Agronomy and Crop Sciences Commons^™

Relative Crop Yields On Different Soil Types, Pea And Lupin, R French

Experimental Summaries - Plant Research

1. Relative crop yields on different soil types - 84M50, 84M51, 84M52, 84M53. 2. Pea and lupin time of sowing trials - 84JE42, 84LG32, 84LG31, 84ME55, 84ME53, 84ME54, 84N065. 3. Effect of P-Pickel on Pea Nodulation - 84M64. 4. Lupin Agronomy - 84M55, 82ME52.

Annual Medicago Spp. For Wa Rangelands - Selection And Establishment Techniques, G Gintzburger

Experimental Summaries - Plant Research

1) Exp 84KG1: Annual Medicago spp, for W.A. Rangeland. Ecotype testing with seeds sown (Woolibar Station). 2) Exp 84KG2: Pod seeding of annual Medics and response to phosphate fertilisation (I). (Woolibar Station). 3) Exp 84KG3: Serena Medics on Goldfield Rangeland - Pod seeding and pitting (Jeedamya Station). 4) Exp 84KG4: Pod seeding of annual Medics and response to phosphate fertilisation (II). (Woolibar Station). 5) Exp 84CA1: Establishment and survival of annual Medics - Pod seeding on W.A. rangelands simulating aerial seeding (Quobba Station). 6) Exp 84CA2: Annual Medicago spp. for W.A. rangeland - Ecotypes testing with seed sown (Hamelin Station). …

Modifying Fertiliser Practices, J S. Yeates, D. M. Deeley, M. F. Clarke, D. Allen

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

If modified fertiliser practices are adopted phosphorus losses from the Peel-Harvey catchment can be reduced. Farmers can save money on fertiliser applications and the need for more expensive catchment management measures to reduce algal pollution of the estuary will be avoided.

Research data available so far indicate that, with farmer co-operation and the use of the new slow release fertiliser New Coastal Superphosphate, long-term phosphorus application rates can be reduced by 30-40 per cent - and possibly even halved - without lowering agricultural production. This will also reduce phosphorus loss to drainage water.

Although much of the research since 1982 …

Brown Spot Of Lupins, P Mcr Wood

Experimental Summaries - Plant Research

Fungicide treatment of lupin seed - 84WH34. Effect of cereal stubble treatment on brown spot - 84WH27. Effect of Rovral sprays on brown spot - 84N056, 84NO57. Effect of sowing date and seed treatment - 84BA26, 84WH28. The effect of Rovral seed treatment on brown spot on farmers' lupin crops. Site: Three Springs, Marchagee, North Gabin, Wannamal.

Nitrogen Flows From Several Species And Varieties Of Legume, John Hamblin Dr

Experimental Summaries - Plant Research

Trial 83C24: N flows from several species and varieties of legume.

Trial 83C27: The effect of seeding rate, planting and variety on the residual value of lupins.

Trial 84C25: Small rotation trial for 1985.

Trial 84C34: Nitrogen response on large rotation plots at ECRS.

These trials were carried out in collaboration with: Mr R. Delane, and with assistance from: Mr. T. White, Ms. A. Bishop.

Crop Oil Additives To Herbicides, R Madin, A Lindsay

Experimental Summaries - Plant Research

Crop oil additives to herbicides - 84LG42.

Umbrella grass (Cyperus eragrostis) control in irrigated pasture - 85HA1.

Stinkwort control - 85NO5, 85PE14.

Ice plant (Mesembryanthem nodiflorum) control in crop and pasture - 83SG20, 83SG21.

