Physical Sciences and Mathematics Commons^™

Clover Scorch: Summary Of 1974 Experiments, D. L. Chatel

Experimental Summaries - Plant Research

Experiments reported in this summary were conducted jointly with CM Francis. 1. Variety Screening - During 1974, two hundred and fifty-four varieties were screened for resistance to Kabatiella caulivora in small plots at Denmark. The test varieties included 49 that showed up as promising in previous years. The remainder included all the untested accessions for which sufficient seed was available. There were 239 sub. sp. Subterranean, 14 sub, sp. Yanninicum and 1 Brachycalycinum... - The plots were periodically inoculated with infected debris and rated for disease severity on a number of occasions. Lists of the most and least resistant clovers …

Nitrogenous Fertilisers For Cereals: Results From 1974 Trials With Wheat, Barley And Oats, M G. Mason

Experimental Summaries - Plant Research

74A1, 74A3, 74AL5, 74AL4, 74C3, 74E2, 74ES31, 73GLI, 74JE1, 74JE2, 74LG1, 74LG2, 74LG3, 74LG6, 61M11, 74MT17, 74NO1, 74NO2, 74WH2.

Pasture Species Investigations - High Rainfall Area 1974, D. A. Nicholas

Experimental Summaries - Plant Research

1. Clover cultivar grazing trial North Bannister - 68NA1. 2. Clover cultivar grazing trial Chowerup - 70BR15. 3. Clover cultivars x redlegged mite - Chowerup - 70BR16. 4. Pasture types x stocking rate: - Denmark - 72D1. 5. Stocking rate and conservation for steer beef production - Mt. Barker Research Station - 71MT46. 6. Perennial versus annual grass grazing trial - Manjimup Research Station - 72MN5 - 72MN6

Summary Of 1974 Phosphorus And Sulphur Group, J W. Bowden, B. Scurr, R Lunt

Experimental Summaries - Plant Research

Stocking x Super Rate - Merredin - 66M30. Twitcham - 62MB9. Kojonup - 68BR7. Maintenance P x S Trials - I. Residual Value - 66N07 and 66ME3. II. Wheatbelt Rate Trials - 67N011, 66LG1, 68LG1, 67NO5, 6NA3, 67GE2, 66M06 and 67M01. III. Wheatbelt Research Stations and Farmers- 65C5, 65A1, 65N5,69WH15 and 66N09. IV. Higher Rainfall Area Trials - 68B1, 68BU2, 68BR5,68AL3, 69E6, 69AL2 and 69AL3. Miscellaneous Trials - 74GE2, 74GE4, 74GE5,74JE3, 74LG4, 74M06, 74M07, 74TS3, 74NA3 74NA4, 74M07, 74TS4.

1974 Potash Trials 2. Yield Data, W. J. Cox

Experimental Summaries - Plant Research

Experiment nos: 74AL1, 74AL2, 74AR1, 74AR2,74BU1, 74BU2, 74BU3, 74BU4, 74BY1, 74 BY2, 74BY3, 74DE1, 74DE2, 74DE3, 74DE4, 74DE5, 74DE6, 74HA1, 74HA2, 74HA3, 74MA1, 74MA2, 74MA3, 74MO1, 74MO2, 74MO3, 74NA1, 74NA2.

1974 The Ecology And Control Of Doublegee (Emex Australis) And Emex Spinosa, D J. Gilbey

Experimental Summaries - Plant Research

The objectives of the field experimental programme for 1974 were to - 1) Evaluate a technique to measure pasture loss as a result of doublegee infestation at Merredin, Wongan.Hills and Chapman. 2) Evaluate the effect of cultural and herbicide treatment combinations on the magnitude and distribution of viable doublegee seeds in the soil at Avondale, Merredin, Wongan Hills and Chapman. 3) Measure the magnitude and distribution of viable doublegee seeds in the soil from paddocks representing each year of a two crop, plus three year pastureley rotation at Avondale, Merredin, Wongan Hills and Chapman. 4) Screen herbicides for selective control …

