Life Sciences Commons^™

Leaf Optical And Indirect Lai Measurements In Wheat And Alfalfa At Maciv: Agmet Progress Report 89-4, E. A. Walter-Shea, B. L. Blad

School of Natural Resources: Documents and Reviews

No abstract provided.

Functional Characterization Of Petiolule-Like Pulvinus (Plp) Gene In Abscission Zone Development In Medicago Truncatula And Its Application To Genetic Improvement Of Alfalfa, Juan Du, Shaoyun Lu, Maofeng Chai, Chuanen Zhou, Liang Sun, Yuhong Tang, Jin Nakashima, Jaydeep Kolape, Zhaozhu Wen, Marjan Behzadirad, Tianxiu Zhong, Juan Sun, Yunwei Zhang, Zeng-Yu Wang

Nebraska Center for Biotechnology: Faculty and Staff Publications

Alfalfa (Medicago sativa L.) is one of the most important forage crops throughout the world. Maximizing leaf retention during the haymaking process is critical for achieving superior hay quality and maintaining biomass yield. Leaf abscission process affects leaf retention. Previous studies have largely focused on the molecular mechanisms of floral organ, pedicel and seed abscission but scarcely touched on leaf and petiole abscission. This study focuses on leaf and petiole abscission in the model legume Medicago truncatula and its closely related commercial species alfalfa. By analysing the petiolule-like pulvinus (plp) mutant in M. truncatula at phenotypic level …

Functional Characterization Of Petiolule-Like Pulvinus (Plp) Gene In Abscission Zone Development In Medicago Truncatula And Its Application To Genetic Improvement Of Alfalfa, Juan Du, Shaoyun Lu, Maofeng Chai, Chuanen Zhou, Liang Sun, Yuhong Tang, Jaydeep Kolape, Zhaozhu Wen, Marjan Behzadirad, Tianxiu Zhong, Juan Sun, Yunwei Zhang, Zeng-Yu Wang

Department of Agronomy and Horticulture: Faculty Publications

Alfalfa (Medicago sativa L.) is one of the most important forage crops throughout the world. Maximizing leaf retention during the haymaking process is critical for achieving superior hay quality and maintaining biomass yield. Leaf abscission process affects leaf retention. Previous studies have largely focused on the molecular mechanisms of floral organ, pedicel and seed abscission but scarcely touched on leaf and petiole abscission. This study focuses on leaf and petiole abscission in the model legume Medicago truncatula and its closely related commercial species alfalfa. By analysing the petiolule-like pulvinus (plp) mutant in M. truncatula at phenotypic level (breakstrength and shaking …

Functional Characterization Of Petiolule-Like Pulvinus (Plp) Gene In Abscission Zone Development In Medicago Truncatula And Its Application To Genetic Improvement Of Alfalfa, Juan Du, Shaoyun Lu, Maofeng Chai, Chuanen Zhou, Liang Sun, Yuhong Tang, Jin Nakashima, Jaydeep Kolape, Zhaozhu Wen, Marjan Behzadirad, Tianxiu Zhong, Juan Sun, Yunwei Zhang, Zeng-Yu Wang

Nebraska Center for Biotechnology: Faculty and Staff Publications

Alfalfa (Medicago sativa L.) is one of the most important forage crops throughout the world. Maximizing leaf retention during the haymaking process is critical for achieving superior hay quality and maintaining biomass yield. Leaf abscission process affects leaf retention. Previous studies have largely focused on the molecular mechanisms of floral organ, pedicel and seed abscission but scarcely touched on leaf and petiole abscission. This study focuses on leaf and petiole abscission in the model legume Medicago truncatula and its closely related commercial species alfalfa. By analysing the petiolule-like pulvinus (plp) mutant in M. truncatula at phenotypic level (breakstrength and …

Establishment Of Perennial Legumes With An Annual Warm-Season Grass As A Companion Crop, Martina N. La Vallie

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The yields of perennial forage legumes are often hindered during the establishment year due to slow germination rates and weed competition. This study was conducted to determine if sorghum-sudangrass (Sorghum bicolor x S. bicolor var. sudanese) is a compatible annual companion crop for increased forage production, weed suppression, and legume establishment. In 2016, sorghum-sudangrass was paired with alfalfa (Medicago sativa L. ‘Ranger’), birdsfoot trefoil (Lotus corniculatus L.), Illinois bundleflower [Desmanthus illinoensis (Michx.) MacMill. ex B.L. Rob. & Fernald], purple prairie clover (Dalea purpurea Vent.), red clover (Trifolium pratense L.), and roundhead lespedeza (Lespedeza capitata Michx.). We studied effects of a …

