Agronomy and Crop Sciences Commons^™

Tva Fluid Fertilizers Chapter Two - Agronomic Aspects, Eugene C. Sample, Gary W. Akin, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.

Tva Fluid Fertilizers Chapter One- History, Growth, And Status, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.

Tva Fluid Fertilizers Chapter Four - Chemical Properties, A W. Frazier

Robert Mikkelsen

No abstract provided.

Tva Fluid Fertilizers Chapter Five - Production, Handling, And Use Of Anydrous Ammonia And Status, G. M. Blouin, H. L. Kimborough, W. J. Sharratt

Robert Mikkelsen

No abstract provided.

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 …

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 …

1984 Report Of Agricultural Research, Southeast Kansas Branch Station, R. W. Dougherty, K. W. Kelley, L. W. Lomas, J. L. Moyer, D. W. Sweeney

Kansas Agricultural Experiment Station Research Reports

Through annual research reports the Southeast Kansas Branch Experiment Station attempts to keep the area's consumers and producers of agricultural products informed on the Station's research accomplishments. In serving the area, we conduct research at fields located at Parsons, site of headquarters; at Mound Valley, the original. location of the Branch Station; and at Columbus, which has been in the Kansas State University research system for over 60 years. This report for 1983 covers five areas of research emphasis: Beef Cattle, Crops, Forages, Soil and Water Management, and Crop Varietal Development. We sincerely hope that it will be useful to …

Fly Ash As A Fertilizer And Lime Source In Arkansas, Stanley L. Chapman

Journal of the Arkansas Academy of Science

Percent calcium carbonate equivalent (neutralizing value) of five fly ash samples ranged from 34 to 41. Field soils at three sites were treated with fly ash at rates that ranged from 1 to 6 tons per acre. Fly ash applications had opposite effects on extractable P, B, Fe, and Cu at Sites 1 and 2. A three-fold increase in total B occurred in wheat plants taken from one field treated with fly ash. At Site 3 test results of soil samples collected three, six, nine and twelve months after treatment showed that 2 tons of agricultural limestone was equivalent to …

Pasture Species Evaluation In The Medium Rainfall Zone, C W. Thorn, C K. Revell, S Davies, I Rose

Experimental Summaries - Plant Research

The effect of mechanical defoliation on the production of legume species in the Katanning region - 84KA26. The effect of grazing on the seed production of legume species - 84KA27. The effect of gypsum and establishment techniques on Circle Valley medic - 84KA29. The effect of gypsum, tillage and nitrogen on cereal yields in a continous crop system - 84KA28. The effect of gypsum on cereal crop yield - Katanning, E. Garlick Kwobrup, D. Webse. Pasture probe evaluation. Aim: To determine the suitability of the Vickery single probe earth plate capacitance meter for determining pasture production.

Crop Variety Testing And Recommendations, H M. Fisher

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

From 1984 onwards, the Department of Agriculture's crop variety recommendations for Western Australia will be set out in a new format directly related to the 18 variety testing areas into which the South-West has been divided. These divisions should enable growers to more readily identify the recommendations which apply to their area. In addition, yield data on the varieties are provided for each area.

The recommendations are the culmination of a lenghty process of breeding, selection and testing of crop varieties. This article gives the background to the tests and how the results are used as the basis for the …

Sulphur Needs Of Crops And Pastures, J S. Yeates

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

Sulphur deficiency has long been recognised as a potential problem of legume pastures in the higher rainfall areas (over 750 mm a year) of south-west Western Australia. Before the introduction of granulated superphosphate (about 1970), sulfer deficiencies commonly developed in spring on susceptible soils despite autumn applications of superphosphate (containing about 10.5 per cent sulphur).

In loww and medium rainfall areas sulphur deficiency is rarely reported, at least partly because of annual superphosphate applications. However large areas of the sandy-surfaced soils of Western Australia would become sulphur deficient for pastures and crops if sulphur inputsd in fertilisers were substantially reduced. …

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 …

Soil Improvement With Bauxite Residues, W H. Tacey, S. C. Ward, K. J. Summers, N. J. Barrow

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

The sandy soils of the Peel-Harvey catchment hold water and nutrients very poorly. The Gavin ridges dry out quickly during rainless periods and this severely limits pasture growth. These ridges and the lower lying Joel and Coolup sands also lose a large proportion of the phosphorus, sulfer and potash fertilisers applied to them. Normally the sands lack clay materials to bind and hold the nutrients so rainfall leaches them out.

