Life Sciences Commons^™

Herbicide Residue And Weed Control In Switchgrass, Charles Nicholas Smith Jr.

Electronic Theses and Dissertations

Purposes of this study were to find an effective herbicide for control of grassy weeds in a pasture, to adapt known laboratory procedures for analyzing residues and to determine amounts of residues during the growing season in treated plots. Nine herbicides were screened for controlling grassy weeds, primarily downy brome (Bromus tectorum L.) in a native pasture. Data indicated 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine) applied postemergence at 1 lb/A was the most effective at 85% control. The following year, atrazine, 2-chloro-4, 6-bis­ (ethylamino)-s-triazine (simazine) and 2, 2-dichloropropionic acid (dalapon) each at 1, 2 and 3 lb/A were applied preemergence to switchgrass pasture. Of …

A Cheaper Herbicide For Wild Oats, Geoffrey A. Pearce

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

A NEW herbicide, *NEOBAN, will reduce the cost of chemical for the control of wild oats in wheat and barley to $2.50 per acre.

Because of the cost of herbicides for wild oats during the past two years, the acreage treated has been declining steadily.

Farmers who thought that spending about $4 per acre was worth while will be delighted with Neoban.

Chemical Cultivation : Its Place In Crop Planting, Geoffrey A. Pearce

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

PROGRESS in the field of chemical weed control has been spectacular in recent years. Despite the cut-back in expenditure on herbicides, the idea of replacing cultivation with chemical sprays is attracting great interest.

1971 Field Experimental Results, T. O. Albertsen

Experimental Summaries - Plant Research

Maintenance P and S for pastures in low rainfall areas

66MO6, 67MO1, 68NO5, 68TS1, 65A1, 65C5, 69WH1,66KA7, 66LG1, 68LG1, 65N5, 67GE2, 67NO5, 66NA3, 66ME3, 66NO9.

Stocking rate and rate of super on Cyprus barrel Medic pasture

66M30.

Continuous cropping with N.P.S.

69NO1, 60NA1, 69ME1,69TS1.

Super rates for wheat

71GE5, 71GE6, 71GE40, 71J22, 71N15

Gypsum rates on rape

71GE31, 71TS24, 71TS25, 71NO22, 71NA22,71NA23, 71KA1, 71KA14, 71BY1, 71BR15, 71AL9.

Rates of phosphorus and sulphur on rape and wheat

71A16

Wheat Quality Surveys In Western Australia, J A. Parish, G. H. Jones

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

SINCE 1956 a number of collaborative wheat quality surveys have been carried out in Western Australia by Co-operative Bulk Handling Co. Ltd. and the Department of Agriculture.

The work was undertaken to provide facts which may be used to determine the possible advantages to this State's wheat industry of alterations in the receival and marketing arrangements.

The various surveys are described in this article.

Barley And Oat Yield Tests In W.A, H M. Fisher

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

BARLEY production has increased sharply over the past two seasons to compensate reduced wheat acreages.

The change over to barley has been supported by the availability of suitable varieties, notably Dampier, and a good demand for West Australian barley overseas.

The Economics Of Spray Seed, J W. Malcolm

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

THE "Spray Seed"* technique has many advantages over conventional cultivation methods of weed control. Some of these are matters of convenience, preference or opinion, and these cannot be measured in general economic terms.

However, most farmers are in the business to make money and as making money becomes harder they are more concerned with the extra money a new move is likely to earn for them.

Wheat Yield Tests In W.A, H M. Fisher

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

WHEAT production is the major crop industry in Western Australia so emphasis has been placed on this crop in variety tests.

Over the last 5 years 61 wheat varieties, including 30 named varieties from various sources, have been tested in variety trials.

Irrigation In South-Western Australia, K S. Cole

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

THE pattern of irrigation in South-Western Australia is constantly changing, At present, the main increase is in the private sector.

In the past century, there has been a see-saw effect from private to Government to private schemes.

Why Does Second-Cutting Red Clover Hay "Slobber" Animals, J. Kenneth Evans, A. S. Williams, D. E. Labore

Agronomy Notes

For years, farmers have noticed the slobbering of animals after feeding second-cutting red clover hay. Severity of this effect, however, has varied from year to year. Questions asked many times are what causes the slobbering and what can be done about it? To get the answers available, let's go back about 37 years into something which appears to be totally unrelated to slobbering and follow research which has been done on a fungus, which causes a disease of red clover.

