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Plant Sciences

1969

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Cypripedium Parviflorum Var. Pubescens (Willd.) Knight, John E. Ebinger Dec 1969

Cypripedium Parviflorum Var. Pubescens (Willd.) Knight, John E. Ebinger

Specimens by Name

No abstract provided.


Northeast Research Station Watertown, South Dakota Annual Progress Report, 1969, Agricultural Experiment Station, Plant Science Department Dec 1969

Northeast Research Station Watertown, South Dakota Annual Progress Report, 1969, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1969 annual progress report for the Northeast Research Station in Watertown, Garden CIty, and Whetstone Valley, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and South Dakota State University. This report includes information on the 1969 crop season, fertility and cultural practice experiments, soil and water demonstrations, high nitrogen experiments, small grain, corn and sorghun trials, wheat and flax tests, insect control on potatoes, weed research, soybean and sorghum breeding, weed research, crop disease control.


Hatching Of Sod Webworm Eggs In Relation To Low Temperatures, E. A. Heinrichs, Ellis L. Matheny Dec 1969

Hatching Of Sod Webworm Eggs In Relation To Low Temperatures, E. A. Heinrichs, Ellis L. Matheny

Department of Entomology: Faculty Publications

Eggs of Chrysoteuchia topiaria (Zeller), Crambus pascuellus floridus (Zeller), and Pediasia trisecta (Walker) were exposed to temperatures of 25, 15, 10, 4, and –10°C. Only those of P. trisecta hatched after exposure to 4°C for 30 days, while none hatched after exposure to –10°C. Eggs of none of the species hatched after exposure to 4 and 10°C for 60 days. Pre-exposure and post-exposure conditioning had no significant effect on percent hatch of P. trisecta eggs, while length of exposure period had a significant effect.


The Effect Of Nitrogen Rate And Method Of Sucker Control On Dry Matter Accumulation In Different Plant Parts Of Burley 21 Tobacco, J. L. Sims, W. O. Atkinson Dec 1969

The Effect Of Nitrogen Rate And Method Of Sucker Control On Dry Matter Accumulation In Different Plant Parts Of Burley 21 Tobacco, J. L. Sims, W. O. Atkinson

Agronomy Notes

Earlier research has shown that higher leaf yields of burley tobacco result from topping and controlling sucker (axillary bud) growth. Suckering practices which provide the greatest degree of sucker control generally result in highest leaf yields . Chemically suckering with maleic hydrazide (MH-30) and other chemicals provides for a higher degree of control than most hand sucker ing practices although hand sucker ing at frequent intervals may produce leaf yields comparable to those from use of maleic hydrazide. High leaf yields resulting from a high degree of sucker control has been attributed to the elimination of the use of photosynthate …


Southeast South Dakota Experiment Farm Annual Progress Report, 1969, Agricultural Experiment Station Dec 1969

Southeast South Dakota Experiment Farm Annual Progress Report, 1969, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This ninth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. The results shown are not necessarily complete or 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.


South Central Research Farm Annual Progress Report, 1969, Agricultural Experiment Station, Plant Science Department Dec 1969

South Central Research Farm Annual Progress Report, 1969, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1969 report for the Agricultural Experiment Station at the South Central Research Farm. This report includes weather data, small grain variety testing, specialty crop testing, sorghum testing, grass testing, management, tillage, and cultural practices, fertilizer studies, and crop diseases and their control.


Protein Synthesis During Fungal Spore Germination. Iv. Transfer Ribonucleic Acid From Germinated And Ungerminated Spores, James L. Van Etten, R. Kent Koski, Mahmoud El-Olemy Dec 1969

Protein Synthesis During Fungal Spore Germination. Iv. Transfer Ribonucleic Acid From Germinated And Ungerminated Spores, James L. Van Etten, R. Kent Koski, Mahmoud El-Olemy

Department of Plant Pathology: Faculty Publications

Transfer ribonucleic acid (tRNA) fractions isolated from germinated and ungerminated spores of Botryodiplodia theobromae and Rhizopus stolonifer had acceptor activity for all 20 amino acids commonly found in protein, when tested with an enzyme fraction from germinated spores. Accordingly, it is unlikely that the absence of tRNA for a particular amino acid limits protein synthesis in fungal spores.


Sweetclover Weevil Feeding Stimulants: Isolation And Identification Of Glucose, Fructose, And Sucrose, W. R. Akeson, H. J. Gorz, Francis A. Haskins Dec 1969

Sweetclover Weevil Feeding Stimulants: Isolation And Identification Of Glucose, Fructose, And Sucrose, W. R. Akeson, H. J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

The water-soluble fraction of Melilotus leaves previously referred to as Stimulant A was further fractionated by preparative paper chromatography into three factors, each having a stimulatory effect on sweetclover weevil feeding. The three factors, designated Stimulant A1, A2, and A3, were identified as sucrose, glucose, and fructose, respectively, by co-chromatography with known sugars on cellulose-coated thin-layer plates. Silver nitrate, anisidine phthalate, and anthrone were employed as detection agents. The isolated compounds and corresponding reagent grade sugars were identical in chromatographic and chemical behavior, as well as in feeding stimulant activity. Sucrose stimulated the greatest …


Vitis Riparia Michx., Dan K. Evans Nov 1969

Vitis Riparia Michx., Dan K. Evans

Specimens by Name

No abstract provided.


