Life Sciences Commons^™

A Burley Tobacco Variety-Management Study In 1966-67, Jones H. Smiley, W. O. Atkinson, A. M. Wallace, Ira E. Massie

Agronomy Notes

A management study was designed to investigate the desirability of two management systems emphasizing (1) yield and (2) quality and a third system (3) aimed at achieving an acceptable level of both yield and quality. (These are hereafter referred to as the "high yield, " "quality, " and "yield and quality" systems, respectively.)

Two varieties, Burley 21 and Ky 10, were grown under the three management systems (outlined in Table 1) in 1/4 acre non-replicated plots at five locations in Kentucky in 1966 and at seven locations in 1967. A three-year or older sod was selected at each location. Phosphorus …

Control Of Black Root Rot In Dark Tobacco, Glenn B. Collins, Paul D. Legg, C. C. Litton

Agronomy Notes

Reports of the increasing prevalence of black root rot in the areas where dark tobacco types are grown has triggered an accelerated effort from the tobacco research staff to develop and release additional varieties with high resistance to this disease. The high level of resistance to black root rot found in Nicotiana debneyi (an Australian species) is being used as the source of resistance in the breeding program.

What Happens To Fertilizer Nitrogen In The Soil?, W. O. Atkinson, John L. Ragland

Agronomy Notes

What happens to the nitrogen a farmer applies as fertilizer each spring?

First, let us consider the forms of nitrogen normally applied, and then attempt to trace what happens to the nitrogen once it is added to the soil. The average complete fertilizer contains approximately 70 percent of its nitrogen in the ammonium nitrogen form (NH4), about 10 percent in the urea form (this is quickly converted to ammonium nitrogen), and the remaining 20 percent in the nitrate nitrogen form (NO₃) .

Fertilizer-Insecticide Mixtures On Corn, R. A. Scheibner, George D. Corder

Agronomy Notes

Soil fertility and insects are major factors that affect corn yields. The proper kinds and amounts of fertilizers and insecticides when used properly will make corn production more economical on fields where either or both are needed.

Nitrogen Rates And Population Studies On Corn, S. H. Phillips

Agronomy Notes

John Watts and C. E. Wyatt, Extension Agronomists in the Purchase Area, have conducted nitrogen rates and population studies on corn for several years. The following data relative to these variables are reported from the 1967 tests.

Kenblue Kentucky Bluegrass, Robert C. Buckner

Agronomy Notes

Since the early 19th century the Blue Grass Region of Kentucky has had a worldwide reputation for its Kentucky bluegrass (Poa pratensis L.) As early as 1835, people from adjoining states visited the region to see its luxuriant fields and to learn of the culture and management of this valuable grass. This interest has led to the development of a profitable seed industry in central Kentucky. Kentucky produced the bulk of Kentucky bluegrass seed for the nation during the latter half of the 19th and the first half of the 20th centuries.

Since 1960, foreign importation and competitive production of …

Agronomy Department Tobacco Projects, John Ragland

Agronomy Notes

Here is a list of the 24 tobacco projects (state, USDA, and Smoking and Health Research) being conducted by the Agronomy Department at the University of Kentucky. We hope this will make you more fully aware of the research presently underway on tobacco. Information obtained from these projects will be sent to you from time to time in this newsletter. If you would like more information about these projects, write to the Department of Agronomy, University of Kentucky, Lexington, Ky. 40506.

Tobacco Bed Treatment With Enide 50w, J. W. Herron, J. F. Freeman

Agronomy Notes

Enide 50W is recommended for trial use on tobacco beds for 1968. The results of treatments with Enide in Kentucky in 1967 have been somewhat variable; therefor e, until additional information is obtained and the tobacco grower becomes more experienced in applying the chemical, it should be used on a trial basis.