Ec07-101 2007 Spring Seed Guide, Lenis Alton Nelson, Bruce Anderson, Robert N. Klein, Richard B. Ferguson, David D. Baltensperger, Charles A. Shapiro, Stevan Z. Knezevic, James Krall

University of Nebraska-Lincoln Extension: Historical Materials

This circular is a progress report of variety and hybrid performance tests conducted by the Agronomy/Horticulture Department, the Northeast, West Central and Panhandle Research and Extension Centers, the South Central Agricultural Laboratory as part of the University of Nebraska and University of Wyoming at Torrington. Conduct of experiments and publication of results is a joint effort of the Agricultural Research Division and the Cooperative Extension Service. The following pages include the results of our variety testing programs for many crop species throughtout the state. We hope you find this information useful as you make hybrid and variety decisions for next …

Chlorophacinone Baiting For Belding’S Ground Squirrels, Craig A. Ramey, George H. Matschke, Richard M. Engeman

USDA Wildlife Services: Staff Publications

The efficacy of using 0.01% chlorophacinone on steam-rolled oat (SRO) groats applied in CA alfalfa by spot-baiting/hand baiting around burrow entrances (~11.5 g) to control free-ranging Belding's ground squirrels (Spermophilus beldingi) were compared in 6 randomly assigned square treatment units (TUs). Four TUs were given the rodenticide and 2 treated with placebo bait. Each TU was a 0.4 ha square surrounded by a similarly treated 5.5 ha square buffer zone. Baits were applied on May 13 and re-applied, on May 20 and May 22, after 7 days of un-forecasted cool wet weather greatly reduced their above ground activity. Pesticide (EPA …

Ec07-103 2007 Fall Seed Guide, Lenis Alton Nelson, David D. Baltensperger, Robert N. Klein, Bruce Anderson, Jerry D. Volesky, P. Stephen Baenziger, James Krall

University of Nebraska-Lincoln Extension: Historical Materials

The 2006 wheat crop has faced more than the usual number of challenges. Western Nebraska was again faced with shortages of rainfall as well as wheat streak mosaic. Eastern Nebraska fared better, but some places had soil borne mosaic problems. Overall, the state yield was down but becasue of similar problems throughout the Great Plains, the price of wheat has remained strong. This circular is a progress report of variety trials conducted by personnel of the Agronomy Department, West Central and Panhandle Research and Extension Centers and their associated agricultural laboratories and the South Central Ag Lab. Conduct of experiments …

Effects Of Aphid (Homoptera) Abundance And Surrounding Vegetation On The Encounter Rate Of Coccinellidae (Coleoptera), Chrysopidae (Neuroptera), And Nabidae (Hemiptera) In Alfalfa, James C. Kriz, Stephen D. Danielson, James R. Brandle, Erin E. Blankenship, Geoff M. Henebry

Department of Entomology: Faculty Publications

Predaceous insect encounter rate was measured in 21 southeast Nebraska alfalfa fields through weekly sweep net sampling during 2002-03. The most frequently encountered predaceous insect families were Coccinellidae (Coleoptera), Nabidae (Hemiptera), and Chrysopidae (Neuroptera). The study used multiple regression analysis to examine the effect of aphid abundance and the surrounding vegetative patch composition on predaceous insect abundance. In 2002, Hippodamia parenthesis Say was encountered more frequently in fields with lower aphid abundances, and Hippodamia convergens Guerin-Meneville, Coccinella septempunctata L., and Nabis americoferus Carayon were encountered more frequently in fields with higher aphid abundances. In 2003, Coleomegilla maculata DeGeer was encountered …

Relative Abundance Of Exotic And Native Coccinellidae (Coleoptera) In Southeast Nebraska Alfalfa, James C. Kriz, Stephen D. Danielson, James R. Brandle, Erin E. Blankenship

Department of Entomology: Faculty Publications

The seven-spotted lady beetle, Coccinella septempunctata L., and the multicolored Asian lady beetle, Harmonia axyridis Pallas, are exotic Coccinellidae (Coleoptera) that are regularly encountered in southeastern Nebraska. Harmonia axyridis, a native of eastern Asia, was first reported in an established population near Abita Springs, St. Tammay Parish, Louisiana, in 1988. It was hypothesized that the introduction was accidental through commerce in Louisiana and not from introduction for biological control. Coccinella septempunctata, a native of Eurasia, was introduced for biological control several times and at a variety of locations across North America during the last century. As is the case …