Pasture Deterioration - High Rainfall Areas, D J. Gillespie

Experimental Summaries - Plant Research

a. Pasture deterioration - High rainfall areas - A farm at Karridale (near Augusta) exhibiting "classic" pasture deterioration symptoms was closely monitored throughout 1974. This farm has paddocks ranging from relatively newly sown pastures with a high clover percentage, few weeds and high dry matter production (resown 1973 and 1974), through to extremely poor pastures with as little as 3 % clover and a weed component of over 80% (resown 1970 and 1971)... b. Midland B competition studies (69Mt19) -This grazing trial was sown in 1969 to plots of pure Midland B, pure Woogenellup and to three mixtures of the …

Weed Trials 1974 Summary - Annual Ryegrass Control - Wild Oats - Cereal Tolerance To 2,4-D - Annual Ryegrass Toxicity, G. A. Pearce

Experimental Summaries - Plant Research

A herbicide trial and demonstration was commenced in 1973 and the treatment repeated in 1974. the objective was to control the annual ryegrass which was the dominant species and allow the scattered plants of sub clover to re-establish a clover dominant pasture. (See table) Despite the high reduction of seed stalks formed on some treatments in 1973 the ryegrass was only reduced by 50 per cent on the best treatment in 1974, The reduction in seed production in 1974 will no doubt further reduce the density of ryegrass in 1975 but eradication is unlikely. The value of burning in destroying …

Pasture Species Investigations - Wheat Belt (May, 1975), N. R. Mckeown

Experimental Summaries - Plant Research

Results from trials comparing the growth and persistence of a number of annual pasture legumes are presented in this report. Rainfall conditions during the year are described briefly and a table of annual and growing season rainfall at relevant centres is appended. The experiments are grouped as follows according to average annual rainfall:- Zone A - Average annual rainfall > 400 mm Zone B - Average annual rainfall 345 - 400 mm Zone C - Average annual rainfall < 345 mm and then, further, on soil type. District Rainfall, 1974. 71LG16,, 72LG3, 74KA3, 70OTS2, 72TS5, 70NA3, 71TS22, 74NO3, 70ME4. The early break, with good rainfall continuing through most of the growing season, provided optimal conditions for most wheat belt trials. These conditions were in direct contrast to the dry years of the late 1960's and early 1970's. In 1974, legume growth on droughty deep sands should have been at its best. Serradella responded at Kukerin in direct relationship with earlier heavy dressings of potash. West of Three Springs, serradella and Tornafield medic stayed a little ahead of Harbinger medic and well ahead of Daliak sub. clover and rose clover. On deep sands at Marchagee and Arrino, subterranean clover was the only species worth considering. The failure of Eragrostis curvula to persist through the dry 1973-74 summer after good germination in late winter, indicates a need for more work on the establishment of this grass on deep sands. The low yields of dry matter at Tincurrin do not offer much incentive for such work, but Eragrostis, lupins and serradella probably give the best chance of pasturing the grossly infertile, erodable sands. Under favourable conditions, Geraldton sub. clover continued to show its versatility and aggressiveness. On an alkaline loamy sand at Lake King, waterlogged for periods during the winter, Dwalganup, Geraldton and Northam A produced more dry matter than a wide range of other pasture legumes. At Walgoolan, Geraldton maintained better than 503 content in mixtures with other sub. clover cultivars sown in 1970, while in a trial at Marchagee there was evidence of gradual, aggressive regeneration of Geraldton from a sparse pasture sown before the trial. Only two new legume species trials were planted in 1974, and these were not successful. Trial 74KA3, east of Katanning, demonstrated the need for timely planting. Had seed been available on time, the trial would have been planted before the onset of heavy rains and would have given better results. The failure of Tornafield and Harbinger on 74N03 should not weight the record unduly against these medics; :they have never excelled on clay loams, and they were sorely harassed by redlegged earthmite. The medics will not be replanted, but Northam A and Geraldton will be observed in 1975. :

Drought Effects On Wheat Cultivars Using Trickle Irrigation, R N. Weir

Experimental Summaries - Plant Research

Trial 74M32 - The trial was aimed at - 1. Looking for cultivar differences in drought tolerance: particularly involving Gamenya and Insignia. 2. Considering trickle irrigation as a means of controlled water application. Four cultivars were sown at the end of July in salmon gum soil at Merredin. Drought effects on four wheat cultivars in controlled environment Trial 74GL8 - This work was aimed at assessing the performance of the cultivars Gamenya, Gambee, Darkan and Insignia under controlled moisture stress.