Results Of Nitrogen Applications On Ohio River Overflow Bottom Areas In Henderson County In 1967, Harold F. Miller

Agronomy Notes

In cooperation with Stuart Brabant, Area Extension Agent in Henderson county , four field trials with nitrogen fertilization on corn were conducted in the Ohio River Bottom area. In two of the trials where corn was followed by corn, nitrogen was applied at the rates of 0, 50, 100, 150 and 200 pounds per acre, with each treatment replicated 4 times. In the two other trials, where corn was grown following soybeans, nitrogen rates of 0, 100 and 200 pounds per acre were replicated 4 times in one field and 3 times in the other.

Planting was delayed until early …

Control Annual Weeds In Tobacco Fields With Herbicides, J. F. Freeman

Agronomy Notes

In the years 1957 to 1967 inclusive, many promising herbicides have been used in Kentucky research trials for controlling annual weeds in tobacco fields. Burley tobacco has been used every year at Lexington, for 4 years at Eden Shale farm in Owen county, and 1 year in McCracken county, while dark air-cured tobacco was used for 4 years at the Western Kentucky Substation, Princeton.

Ecological Study Of The Effects Of Strip Mining On The Microbiology Of Streams, Ralph H. Weaver, Harry D. Nash

KWRRI Research Reports

The microflora of Cane Branch of Beaver Creek in McCreary County, Kentucky, which drains an area that was strip-mined between 1955 and 1959, was studied and compared with that of Helton Branch which drains a comparable area where there has been no mining. Differences include: the establishment of Ferrcbacillus ferrooxidans, for which procedures were developed for direct colony isolation from the stream; fewer saprophytic bacteria; more numerous and more diversified filamentous and unicellular fungi; and characteristic differences in algal flora. Representatives of 42 genera of filamentous fungi were identified. Of these, 21 were isolated only from Cane Branch. Representatives of …

Grass Seed Production, Robert C. Buckner, Warren C. Thompson

Agronomy Notes

Producing cool season grass seed crops has historically been a profitable venture on Kentucky farms.

When growing maximum yields of grass seed, the pH level should be maintained between 6.0 and 7.0, when the recommended rates of limestone are used, and when phosphate and potash are maintained at medium-to-high levels (based on a soil test). Similarly, grass should be grown in pure stands. Weeds and insects must be controlled to prevent yield reduction.

Following seed harvest, excess herbage should be removed, preferably by grazing. All cool season grasses can be grazed until growth stops in the late fall or early …

Response Of Corn To Broadcast Applications Of Zinc, Harold F. Miller

Agronomy Notes

Where zinc deficiency in corn occurs on Kentucky soils it has been corrected by applying 3 to 6 pounds of elemental zinc per acre in the row at planting time. In some areas of the state, corn planters with row fertilizer attachments are not generally used, raising the question as to library the amount of zinc required when broadcast applications are made.

Through the cooperation of Clarence Mitchell, Area Extension Specialist, a field was located where the 1966 corn crop showed zinc deficiency. Since the field was to be planted in corn (Connecticut 860) in 1967, a field trial with …

Soil Surveys In Kentucky, Harry Hudson Bailey, Robert L. Blevins

Agronomy Notes

Forty-one Kentucky counties have been surveyed and the results published, using the classification schemes of the U. S. Department of Agriculture. These counties and the field survey dates are : Adair (1961) , Bath (1959), Caldwell (1962), Calloway (1937), Christian (1912), Clark (1961), Elliott (1961), Fayette (1931), Fulton (1961). Garrard (1921), Graves (1941), Henderson (1963), Jefferson (1962), Jessamine (1915) , Logan (1919), McCracken (1905), Madison (1905), Marshall (1938), Mason (1903), Mercer (1930), Metcalfe (1962), Muhlenberg (1920), Rockcastle (1910), Scott (1903), Shelby (1916), Union (1902), Warren (1904).