Ec06-103 Fall Seed Guide, 2007, Lenis Alton Nelson, Robert N. Klein, Bruce Anderson, P. Stephen Baenziger, Jerry Nachtman

University of Nebraska-Lincoln Extension: Historical Materials

This circular is a progress report of variety trials conducted by personnel of the Agronomy Department, West Central and Panhandle Research and Extension Centers and their associated agricultural laboratories and the South Central Ag Laboratory. Conduct of experiments and publications of results is a joint effort of the Agricultural Research Division and the Cooperative Extension Service.

Ec06-155 Nutrient Management For Agronomic Crops In Nebraska, Richard B. Ferguson

University of Nebraska-Lincoln Extension: Historical Materials

Nebraska is blessed with fertile soil and vast supplies of groundwater which combine to create an environment well-suited to the production of corn, wheat, grain sorghum, alfalfa, edible beans, and other agronomic crops used for human or animal consumption.

This manual is a guide to nutrient use from all sources for the production of Nebraska's major agronomic crops: corn, winter wheat, grain sorghum, oats, alfalfa, dry edible beans, soybean, sugar beets, popcorn, sunflower, millet, potatoes, and cool and warm season grasses for hay and pasture. Part I of the manual contains information focusing on basic principles of soil fertility for …

Ec05-130 Guide For Weed Management In Nebraska, Roch E. Gaussoin, Brady F. Kappler, Robert N. Klein, Stevan Z. Knezevic, Drew J. Lyon, Alex Martin, Fred Roeth, Gail A. Wicks, Robert G. Wilson, Robert A. Masters, Patrick J. Shea, Larry D. Schulze

University of Nebraska-Lincoln Extension: Historical Materials

One of the major thrusts of all University of Nebraska weed science faculty is the Guide for Weed Management in Nebraska. This guide is not just the work of one or two people, rather it is a joint effort of all the authors to produce a comprehensive, information-packed resource. Each weed science faculty member is responsible for particular sections of the guide. The process of reviewing the current content, checking labels and research data and updating the content can be an extensive process. Each year new herbicide active ingredients and trade names are introduced and figuring out what a herbicide …

Ec05-101 Spring Seed Guide, 2006, Lenis Alton Nelson, Bruce Anderson, Robert N. Klein, Roger Wesley Elmore, David D. Baltensperger, Charles A. Shapiro, Stevan Z. Knezevic, James Krall

University of Nebraska-Lincoln Extension: Historical Materials

This circular is a progress report of variety and hybrid performance tests conducted by the Agronomy/Horticulture Department, the Northeast, West Central, and Panhandle Research and Extension Centers, the South Central Agricultural Laboratory as part of the University of Nebraska and University of Wyoming at Torrington. Conduct of experiments and publication of results is a joint effort of the Agricultural Research Division and the Cooperative Extension Service.

Ec04-103 Fall Seed Guide, 2004, Lenis Alton Nelson, David D. Baltensperger, Robert N. Klein, Roger Wesley Elmore, P. Stephen Baenziger, James Krall

University of Nebraska-Lincoln Extension: Historical Materials

This circular is a progress report of variety trials conducted by personnel of the Agronomy Department and the South Central, West Central and Panhandle Research and Extension Centers and their associated agricultural laboratories. Conduct of experiments and publications of results is a joint effort of the Agricultural Research Division and the Cooperative Extension Service.

The Probabilistic Economic Injury Level: Incorporating Uncertainty Into Pest Management Decision-Making, Robert K. D. Peterson, Thomas E. Hunt

Department of Entomology: Faculty Publications

Despite the recognition that the economic injury level (EIL) is determined by dynamic biological and economic parameters, which can be highly variable and uncertain, there has been little effort to quantify uncertainty and to use estimates of uncertainty in the determination of EILs. In this paper, we define the probabilistic EIL (PEIL) and develop PEILs for two insect pest scenarios: alfalfa weevil larvae, Hypera postica (Gyllenhal), on early bud-stage alfalfa, and bean leaf beetle adults, Cerotoma trifurcata (Forster), on V1-stage soybean. The PEIL is an EIL that reflects its probability of occurrence. The probability of occurrence is determined by incorporating …