Long Term Pasture Manipulation Trials, C W. Thorn, C J. Stockdale

Experimental Summaries - Plant Research

A.W.I.R.C Project 498/0029 Pasture manipulation on the Esperance sandplain. Introduction In 1981 a 2 pasture: 1 crop rotation trial incorporating four pasture manipulation treatments was commenced on the Esperance Sandplain to determine: 1. the effect of herbicide manipulation of pasture composition on pasture and animal production. 2. the effect of grass control on take-all levels in a following cereal crop. 3. the effect of grass control on desicantha weevil levels in a following cereal crop. Rotation trial for wheat comparing a pure clover ley with a mixed pasture ley on the Esperance sandplain - Esperance Down Research Station. The effect …

Seed Ecology Of Weeds, A H. Cheam

Experimental Summaries - Plant Research

1. Emergence of weed seedlings from different soil depths 82MT49 Mt Barker Research Station 83MT4 Mt Barker Research Station 82NR12 Northam Research Station 83NR2 Northam Research Station 82C37 Chapman Research Station 83C3 Chapman Research Station

2. Longevity of buried weed seeds 82MT50 Mt Barker Research Station 83MT5 Mt Barker Research Station 82NR13 Northam Research Station 83NR3 Northam Research Station 82C38 Chapman Research Station 83C4 Chapman Research Station

3. Emergence of weed seedlings in relation to soil type and cultivation 82PE32 South Perth

4. Changes in the number of viable dock seeds in soil under different soil surface treatments 83V2 Vasse …

Soil Acidity - High Rainfall Pastures. Lime On Old Land Pastures - Field & Glasshouse Experiments, J S. Yeates, M. F. Clarke, C S. Fang, D A. Tooke

Experimental Summaries - Plant Research

Soil Acidity - High Rainfall Pastures (funded by the Australian Meat Research Committee). Lime on old land pastures. 1. Field experiments - 80BU13, 80BU14, 81AL10, 81AL12, 81AL16, 81BU18, 81BY18, 81BY19, 81BY25, 81BY26, 82AL4, 82AL5, 82AL55, 82BU7, 82BU8, 82HA35, 82HA36, 82PE1, 83AL7, 83AL9, 83AL10, 83AL11, 83AL13, 83AL14, 83BU25, 83BU26, 83BY29, 83HA19, 83HA41, 84BU9, 84BY36, 84BY37, 84HA21. 2. Glasshouse experiments - 84GL4. Investigation of factors involved in lime responses on a new land acid peaty sand. 84GL7, 84GL8. Investigation of factors involved in lime responses on old land high rainfall area pastures.

Investigation Of Root And Foliar Diseases Associated With Decline In Wheat Yields On Sandplain, Jill Wilson

Experimental Summaries - Plant Research

A Wheat Industry Research Council Project. In 1984 research was conducted in collaboration with Dr John Hamblin, Dr Allan Brown, Mr Rob Delane and Dr Mark Sweetingham. 1. Field Trial (GE84Cl5): Interactions between disease and agronomic factors, particularly rotation with lupins, and deep tillage. ( i) Yields, (ii) Incidence of root diseases, (iii) Root length and diseased root length, (iv) Leaf disease. 2. Farm Survey (sites from trial 84GE57 of Dr Allan Brown) Incidence of Common Root Rot

Hoegrass, Herbicide, Plant Growth And Soil Activity Of Glyphosate, T Piper

Experimental Summaries - Plant Research

Hoegrass tolerant ryegrass. Herbicide incorporation. Plant growth one season after herbicide use. Soil activity of glyphosate. Growth of lupins on plots treated with herbicide for each of the two previous seasons - Trials carried out at Geraldton, Wongan Hills and Wickepin measured the amount of pasture produced on plots that had been treated with herbicides while in crop the previous season.