Breeding Tobacco Varieties, Paul D. Legg

Agronomy Notes

The principal objectives in breeding tobacco are yield, field and handling characteristics, disease resistance, and quality. Of these objectives, major emphasis has been placed on breeding disease-resistant varieties. Resistant varieties have provided one of the most effective means of combating many of the pathogens that attack the tobacco plant. However, the transfer of genes for disease resistance into susceptible varieties has been accompanied in many cases by other characteristics which are undesirable. It is often a difficult task to combine acceptable type, yield, and quality with desired factors for disease resistance into a single variety.

Strongly Acid Soil Must Be Limed For Corn, Harold Miller

Agronomy Notes

The necessity of liming strongly acid soils that will be planted in corn is well illustrated in a demonstration conducted by Harold Vaught, Area Extension Agent in Adair County.

A field that was well fertilized with nitrogen, phosphorus, and potassium produced low corn yields in 1966. Analysis of a soil sample from the field showed that it was strongly acid soil. (Similar conditions have been reported by many farmers throughout the state in recent years.) Since this field was to be planted in corn again in 1967, a liming demonstration was planned .

Fertilizing No-Tillage Corn And Soybeans, George D. Corder

Agronomy Notes

Planting corn and soybeans in sod (commonly referred to as "no-tillage" planting) is increasing in parts of Kentucky, and interest in this practice in other parts of the state is growing.

One question is often asked: 'What is the best method of liming and fertilizing no-tillage corn and soybeans?"

Since no-tillage planting is a comparatively new practice, only a limited amount of research on methods of fertilization has been done. However, research designed to find out how well plants can recover phosphorus and potassium applied on the surface of the soil will be started by the Department of Agronomy at …

Use Of Wild Species In Developing Varieties, Glenn B. Collins

Agronomy Notes

The familiar plant known as tobacco has the more technical name of Nicotiana tabacum L. It belongs to a family of plants called the Solanaceae or Nightshade family. This family includes many familiar species besides tobacco: tomato, potato, bitter sweet, horse-nettle, ground-cherry, jimsonweed, henbane, and petunia, to mention only a few. In addition to these more distant relatives of tobacco, there are approximately 65 Nicotiana species. Morphologically, the Nicotiana species are very diverse, ranging from those resembling tobacco to the extreme types that look more like cabbage. The species are widespread geographically, with a particularly large concentration in South and …

Marketing Burley Tobacco, Ira E. Massie

Agronomy Notes

When your tobacco has been stripped, sort it (on the farm) into its respective groups. Sort in daylight or under fluorescent lighting, never by yellow (muzda) electric or lantern light.

After the sticks of tobacco have been carefully sorted and checked, they should be packed on the truck in the following order: first, the sticks of the lowest quality, then the flyings, then the next quality, etc. Next load the high quality lugs. The leaf is then loaded, beginning with that of the highest quality and then in the order of quality to the lowest.

Using Birdsfoot Trefoil In Kentucky Pastures, W. C. Templeton Jr., C. F. Buck, D. W. Wattenbarger

Agronomy Notes

Birdsfoot trefoil (Lotus corniculatus L.) is an excellent pasture legume in the Corn Belt and in northeast United states . It has usually been considered too poorly adapted to Kentucky to merit trial by the farmers. Observations and grazing results in Woodford county during the last 14 years, however, indicate that this view is no longer valid.

A grazing trial was established in 1954, with birdsfoot trefoil and Kentucky bluegrass as one of three mixtures used. Trefoil was seeded alone in the spring, and an excellent stand was obtained. Bluegrass was drilled in the established trefoil in September 1954. There …

1967 Recommended Small Grains-Planting Dates, Varieties, And Description, V. C. Finkner, S. H. Phillips

Agronomy Notes

Wheat

Planting Dates - - - September 15 to October 20
Varieties - - - - - Benhur, Knox 62, Monon, Red Coat

Barley

Planting Dates - - - September 15 to October 20
Varieties - - -- - Barsoy, Datyon, Harrison, Kenbar, Will

Oats (Fall varieties)

Planting Dates - - - August 20 to October 1
Varieties - - - - - Dubois and Nor line

Certified Seed Of Kenblue Kentucky Bluegrass Seed Available, Department Of Agronomy, College Of Agriculture, University Of Kentucky

Agronomy Notes

A limited quantity of certified seed of Kenblue, a new variety of Kentucky bluegrass, will be available this fall. Kenblue was developed last year and officially released July 31, 1967 by the University of Kentucky and the USDA-ARS.

