Agronomy and Crop Sciences Commons^™

Results Of The Fourth International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The Fourth International Winter Wheat Performance Nursery was grown in 1972 at 44 sites in 27 countries. Data were reported from 40 sites. The 30 cultivars grown in the nursery included 15 new entries. Twenty-nine cultivars were winter wheats; one was a spring wheat. Data are reported on grain yield, test weight, plant maturity, plant height, lodging, shattering, winter survival, 1000 kernel weight, frost damage, plant diseases, grain protein and lysine content. Two-year mean data summaries also are reported. Supplemental nursery management information is reported for each nursery site.

1974 Preliminary Report Of Kentucky Small Grain Variety Trials At Bowling Green And Lexington, Charles Tutt, Morris J. Bitzer, Verne C. Finkner

Agronomy Notes

Each year the small grain variety trials are conducted at Princeton, Murray, Bowling Green and Lexington. In 1974, the plots at Princeton and Murray were severely infected with a complex of diseases including Barley Yellow Dwarf, Septoria glume blotch, wheat scab and an unidentified disease in the wheat. As a result of the intensity of these diseases, the data obtained from these plots was very erratic and the results were not considered to be experimentally valid. The data obtained at Bowling Green and Lexington were quite valid and representative of the general situation in Kentucky.

The Effect Of 2,4-D, Grazing Management And Nitrogen Fertilizer On Pasture Production, M. K. Mccarty, M. L. Cox, D. L. Linscott

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Many pastures in eastern Nebraska and surrounding areas have gradually decreased in productivity. Over a long period of heavy grazing, native warm-season grasses have been largely replaced with Kentucky bluegrass, other less desirable grasses, and broadleaf weeds. A program was started in 1949 to study the effectiveness of protection from grazing in changing the botanical composition and yield of a pasture where the predominant forage was Kentucky bluegrass. Several weed control treatments were included in this experiment to determine if mowing or spraying would hasten the return of more desirable forage. After weed control and differential grazing treatments had been …

Lysimetric Calibration Of The Bowen Ratio-Energy Balance Method For Evapotranspiration Estimation In The Central Great Plains, Blaine L. Blad, Norman J. Rosenberg

Department of Agronomy and Horticulture: Faculty Publications

Most reports show good agreement between evapotranspiration (ET) rates estimated by Bowen Ratio-Energy Balance (BREB) method and rates measured with lysimeters, although underestimation by the BREB model has occasionally been reported. This study was conducted to evaluate the performance of the BREB technique in the climatic conditions characteristic of the central Great Plains, a region where a significant proportion of the energy consumed by evapotranspiration is supplied from advected sensible heat.

Agreement between the BREB method and lysimetric measurements of ET is good during non-advective periods but during advective periods the BREB model underestimates ET by about 20%. Data collected …

Wheat Breeding, J T. Reeves, N. Roy

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

In a normal harvest about 90 per cent of Western Australia's wheat production is exported overseas, where it is used in a wide range of products including noodles, bread, "steamed" bread, chapattis and biscuits

Wheat breeders in W.A. therefore have the problem of developing new varieties suited to many end uses, not all of which have the same quality requirements.

Pasture Seeds : Production Techniques And The Future Market Situation, B J. Quinlivan

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

Like other farming and grazing industries, pasture seed production has its share of booms and slumps —perhaps more than its share. In Western Australia, the industry reached a high point during the mid-1960's when land development along the south and west coastal districts was at its height.

The drought year of 1969 and the subsequent rural depression saw pasture seed production fall to its lowest level for ten years and it is only in the last 12 months that there has been a revival.

With the sudden upsurge of interest last summer there will be many potential seed producers now …

Crop Recommendations (1975) And Variety Trials (1973-1974), Department Of Agriculture, Western Australia

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

Variety recommendations for 1975 were derived mainly from results of 259 trials conducted at 60 sites in 1973. The main programme included wheat, oat, barley and lupin trials sown at 43 sites in wheatbelt areas; biscuit wheat trials on 12 sites in southern medium and high rainfall areas, and special hard wheat trials on 12 heavy land sites in low rainfall areas.

Also included was a series of early-sowing trials with lupins, wheat and barley; linseed trials in southern coastal areas, and preliminary wheat, oat and barley variety trials on research stations.