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

Experimental Summaries - Plant Research

I Sources of phosphorus work. Pasture trials - 77MT1 - New land (1977) continuous pasture trial, gravel. 80BA6 - Ley 1984. Serradella weeds and lupin regrowth, sand. 84N069 - New land (1984) pasture, gravel. Crop trials - 76WH9 - New land (1976) run down on one dressing of P W.L.S. 76WH10 - Young land Topdressed annually, biennially and once off. 76WH14 - Old land Topdressed anually and biennially. 76N4 - New land (1976) Topdressed annually biennially and once off, gravel. 84M63 - New land (1984) Once off dressing. Trials not sampled - 77WH2 - Old land Sources trial 77MT2 - …

Nitrogenous Fertilisers For Cereals, M G. Mason

Experimental Summaries - Plant Research

Nitrogenous fertilisers for cereals: Evaluation of the nitrification inhibitor- DIDIN – 84BA2, 84TS2. Nitrogen fertiliser requirement in alternate crop-pasture rotation – 778BA1, 78WH2. Effect of Agras No. 1 on soil pH and wheat yield – 80M1, 80N3, 80WH3. Late nitrogen sprays for wheat – 84M2, 84MT1, 84WH1. Rates of nitrogen on wheat - soil test – 84MO1, 84MO2, 84MO4, 84MO5, 84MO6. Effect of stubble treatment on nitrogen fertiliser requirement – 78M2. Nitrogen fertiliser requirement in a lupin-wheat rotation – 81LG29. Rates of nitrogen on wheat – 84ME47, 84ME48. Nitrogen response in wheat on grey clay – 84MO7. Nitrogen rate on …

Soil Acidity Survey. Lime Responses In The Central Wheatbelt, P J. Dolling

Experimental Summaries - Plant Research

Introduction: In 1984 a project commenced to examine the influence of soil acidity on barley production in the main barley growing areas of Western Australia. To carry out some of the projects objectives a soil survey was carried out.

Aims: 1. To select nine sites for liming trials in 1985. 2. To obtain more information about the soil acidity problem in the medium rainfall region of W.A. 3. To determine if there is a relationship between the pH and aluminium content of the soil.

Survey details: Area covered - Katanning and Narrogin District Office (DO) areas. Sampling period - Mid …

Oilseed Agronomy, A G. Mckay, R J. Larsen

Experimental Summaries - Plant Research

Potential of triazine tolerant rapeseed – 84AL44, 84MA23, 84WH31.

Rates and times of triazines on triazine tolerant rapeseed – 84MA22, 84WH33.

Fitness of triazine tolerant and susceptible F1's - 85GL7.

Cleaning crops for cereals – 84MA2.

Interstate variety evaluation – 84MA24, 84MT42,84WH32.

Horticultural Crops - Grapevines, Capsicum, Fruit Trees, Lucerne., D J. Gilbey, R. Klemm

Experimental Summaries - Plant Research

Crabgrass control in vines - 82SR4, 83SR4 Weed control in capsicums - 83MD10, 84MD6. Herbicide tolerance - fruit - 82MN36. Crabgrass control in lucerne - 82PE60, 83PE6, 84PE4.

Barley Foliage Diseases, Field Pea Diseases, T N. Khan, K. Brain, M Judges, N Sartori, K. Young, G Luke

Experimental Summaries - Plant Research

A. Experimental Notes. Barley foliage diseases: B. Scald: Effect of various fungicides. c. Scald: Response of cultivars to fungicides. D. Scald: Effect of seeding rate on infection and yield. E. Scald: Testing of fungicides S3308L. F. Net blotch: Potential yield losses. G. Net blotch: Screening fungicides. H. Spot type net blotch: Simulated stubble retention. I. Spot type net blotch: Potential yield losses. J. Powdery mildew: Effect of simulated stubble retention. K. Powdery mildew: Time of fungicide application. L. Powdery mildew: Comparing fungicides. M. Powdery mildew: Testing fungicide S3308L. N. Powdery mildew: Response to Erex in farmer's crops. o. Disease development …

Notes: Differences Among Nematode Populations In Tall Fescue Pastures In North, Central, And South Alabama, Jeffrey F. Pedersen, R. Rodriguez-Kabana

