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Full-Text Articles in Life Sciences
Northeast Research Station Watertown, South Dakota Annual Progress Report, 1987, Agricultural Experiment Station, Plant Science Department
Northeast Research Station Watertown, South Dakota Annual Progress Report, 1987, Agricultural Experiment Station, Plant Science Department
Agricultural Experiment Station and Research Farm Annual Reports
This is the 1987 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 Plant Science Department. This report includes information on the 1987 crop season, including precipitation data, grain and wheat research and disease control, corn breeding, sunflower breeding, insect control, alfalfa test, oats research, and information on the economics of alternative farming.
The Prairie Naturalist Volume 19, No. 4. December 1987
The Prairie Naturalist Volume 19, No. 4. December 1987
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
BREEDING BIRDS AND VEGETATION STRUCTURE IN WESTERN NORTH DAKOTA WOODED DRAWS ▪ C. A. Faanes
PRODUCTIVITY OF RED-WINGED BLACKBIRDS IN SOUTH DAKOTA ▪ J. F. Besser, O. E. Bray, J. W. De Grazio, J. L. Guarino, D. L. Gilbert, R. R. Martinka, and D. A. Bysart
DENSITY AND DISTRIBUTION OF THE MOUNTAIN PLOVER ON THE CHARLES M. RUSSELL NATIONAL WILDLIFE REFUGE ▪ S. L. Olson-Edge and W. D. Edge
EFFECT OF CALCULATION TECHNIQUE ON THE ESTIMATION OF LEAF AREA IN A MIXED …
The Relationship Of Applied Rock Phosphate On The Growth Of Sweet Corn, Deborah A. Sutherland
The Relationship Of Applied Rock Phosphate On The Growth Of Sweet Corn, Deborah A. Sutherland
Natural Resources Management and Environmental Sciences
Banding is a more intense application of fertilizers than broadcasting. Literature reviews have indicated that a higher amount of phosphorus in the root zone can enhance the growth and development of seedlings (Amin and Zaidi, 2004). Field trials on Sandy and Loam soils were conducted to test the effects of rock phosphate on sweet corn. These effects were investigated by studying the height, dry weight and phosphorus uptake of plants grown in soils banded with 0-90 lb P2O5/AFS. The results were moderate increases in plant height with applied rock phosphorus. The laboratory studies entailed oven drying forty day old corn …
Disease And Insect Resistance Screening Of The National Subterranean Clover Collection, D J. Gillespie, M J. Barbetti
Disease And Insect Resistance Screening Of The National Subterranean Clover Collection, D J. Gillespie, M J. Barbetti
Division of Plant Research : Technical Report Series
This project commenced in May 1981 primarily to identify sources of resistance to clover scorch (Kabatiella caulivora), root rots (Pythium, Fusarium and Rhizoctonia spp.), and bluegreen aphid (Acyrthospihon kondoi) in the National Subterranean Clover Collection. Screening for resistance to red legged earthmite (Halotydeus destructor) was initiated part way through the project. Since commencement approximately 5,250 introductions and crossbred clover shave been tested for resistance to clover scorch, 420 for resistance to rootrots, 690 for resistance to blue green aphid and 160 for resistance to redlegged earth mite (R.L.E.M.). A large number of clovers possessing resistance to clover scorch have been …
Factors Affecting Frost Damage To Wheat In Western Australia, S P. Loss
Factors Affecting Frost Damage To Wheat In Western Australia, S P. Loss
Division of Plant Research : Technical Report Series
It may at first seem strange that precious research funds are being channelled into a project concerned with frost damage in a country where high temperatures and moisture stress limit the growth of plants for a large portion of the year. But cereal crops are only grown in the temperate zones of the continent during winter and spring when they may be exposed to low diurnal temperatures. In many areas cold damage is irregular and rare,however it limits yields not only by causing actual damage but also by restricting the most effective period for flowering. For muck of the Australian …
Southeast South Dakota Experiment Farm Annual Progress Report, 1987, Agricultural Experiment Station
Southeast South Dakota Experiment Farm Annual Progress Report, 1987, Agricultural Experiment Station
Agricultural Experiment Station and Research Farm Annual Reports
This twenty-seventh 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. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.
