Life Sciences Commons^™

G81-548 Organic Gardening In The Backyard (Revised June 1990), Dale T. Lindgren, Don Steinegger, Frederick P. Baxendale, John E. Watkins

University of Nebraska-Lincoln Extension: Historical Materials

Successful organic gardening requires consideration of many factors, including resistant cultivars, crop rotation, sanitation, incorporation of organic matter, garden location, and insect and disease control.

Organic gardening is growing in popularity. Although this technique traditionally has been limited to backyard gardens, commercial organic farms now exist in Nebraska. The phrase "organically grown" generally refers to produce grown and processed without the use of synthetic organic chemicals in pesticides, fertilizers, preservatives, or flavorings. The main arguments for organic gardening are that food is less likely to contain potentially harmful chemicals and that fewer chemicals are released into the environment. Arguments against …

G81-540 Peppers (Revised May 1990), Dale T. Lindgren, Laurie Hodges

University of Nebraska-Lincoln Extension: Historical Materials

Various peppers and their care are discussed here.

Peppers are treated as warm-season annual crops when grown in Nebraska gardens. They are related to eggplants, potatoes and tomatoes, all of which belong to the Solanaceae (Nightshade) family.

G81-550 Ecofarming Operating High Capacity Sprayers (Floaters) For Herbicide Application, Gail A. Wicks, Charles R. Fenster, Norman L. Klocke

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide will help you determine whether you are covered by or exempt from the Worker Protection Standard and provide information on how to comply.

Many flotation sprayers are only used to spray fertilizers and herbicides in the spring. Ecofarming, however, represents a March to November market for them. Successful ecofarming requires precision spraying of herbicides on the winter wheat stubble, and offers tremendous opportunities for professional applicators. Commercial application eliminates some of the field work for the farmer, which is an important element for more efficient farming. The commercial applicator is also able to do a better job since …

G81-574 Reproductive Diseases In Cattle, Duane Rice

University of Nebraska-Lincoln Extension: Historical Materials

The reproductive diseases mentioned in this NebGuide comprise some of the more common problems confronting the cattle industry today.

Although many advances have been made in controlling reproductive diseases in cattle, serious losses are still common. These losses can be reduced by recognizing the diseases and following the proper management recommendations that are available today. Nearly 50 percent of reproductive failure in cattle is due to infectious diseases, and there are vaccines available that can prevent some of these. Management recommendations may include: 1) vaccines, 2) general sanitation, 3) artificial insemination (AI) or, if a problem is already present, 4) …

G81-539 Assisting The Beef Cow At Calving Time, Gene H. Deutscher, Donald B. Hudson

University of Nebraska-Lincoln Extension: Historical Materials

This publication acquaints cattle producers with calving management principles to minimize calf loss. The objective is to deliver a live calf from every cow. Six to ten percent of all calves born in beef cow herds in the U.S. die at or soon after birth. Approximately half of those deaths are due to calving difficulty (dystocia). This multi-million dollar annual loss is second only to losses from cows failing to conceive. Calving difficulty has received much more attention in recent years, primarily because of the mating of larger European breeds of bulls to British breeds of cows. Increased calving problems …

G81-556 Using The California Mastitis Test (Cmt) To Detect Subclinical Mastitis, Duane N. Rice

University of Nebraska-Lincoln Extension: Historical Materials

Apparently healthy cows can harbor subclinical mastitis, which creates tremendous loss in milk production. This NebGuide offers a method for detecting this disease.

The dairyman is generally aware of clinical mastitis because it can be seen as changes in the milk, swollen udder and other signs exhibited by the cow. Compared with subclinical mastitis, clinical mastitis is much less costly, is of short duration, tends to be an individual cow problem, and is detected without special tests.

Unfortunately, the apparently healthy cow can harbor subclinical mastitis, which creates tremendous loss in milk production. A cow with subclinical mastitis does not …

Heg81-148 How To Say Yes--How To Say No, Herbert G. Lingren

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide discusses assertive behavior and how to become more assertive.

When you get angry with someone, are you afraid to say anything because you don't want to hurt their feelings?

When the meat you ordered at a restaurant meal is overcooked, do you eat it anyway?

When your partner does something you don't like, do you get angry and yell?

When someone pays you a compliment, do you say, "I didn't really do anything?"