1974 Potassium Soil Test Calibration Trials 1. Soil Analysis, W. J. Cox

Experimental Summaries - Plant Research

Site details - 74AL1, 74AL2, 74DE1, 74DE2, 73DE3, 73DE4, 73DE5, 73DE6, 74MA1, 74MA2, 74MA3, 74BU1, 74BU2, 74BU3, 74BU4, 74BY1, 74BY2, 74BY3, 74HA1, 74HA2, 74HA3, 74AR1, 74AR2, 74M01, 74M02, 74M03, 74NA1, 74NA2. 1974 Soil analyses. I. % Gravel, bulk density and ph measurements. I (a) Moisture characteristics. II. Measures of Available potassium. III. CSBP results.

Some Concepts In Rangeland Management, R B. Hacker

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

The arid and semi-arid zones of Australia occupy about 75 per cent of the land mass. The pastoral industries are located within these zones and, although productivity per unit area is low, the region nevertheless constitutes one of the nation's valuable renewable resources.

If properly managed, such a resource may be maintained as a productive asset indefinitely.

Fallow Re-Assessment - Wheat Variety Investigations- Root Growth And Moisture Use, D Tennant

Experimental Summaries - Plant Research

This report summarises progress and data available for the following investigations - Fallow Re-assessment - 72M29. Wheat Variety Investigations - Root Growth and Moisture Use. Location: Wongan Hills Research Station. Merredin Research Station.

Water Economy For Lawns And Gardens, K S. Cole

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

Much of the summer water consumption occurs because it is widely believed that heavy summer watering is necessary. Householders often mistakenly water heavily to keep their gardens green and growing. Many may not realise that gardens can be kept vigorous and healthy with much less water than is commonly applied.

Nitrogen Fertilisers For Pasture Production, Walter Jacob Cox, K Hawley

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

At current prices nitrogen fertiliser is not an economic substitute for good clover pastures, but it can supplement the system by increasing nitrogen supply at peak growth periods. It can also provide useful increases in pasture production at critical feed times. Nitrogen usage for pasture production is still in the experimental stages and small areas should be tried before large-scale application.

Ua35/11 Student Honors Research Bulletin, Vol. Ii, Wku Honors Program

WKU Archives Records

Articles written by honors program students. They were originally research projects, class papers or essays written for academic credit, but in each case the student has done further work editing and improving his or her manuscript for this publication. The articles represent a broad range of interests and disciplines, and they indicate a healthy attempt on the part of at least some students to dig for deeper knowledge and understanding than is usually associated with undergraduate study.

• Greene, Bruce. The Traditional Fiddle Music of South-Central Kentucky
• Moody, Marlin. Some Effects of the Herbicide Glyphosate on Johnson Grass Rhizomes
• Jones, Larry. …

The Prairie Naturalist Volume 5, No.4. December 1973

The Prairie Naturalist

REESTABLISHMENT OF PRAIRIE IN EASTERN NORTH DAKOTA ▪ O. A. Stevens

THE AGE DISTRIBUTION OF ENVIRONMENTAL PERIODICALS ▪ D. H. Johnson

SOME OBSERVATIONS ON THE ECOLOGY OF PLUMATELLA REPENS (L.) (BRYOZOA: PLUMATELLIDAE) IN NORTHEASTERN NORTH DAKOTA ▪ R. D. Stoaks

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1973 ▪ R. N. Randall 61

NOTE: Red-bellied Woodpecker in Rolette, County, North Dakota ▪ D. T. Disrud 52

Index to Volume 5

The Prairie Naturalist Volume 5, No.3. September 1973

The Prairie Naturalist

PRELIMINARY LIST OF NATURAL AREAS IN NORTH DAKOTA ▪ Harold A. Kantrud

BREEDING BIRD POPULATIONS OF RIVERINE FORESTS IN EASTERN MONTANA ▪ Roger L. Kroodsma

The Prairie Naturalist Volume 5, No.2. June 1973

The Prairie Naturalist

SOME ASPECTS OF MINK-WATERFOWL RELATIONSHIPS ON PRAIRIE WETLANDS ▪ Robert T. Eberhardt

SUMMER AND FALL FOODS OF MINK ON THE J. CLARK SALYER NATIONAL WILDLIFE REFUGE ▪ Wayne F. Cowan and James R. Reilly