Enhanced Bioremediation Of Soil Containing 2,4-Dinitrotoluene By A Genetically Modified Sinorhizobium Meliloti, Sisir K. Dutta, Gail P. Hollowell, Fawzy M. Hashem, L. David Kuykendall

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

The symbiotic nitrogen-fixing soil bacterium, Sinorhizobium meliloti, is well known for its ability to interact with the leguminous plant Medicago sativa L. It has, however, not been reported that this species possesses the capability to degrade toxic nitroaromatic compounds, such as 2,4-dinitrotoluene (DNT) which is commonly associated with the degradation of the explosive trinitrotoluene (TNT). In this study, the pJS1 DNT-biodegradative plasmid was genetically transferred to S. meliloti strain USDA 1936, which was confirmed by plasmid profile analysis. Several standard analytical and chemical tests including high performance liquid chromatography (HPLC), nitrite (NO2) release assays, rhizosphere population and plant greenhouse …

Ec03-153 Selecting Alfalfa Varieties For Nebraska, Bruce Anderson, Michael Trammell, Charles A. Shapiro, David D. Baltensperger

University of Nebraska-Lincoln Extension: Historical Materials

The most important variety decision on many farms and ranches is the selection of alfalfa. The choice of alfalfa variety affects production for three to ten or more years, whereas varieties of annual crops can be changed annually. Yield potential, pest resistance, and seed price should be considered when selecting alfalfa varieties in Nebraska.

Ec03-181 Alfalfa In Nebraska, Bruce Anderson, Loren J. Giesler, Thomas E. Hunt, Shripat T. Kamble, Stevan Z. Knezevic, Charles A. Shapiro

University of Nebraska-Lincoln Extension: Historical Materials

Alfalfa is the most important forage crop grown in Nebraska, with over 1,000 acres grown in every county. It has the highest feeding value for livestock and one of the highest yield potentials. Alfalfa can produce more protein per acre than any other crop and can provide all of the protein needed by many livestock as well as supplying large amounts of vitamins, minerals, and energy. Protein of alfalfa. In also covers the cultural practices, insect pests, diseases, weeds that affect alfalfa.

Ec03-883 Crop And Livestock Prices For Nebraska Producers, 1960-2003, Darrell R. Mark, Dillon Feuz, Roger Selley, Tina N. Barrett

University of Nebraska-Lincoln Extension: Historical Materials

This report contains historical price data for the major crops and livestock commodities produced in Nebraska. Prices received by producers are reported for 1960-2002 for most of the commodities.

The data was compiled from Nebraska Agricultural Statistics Services and Agricultural Prices, National Agricultural Statistics Service, USDA; Oil Crops Situation and Outlook, Economic Research Service, USDA; Cotton and Wool Outlook, Economic Research Service, USDA; and Livestock and Grain Market News, Agricultural Marketing Service, USDA. Sources of prices for each commodity are indicated on the tables.

Ec03-1887 Alfalfa Disease Profiles, Loren J. Giesler, John E. Watkins, James P. Stack, Robert M. Harveson, Jennifer L. Chaky

University of Nebraska-Lincoln Extension: Historical Materials

This two-page, 4-color publications profiles the diseases and symptoms of alfalfa. The diseases discussed here include: rust, anthracnose, stemphylium leaf spot, downy mildew, common leaf spot, spring black stem, summer black stem, stem nematode, seedling blights, phytophthora root rot, alfalfa mosaic, crown rot, verticillium wilt, and violet root rot.

Nf02-551 Management Of Blister Beetles In Alfalfa, John B. Campbell, Steve Ensley

University of Nebraska-Lincoln Extension: Historical Materials

Adult blister beetles (Epicauta spp.) tend to be gregarious, and several may be observed feeding on the same flowering plant such as alfalfa or sometimes soybeans, goldenrod or occasionally musk thistle, They feed primarily on leaves and flowers but do little damage to crops.

This NebFact discusses the life cycle, damage, treatment, and prevention avoidance of the blister beetle here in Nebraska.

Ec01-153 Selecting Alfalfa Varieties For Nebraska 2001, Bruce Anderson, Michael Trammell, Patrick E. Reece

University of Nebraska-Lincoln Extension: Historical Materials

Yield potential, pest resistance and seed price should be considered when selecting alfalfa varieties in Nebraska.

The most important variety decision for many farms and ranches is the selection of alfalfa. The choice of alfalfa variety affects production for three to 10 or more years, whereas varieties of annual crops can be changed every year.

