Soil Science Commons^™

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, …

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 …

Grass Control In Pastures., C W. Thorn

Experimental Summaries - Plant Research

Crop Yields after Pasture Manipulation in 1980. Effect of Grass Control on Pasture Production. Effect of Grass Control on Animal Production. Pasture Density Effects and Composition on Soil Nitrogen. The Effect of Kerb (R) on Rapeseed, Linseed and Barley Grass. 80M041, 80M040, 80AB2, 81A23, 81 A188, 81Ba2, 81 N3, 81 N2, 81 A11 81N21, 81Ka1, 81Ka2, 81 Na3, 81NO5, 81MO1

Grain Legume Agronomy Programme, G Walton

Experimental Summaries - Plant Research

Lupin agronomy, series 1 - growth factor interactions. To evaluate the relative influence that various growth factors exert on crop yield. Lupin agronomy, series 2 - harvest index response to density. To establish whether the harvest index of the plants at maximum crop yield density remains constant over a range of environmental conditions and whether differences exist between cultivars. Lupin agronomy - nutrition. To compare the grain yield response to potash rates. Grain legumes for wheatbelt rotations. To compare the soil fertility after one year growth of different legume species. In the 1981 experiments, Derrimut field pea yielded well, outyielding …

Bulletin 3929 - Irrigation In Western Australia, K S. Cole

Bulletins - 3000 - 3999

Irrigation is essential in many parts of the world to produce essential food and profitable cash crops. Generally, those areas of land with less than 360 mm of rain spread over a distinct wet season of several months cannot grow crops for food or cash on rainfall alone. Then irrigation becomes necessary unless some peculiarity such as an oasis exists.

Influence Of Las Vegas Wash Density Current On Nutrient Availability And Phytoplankton Growth In Lake Mead, John R. Baker, Larry J. Paulson

Publications (WR)

Density currents are commonly formed in reservoirs because of temperature or salinity induced density differences between inflowing and receiving waters. Anderson and Pritchard (1951) were among the first to demonstrate this in their investigations of density currents in Lake Mead. They found that the Colorado River formed an underflow in Lake Mead during the winter, an overflow in the spring and an interflow in the summer and fall. Wunderlich and Elder (1973) have since described the hydromechanics of these types of flow patterns, and density currents have been reported for several other large reservoirs (Carmack et al. 1979, Johnson and …

Relationship Of Tecate Cypress Distribution To Soil Types, David E. Stottlemyer

Loma Linda University Electronic Theses, Dissertations & Projects

The Tecate Cypress (Cupressus forbesii Jeps.) is a gymnosperm tree of limited distribution. To determine if soil is an influencing factor in its distribution, the soil characteristics of a Tecate Cypress grove in the Santa Ana Mountains of Orange County, California, were compared with soils from neighboring communities and other Tecate Cypress groves. Soil samples were analyzed for texture, saturation percent, pH, and electrical conductivity. Tests were also run for nutrients such as nitrogen, phosphorus, potassium, calcium, magnesium, iron, manganese, copper and zinc.

Results seem to indicate that the Tecate Cypress soils are: 1) significantly more acidic than the soils …

Sorrel - Effects Of Soil Nutrients, Dock – Control, Lupins - Residual Dicamba. Peas - Herbicide Screening, Rape - Herbicide Tolerance, Ryegrass - Effect On Wheat Yield, ‘Round Up’ - Drift Test, Artichokes - Herbicide Screening., John Moore

Experimental Summaries - Plant Research

Sorrel - effects of soil nutrients - 80KA39, 80KA40, Dock – control - 80AL74, 80AL76. Herbicides for Spray Graze of Dock in Clover Pasture. J. Tuffley, Albany. Herbicide mixtures for Dock in Clover - R. Pugh, Narrikup. Lupins - residual dicamba - 80MT44. Spray graze with cattle - 80AL80 Peas - herbicide screening - 80AL77. Rape - herbicide tolerance - 80MT45. Ryegrass - effect on wheat yield - 79A32. ‘Round up’ - drift test - 80AL79. Artichokes - herbicide screening - C. Barone, Elliot Road, Wanneroo.

Botanical And Ecological Aspects Of Coastal Raised Peatlands In Maine : And Their Relevance To The Critical Areas Program Of The State Planning Office, Ian A. Worley

Maine Collection

Botanical and Ecological Aspects of Coastal Raised Peatlands in Maine : and Their Relevance to the Critical Areas Program of the State Planning Office.

by Ian A. Worley

A Report Prepared for the Maine Critical Areas Program, State Planning Office, 184 State Street, Augusta, Maine 04333.