Lupin Agronomy: Time Of Planting, Seeding Rate And Variety In A Long Season Area., M. W. Perry

Experimental Summaries - Plant Research

To evaluate lupin varieties and agronomic practices in a long season district using a factorial experimental design. 74A16a Location - Warriup 57 km E. of .Albany. 74A16b Green Range, 70 km E. of Albany. Time of Planting (4) Seeding Rates (4) Varieties (4) Fertiliser.

Summary Of Experimental Work 1974, G Walton

Experimental Summaries - Plant Research

Lupinus albus cv WB2: Maximum yield response to 36 plants/m2 at Avondale (1973 and 1974) and Mt Barker Research Station in 1973 (achieved with 180 to 200 kg/ha seed rate), Maximum yield response to 48 plants/m2 at Chapman 1973 and 1974 and at Eradu 1974 (achieved with 220 tG 240 kg/ha). Very good yield results: Season - site Avondale 1973-3300, 1974-2250. kg/ha Chapman 1973-2800, 1974-2400. Mt Barker 1973-1900. 74A2 - Rates Of seeding for L, albus cv WB2. 74A21 - Rates of super on two lupin varieties. 74BR1 - Pasture regeneration after lupin survey. 74C4 - Rates of seeding L. …

Experiments To Measure The Reduction Of Soursob Density., J R. Peirce

Experimental Summaries - Plant Research

Trials: 74WH; 74C19; 74E16

Soursob density. Rate of application of Diuron, Linuron and Tribunil.

Test various formulations of Diuron. Determine the effect of high rates of Diuron on a crop area.

Test various chemicals for control of Matricaria.

Determine whether Skeleton weed seed is capable of germinating.

Differences in the length of skeleton weed seed from different sites.

Linseed : A Forgotten Crop, M L. Poole, R. J. Guyton, H. M. Fisher

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

Linseed has become a forgotten crop in Western Australia. From a peak production of 6 200 tonnes from 12 500 hectares in 1969, and an apparently bright future, it dwindled to a bare 80 tonnes from 250 hectares in 1973.

This article looks at some of the reasons for this decline and, with linseed fetching all-time record prices on world markets, gives reasons why the crop should be grown.

Grain Moisture Problems On The South Coast, J A. Parish, G. H. Jones

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

In most West Australian grain growing districts high temperatures and dry weather at grain maturation are ideal for harvesting and enable delivery of grain with acceptable moisture levels. Grain from W.A. is known in world markets as a good quality dry product which is unlikely to deteriorate in storage. However, growers in coastal areas and particularly those south of Narrogin sometimes have trouble harvesting grain below the receival limit of 12 per cent moisture.

Grain Moisture And The Weather : What Can The Records Tell Us?, M W. Perry, P. A. Fievez

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

The expansion of cereal production in areas along the south coast has exposed harvesting problems associated with high grain moisture.

A grain delivery standard of 12 per cent moisture means that, in the absence of grain drying facilities, harvesting times in the field are restricted to those hours when grain moisture falls below this figure.

Grain moisture, however, remains the major problem and for planning purposes, producers require an estimate of the harvesting time available in a given year. This will depend on all the climatic variables which affect grain moisture. These include rainfall and dew which deposit water directly …

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.

The Place Of Lucerne In Western Australian Agriculture, N J. Halse, C. M. Francis

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

Lucerne, the world's most important fodder legume, has never won largescale acceptance in West Australian farming, largely because of our success with productive subterranean clover pastures. But recent disease problems on sub. clover stands have led to greater interest in alternative species, especially lucerne, for higher rainfall areas.

This article summarises our knowledge of lucerne establishment and management in W.A. and reviews current research aimed at achieving better results from lucerne.

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.

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.