Varieties that have been tested with commercial seed since 1991 for two or more years at locations in Nebraska and marketed in the state are shown in this 2001 extension circular revision.

Ec01-1880 Diseases Of Nebraska's Field Crops, Loren J. Giesler, Robert M. Harveson, Jim Stack, John E. Watkins, Jennifer L. Chaky

University of Nebraska-Lincoln Extension: Historical Materials

Each year, plant diseases are an important factor in reducing yields of Nebraska's field crops. The purpose of this publication is to provide concise information in an easy to use table for many of Nebraska's field crop diseases. The disease information is organized by crop.

Diseases covered in this publication include the four main groups of plant pathogens: fungi, bacteria, viruses, and nematodes.

Ec01-872 Nebraska Crop Budgets 2001, Roger Selley, Tina N. Barrett, Richard T. Clark, Robert N. Klein, Steve Melvin

University of Nebraska-Lincoln Extension: Historical Materials

The 2001 Crop Budgets contains a list of representative field operations and materials that provides a reminder of items typically invovled in producing the crop. The budgets are presented in a worksheet format with a "Your Estimate" column for recording modifications in costs.

This publication covers the following crops: Forages -- alfalfa, annual hay, corn silage, grass, grass hay, and pasture. Grain -- corn, dry beans, grain sorghum, proso millet, oats, soybeans, sugar beets, sunflower, wheat.

Ec00-153 Selecting Alfalfa Varieties For Nebraska, Bruce Anderson, Michael Trammell, Patrick E. Reece

University of Nebraska-Lincoln Extension: Historical Materials

Yield potential, pest resistance and seed price should be considered when selecting alfalfa varieties in Nebraska.

The most important variety decision on many farms and ranches is the selection of alfalfa. The choice of alfalfa variety affects production for three to 10 or more years, whereas varieties of annual crops can be change every year.

This extension circular lists the alfalfa varieties that have been tested in Nebraska with commercial seed for two or more years since 1997 and marketed in the state. These are the 2000 results.

G00-1393 Grazing Alfalfa (Revised September 2004), Jerry D. Volesky, Bruce E. Anderson

University of Nebraska-Lincoln Extension: Historical Materials

Alfalfa is the most productive and versatile forage legume grown in Nebraska. Cutting for hay or silage has been the traditional method of harvest, but many options also exist for grazing. With current technology and proper management beef gain can exceed 1,000 pounds per acre with acceptable stand persistence.

Grazing alfalfa may be a cost efficient means of harvest for some producers. This NebGuide explores alfalfa and alfalfa/grass options, varieties and stand establishment, and grazing and bloat management.

G99-1393 Grazing Alfalfa, Jerry D. Volesky, Bruce Anderson

University of Nebraska-Lincoln Extension: Historical Materials

Grazing alfalfa may be a cost efficient means of harvest for some producers. This NebGuide explores alfalfa and alfalfa/grass options, varieties and stand establishment, and grazing and bloat management.

Alfalfa is the most productive and versatile forage legume grown in Nebraska. Cutting for hay or silage has been the traditional method of harvest, but many opportunities and options exist for grazing. With current technology and proper management, beef gain can exceed 1,000 pounds per acre with acceptable stand persistence.

Ec98-1875 Alfalfa Disease Management, John E. Watkins

University of Nebraska-Lincoln Extension: Historical Materials

Alfalfa is the most important forage crop in Nebraska. it is wisely adapted, energy efficient and produces the most protein yield per acre. It is used widely for local livestock feed and its importance as a cash crop is growing rapidly. With good management, Nebraska producers can attain good alfalfa yields and high quality in either irrigated or dryland production systems.

In Nebraska the diseases that most affect forage yields, forage quality and stand persistence are crown and root rots, phytophthora root rot, anthracnose, spring black stem, summer black stem and common leaf spot. Each will be discussed briefly in …

Nf97-328 A Guide To Grasshopper Control In Cropland (Revised May 2004), Gary L. Hein, John B. Campbell

University of Nebraska-Lincoln Extension: Historical Materials

Grasshoppers have been a major concern to farmers and ranchers since Nebraska was first settled. The potential for devastation, while still serious, is not as great as it was 100 years ago because many of the prime grasshopper breeding areas along the eastern slopes of the Rocky Mountains are now under tillage. Statewide, grasshopper populations fluctuate in cycles with large numbers occurring for two to four years, followed by moderate numbers for several years.

This NebFact discusses grasshopper damage to cropland, how to determine when control is required and methods of control.