Kenblue is more insect- and disease-resistant than any of the other named varieties of bluegrass . Its adaptability to Kentucky conditions is also much higher, because Kenblue was developed from seed taken from 12 farms in seven Central Kentucky counties where bluegrass is normally grown for seed purposes . In each case, fields from which the seed was taken had been in …

Barsoy-A New Winter Barley, V. C. Finkner, S. H. Phillips

Agronomy Notes

The early maturity of Barsoy winter barley will fill a gap in the maturity dates of the barley varieties presently recommended. Double cropping of small grain and wheat has grown to the extent that 30,000 to 40,000 acres in Kentucky grow two crops each year. This practice will continue to develop and become more important on grain farms. The early maturity characteristic of Barsoy will allow an earlier planting of soybeans than will other barley varieties.

Apply Fertilizer And Limestone This Fall, George D. Corder

Agronomy Notes

As farmers push towards more economical crop production, fertilizer and limestone use will increase. If Kentucky farmers continue to help feed the world, the rate of increase will accelerate during the next decade .

Comparison Of Recommended Wheat Varieties, S. H. Phillips

Agronomy Notes

No abstract provided.

What's Wrong With The Red Clover This Year?, Warren C. Thompson, Norman L. Taylor

Agronomy Notes

Red clover looks sick in a lot of fields this year. "Why?" is one of the most often asked questions here in the department.

First, we must not overlook the effect of the early growth followed by the hard freezes in March. This unusual condition started a chain reaction that made the insects and diseases more important in reducing stands. The early start, followed by the freeze, caused unseasonable maturity or false dormancy. Thus, many stands stopped growing at 6" to 10" heighths. Many stands were thinned and some killed by this freeze.

Where the first harvest has already been …

Make Good Hay From Perennial Grasses, George D. Corder

Agronomy Notes

Good quality hay can be made from the perennial grasses if they are fertilized properly and mowed while in the boat stage.

The alfalfa weevil has reduced yields of alfalfa in Kentucky to the point where some farmers will be short of hay , Many of these fields have a good stand of grass . Some of the hay shortage can be eased by applying nitrogen fertilizers on these fields.

New Bluegrass Variety Kenblue, Robert C. Buckner, Paul B. Burrus Jr.

Agronomy Notes

The production of certified seed of Kenblue, a new Kentucky-grown bluegrass, may start this fall. It will be the first time a Kentucky-grown bluegrass of what the scientists call "known origin" is available to farmers and home owners.

It will be much more desirable for Kentucky use than the other standard varieties such as Merion, Delta, or Newport. All of these are considered "good" varieties, but not under Kentucky conditions. These are more susceptible to diseases than the new variety, Kenblue.

Notice Of Release Of Custer Soybean, J. F. Shane, S. H. Phillips

Agronomy Notes

The Crops Research Division, Agricultural Research Service, and the cooperators listed above announce the release of a new phytophthora and cyst nematode-resistant soybean variety named Custer. Custer is the second cyst nematode-resistant variety to be released. It is earlier than the previously released variety Pickett.

Enide Recommended For Trial Use On Tobacco Beds, J. W. Herron, J. F. Freeman

Agronomy Notes

Enide 50W has now been cleared for use on tobacco beds. Treatments with Enide on tobacco beds in mid to late March. at time of seeding have given satisfactory weed control in experimental plots during the past 2 years. No injury or reduction in stand of tobacco plants was observed on plots treated at this time. Reduction in stand of plants did occur in plots treated in late fall. and there are some indications that there may be a reduction in stand from early treatments in February. To insure best results. the chemical should be applied evenly over the treated …