Preliminary Report, 1969 And 1970 Kentucky Small Grain Yield Trials, Verne C. Finkner, Charles Tutt, Dennis M. Tekrony

Agronomy Notes

No abstract provided.

Effects Of Ensiling On The Hcn Potential Of Sorghum Plants, Glenn Mccarty

Masters Theses & Specialist Projects

The effects of ensiling on HCN potential (HCN-p) of sorghum plants were studied at Bowling Green, Kentucky in 1969-70. Four cultivars were sampled at various growth stages and ensiled in 1.8 liter glass containers fitted with gas release valves. The plant material was analyzed for HCN-p by the sodium picrate procedure prior to ensiling, immediately after being removed from the silo, and after 24 and 48 hours of air-drying. Gases released during ensiling, and gases flushed from the silos were analyzed for HCN. The level of HCN-p decreased during the ensiling period and during the first 24-hour drying period. Some …

Reactions Of Pollen-Pistil Combinations In Vitro & Their Relationships To Compatibility In Alfalfa, Emerson Shipe

Masters Theses & Specialist Projects

Reactions of in vitro pollen-pistil combinations were studied and related to compatibility differences in Buffalo alfalfa Medicago sativa L.) at Western Kentucky University, Bowling Green. Pollen-pistil combinations were made at random among a number of alfalfa plants in 1968 (Experiment I). Pollen tube elongation varied significantly when -4 pollen from the same plant was placed on agar media containing pistils from different plants. Three of four plants for which intra-plant combinations (pollen and pistils from same plants) were made 1,ad tube lengths significantly shorter than those measured for inter-plant combinations (pollen and pistils from different plants).

Similar in vitro pollen-pistil …

Yield And Value Of Burley 21 Tobacco As Influenced By Nitrogen Nutrition, Suckering Practice, And Harvest Date, J. L. Sims, W. O. Atkinson

Agronomy Notes

An experiment was conducted in the field during 1966 on Maury silt loam soil to obtain information of the effects of agronomic factors on yield and value of Burley 21 tobacco . Ammonium nitrate fertilizer at varying rates, and concentrated super-phosphate and potassium sulfate at constant rates , were broadcast and disked in after plowing and before transplanting. All plots received irrigation water (sprinkler system) to supplement rainfall when soil moisture dropped below 60% of available moisture-holding capacity. Sucker control practices utilized were (a) no topping - no suckering, (b) topping - no suckering, (c) topping - hand suckering, and …

York Soybeans Added To Recommended List, Dennis B. Egli

Agronomy Notes

York soybean, a pure line selection developed by the Virginia Agricultural Experiment Station from a cross of Dorman X Hood, was recently added to the recommended list for Kentucky. It was released jointly in 1967 by Virginia, Maryland, and North Carolina.

Linseed Within The Clover Ley Farming System, Department Of Agriculture, Western Australia

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

LINSEED was one of the first crops to be widely used as an alternative to cereals in the over-17 inch rainfall areas. It is now an established crop with a total 1969 production worth just under half a million dollars.

Linseed is currently worth nearly twice as much as wheat per bushel, wih its short term prospects still attractive.

Grain Aeration On The Farm, G D. Rimes

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

ALTHOUGH grain aeration is a well known and widespread technique employed to prevent insect development in stored grain, the installations are invariably designed for large scale grain handling authorities.

Experimental work carried out in Western Australia over the last four storage seasons has shown that simple unsophisticated equipment can be of direct use in farm storage.

Rapeseed Production In Western Australia, M L. Poole

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

RAPESEED production began in Western Australia in 1968 when a few acres were grown. In 1969, about 20 growers ptanted small acreages for about 80 tons of seed. In 1970, up to 20,000 acres will be grown, and a total of 40,000 acres seems possible within the next few years.

Copper Requirements For The South-Eastern Wheatbelt, D J. Gilbey, K. D. Greathead, J. W. Gartrell

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

FARM experience and the results of five years intensive research have shown copper deficiency to be widespread in the south-eastern wheatbelt.

On many areas of the south-eastern wheatbelt, copper deficiency is likely to restrict wheat yields.

Rationing Standing Crops To Sheep, H E. Fels

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

This experiment was done at Merredin Research Station to develop and test a method of rationing standing crops to sheep, and also to find whether rationing would reduce the sheep's water consumption.

The experiment involved 60 sheep on 12 one-acre plots of drought affected Gamenya wheat.