Department of Agronomy and Horticulture: Faculty Publications

Surveys of nematode populations in tall fescue (Festuca arundinacea Schreb.) pastures in north, central, and south Alabama in 1982 and 1983 showed significant differences in frequency of occurrence of many nematode species by geographical region. Although nematode damage has been implicated in the poor adaptation of tall fescue to the sandy soils of the extreme Southeast, many plant parasitic nematode species occurred in low frequency in south Alabama pastures. There were significant differences in the frequency of occurrence of Paratrichodorus christiei (Allen) Siddiqi by region. This nematode occurred with relatively high frequency in south Alabama in both years. There were …

Fertilization Practices For Double Cropping Systems, John H. Grove

Agronomy Notes

Double cropping has become an important practice in the state of Kentucky. While the wheat-soybean grain intensive production system is the most widely used on an acreage basis (approx. 3/4 million acres per year) several other systems are being adopted by Kentucky growers. Most of these involve some silage production for beef and/or dairy cattle. The fall seeded small grain (wheat, barley, triticale) is harvested at an immature stage of growth and ensiled and a subsequent crop for silage (corn, grain sorghum) or grain (soybean, grain sorghum) is planted. The use of reduced and no-tillage management will speed up planting …

Heat Tolerance Screening Of Field-Grown Cultivars Of Kentucky Bluegrass And Perennial Ryegrass, D. D. Minner, P. H. Dernoeden, David J. Wehner, M. S. Mcintosh

Office of the Dean (CAFES) Scholarship

The quality of cool-season turfgrasses frequently declines during periods of high temperature stress. Simple tests are needed to rapidly identify heat tolerant germplasm for incorporation into breeding programs. Facilitative screening tests have been devised, however, in the few studies that have been performed only immature and greenhouse or growth chamber-grown plants have been evaluated. To be of practical value, results of screening tests, employing plants grown under artificial conditions, should correlate closely with results of tests involving field grown plants. The objective of this research was to evaluate the heat tolerance of several cultivars of Kentucky bluegrass (Poa pratensis …

Results Of The Twelfth International Winter Wheat Performance Nursery Grown In 1980, S. L. Kuhr, C. J. Peterson, V. A. Johnson, P. J. Mattern, J. W. Schmidt

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This is the twelfth report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station in cooperation with the Agricultural Research Service (ARS), U.S. Department of Agriculture, under contract number AID/ta-C-1093 with the U.S. International Development Corporation, Agency for International Development. The Nursery was designed to (1) test the adaptation and stability of winter wheat cultivars in a range of latitudes, daylengths, fertility conditions, water management regimes, and disease complexes; (2) identify superior winter cultivars to serve as recipient genotypes for high protein and high lysine genes; (3) test the degree …

Urease Activity In A Kentucky Bluegrass Turf, W. A. Torello, David J. Wehner

Office of the Dean (CAFES) Scholarship

The components of a turfgrass ecosystem, including plants, an intervening layer of thatch and the underlying soil, influence the fate of topically applied urea fertilizer. The loss of urea N by ammonia volatilization may be governed by the rate of urea hydrolysis. The main objective of this study was to determine the extent of urease activity associated with turfgrass plant tissue, thatch, and the underlying soil. This information may help elucidate the mechanism of ammonia loss following urea application. Because a turfgrass stand frequently possesses an extensive thatch layer that may serve as the primary plant growth medium, additional objectives …

Effects Of Herbicides And Treatment Dates On The Establishment Of Sod-Seeded Red Clover, Birdsfoot Trefoil, And Alfalfa, R.L. Nichols, R.A. Peters, B.G. Mullinix Jr.

Storrs Agricultural Experiment Station

No abstract provided.