Planning Report No. 69 (January 1980)

Contents: Foreword / Abstract / Table of Contents / List of Figures / List of Tables / Acknowledgements / Introduction / Natural History and Ecology of the Coastal Raised Peatlands / Selection of Coastal Peatlands Recommended for Evaluation by the Critical Areas Program / General Evaluation of Coastal …

Wheat Potential Yield Trials 1980, M Perry, A Brown, R Weir, D Tennant, E Harvey, L Linton

Experimental Summaries - Plant Research

80C34, 80TS9, 80BA4, 80WH8, 80KA7, 80N20, 80E41.

Part I. Take-All Of Cereals, Rhizoctonia Bare Patch. Part Ii. Minimum Tillage Trials 1980, G C. Macnish

Experimental Summaries - Plant Research

A. Take-all of cereals. Take-all survey. Effect of nitrogen sources on take-all - 76LG25 (N = 50 kg/ha), 77E4 (N = 25 kg/ha), 77MT19 (N = 45 kg/ha), 77MT18 (N = 45 kg/ha) Oats (1977 Results).

Take-all and the economics of Agras No. 1 (1979 Results) – 79BA30 (N = 10 to 90), 79ES14 (N = 10 to 90), 79LG4 (N = 10 to 90).

Take-all, row spacing and rates of Agras No. 1 - 79ES41 (1979 Results).

Take-all and paddock grass history - 68NA1, 80NA58, 80NA59.

Take-all following cleaning crops - 79El2.

Take-all build-up on new land rotation - …

Septoria Diseases, A. G. P. Brown

Experimental Summaries - Plant Research

Effect of stubble and seed infection on S. nodorum at Badgingarra. Fungicide timing on Septoria control.

Double cropping wheat was simulated by spreading stubble fragments collected from an adjoining paddock at 30 g/m2. Infected seed was from a 1979 sowing at Badgingarra, clean seed was pedigree Gamenya ex Merredin. Treatments were thus:- 1. Clean seed, no stubble. 2. Clean seed plus stubble. 3. Infected seed, no stubble. 4. Infected seed plus stubble. Plots were 10 x 25 m separated by equal sized barley buffers.

Deep Ripping Trial, Wongan Hills Research Station/ Avondale Research Station. Rates Of Ryegrass And Rates Of N On Wheat Yield, M. L. Poole

Experimental Summaries - Plant Research

80WH52, 80A44, 80WH53. 80M41, 80M42.

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

Experimental Summaries - Plant Research

Contents: 1. Summary. 2. Details of research. 2.1 Problem definition glasshouse trial. 2 (a) Vegetative yield affected by topsoil acidity. 2 (b) Root growth in acid subsoil . 2.2 Field Trials. (a) Wheat - Grain yield - Vegetative Growth. (b) Clover. (c) Acidification of soils from the use of nitrogen fertilisers 3. Appendices - trial data. Summary: 1. Problem defining glasshouse trials on soil from 12 sites were conducted in summer/autumn. Results showed that the components of soil acidity affecting wheat growth... 2. The lime and molybdenum requirements of wheat and clover were examined at the sites from which soil …

Grass Control And Minimum Tillage Herbicides, J. E. Holmes

Experimental Summaries - Plant Research

Bromegrass. Wheat loss caused by bromegrass - 80WH47. Herbicides for bromegrass control - 80WH48. Bromegrass control - spraytop - 79NO41. Control of bromegrass – spraytop - 79BA59. Brome and barley grass control - 80NA62. Wild oats. Wild oat control - comparison of commercial treatments – 80NO44. Wild oat control - minimum tillage system - high challenge SITE - 80NO45. Ryegrass. Ryegrass control. Hoegrass effect of rates x volumes x times of application - 80SG41. Barley grass. Barley grass control in wheat - 80SG40. Pasture manipulation. Pasture manipulation - grass reduction - 79A31. Pasture manipulation - rates of herbicide - 80AB3. …

Legume Seed Inoculation, D. L. Chatel

Experimental Summaries - Plant Research

List of experiments 1. 8ONA9A - The response of inoculated and non-inoculated field peas to fertilizer nitrogen on land not previously sown to peas. NARROGIN. 2. 8ONA9B - The response of inoculated and non-inoculated field peas to fertilizer nitrogen on land previously sown to peas. 3. 79GES8 - The performance of different strains of Rhizobium meliloti on different medics. TENINDEWA (Second year).

