland, Department Of Agriculture, Western Australia

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

No abstract provided.

Kabatiella Caulivor, Root Rot Resistance, Bluegreen Aphid, Asessment Of Medicago Murex, Clover Establishment Techniques, D J. Gillespie

Experimental Summaries - Plant Research

Kabatiella caulivora (clover scorch). In contrast to previous years where all overseas introductions and most crossbreds were tested for resistance to Kabatiella, only selected clovers are now being screened so as to reduce the number requiring testing to a manageable size. Root rot resistance screening. One hundred and seven clovers selected as low in formononetin, tolerant of clover scorch, mid to late season maturity, and reasonable winter vigour were tested at two sites for root rot resistance. Bluegreen aphid (BGA) resistance screening. Sub clover screening for bluegreen aphid resistance ranked from tolerant to susceptible (ratings at 49 days from commencement). …

Low Rainfall Pasture Programme, M Ewing

Experimental Summaries - Plant Research

1) Variety Testing. 80ME28, 81ME29, 81ME28, 81ME33, 81ME34, 81LG30, 81TS25, 81M39, 81WH47, 81N032, 81M34.

2) Pasture Establishment. (1) Methods and times of sowing - 81M38, 80LG22. (2) Depth of undersowing - 81M41, 81LG31. (3) Herbicides on undersown clover - 81M031, 81TS26, 81ME32, 81M37.

3) Pasture Manipulation using Herbicides. 81M032, 81TS27, 81TS29, 81M36, 81ME31.

4) Medic Collections. Background. Medics introduced into Australia from a wide range of collection area were ·tested on three soil types near Merredin. The sites were: (1) Merredin Research Station - brown sandy loam. (2) East Merredin property of K. Cahill – brown clay loam. (3) Holleton …

1981 Trace Element Nutrition, J. W. Gartrell, R F. Brennan

Experimental Summaries - Plant Research

1. Long term copper trial - Newdegate Research Station - 66N14. 2. Zinc residual with OAP for wheat - 80NO31. 3. Zinc residual with OAP for wheat - 79ME22. 4. Zinc residual with OAP for wheat - 79ME23. 5. Zinc, sulphur and copper residual with OAP for wheat - 79WH66. 6. Wheat response to zinc rates - 81MO8. 7. Manganese on wheat and oats - 81KA29. 8. Molybdenum and ammonium sulphate (S/A) on wheat - 81NO40. 9. Molybdenum and ammonium sulphate on wheat - 81NO41. 10. Molybdenum and ammonium sulphate on wheat - 81NO39. 11. Mo, lime, Mg on sub. …

Spraytop/Barley Control, Ryegrass Herbicides, Bromegrass Control, J. E. Holmes

Experimental Summaries - Plant Research

Trials reported Spraytop control of bromegrass - 80NO50, 80BA45. Spraytop control of barley grass – 80NA65, 80NO51. Barley grass control - evaluation of Fixaven and Mataven – 81LG40, 81KA44. Pre- and post-emergent application of ryegrass herbicides – 81LG37. Bromegrass control Evaluation of herbicides effect on brome and crop – 81WH52. Evaluation of Glean – 81BA58, 81A53, 81WH51. Evaluation of Dual and Isopoturon – 81A52. Evaluation of Dual and Hoegrass – 80BA59. Screening herbicides for brome control – 81BA57. Evaluation of Glean - 81WH54, 81N27. Tank mixes for minimum tillage – 81M50, 81A56, 81N28, 81NA41. Evaluation of Sencor, Diuron, Trifluralin tank …

Rapeseed, Oilseed Phenology, Linseed And Sunflower Trial, A G. Mckay

Experimental Summaries - Plant Research

Nitrogen x time of sowing, two rapeseed varieties – 81AL21, 81BR2. Rapeseed establishment trial – 81AL47. Rapeseed harvesting methods – 81MT48. Shattering differences among rapeseed lines - 81MT49. Estimated pre-treatment pod shattering losses.

Oilseed phenology – 81MT47, 81WH57, 81A48, 81BA53, 81C37, 81E34. Comment: 81C37- severely infested with wild radish - not hqrvested. 81E34- early insect damage - not harvested. 81A48- yield data not available. 81MT47- yield potential of site reduced by waterlogging.

Kerb on rapeseed and linseed – 81GL6.

Sunflower agronomy trial – 80AL89.

