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Northeast Research Station Watertown, South Dakota Annual Progress Report, 1965, Agricultural Experiment Station, Agronomy Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1965 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University. This report includes information on the 1965 crop season, fertility and cultural practice experiments, corn and sorgham forage studies, small grain trials, corn performance trials, grain sorghum and soybeans, wheat and flax strain test, weed research, crop disease control.

Controlling Chickweed And Henbit In Alfalfa, J. F. Freeman

Agronomy Notes

Chickweed and henbit weeds are bad in alfalfa this fall. DNBP (premerge or Sinox PE) sprayed on infested fields at rate of 1 to 3 qt in 20 to 40 gallons of water per acre may destroy the weeds without harm to the dormant alfalfa. Use the higher rate if chickweed is matted on the ground or if henbit is heavy in the stand. Spray only when the temperature is 55 to 60 degrees or warmer and fair weather is predicted for 12 hours after treatment. The 1-qt rate applied in early fall when chickweed is very small (not until …

South Central Research Farm Annual Progress Report, 1965, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the December 1965. report for the Agricultural Experiment Station at the South Central Research Farm. This report includes weather data, small grain testing, specialty crop testing, sorghum testing, legume and grass testing, management, tillage and cultural practices, and crop disease control.

Bulletin No. 15: The Flora Of Connecticut Arboretum, William A. Niering, Richard H. Goodwin, Sara C. Manwell

Bulletins

Included annotated checklist of over 850 species and also article on vegetation of the Arboretum. 64 pp.

Southeast South Dakota Experiment Farm Annual Progress Report, 1965, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This fifth annual report of the research program at the Southeast South Dakota Experiment Farm is presented herewith. The report has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota, but it will be useful to many outside the area. The results shown are not necessarily complete nor conclusive. Interpretations given are tentative because additional data resulting from continuation of these experiments may result in conclusions different from those based on any one year.

Controlling Annual Grasses In Spring Seeded Alfalfa With Eptc, J. F. Freeman

Agronomy Notes

Many Kentucky farmers plan to sow alfalfa in early spring on a prepared seed bed. A main objective is to avoid or reduce most of the damage of alfalfa weevil on the first-year crops . Eptam 6 E sprayed on the prepared seed bed at rate of 2 quarts in 10 to 20 gallons of water per acre and disked in 3-4 inches deep right behind the sprayer usually gives good control of annual grass weeds and some control of broadleaf weeds as well. A second disking, crosswise to the first, is needed for thorough mixing of the herbicide with …

Genetic Control Of The Metabolism Of O-Hydroxycinnamic Acid Precursors In Melilotus Alba, Francis A. Haskins, T. Kosuge

Department of Agronomy and Horticulture: Faculty Publications

In sweetclover (Melilotus aIba Desr.) the cis and trans isomers of o-hydroxycinnamic acid occur primarily as the respective β-D-glucosides (Rudorf and Schwarze 1958; Kosuge 1961; Haskins and Gorz 1961a; Stoker and Bellis 1962). The review of Brown (1963) summarizes evidence that these glucosides are formed via the following pathway: phenylalanine (formed from shikimic acid) → trans-cinnamic acid → trans-o-hydroxycinnamic acid (o-coumaric acid) trans-β-D-glucosyl-o-hydroxycinnamic acid (o-coumaric acid glucoside) → cis-β-D-glucosyl-o-hydroxycinnamic acid (coumarinic acid glucoside). Sweetclover plants of the Cu Cu genotype contain substantial amounts of both …

Ultraviolet-Induced Isomerization Of Β-D-Glucosyl O-Hydroxycinnamic Acid On Filter Paper, Andris Kleinhofs, Francis A. Haskins, Herman J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Coumarinic acid glucoside (β-D-glucosyl cis-o-hydroxycinnamic acid) and o-coumaric acid glucoside (β-D-glucosyl &am-o-hydroxycinnamic acid) are readily detected as absorbing areas on filter paper chromatograms exposed to ultraviolet light at wavelengths near 260 mp. Long wavelength ultraviolet radiation is frequently used to detect fluorescent compounds closely related to these two glucosides. The foregoing facts prompted this investigation concerning the influence of both long and short wavelength ultraviolet light on small amounts of coumarinic acid glucoside and o-coumaric acid glucoside, air-dried on filter paper strips. Ultraviolet-induced interconversion of these two isomers in aqueous solutions is well known.

Where Is Moly?, A. L. Hatfield

Agronomy Notes

Is moly in hiding or has it gone down the river? Recent tests in Graves County suggest that it is probably just in hiding.