Pasture Species Research, C. M. Francis

Experimental Summaries - Plant Research

EARLY MATURING MEDICS Early maturing Libyan lines with some tolerance to bluegreen aphids were sown at 6 sites, five in Western Australia and one in South Australia. Seed yield and hard seed data are currently being collated. Maturity and vigour was assessed at all sites and many of the new introductions are earlier than cv. Harbinger and its equal in vegetative growth. A much larger range (300 lines) was grown at Medina and will be introduced into country sites next year.

Kabatiella Research. In cooperation with Dr. D.L. Chatel, screening of introductions for resistance to Kabatiella caulivora continued in 1980. …

Organic Matter As A Source Of Nitrogen, A Reincke

Experimental Summaries - Plant Research

Contents: Available Nitrogen. Relationship between available soil nitrogen and plant growth - 80GH5. The value of organic matter (>2m) to available soil nitrogen - 67C13 & 67N4. The effect of cropping systems on organic matter - 67C13. The effect of organic matter on plant growth. Incorporating wheat and clover (tops/roots/ burrs) at different rates - 80GH2. Seeding of clover at different rates - 80GH6. Incubation of organic matter - 80GH4. Germination problems after organic matter - 80GH8. Pre-Seeding Application of Nitrogen on cereals - 80A2. Lupin/oat mixture trials - 79MT30, 79BA31, . Mount Barker. Badgingarra. The effect of clover …

Regional Trials At Esperance, M Da Bolland

Experimental Summaries - Plant Research

Trials on Salmon Gums Research Station. The trials on the research station are aimed at making the maximum use of the rainfall for cropping. On the heavy Kumarl soils the trials include fallow trials, furrow seeding trials, seeding rate and time of seeding trials, and trials assessing methods of getting the crops in as early as possible; these trials being repeated on fallow and ley Kumarl soil. On the sandy surfaced soils the trials assess methods of sowing the crops as early as possible, and checking if there are different nitrogen requirements for cereals sown by minimum tillage or mechanical …

Lupin Agronomy / Field Pea Agronomy / Alternative Grain Legume Comparisons / Cereal/Legume Mixtures, G H. Walton

Experimental Summaries - Plant Research

1. Lupin agronomy. 1.1 Crop density x weed population – 80GE7, 80GE8, 80GE37, 80GE38, 80GE39, 80TS7, 80TS8. 1.2 Lupin variety x density – 80BA36, 80C25, 80MT34. 1 .3 Variety x density x time of planting – 80MO6, 80MA5. 2. Field pea agronomy. 2 .1 Variety x density – 80NA13. 3. Alternative grain legume comparisons. 3.1 Soil fertility improvement – 79BR2. 3.2 Grain legume comparison – 80BR6, 80ES18, 80ES19, 80GE9, 80JE1, 80JE2, 80NA12, 80NO3. 3.3 Faba bean potential yield – 80MT2. 4. Cereal/legume mixtures. 4.1 Cereal/lupin mix for hay and grain – 80AL11, 80BR4, 4.2 Oats/pea mix for hay and grain …

1979 Trial - Doublegee Seed Dormancy, Lupins Weed Control, Doublegee Control In Pasture, D J. Gilbey

Experimental Summaries - Plant Research

74C7 Doublegee seed longevity X cultivation, Chapman Research Station 75WH65 Doublegee seed longevity X cultivation, Wongan Hills Research Station 75WH66 Doublegee seed longevity X depth, Wongan Hills Research Station 76C9 Doublegee seed longevity X depth, Chapman Research Station 76KA8 Doublegee seed longevity X depth, Katanning Townsite 74A4 Effect of double cropping, shallow dry cultivation and spraying pasture on viable doublegee seed, Avondale Research Station 79C24 Lupin tolerance to herbicides - Illyarrie, Chapman Research Station 79C25 Lupin tolerance to herbicides – Unicrop, Chapman Research Station 79C26 Lupin tolerance to herbicides – Ultra, Chapman Research Station 79C27 Lupin tolerance to herbicides – …

Ground Driven Powered Tillage, Larry G. Wells, E. M. Smith, D. E. Hammett, H. J. Thompson Jr.

Biosystems and Agricultural Engineering Faculty Publications

A ground driven powered tillage device is described which utilizes a passive rolling coulter propelled through the soil by a prime mover. The reaction torque imparted by the soil to the coulter is delivered via a torque transfer unit to a powered tillage blade. The tillage blade rotates counter to the direction of the passive rolling coulter and prepares a tilled furrow of some predetermined depth for seed placement and coverage.

Analysis is presented in which the torque developed by a passive rolling coulter engaging the soil is predicted. A relationship is presented for determining the velocity ratio between the …