Then you may wish to consider learning to express yourself in a more positive, confident and straightforward manner. Being assertive is based on the idea …

Chemical Treatment Of Wheat Straw, Gary Lesoing, Terry Klopfenstein, Ivan G. Rush, John Ward

Panhandle Research and Extension Center

An in vitro digestion study, a lamb growth trial and a lamb digestion trial were conducted to evaluate the effect of different NaOH and Ca(OH)₂ treatments on the energy availability of wheat straw. In vitro dry matter disappearance (IVDMD) of wheat straw was increased 29% by chemical treatment with 1% NaOH plus 3% Ca(OH)2 and by as much as 86% by a 4% NaOH plus 1% Ca(OH)2 treatment. A significant amount of hemicellulose was solubilized by chemical treatment with NaOH and Ca(OH)₂, but little cellulose was solubilized. Rate and extent of both hemicellulose and cellulose digestion of …

Definition And Distribution Of The Boreal Mixedwood Forest In Ontario, K.M. Mcclain

Aspen Bibliography

No abstract provided.

Aspen Resource Of Minnesota Usa, P.J. Jakes

Aspen Bibliography

No abstract provided.

Stand Characteristics Of Rocky Mountain Aspen, Wayne D. Shepperd

Aspen Bibliography

No abstract provided.

Aspen Regeneration, George A. Schier

Aspen Bibliography

No abstract provided.

Estimating Plant Biomass For Undergrowth Species Of Northeastern Minnesota Forest Communities, L.F. Ohmann, D.F. Grigal, L.L. Rogers

Aspen Bibliography

Knowledge of the plant biomass comprising a forest community is important to many aspects of multiple-use management. Direct measurement of biomass, however, is expensive and time-consuming to under-take each time biomass information would be useful. Fortunately, other measurements that can be made in the field less expensively or more easily can be used for estimating biomass.

The Response Of Aspen (Populus Tremuloides) To Artificial Defoliation, A.C. Hodson

Aspen Bibliography

No abstract provided.

Cryptosphaeria Canker And Libertella Decay Of Aspen, Thomas E. Hinds

Aspen Bibliography

A recently discovered, widely distributed canker disease of aspen and other poplars throughout the Rocky Mountain region is described. Inoculations with ascospore and conidial isolates of Cryptosphaeria populina show the fungus is capable of causing branch, sprout, and sapling mortality, trunk cankers, and the discoloration and decay of aspen stems previously associated with its imperfect stage, Libertella sp. The greatest average canker elongation 50 mo after September inoculations was 33.5 cm with sapwood decay and discoloration extending to 401 cm. The fungus caused an average weight loss of 13.5% in bark, 27.0% in sapwood, and 19.1% in heartwood blocks. Incidence …

Songbird Populations And Clearcut Harvesting Of Aspen In Northern Utah, Norbert V. Debyle

Aspen Bibliography

No abstract provided.

Analysis Of A Controlling-Element Mutation At The Adh Locus Of Maize, John Osterman, Drew Schwartz

School of Biological Sciences: Faculty Publications

A Ds-suppressed Adh mutant was isolated by the allyl alcohol pollen selection

technique. The mutant produces a reduced level of an altered thermolabile

enzyme suggesting that the Ds element is inserted in the Adh structural gene.

The mutant protein is enzymatically active and does not differ detectably in

size from the progenitor protein. A number of possible explanations for the data

are presented.

Tree Biomass Estimates For Minnesota's Aspen-Birch Forest Survey Unit, Gerhard K. Raile, Pamela J. Jakes

Aspen Bibliography

No abstract provided.

Aspects Of The Early Life History Of Loligo Pealei (Cephalopoda:Myopsida), Michael Vecchione

VIMS Articles

The long-finned squid Loligo pealei was the most common squid collected in 2 years of zooplankton sampling over the Middle Atlantic Bight off New Jersey and Virginia. Planktonic specimens of L. pealei were found in that area during spring, summer, and fa ll; there were no indications of multiple stocks. This species was captured in waters with a salinity range of 31.5 to 34.0 ppt, and was confined to coastal waters except when current conditions, such as the passage of a Gulf Stream eddy, resulted in strong, offshore surface transport. While abundances were greater in night surface samples, larger specimens …

Nitrate-Rich Groundwater Inputs To Discovery Bay, Jamaica - A Significant Source Of N To Local Coral Reefs, Ce D'Elia, Kl Webb, Jw Porter

VIMS Articles

The freshwater aquifer at Discovery Bay, Jamaica, produces subterranean springs and seeps near the reef at the mouth and along the southern and western shorelines of the bay. A strong inverse correlation exists between salinity and N concentration. Undiluted springwater typically contains 80 J.Lg at N per liter or more, primarily as nitrate, but is essentially devoid of P. Input from the springs is enough to reduce the salinity by one to several parts per thousand near these sites and appears to produce a significant enrichment of nitrogen to the bay.