Moly (molybdenum) is of importance to Kentucky farmers because of its unique relation to soil acidity and legume growth. Many other trace or minor elements necessary for plant growth are most available to crops under acid soil conditions. Molybdenum becomes more available as the soil acidity approaches neutrality.

Agronomy Notes, No. 32, S. H. Phillips

Agronomy Notes

Silo Fillers Disease, caused by nitrogen dioxide, was discussed in a joint Agronomy and Pharmacology release. Dr. Mark Luckens, College of Pharmacy, has prepared strips of potassium iodide - starch test paper to assist in detecting this deadly gas in silos and feeding areas. These strips are small (5/8" x - 2") and change to a blue color when in contact with nitrogen dioxide. We have 300 strips available for use by County Agents.

Agricultural Limestone In Kentucky, George D. Corder

Agronomy Notes

Kentucky farmers invested about $6 million in agricultural limestone in 1964. However, much more lime than this should have been used if farmers get the most economical crop production and the most efficient use of fertilizers that are applied or the fertility that is already in the soil.

Plant Communities: Native Vegetation Of Nebraska, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

Thanks to our rapid increase in population ,and the largely indiscriminate spread of urban, industrial, and transport facilities, the time is not far distant when land-use capabilities must receive much more attention than they have enjoyed. Natural, that is pre-settlement, vegetation, integrating as it did the manifold factors of environment, is un-excelled as a guide to potential land use.

Small Grain Planting Information, S. H. Phillips

Agronomy Notes

No abstract provided.

Topdress Alfalfa This Fall, George D. Corder

Agronomy Notes

Good stands of alfalfa should be fertilized even though the alfalfa weevil is causing some concern. This fall, say after the last harvest, is a good time to topdress with phosphate, potash and boron fertilizers.

Two New Species Of Leafblight Fungi On Kalmia Latifolia, F. A. Wolf, A. R. Cavaliere

Biology Faculty Publications

The evergreen shrub, Kalmia latifolia L., commonly known as mountain laurel, calico bush, or sheep-kill, grows widely on rocky, acid soils in the eastern United States. Whether growing in its natural habit or in cultivation, mountain laurel appears to be equally subject to attack by fungi. The following account characterizes and discusses two of these fungi. One of them has not been described previously and additional observations have been made regarding the developmental morphology of the other one.

Both pathogens are Pyrenomycetes, one a Physalospora and the other a Diaporthe. Each produces a leafblight disease. Tiny brown discolorations on young …

1964 Drought In Connecticut, The, Byron E. Janes, Joseph J. Brumbach

Storrs Agricultural Experiment Station

No abstract provided.

Soil Test Summary For 1964 Now Available, Harold F. Miller

Agronomy Notes

The number of soil samples tested in soil testing laboratories under the supervision of the College of Agriculture in 1964 showed an increase of 6,028 samples. In 1963, 46,444 samples were tested compared to 52,472 in 1964. These figures do not include the thousands of samples tested in commercial laboratories.

Absence Of Dominance Of The B Gene In Influencing Β-Glucosidase Activity In Melilotus Alba, Francis A. Haskins, Herman J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

In sweetclover (Melilotus alba Desr.) the allelic pair designated B/b was originally thought to be concerned with coumarin biosynthesis. Extracts of BB plants were reported to contain substantial amounts of both free and bound coumarin, while extracts of bb plants contained only bound coumarin (Goplen, Greenshields and Baenzinger 1957; Haskins and Gorz 1957), more recently identified as coumarinic acid glucoside (β-D-glucosyl-cis-o-hydroxycinnamic acid) (Kosuge 1961; Stoker and Bellis 1962). The bound-coumarin character behaved as a simple recessive in crosses between bb and BB plants (Goplen, Greenshields and Baenzinger 1957).

Aspen-Elk Relationships On The Northern Yellowstone Winter Range, William J. Barmore Jr.

Aspen Bibliography

No abstract provided.

Soil Surveys In Kentucky, Harry Hudson Bailey

Agronomy Notes

Twenty-two Kentucky counties have been surveyed and published using the classification scheme of the U.S. Department of Agriculture. These counties and the dates of the field survey are: Adair (1961), Bath (1959), Calloway (1937), Christian (1912), Clark (1961), Fayette (1931), Fulton (1961), Garrard (1921), Graves (1941), Jessamine (1915), Logan (1919), McCracken (1905), Madison (1905), Marshall (1938), Mason (1903), Mercer (1930), Muhlenberg (1920), Rockcastle (1910), Scott (1903), Shelby (1916), Union (1902), Warren (1904). The maps and reports on Adair, Bath, Calloway, Clark, Fulton, Graves, Logan, Marshall and Mercer Counties are still available (1965) through: Agronomy Department, University of Kentucky, Lexington. The …

Effect Of Gravity Separation On Cottonseed, Norman Justus, R. H. Loe, J.B. Dick, M. N. Christiansen

All Articles

No abstract provided.