Organic Matter As A Source Of Nitrogen., A Reincke

Experimental Summaries - Plant Research

Contents 1.0 The effects of seeding clover at three rates on three soil types - 81GH1 1.1 Effect on dry matter of tops and roots, and their nitrogen contents. 1.2 Effect on mineral nitrogen, yield and nitrogen uptake. 2.0 The effect of organic matter and time on plant growth - 81GH2 3.0 Seeding rates of clover - 80WH5 3.1 Over summer losses. 3.2 Effect on mineral nitrogen and yield. 4.0 Pasture species/seeding rate trials. 4.1 81GE4 - Dry matter yields and root production. 4.2 81GE2 and 81M04 - Dry matter yields. 5.0 The effect of organic matter, rate of addition, …

1981 Plant Viruses, G D. Mclean, J Sandow, T N. Khan, P. A. Portmann, R Mclean, M Grimm

Experimental Summaries - Plant Research

1, Clover viruses - 81HA6, 81MA9, 81BR14, 81BY12, 81BH5, 81AL38, 81ES39 OBJECTIVES: To determine the extent of the 'Dinninup virus' problem (sub. clover mottle). To further assess the incidence of red leaf virus to determine the incidence of bean yellow mosaic virus. To note the incidence of sub. clover stunt virus. A. BYDV: Survey of incidence - 81BU1, 81BU2, 81BR11, 81BR12, 81MA6, 81MA7, 81AL31, 81AL32, 81JE14, 81JE15, 81KA21, 81KA22, 81NA28, 81N031, 81ES38, 81E26. 2. Barley yellow dwarf virus. BYDV: Genotype x insecticide studies - 81MN14, 81MT29, 81E28, 81MN14. BYDV: differences amongst barley genotypes - 81C19, 81WH31, 81BA30. BYDV: Resistance and …

Loose Smut Of Barley. Sub-Clover Root Rot. Rapeseed Diseases., M. J. Barbetti

Experimental Summaries - Plant Research

Loose smut of barley. Fungicidal control of loose smut in barley – 81MT31, 81NA29. Sub-clover root rot. Fungicidal control of pythium sp – 81AL37, 81BU3. Rapeseed diseases. 1. Rapeseed varieties/Lancelin blackleg strain – 81MO24. 2. Rapeseed varieties/Sclerotinia disease – 81MT32. 3. White leaf spot and grey stem of rapeseed – 81MT33.

Growth Regulator Trials. Part 1, M W. Perry, R N. Weir

Experimental Summaries - Plant Research

This summary covers 1981 trials on chlormequat plant growth regulant (formulated as Cycocel 750A or Halloween), ECO organic seed dressing and a range of organic foliar sprays. Rates and times of application of chlormequat on wheat. 81A22, 81BA3, 81Cl8, 81E25, 81M22, 81MT2, 81N4, 81SG36, 81WH4. Effects of chlormequat on wheat varieties (S4 trials). 81A6, 81BA7, 81C6, 81E6, 81M9, 81M13, 81MT9, 81N10, 81SG26, 81WH19. Trials comparing organic seed treatments, organic foliar sprays and plant growth regulators. 81WH61, 81LG34, 81LG48, 81ME27a, 81ME276, 81TS39, 81ES51, 81ES52, 81ES53, 81ES54, 81NA57, 81N4A, 81MT2A, 81TS38A. H. McCashney, Cadoux Un-numbered, Newdegate Research Station.

Pasture Trials At Esperance, M Da Bolland

Experimental Summaries - Plant Research

Introduction. Most of the 1981 data viz seed yield results, and hardseed data, has not yet been completely processed, and thus only some of the data can be presented in this summary. Section i: Medic species trials – 80SG39, 80SG23, 80SG24, 80ES65(a), 80ES21 (a). Section ii: Lucerne variety trials – 81ES28, 81ES25, 81ES29, 81ES30, 81ES31.

Minimum Tillage, Stubble Management, Deep Ripping, Newland Clearing, Residual Chemicals, R J. Jarvis

Experimental Summaries - Plant Research

A/ Long term Minimum Tillage Investigations (i) Continuous Cropping Sites - 77A16, 77WH17, 77M13, 78M25, 77E18, 77MT15, 78BA42 (ii) Rotational Sites - 77A43, 77WH88, 77M56, 77E52, 77MT51. B/ Minimum Tillage Investigations Including - Time of seeding Cultivars and varieties. Depth of cultivation. Depth of seeding. Nitrogen rates - 81WH8, 81N5, 81NA31, 81NA32, 81WH3, 81A2, 81M45, 81M46, 81GE24, 81N29, 81NA40, 81M24, 81M25, 81MO10, 81MO11, 81MO12. C/ Stubble Management Techniques - 79WH6, 79M7. Stubble Trials by Other Researchers - 78WH3, 78C3, 78M2, 81TS36. D/ Deep Ripping - 80A44, 77WH17, 81NO3, 81NO4, 80NO46, 81NA10, 81NA11, 79MO19, 81NO2, 81M45, 81MO39. 81M45, 81M45, 81ES58 ,81ES57, …