Summary Of Fertilizer Use And Estimated Use Of Plant Nutrients On Tobacco, Corn, Hay And Pastures In Kentucky, Kenneth L. Wells Nov 1969

Summary Of Fertilizer Use And Estimated Use Of Plant Nutrients On Tobacco, Corn, Hay And Pastures In Kentucky, Kenneth L. Wells

Agronomy Notes

Nearly 650, 000 tons of fertilizer were used by Kentucky farmers during the first half of 1969. Plant food content (N+P2O5 + K2O) was 38%, or nearly 247,000 tons. Slightly over half (58%) was sold in bagged, one-third (33%) in bulk, and 8% in fluid form. Mixtures made up 70% of the total tonnage, and materials made up 30%. The statistics tabulated below show a more detailed breakdown of the fertilizer tonnage used.


Acer Saccharinum L., John E. Ebinger Oct 1969

Acer Saccharinum L., John E. Ebinger

Specimens by Name

No abstract provided.


Acer Saccharum Marshall, John E. Ebinger Oct 1969

Acer Saccharum Marshall, John E. Ebinger

Specimens by Name

No abstract provided.


Acer Saccharum Marshall, John E. Ebinger Oct 1969

Acer Saccharum Marshall, John E. Ebinger

Specimens by Name

No abstract provided.


Morus Alba Var. Alba, John E. Ebinger Oct 1969

Morus Alba Var. Alba, John E. Ebinger

Specimens by Name

No abstract provided.


Acer Rubrum Subsp. Drummondii (Hook. & Arn. Ex Nutt.) E. Murray, John E. Ebinger Oct 1969

Acer Rubrum Subsp. Drummondii (Hook. & Arn. Ex Nutt.) E. Murray, John E. Ebinger

Specimens by Name

No abstract provided.


Spiranthes Cernua (L.) Rich., Ben L. Dolbeare Oct 1969

Spiranthes Cernua (L.) Rich., Ben L. Dolbeare

Specimens by Name

No abstract provided.


Cannabis Sativa L., John E. Ebinger Oct 1969

Cannabis Sativa L., John E. Ebinger

Specimens by Name

No abstract provided.


Fraxinus Nigra Pott, John E. E. Ebinger Oct 1969

Fraxinus Nigra Pott, John E. E. Ebinger

Specimens by Name

No abstract provided.


Fraxinus Nigra Pott, John E. E. Ebinger Oct 1969

Fraxinus Nigra Pott, John E. E. Ebinger

Specimens by Name

No abstract provided.


Lysimachia Vulgaris L., John E. Ebinger Oct 1969

Lysimachia Vulgaris L., John E. Ebinger

Specimens by Name

No abstract provided.


Nesting Ecology Of Raptorial Birds In Central Utah, Joseph R. Murphy, Franz J. Camenzind, Dwight G. Smith, J. Bradford Weston Oct 1969

Nesting Ecology Of Raptorial Birds In Central Utah, Joseph R. Murphy, Franz J. Camenzind, Dwight G. Smith, J. Bradford Weston

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


Front Matter, Vol. 10 No. 4 Oct 1969

Front Matter, Vol. 10 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


End Matter, Vol. 10 No. 4 Oct 1969

End Matter, Vol. 10 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


Influence Of Developmental Stage Of Melilotus Infesta Leaves On Resistance To Feeding By The Sweetclover Weevil, W. R. Akeson, G. L. Beland, Francis A. Haskins, H. J. Gorz Oct 1969

Influence Of Developmental Stage Of Melilotus Infesta Leaves On Resistance To Feeding By The Sweetclover Weevil, W. R. Akeson, G. L. Beland, Francis A. Haskins, H. J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Leaves of 6- to 8•week old Melilotus infesta plants contained progressively higher levels of nitrate as the leaves developed from the tightly pinched to the fully expanded stage. In weevil feeding tests on water extracts of these leaves a close relationship was found between actual feeding and the feeding predicted on the basis of nitrate content. At a given level of nitrate, extracts of young M. infesta leaves were less attractive to the weevil than were extracts of young M. officinalis leaves. Leaves of mature M. infesta plants contained very little nitrate, but water extracts of such leaves remained unattractive …


Genetic Studies Of Induced Mutants In Melilotus Alba. I. Short-Internode Dwarf, Curled Leaf, Multifoliolate Leaf, And Cotyledonary Branching, B. G. Gengenbach, Francis A. Haskins, H. J. Gorz Oct 1969

Genetic Studies Of Induced Mutants In Melilotus Alba. I. Short-Internode Dwarf, Curled Leaf, Multifoliolate Leaf, And Cotyledonary Branching, B. G. Gengenbach, Francis A. Haskins, H. J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Information obtained from the F1, F2, and F3 generations of crosses between the normal annual M. alba progenitor line and the four mutants, short-internode dwarf, curled leaf, multifoliolate leaf, and cotyledonary branching, indicates that each character is conditioned by a single pair of alleles. The multifoliolate leaf character is dominant over the normal phenotype; the other three mutant characters are recessive. The symbols dw, cl, Mf, and cb are proposed as designations for the respective mutant genes.


Viola Striata Aiton, John E. Ebinger Sep 1969

Viola Striata Aiton, John E. Ebinger

Specimens by Name

No abstract provided.


Acer Negundo L., John E. Ebinger Sep 1969

Acer Negundo L., John E. Ebinger

Specimens by Name

No abstract provided.


Acer Negundo L., John E. Ebinger Sep 1969

Acer Negundo L., John E. Ebinger

Specimens by Name

No abstract provided.


Acer Saccharum Marshall, John E. Ebinger Sep 1969

Acer Saccharum Marshall, John E. Ebinger

Specimens by Name

No abstract provided.


Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger Sep 1969

Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger

Specimens by Name

No abstract provided.