N:S Ratio Of Forages In Kentucky, Kenneth L. Wells

Agronomy Notes

Concern has been expressed during recent years that sulfur may have become more limiting for plant growth and subsequently ruminant animal nutrition than was expected. This likelihood is based largely on the fact that (a) the inherent sulfur content of fertilizer phosphates has greatly diminished with declining use of normal superphosphate in manufacture of mixed fertilizers, (b) increased regulatory effect on burning of high sulfur fuels, and (c) increased use of nitrogen fertilizers for production of animal feeds. Assumedly, any or all these factors could result in alteration of nitrogen and sulfur content of forages to the point that either …

Day-Degree Methods For Pest Management, Kenneth P. Pruess

Department of Entomology: Faculty Publications

Recommendations are made for reporting day-degree methods which may have practical applications. Standardized thresholds (40, 50, and 60°F, or 5, 10, and 15°C) should be used. Day-degrees may be either sine wave approximations or exact units determined by instrumentation. Methods are proposed for converting current day-degree models to standardized thresholds and, ultimately, to actual day-degrees.

Ammonia Volatilization From Fertilized Turfgrass Stands, W. A. Torello, David J. Wehner, A. J. Turgeon

Office of the Dean (CAFES) Scholarship

Nitrogen applied to turfgrass stands can be lost through leaching, denitrification, or ammonia (NH₃) volatilization. The purpose of this investigation was to evaluate the effects of N carrier and mode of application on NH₃ volatilization from a Kentucky bluegrass (Poa pratensis L.) turf growing on an acidic (pH 6.4) Flanagan silt loam (fine, montmorillonitic, mesic Aquic Argiudoll) soil. The NH₃, which volatilized after application of any of several sulfur-coated ureas (SCU), prilled urea, spray-applied solubilized urea, and two liquid N products was measured by passing the airstream from microecosystems, in which the treated turfs …

Performance Of Tall Fescue Varieties, Robert C. Buckner, Paul B. Burrus Ii, Nelson Gay, Garry D. Lacefield

Agronomy Notes

The objective of the tall fescue breeding program is the development of varieties characterized by superior nutritive value (including reduced contents of perloline and loline alkaloids and the fungal endophyte, Epichloe typhina), palatability, disease resistance, and adaptation through the utilization of intergeneric and interspecific hybrid derivatives of ryegrass and tall fescue species. Varieties previously released from the breeding program were, Kentucky 31, Kenwell, and Kenhy. Johnstone tall fescue, developed cooperatively by the Kentucky Agricultural Experiment Station and USDA-ARS, was released March 1, 1982, as,a new variety. Johnstone is characterized as having low levels of perloline alkaloid and the fungal endophyte, …

An Estimate Of The Soil Fertility Status Of Graves And Todd Counties In Kentucky, Kenneth L. Wells, D. E. Peaslee, Marvin Davidson, William Green

Agronomy Notes

Some concern has developed during recent years that fertilizer is being used by farmers on fields with residual levels of P and K high enough that such use is not justified as a means of increasing crop yields. This has been due to increased "average" soil test values for samples routinely submitted to college soil test laboratories.

For this reason, studies were conducted in Graves and Todd Counties in Kentucky during the period September, 1978 to September, 1980, to determine if soil samples routinely submitted to college test laboratories do or do not accurately reflect the average soil fertility status …

Red Clover Variety Trials Through 1982, Roy E. Sigafus, Norman L. Taylor, Garry D. Lacefield

Agronomy Notes

Care should be taken by growers to obtain red clover seed of known origin, variety, germination, and purity. Whenever possible, purchase of certified seed of adapted varieties is strongly advised. Varieties such as Altaswede, Norlac, and Ottawa from Canada; Arlington and Lakeland from Wisconsin; Pennscott from Pennsylvania; Chesapeake from Maryland; and Tensas from Louisiana are not as well suited for use in Kentucky as are Kenland, Kenstar, and a few other varieties developed for the general area of Kentucky.

Evaluation Of Yield And Quality Components Of Lolium X Festuca Hybrids, An, G.S. Speer, D.W. Allinson, W.W. Washko

Storrs Agricultural Experiment Station

No abstract provided.