Isolation And Identification Of The Major Component Of Setal Exudate From Corythucha Ciliate, William Lusby, James Oliver, John W. Neal Jr., Robert Heath
Isolation And Identification Of The Major Component Of Setal Exudate From Corythucha Ciliate, William Lusby, James Oliver, John W. Neal Jr., Robert Heath
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Clear microdroplets are associated with secretory, abdominal setae on nymphs of the sycamore lace bug Corythucha ciliata. The major component of this exudate material has been identified as 3,6-dihydroxy-2-[1-oxo- lO(E)-terradecenyl]cyclohex-2-en- 1-one [1]. Preliminary observations of these insects suggest a defensive function for these exudate droplets.
West River Agricultural Research And Extension Center Progress Report, 1987, Agricultural Experiment Station
West River Agricultural Research And Extension Center Progress Report, 1987, Agricultural Experiment Station
Agricultural Experiment Station and Research Farm Annual Reports
This is the 1987 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary for all west river counties involved in research, small grain variety trials, information on oilseed crops, feed grain crops, forage crops, management, tillage and cultural practices, and numerous weed control research projects.
Verbena Stricta Vent., L. Horton
Phyla Lanceolata (Michx.) Greene, L. Horton
Avicennia Germinans (L.) Stearn, R. Dale Thomas
Avicennia Germinans (L.) Stearn, R. Dale Thomas
Specimens by Name
No abstract provided.
Conservation Tillage And Irrigation Effects On Corn Root Development, R. L. Newell, Wallace Wilhelm
Conservation Tillage And Irrigation Effects On Corn Root Development, R. L. Newell, Wallace Wilhelm
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The effects of conservation-tillage practices on the root environment of corn (Zea mays L.) may differ with varying amounts of irrigation. Dryland, 50% irrigation, and 100% irrigation treatments were applied in combination with disc, no-tillage, and a postemergence chisel treatment designed to allow rapid infiltration of irrigation water. The study was conducted during the 1980 growing season at the Nebraska Agricultural Experiment Station near Mead, NE, on a Sharpsburg silty clay loam (fine, montmorillonitic, mesic Typic Argiudolls). Root samples were taken to 1.50 m in 0.15-m increments. Sampling was done at 60 (V8), 77 (V14), and 90 (R2) days …
Potential For Hydrocyanic Acid Poisoning Of Livestock By Indiangrass, Kenneth P. Vogel, H. J. Gorz, Francis A. Haskins
Potential For Hydrocyanic Acid Poisoning Of Livestock By Indiangrass, Kenneth P. Vogel, H. J. Gorz, Francis A. Haskins
Department of Agronomy and Horticulture: Faculty Publications
Hydrocyanic acid or prussic acid poisoning of livestock by sorghums [Sorghum bicolor (L.)Moench] and sudangrasses [Sorghum sudanese (Piper) Stapf] is caused by the digestive liberation of hydrocyanic acid (HCN) from the cyanogenic compound, dhurrin [(S)-p-hydroxymandelonitrile ,β-D-glucopyranoside] found in tissue of these plants. Recent research documented that dhurrin is also present in indiangrass [Sorghastrum nutans (L.) Nash] seed- lings. The purpose of this study was to determine the hydrocyanic acid potential (HCN-p) of forage from established stands of indiangrass. Five cultivars representative of indiangrass germplasm of the Great Plains were sampled during the growing season for 2 years …
Ampelopsis Cordata Michx., John E. Ebinger
Viola Sororia Willd., John E. Ebinger
Samolus Parviflorus Raf., John E. Ebinger
Forestiera Acuminata (Michx.) Poir., John E. Ebinger
Forestiera Acuminata (Michx.) Poir., John E. Ebinger
Specimens by Name
No abstract provided.
Morus Rubra L., John E. Ebinger
Lysimachia Vulgaris L., John E. Ebinger
Acer Saccharum Marshall, L. Horton
Acer Negundo L., L. Horton
A Review Of Machinery For Cropping With Reduced Water Erosion, K J. Bligh
A Review Of Machinery For Cropping With Reduced Water Erosion, K J. Bligh
Resource management technical reports
No abstract provided.
Sfa Gardens Newsletter, Oct 1987, Sfa Gardens, Stephen F. Austin State University
Sfa Gardens Newsletter, Oct 1987, Sfa Gardens, Stephen F. Austin State University
SFA Gardens Newsletters
No abstract provided.