Role Of Gulf Stream Frontal Eddies In Forming Phytoplankton Patches On The Outer Southeastern Shelf, James A. Yoder, Larry P. Atkinson, Thomas N. Lee, Hongsuk H. Kim, Charles R. Mcclain

CCPO Publications

Continuous surface mapping of temperature, salinity, and chlorophyll along a 300-km segment of the Gulf Stream cyclonic front defined the spatial scales of a large diatom patch that persisted throughout a 10-day study. The patch was localized in the upwelled cold core of a Gulf Stream frontal eddy centered over the 200-m isobaths off Jacksonville, Florida, in April 1979. The µ g liter^-1 surface chlorophyll isopleth enclosed an area >1,000km² with an alongshore dimension of 130km. Surface chlorophyll exceeded 5µg liter^-1 within the upwelled cold core of the eddy, 10-100X higher than concentrations in Gulf Stream or …

Aquaculture Industry Of Arkansas In 1979-1980, Donald H. Fiegel, Mike Freeze

Journal of the Arkansas Academy of Science

A survey of previous fish farmer certificate holders in Arkansas was conducted during 1979-1980 using renewal questionnaires, telephone conversations, and personal contacts. This survey was compared with similar surveys from preceding years. Approximately 51.0% of 12,372 intensively farmed hectares in 1979-80 were devoted to bait fish production, while 22.9% were utilized in food fish production. Acreage in bait fish, food fish, and fingerling production decreased from 1979 to 1980; however, price increases during this time resulted in a higher total value of the industry

Occurrence Of The Land Planarians Bipalium Kewense And Geoplana Sp. In Arkansas, James J. Daly, Julian T. Darlington

Journal of the Arkansas Academy of Science

No abstract provided.

State Of Cytidine 3', 5' Cyclic Monophosphate (Cyclic Cmp) Research, Joseph E. Stone, Bruce E. Murphy

Journal of the Arkansas Academy of Science

No abstract provided.

Louisiana Agriculture Magazine, Winter 1981-1982, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Clone Expansion And Competition Between Quaking And Bigtooth Aspen Suckers After Clearcutting, Donald A. Perala

Aspen Bibliography

The ability of quaking and bigtooth aspens (Populus tremuloids Michx., P. grandidentata Michx.) to vegetatively regenerate dense stands of root sprouts (suckers) is well documented (Brinkman and Roe 1975). Tens of thousands of suckers per hectare are commonly produced when stands are killed by fire or removed by clearcutting.

Ecological Succession In Aspen And Its Consequences On Multiple Use Values, Roy O. Harniss

Aspen Bibliography

Aspen can be categorized as (1) seral-- successional to conifer, (2) stable--regenerates to aspen, or (3) decadent--successional to brush, forbs, or grasses. Succession to conifers reduces understory production, plant and wildlife diversity, water yields, and aesthetic values while it increases timber values. Stable aspen stands, except possibly for timber values, maintain these multiple use values if grazing is not excessive. In decadent aspen stands all of the multiple use values except water are reduced. Management expectations and returns for multiple use values would depend on the successional status of the aspen.

Aspen [Populus Tremuloides] Community Types On The Bridger-Teton National Forest In Western Wyoming [Including A Key With Indicator Species], Andrew P. Youngblood, Walter F. Mueggler

Aspen Bibliography

A classification system is presented for aspen (Populus tremuloides Michx.) dominated forests on the Bridger-Teton National Forest in western Wyoming. Twenty-six aspen community types are defined and described. A diagnostic key that utilizes indicator plant species is provided for field identification of the community types. Vegetation composition, environment, productivity, relationship to surrounding vegetation, and successional status are discussed. Tables are provided for detailed comparisons.

Utilization Of Aspen Populus-Tremuloides Trees As A Ruminant Feed Component, M. Singh, L.D. Kamstra

Aspen Bibliography

When traditional roughages are in short supply or high in price, other fibrous feed sources for ruminants should be considered if available at a competitive price. One such fibrous material shown to have potential as a ruminant feed is the aspen tree (Populus tremuloides Michx.) harvested in its entire form to include bark, leaves and trunk. The aspen tree is the most widespread tree species in North America and the least utilized. Estimates exceed 6 million acres of mature trees in an area which would include the Black Hills (58,000 acres), the Great Lakes region and the Rocky …

Opportunities For Wildlife Habitat Management In Aspen, Paul W. Shields

Aspen Bibliography

No abstract provided.