GIANT CANADA GEESE ▪ S. O. Kolstoe

SOME LICHENS OF BOG AND PAPER BIRCH FROM NORTH DAKOTA ▪ Dennis T. Disrud and Thomas D. Trana

A PALEOCENE FOSSIL LOCALITY IN SOUTHEASTERN SASKATCHEWAN: THE SHORT CREEK SECTION ▪ Paul L. Broughton

NOTE: A new orchid for North Dakota ▪ Robert E. Stewart

Internal Water Potential Of An Engelmann Spruce Stand In Relation To Soil And Atmospheric Factors, Richard L. Meyn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to determine the degree of correlation between internal water potential of Engelmann spruce trees and selected environmental factors. The secondary objective of the study was to determine the effect of summer precipitation, both in meadow and forested sites, on the soil drying cycle.

Four study plots (each roughly 154 square meters) under spruce cover and two study plots (100 square meters) in a small meadow were established. At each spruce plot, a thermocouple psychrometer was installed at one meter above the ground on the north side of three selected, mature Engelmann spruce trees. …

Autecological Life History Studies Of Two Geraniums, Geranium Richardsonii And Geranium Nervosum, Becky Lee Green

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two perennial species of wild geranium (Geranium nervosum Rydb. and G. richardsonii Fisch, and Trautv, [Geraniaceae]) which grow throughout the mountainous regions of western North America were studied to determine the factors influencing the life stage development and distribution of these plants. Attempts were also made to provide some information to assist in the taxonomy of this genus.

Geranium richardsonii is found in wet meadows and along streambanks throughout its distribution. Geranium nervosum frequents rocky hillsides and drier meadows throughout its range.

Seeds of G. nervosum had 65%, germination in the stratification pretreatment. Geranium richardsonii seeds required scarification to …

Bromegrass Productivity In Relation To Precipitation, Shrub Canopy Cover And Soil Nitrogen Content, Lawrence G. Kline

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In seasons of above normal precipitation, populations of annual weedy species increase in great abundance in semi-arid desert plant communities. These increases in biomass tie up a considerable portion of the available nitrogen of such ecosystems and may depress subsequent annual grass germination.

A big sagebrush-annual bromegrass plant community was irrigated to simulate a spring growth period of abundant precipitation amenable to annual bromegras s productivity. Productivity and nitrogen content parameters were monitored throughout the spring and summer to evaluate the short and potential long term effects of this seasonal increase in "precipitation".

Irrigation increased annual bromegrass productivity almost 50 …

Field Measurements Of Photosynthesis And Leaf Growth Rates Of Three Alpine Plant Species, Douglas A. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Leaf photosynthetic measurements using a portable ¹⁴Co₂ field system were carried out and correlative leaf relative growth rates, RGR, were determined at different leaf positions of three alpine plant species throughout the growing season. Initially there was a period of high leaf RGR associated with a period of increasing photosynthetic activity. Following this stage was a long period of no net change in length of the living leaf. During this period, photosynthetic activity generally increased to a maximum level and then decreased steadily. The final ontogenetic stage was a period of negative leaf RGR denoting leaf senescence which …

The Prairie Naturalist Volume 5, No. 1. March 1973

The Prairie Naturalist

DATES FOR FIRST FLOWERS ▪ O. A. Stevens

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1972 ▪ Robert N. Randall 7

NORTHERN ENVIRONMENTAL COUNCIL CORPORATE AWARD, 1972—RESPONSE ▪ K. A. Carlson

ALGAL ASSOCIATIONS IN NEARSHORE WATERS OF GOLDEN LAKE, A SHALLOW PRAIRIE LAKE IN EASTERN NORTH DAKOTA ▪ Douglas W. Larson

NOTE

Observations of Wintering Bald Eagles at Garrison Dam, North Dakota ▪ Frank A. Splendoria