Clonal Foraging In Perennial Wheatgrasses: A Strategy For Exploiting Patchy Soil Nutrients, L. D. Humphrey, D. A. Pyke
Clonal Foraging In Perennial Wheatgrasses: A Strategy For Exploiting Patchy Soil Nutrients, L. D. Humphrey, D. A. Pyke
Aspen Bibliography
1 Foraging by means of plasticity in placement of tillers in response to low- and high- nutrient patches was examined in the rhizomatous wheatgrass Elymus lanceolatus ssp. lanceolatus. Its ability to exploit soil nutrient patches was compared to that of the closely related but caespitose E. lanceolatus ssp. wawawaiensis. 2 Clones of 14 genets of each taxon were planted in boxes consisting of two 30 x 30 cm cells: the 'origin cell' where clones were planted, and the adjacent 'destination cell', with each cell containing soil with either low or high levels of nutrients. 3 The rhizomatous taxon, which can …
Direct Seeding Trees On Farmland In The Western Australian Wheatbelt, J P. Piggott, P H. Brown, M M. Williams
Direct Seeding Trees On Farmland In The Western Australian Wheatbelt, J P. Piggott, P H. Brown, M M. Williams
Resource management technical reports
Field and nursery experiments were conducted to determine suitable species, weed control methods, sowing times and seeding techniques. Sowing time was the most significant variable evident in the field experiments. Trees sown in the winter months of June and July out-performed later sowing times. Early sowing of trees in areas of low seasonal rainfall appears to offer considerable advantages for successful establishment over late sowing.
The Esperance Rotation Trial, Effect Of Rotations On Crop Yields And Soil Fertility, I C. Rowland
The Esperance Rotation Trial, Effect Of Rotations On Crop Yields And Soil Fertility, I C. Rowland
Division of Plant Research : Technical Report Series
This report sets out and summarises data from the Esperance rotation trial.This long-term trial, situated on the Esperance Downs Research Station, looks at various aspects of rotations based on subterranean clover pasture with cereals or sweet lupins as a crop. Data included are yields of the crops both grain and dry matter at anthesis or mid-pod fill also nitrogen content at these two times; pasture production and composition in Spring; clover seed production; weed counts in the crop; soil measurements of total soil nitrogen,organic carbon, mineral nitrogen, pH and extractable potassium are done at thestart of each season.The trial, on …
Verbena Urticifolia L., L. Horton
Vitis Cinerea Noronha, L. Horton
The Prairie Naturalist Volume 19, No. 3. September 1987
The Prairie Naturalist Volume 19, No. 3. September 1987
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
TABLE OF CONTENTS
DISTRIBUTION AND POPULATION TREND OF WESTERN MEADOWLARKS IN ILLINOIS ▪ R. D. Applegate and A. G. Willms
EFFECT OF DISRUPTIVE BACKGROUND ON PREDATION OF ARTIFICIAL NESTS BY AMERICAN CROWS ▪ L. G. Sugden
AVIAN HABITAT OCCUPANCY FOLLOWING FIRE IN A MONTANA SHRUB STEPPE ▪ C. E. Bock and J. H. Bock
ACTIVITY OF A WILD BLACK-FOOTED FERRET LITTER ▪ R. Paunovich and S. C. Forrest
EGG-DIAMETER DEVELOPMENT OF GIZZARD SHAD COLLECTED FROM A GREAT PLAINS RESERVOIR ▪ C. A. Cox and D. …
Initiation Of Terpenoid Synthesis In Osmophores Of Stanhopea Anfracta (Orchidaceae): A Cytochemical Study, Kenneth J. Curry
Initiation Of Terpenoid Synthesis In Osmophores Of Stanhopea Anfracta (Orchidaceae): A Cytochemical Study, Kenneth J. Curry
Faculty Publications
The terpenoid component of the osmophore fragrance in Stanhopea species is composed of isoprene units synthesized via the mevalonic acid pathway. Localization of hydroxymethylglutaryl CoA synthase in the pathway was achieved using a technique which elicits the formation of an electron- dense precipitate of uranyl ferrocyanide at the point where an acetyl group from acetyl CoA is transferred to acetoacetyl CoA, releasing free CoA-SH. Applying this technique to cells of the osmophore of S. anfracta resulted in a precipitate between the inner and outer mitochondrial membranes, in the smooth endoplasmic reticulum, and, to a lesser extent, on the outer surface …