Irrigation And Fertilization Practices For Seed Production From Established Stands Of Side-Oats Grama, D. E. Smika, L. C. Newell

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The objectives of this study of grass seed production were to determine the response of an established stand of a warm-season grass to irrigation and fertilizer practices with regard to the specific practices needed to produce maximum quantity of adequate quality seed per acre. Side-oats grama was chosen for the study because of the availability of adapted varieties.

Forage Sorghums, W. H. Stroube

Agronomy Notes

Wide interest and publicity relative to summer annual grasses has developed with the release, availability and publicity of forage "sorghum-sudan hybrids."

There are many varieties of sorghum-sudan crosses and similar materials currently on the market making intelligent recommendations concerning specific varieties most difficult. Our experience and that of workers in some other states indicate that most of these varieties behave somewhat similarly. One of the best ways to choose a variety in this case, is to buy a variety that you or a neighbor have had favorable experience with and buy from a known reputable dealer.

Appraisal For Combined Pea Aphid And Spotted Alfalfa Aphid Resistance In Alfalfa, W. L. Howe, W. R. Kehr, C. O. Calkins

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Sources of combined resistance to spotted alfalfa and pea aphids were found in Ranger alfalfa and its parental strains, foreign plant introductions, clones and their progenies. Ranger alfalfa appeared to be a good source for selection of plants with resistance to both aphids.

Biochemical Changes During The Growth Of Fungi: Ii. Ergosterol And Fatty Acids In Penicillium Atrovenetum, David Gottlieb, James L. Van Etten

Department of Plant Pathology: Faculty Publications

Changes in the lipid constituents of Penicillium atrovenetum were studied during the growth and development of this fungus. The stages in development, as measured by the dry weight, were divided into four phases: lag, log, stationary, and death. The total fatty acids on a dry-weight basis increased from a minimum in the spores to a maximum near the end of the log phase of growth. The major fatty acids were palmitic, stearic, oleic, and linoleic. Myristic, pentadecanoic, palmitoleic, heptadecanoic, linolenic, arachidic, and heptadecenoic acids, together with two unidentified components, were also present in the fatty acid fraction. Compared to ungerminated …

Seed And Phenological Studies With Shattercane, O. C. Burnside

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This research deals with the phenology and life history of shattercane, studies on seed dormancy and germination characteristics, and a description of the natural variability that occurs within this weedy species. Detailed information is needed on this weed before an intelligent approach can be made toward its control. These studies also may serve to familiarize people with shattercane and make them cognizant of its potential as a weed.

Cacodylic Acid As A Silvicide, Maurice W. Day

Aspen Bibliography

This report deals with the effectiveness of cacodylic acid (dimethylarsenic acid) as a silvicide for undesirable trees. Cacodylic acid has been used successfully as an herbicide for the destruction of grasses and weeds. Experimental work with this material was begun during the 1963 field season, and continued during 1964, to permit complete evaluation of the results. It appears that cacodylic acid has considerable potential as a silvicide.

Density-Gradient Centrifugation: Non-Ideal Sedimentation And The Interaction Of Major And Minor Components, Myron K. Brakke, J. M. Daly

Department of Plant Pathology: Faculty Publications

A small amount of southern bean mosaic virus was contained in a narrow zone after density-gradient centrifugation, but in a much wider zone after centrifugation with a large amount of a second virus. Zone-spreading of a major component by non-ideal sedimentation in density-gradient centrifugation can cause zone spreading of a minor component that the major component overlaps.

Mechanisms Controlling The Formation And Persistence Of The Corpus Luteum, L. L. Anderson, R. M. Melampy

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Mechanisms which control formation of corpora lutea during the estrous cycle, and particularly factors affecting their persistence and regression in various reproductive stages, have been of considerable interest to physiologists concerned with developing methods for control of the estrous cycle in domestic animals. Some recent reviews on control of ovarian function are those by Chester Jones and Ball (30), Anderson et al. (9) and Short (121).

Comments And Conclusions Concerning Studies On Estrous Control In Domestic Animals, H. H. Cole

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Let me allay at once any apprehension you may have that I am about to recapitulate all that has been said during the past two days. Redundancy at this time would merely accentuate your current soporific state. Thus I shall take advantage of the prerogative of seniority to modify the title of my talk to "Comments and conclusions concerning studies on estrous control in domestic animals."