Nebraska Mineral Operations Review, 1980, Raymonds R. Burchett, Duane A. Eversoll

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Field Preparation For Pasture Renovation, Harold B. Rice

Soil Science News and Views

Grassland renovation is the improvement of pasture and hay fields by partial destruction of the sod, plus liming, fertilizing, and seeding as may be required to establish or re-establish desirable forage plants without an intervening crop. In Kentucky, this improvement has been primarily through the seeding of legumes such as clovers and alfalfa into grass sods.

Since liming and fertilizing are essential steps in pasture renovation the FIRST step is to have your soil tested to determine how much lime and plant nutrients to apply. Seedbed preparation will range from none to complete disturbance of the existing sod depending on …

Development Of Irrigation Well Drilling In Nebraska, Vance Anderson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Wind Erosion In The Jerramungup Area 1980-1981, Bryan J. Goddard, M G. Humphry, D J. Carter

Resource management technical reports

An investigation of the wind erosion problem at Jerramungup was conducted by on-farm survey and Landsat interpretation from September to November 1981. Sandblasting and wind erosion were estimated to have seriousloy affected some 44,000 ha in 1980 and over 64,000 ha in 1981. The 1981 damage estimate is conservative, because a much greater area of pasture land was affected by erosion in May-July but achieved vegetative cover by later winter.

Doublegee Seed Dormancy. Lupins -Weed Control,Herbicides, New Products, D J. Gilbey

Experimental Summaries - Plant Research

Doublegee seed longevity x depth - 75WH66, 76C9, 76KA8. Grass control in dry sown lupins – 81A46, 81GE21, 81TS33. Broadleaf weed control in dry sown lupins – 81TS34, 81A47. Early post-emergence weed control – 81GE20. Early post-emergence weed control - lupins - 81TS32, 81A45. Post-emergence grass control in lupins. Post-emergence grass control in lupins None of the mixtures of Barban with Hoegrass and Matavin controlled the main target, Bromegrass. No significant differences due to treatments were detected in grain yields except at Avondale where annual ryegrass was the main grass weed which was controlled readily by the Hoegrass treatments as …

Long Term Rotation Trials., I Rowland.

Experimental Summaries - Plant Research

Long term rotation trials. 66M29/2083EX, 67Cl3/2332EX , 67N4/2333EX, 68E5/2474EX , 68SG5/2475EX , 73SG16. Lupins: Wheat Rotation. 79GE36/3288EX, 79GE37/3288E, 80TS3/3288EX, 73SG16/3229EX Continuous Cropping with Nitrogenous Fertiliser. 80NA6

Legume Seed Inoculation, D. L. Chatel

Experimental Summaries - Plant Research

Medic inoculation experiments – 81ME6, 81GE5. Inoculation trials were conducted at Holleton (81ME6) and Canna (81GE5).The major objectives were: 1. To test the field effectiveness of new strains of Rhizobium meliloti and to compare them with standard strains. 2. To initiate trials aimed at examining the performance of R. meliloti as long term colonisers of mildly acid soils. These trials are the first in a programme aimed at looking at the feasibility of developing acid tolerant strains for large areas of acid soil which are not suitable for growing subterranean clover. The 1981 trials will provide a basis for comparison …

Summary Of Results Of Field Experiments., M L. Poole, A R. Thompson

Experimental Summaries - Plant Research

The aim of these experiments was to determine the relationship between bromegrass and ryegrass densities and their effects on wheat yields and in one case lupin yield 81 BA 45, Competition between bromegrass, ryegrass and wheat. 81 KA 28, Competition between bromegrass, ryegrass and wheat. 81 ME 35, Competition between bromegrass, ryegrass and wheat 81 TS 28, Competition between bromegrass, ryegrass and wheat. 81 WH 48, Competition between bromegrass, ryegrass and wheat. 81 NA 30, Competition between bromegrass, ryegrass and wheat. 81 MT 42, Abandoned due to severe waterlogging and disease. The wheat failed. The weeds grew magnificently. 81 MO …