The Peel-Harvey Study Group, CSIRO, Alcoa and Murdock University have studied the use of a residue from bauxite mining to help overcome these problems. The treated residue has a texture …

The Stripe Rust Threat, B R. Whan, T. N. Khan

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

The wheat disease stripe rust caused crop losses estimated at $20 million in New South Wales during an epidemis in 983. Economic crop losses were reported in neighbouring States and as far westas Ceduna in South Australia. In some States large areas were sprayed with fungacide at considerable cost to control disease spread.

Wheat stripe rust has not been found in Western Australia yet, but all current evidence indicates that it will eventually reach this State.When it does, it has the potential to cause considerable crop losses every year, unlike the spasmodic losses from stem rust, and it will greatly …

Molybdenum Deficiency In The Wheatbelt, M M. Riley

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

The trace element molybdenum is needed in very small amounts in nitrogen metabolisms of crops and pastures. One of the projects that started as a result of the overall soil acidity research programme was the examination of molybdenum deficiency on acid soils throughout the South-West of Western Australia.

Soil Acidity In The Eastern Wheatbelt, W M. Porter, I. R. Wilson

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

In Western Australia parts of the sandplain of the eastern wheatbelt are very acid and produce poor crops, It was not until the late 1970s that the effect of soil acidity on the productivity of the sandplain soils was examined in any detail.

Since then researchers have learnt a great deal about the nature of soil acidity in the eastern wheatbelt sandplain soils and can suggest management options for farmers.

This article discisses the problem of the very acid soils. It does not deal with the moderately acid, medium textured soils of the eastern wheatbelt. Although the acidity of these …

Barley Production And Soil Acidity, P J. Dolling, W. M. Porter

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

One of the causes of reduced plant yields on acid soils is aluminium toxicity. because barley is extremely sensitive to this mineral, a project started last year to examine the influence of soil acidity on barley production in the main barley growing areas of Western Australia.

This article discusses some of the background information on the project and its aims.

Soil Acidity And Liming In The Lower Great Southern, R N. Glencross, M. G. Clarke

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

In the 375 to 750 millimetre rainfall area of the Lower Great Southern, reports of loss of subterranean clover from established pastures, reduced carrying capacity for sheep and increasing soil acidity lead to the establishment in 1981 of a research programme into the effects of soil acidity on pasture productivity in that region.

Water Erosion On Potato Land During The 1983 Growing Season Donnybrook, D J. Mcfarlane

Resource management technical reports

Soil losses over a three month period varied from 10 to 49 mm.. Soil loss was most highly correlated with length of slope of the plots. Other important factors appeared to be slope angle and soil textures. Grade furrows appear to be the best method of breaking-up long slope lengths. The low capacity of the furrows requires them to be on grades of about 4 to 4 per cent to prevent siltation and overtopping during high density storms.

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

Experimental Summaries - Plant Research

Trial No.: 84E31 Location: Esperance Downs Research Station.Results: Fertilizer: TSP = triple superphosphate; NCRP = North Carolina rock phosphate; DRP = Duchess rock phosphate. Cultivation: UC = fertilizer applied to the soil surface and left there: C = fertilizer cultivated into the top 10 cm of soil with a rotary hoe after application to the soil surface. Trial No.: 84M63. Location: South Bodallin (Merredin Research Station). Results: TSP = triple superphosphate; NCRP = North Carolina rock phosphate; DRP = Duchess rock phosphate. UC = fertilizer applied to the soil surface and left there; C = fertilizer mixed in to the …

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.

Barley Agronomy 1984, K J. Young, B Wylde, T N. Khan

Experimental Summaries - Plant Research

General comments and highlights, 84ES40, 84ES31, 84 ES21, 84ES42.

Chemical Manipulation Of Pasture Leys To Regulate Composition Ll., C W. Thorn, M W. Perry, P Fievez

Experimental Summaries - Plant Research

Introduction.

Materials and methods.

Experimental design.

Sowing.

Herbicides.

Measurements.

Results.

Discussion.

Conclusions.

Registered Cultivars Of Subterranean Clover : Their Origin, Identification And Potential Use In Western Australia., W. J. Collins, B J. Quinlivan, C M. Francis

Bulletins 4000 -

The annual species subterranean clover (Trifolium subterraneum L.) is the most important pasture legume in Western Australia. In addition to providing nutrious feed for livestock, it is an important source of nitrogen for non-leguminous species in pastures for the State's ceral crops.

Tva Fluid Fertilizers Chapter Seven - Suspension Fertilizers - Production And Use, J Getsinger, Frank Achorn, George Hoffmeister, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.

Chapter Six - Liquid (Solution) Fertilizers, Frank P. Achorn, Lawrence C. Faulkner, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.

Tva Fluid Fertilizers Chapter Three - Physical Properties Evaluation Aspects, T M. Jones, H L. Balay, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.