Surplus Cereal Crops For Sheep Feed, H E. Fels

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

SINCE the introduction of wheat quotas many farmers have considered feeding unsaleable grain to sheep.

The three alternative methods of feeding this grain to sheep are

• as standing crops

• as grain supplements, fed in the paddock

• as grain plus hay, in a feedlot.

Lucerne Establishment In High Rainfall Dairying Districts, R Sprivulis

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

LUCERNE is one of the oldest of perennial forage plants. It originated in the Middle East and because it flourishes under a wide range of climatic and soil conditions it is being grown in many parts of the world.

Lucerne was introduced to Australia in the early years of British settlement. The original introductions proved suitable for the alluvial flats of the Hunter and Peel River valleys of N.S.W.

Lucerne is basically a summer growing legume with or without winter dormancy.

Influence Of Urea On The Fermentation Pattern & Nutritive Value Of Corn Silage, John Shirley

Masters Theses & Specialist Projects

The effects of chemical additives on the fermentation pattern and subsequent feeding value of corn silage was investigated over a two year period. Corn plants harvested in August 1967 (Experiment I) were ensiled with no additive, 3.50 per cent area, or urea-mineral mix supplying an equal amount of urea. Those harvested in August 1968 (Experiment II) were ensiled with no additive, 0.50 per cent urea, or 0.75 per cent urea. The nutritive value of these silages was evaluated chemically and by lactation trials.

:he addition of urea alone, or in combination with minerals elevated the initial pH and buffered against …

Crop Rationing : A Useful Drought Feeding Technique, H E. Fels

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

A TRIAL carried out during the 1969 drought demonstrated that rationing standing crop is a practical method of feeding it to sheep when feed is scarce.

Rationing will be mainly a drought feeding technique for that part of the crop which will definitely be used as sheep feed. Crop that may or may not be needed for sheep would normally be harvested and the grain kept as a contingency allowance.

1970 Results Of Field Experiments, T O. Albertson

Experimental Summaries - Plant Research

"1970· Progress Eight of the 5 unreplicated trials were cropped without fertiliser. Seven were harvested (severe weed infestation ruined 66KA 7). Three trials left under pasture responded to the fertiliser treatments and were cut for dry matter production. The remaining four trials left under pasture grew badly, became weed dominant and were not rated for growth differences between treatments or cut for dry matter production. The replicated trials at Avondale and Newdegate were also cropped, without fertiliser. The replicated trials at Wongan Hills Research Station and Chapman did not visually respond to treatments and were not cut. 69WHl5 succumbed to …

Work Completed Or In Progress 1970, R Weir

Experimental Summaries - Plant Research

1. Yield selection characteristics - 70WH5, 70M15. 2. Sorghum development - 70GL2, 70GL9. 3. Moisture stress effects on wheat - 69GL15, 70GL3, 70GL8. 4. Flower abortion of Lupins - 70GL18, 70GL19, 70GL20, 70GL21, 70GL22. 5. Salarimeter Readings

Results Of Field Experiments 1970, M D. Carroll

Experimental Summaries - Plant Research

1. 70M17 The effects of Cultivation on Soil Nitrogen and Wheat Production 2. 69N11 and 69ES30 Soil Nitrogen Build-up under Various Legumes at Different Plant Densities 3. 7ON021 (R.N. Glencross) Rates of Copper and Zinc on Daliak Sub. Clover.

Fertilizing No-Till Corn, John L. Ragland, John Masterson, C. R. Belcher

Agronomy Notes

Results of an experiment conducted in 1968 at Princeton, Kentucky on low phosphate soil showed that surface-applied phosphorus was sufficiently available to no-till corn to produce good yields. This experiment was repeated again in the 1969 growing season with the results well in line with those reported for 1968 in Agronomy Research (Misc. 377) pages 41-43.

New Early Maturing Serradella Available To Seed Producers, Department Of Agriculture, Western Australia

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

Seed of a newly-developed yellow serradella cultivar, "Uniserra," will be released to seed producers for sowing this autumn.

Release of the seed was announced this month by the Chairman of the Western Australian Herbage Plant Liaison Committee, Mr. E. N. Fitzpatrick.

The Outlook For Barley, P J. Hackett, E. J. O'Loughlin

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

World production of barley in 1968 was 4,107 million bushels—an increase of 7 per cent, on the previous year.

Further increases are estimated for the 1969 season, especially in Canada and France. World production is expected to be 3 per cent, higher than in 1968.