1973 Seasonal Results Phosphorus And Sulphur Group, J W. Bowden

Experimental Summaries - Plant Research

Summary of 1973 Seasonal results phosphorus and sulphur group. Stocking rate x super rate Residual value of superphosphate - 1972 'Decide' Maintenance assessments PXS trials Rates of super on pasture - CSIRO/NSFP Rate/super on wheat - Sources of sulphur - Gyplap - Bunbury - Lake Grace Lime Trials - Lake Jasper - Northcliffe

62MB9, 65N5, 65A1, 65C5, 65A166M30, 66ME3, 66NO7, 66LG1, 66NA3, 67NO5, 67NO5, 67GE2, 67NO11,68AL36, 68B1, 68BR5, 68BR6, 68B1, 68BR7, 68BU2, 68NO5, 69AL2, 69AL3, 69E6, 69WH15, 72M034, 72M042, 72NA35, 72NA39, 72N40, 72N037, 72N040, 72M043, 72N057, 72NO57, 72BA33, 73BA16, 73BY10, 73BY11, 73BY12, 73BY13, 73LG3/3A, 73MA9, 73MA10, 73MA12, 73MA13, 73MA14.

Summary Of 1973 Field Experiments With Advisers, M L. Poole

Experimental Summaries - Plant Research

SECTION I: Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed. SECTION II: Rapeseed Variety Trials 1973 including times of planting. This report provides a record of two series of trials carried out in 1973. Trials - 73A4, 73AL10, 73AL11, 73AL12, 73BR9, 73BR12, 73BR13, 73ES7, 73ES8, 73GE3, 73JE4, 73JE5, 73KA3, 73KA7, 73M2, 73MO11, 73MO13, 73MT5, 73MT6, 73NA6, 73NA7. Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed, series of 12 trials were set up, mainly in the southern agricultural areas, near previous …

Summary Of 1972 Seasonal Results "Decide" Superphosphate Rates On Pastures, J. W. Bowden

Experimental Summaries - Plant Research

A total of 53 pasture trials were topdressed. Of these, 37 trials were quantitatively assessed at different times during the growing season. Of the 15 wheat trials sown, only four trials gave useful results because of multiple drilling techniques used on most trials. Until the trial results have undergone comprehensive statistical analysis, no conclusions can be drawn. about the levels of response or "optimum" rates of superphosphate application at individual sites. However, because of the very short growing season in 1972 responses were generally poor. It appears that nil superphosphate application would have been optimum for animal production in the …

Lupin Split Seed Pilot Trial - Esperance Downs Research Station., J. W. Gartrell

Experimental Summaries - Plant Research

Lupin Split Seed Pilot Trial. Esperance Research Station 1974. % of seed classed according to size and degree of splitting. Manganese - S Richardson - Dandaragan 73PE2

Summary Of Trial Results - 1973, N. R. Mckeown

Experimental Summaries - Plant Research

Trials in Progress During 1973 observations were made on 11 small plot legume species· trials and 11 grazing trials. In 1974 the small plot trials will remain the same and the grazing trials will be reduced to 8. This report summarizes the results from the grazing trials under the following headings:- Seasonal Conditions. Grazing Experiments. 68M023 - Legume Grazing Management·Trial,. West Moora. 71LG17 - Comparison of Production from Cyprus Medic and Volunteer Pasture. Comparison of Production from Tornafield Medic, Serradella and Subterranean.Clover. 70ME2 - Walgoolan 71WH13 - Wongan Hills 69M017 - Watheroo 69LG24 - Lake Grace. Low Oestrogen Legume Grazing …

1973_Pasture Species Investigations - Wheatbelt, N. R. Mckeown

Experimental Summaries - Plant Research

Results from trials comparing the growth and persistence of a number of annual pasture legumes in 1973 are presented in this report. Rainfall conditions during the year are described briefly and a table of annual and growing season rainfall at relevant centres is appended. The experiments are grouped as follows according to average annual rainfall:- Zone A - Average annual rainfall 400 mm. Zone B - Average annual rainfall 345 - 400 mm. Zone C - Average annual rainfall 345 mm. and then further on soil type. 70GE4, 70ME3, 70ME4, 70NA3, 70TS2, 70TS5, 71LG16, 71TS22, 72LG3, 72LG26,