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 …

Interim Summary 1974 Experiments, M L. Poole

Experimental Summaries - Plant Research

Data presented for: 74MT38 - Variety Trial - New rape and radish varieties 74MT27 - Rates of seed, time of planting on Crambe abyssinica 74GE'1 ·- Time of Seeding X Rate of Nitrogen on Sunflowers. Oilseed and Grain Legumes under Summer Irrigation. Sunflower Progress Report. Safflower Progress Report. Response of Oilseed Crops to Climate. Introduction - The results given in this report provide an interim record of 1974 experimental work with oilseed crops. An essential part of oilseed trial programme is an evaluation of the quantity and quality of oil produced by different species and varieties under a range of …

Summary Of Experimental Results - Wheat Protein Survey, R Weir

Experimental Summaries - Plant Research

Wheat protein survey Seeding rate x grain protein - 72NA33. Seeding rate x grain protein - 72M28. Temperature effects on flower set of lupin - 72GL4. Wheat protein survey - A survey of 130 farmers in 13 Shires of the high protein area around Merredin was undertaken in the few weeks prior to the 1972 harvest. Grain samples were forwarded by farmers after supplying site data including yield estimate. A soil sample was collected on which % soil N was determined. This information together with grain protein percentage was included in multiple regression, and stepwise regression analyses.

Long Term Rotation Trials - Annual Summary Of Results 1975, Ian Rowland

Experimental Summaries - Plant Research

Long term rotation trials: Results are the yield of grain harvested from crops grown after various lengths of pasture ley. W56H, 66M29, 67C13, 67N4, 68SG5,

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.

Quantitative Gene Action And Interrelationships Of Protein Content With Some Metrical Traits Of Oats, Harbans Singh Sraon

Electronic Theses and Dissertations

The objectives of this study were (a) to determine gene action, heritability and number of effective factors controlling protein content in oats, (b) to investigate the interrelationships of protein content with other agronomic characters, and (c) to evaluate the feasibility of utilizing A. sterilis germplasm in oat breeding projects. Four genetically distinct cultivars with protein content ranging from 15.7 to 26.6 percent were crossed in all possible combinations to make a complete set of diallel crosses. The data suggested additive gene action and partial dominance for protein content. Groat percentage and number of panicles showed overall partial dominance. Yield and …

Winter 1974, Gerald Moscato, James Bernard, Joseph Troll, Marvin D. Swart, Peter S. Loft

Turf Bulletin

1. DELEGATION--A Path to Satisfied Employees and Increased Productivity (page 3)
2. UMass Herbicide Evaluations (4)
3. Turf News (5)
4. Heating Elements (8)
5. Back and Beyond (10)
6. Turf Grass Contributions (20)

Improving Water Use Efficiency Of Smooth Bromegrass By Selecting For Regrowth, Delmer F. Gross

Electronic Theses and Dissertations

Sixty-nine genotypes, including 60 from the variety Saratoga smooth bromegrass, three from South Dakota 7 smooth bromegrass, and two each of reed canarygrass, orchardgrass, and creeping meadow foxtail as check species were selected for regrowth from a source nursery containing over 37,000 genotypes. In addition, four genotypes of Saratoga with poor regrowth capability were selected as checks. These 73 genotypes were placed in a greenhouse environment to evaluate digestibility (IVDMD), and other characteristics. After three harvests, 34 genotypes were vegetatively propagated in a field experiment to determine regrowth capabilities. NCE rates were not correlated highly with yield in the greenhouse …

1974 Trace Element Nutrition, J. W. Gartrell

Experimental Summaries - Plant Research

1 • Mineral nutrition of sweet lupins 74M031, 74M032, 74M033, 74M034, 74M035, 74M036, 74M09, 74M038, 74BA15, 74BA16, 74BA17, 74BA18, 74AL20, 74JE19, 74ES27, 74ES28, 74E17, 74TS26, 74TS27, 74N028, (See Cox's Report)

2. Barley nutrition 74TS29.

3. Cu Zn Residual 74AL19, 66N14 (incomplete)

4. Cu or requirement of cattle 74GE30 (See May and Barker, Animal Production Report)

5. Co on sheep Badgingarra trial (See Croker's Report)

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. :

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.

The Effect Of Applied Nitrogen And Subterranean Clover On The Growth Of Doublegee, D J. Gilbey

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

Until 20 years ago doublegees in Western Australia were mainly confined to the red-brown earth soils of the wheatbelt.

Since then, they have spread to light loamy sand soils in the wheatbelt, many of which have carried subterranean clover from the mid-1940s onwards.

It has been widely presumed that the spread of doublegees on to the lighter sandy soils of W.A. can be associated with the establishment of subterranean clover on these soils.

This report summarises the results of a glasshouse experiment on the effect of clover and nitrogen on the growth of doublegee.