Digital Commons Network^™

Ec98-761 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Worksheet 10: Livestock Yards Management, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Why should I be concerned? Livestock yards, such as barnyards, holding areas and feedlots, are areas of concentrated livestock wastes and a potential source of nutrient, solids, and bacteria contamination of surface and groundwater. Yards that are abandoned permanently or are inactive temporarily also represent a potential risk.

Ec98-770 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Worksheet 5: Fertilizer Storage And Handling, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Why should I be concerned? Fertilizers play a vital role in agriculture. Over the years, fertilizers have increased farm production dramatically. Commercial fertilizer is, however, a major source of nitrate. Your drinking water is least likely to be contaminated if you follow appropriate management procedures or dispose of wastes off the farm site. However, proper offsite disposal practices are essential to avoid risking contamination that could affect the water supplies and health of others.

Ec98-768 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Worksheet 4: Pesticide Storage And Handling, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Why should I be concerned? Pesticides are showing up where they’re not wanted — in our drinking water. If pesticides are not handled and stored correctly around the farm, they can seep through the ground after a leak or spill, or enter a well directly during mixing and loading. Pesticides play an important role in agriculture. They have increased farm production and enabled farmers to manage more acres with less labor.

Ec98-792 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Fact Sheet 16: Improving Crop Pesticide Application Management, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Though pesticides are especially harmful to the target pest, they are also potentially harmful to most living and breathing creatures and non-target plant life. Proper handling and application management of pesticides are important to protect you and to protect surface and groundwater from contamination. Pesticides were first found in groundwater in the 1970s. Prior to that, the general belief was that pesticides did not leach into the groundwater with normal use.

Ec98-791 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Worksheet 15: Irrigation Wellhead Protection, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Why should I be concerned? Nebraska’s 80,000+ irrigation wells can provide a direct conduit for contaminants to reach groundwater supplies unless properly located, constructed, and protected. Groundwater is the source of drinking water for essentially all of Nebraska’s rural residents and most residents of our towns and cities. It is critical that every effort be made to protect groundwater quality. Irrigation wells can be constructed and maintained to assure that groundwater quality is protected. Improperly constructed or maintained wells can allow bacteria, pesticides, fertilizers, oil products, or other pollutants to contaminate groundwater.

Ec98-789 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Fact Sheet 14: Improving Crop Nutrient Application Management, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Economics, energy and the environment are three primary reasons to be concerned about nutrient management, especially nitrogen (N) management. Nitrogen ranks high on a list of sixteen nutrients needed for the health of most plants, but unfortunately it also ranks high as a contaminant of Nebraska’s surface and groundwater. Most other nutrients occur naturally in the soil. Besides nitrogen, phosphorus and potassium are the nutrients most often added to Nebraska soils.

Ec98-796 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Worksheet 17: Stormwater Management At Residential Sites, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Stormwater is water from irrigation, rain or melting snow that does not soak into the ground. It flows from rooftops, over paved areas and bare soil, and across sloped lawns. As it flows, this runoff can collect and transport soil, pet waste, livestock manure, salt, pesticides, fertilizer, oil and grease, leaves, litter and other potential pollutants. A heavy rainstorm isn’t needed to send pollutants rushing toward streams, wetlands and lakes. A garden hose alone can supply enough water.

Ec98-795 Farm*A*Syst Nebraska’S System For Assessing Water Contamination Fact Sheet 17: Improving Stormwater Management At Residential Sites, Robert Grisso, Delynn Hay, Paul J. Jasa, Richard K. Koelsch, Sharon Skipton, Wayne Woldt

University of Nebraska-Lincoln Extension: Historical Materials

Stormwater is water from irrigation, rain or melting snow that does not soak into the ground. It flows from rooftops, over paved areas and bare soil, and across sloped lawns. As it flows, this runoff can collect and transport soil, pet waste, livestock manure, salt, pesticides, fertilizer, oil and grease, leaves, litter and other potential pollutants. A heavy rainstorm isn’t needed to send pollutants rushing toward streams, wetlands and lakes. A garden hose alone can supply enough water.

Ec98-787 Glossary Of Ecosystem Terms, Thomas G. Franti, R. Herpel, G.R. Lingle

University of Nebraska-Lincoln Extension: Historical Materials

This extension circular contains ecosystem definitions from abiotic to wildlife refuge.

The Probe, Issue 184 – January 1998

The Probe: Newsletter of the National Animal Damage Control Association

NADCA Election Results!
PRESIDENT Robert H. Giles, Jr. (VA) VICE PRESIDENT - WEST Mark Collinge (ID) VICE PRESIDENT - EAST Pete Butchko (MS) SECRETARY Richard B. Chipman (VT) TREASURER Grant Huggins (OK)
REGIONAL DIRECTORS: Western (1): Diane deLorimier (CA) Southern Rockies (2): GaryWitmer (CO) Northern Rockies (3): George E. Graves (ID) South Central (4): James R. Gallaspy (LA) North Central (5): James C. Luchsinger (NE) Great Lakes (6): Mike Dwyer (OH) Northeastern (7): Jerry L. Pickel (PA) Centraleastern (8): JohnM. Houben (VA) Southeastern (9): D. Tommy King (MS)
From Our Incoming President: An Opinion....-- Robert H. Giles, Jr.
Carrie Hunt …

Tragopan: Newsletter Of The Wpa/Species Survival Commission/Birdlife Pheasant Specialist Group 8-13/14 (1998-2001), World Pheasant Association, Iucn Species Survival Commission, Birdlife International Pheasant Specialist Group

Galliformes Specialist Group and Affiliated Societies: Newsletters

Issue 8 (March 1998)

Editorial

From the Chairman

Project news

International Symposium

Vietnamese Seminar

Edwards"s pheasant workshop

Studies on Elliot's pheasant

Neating of Blyth 's tragopan

Annamese silver pheasant

Siamese firebacks in Vietnam

Peoples' participation in Vietnam

Funding agencies

PSO core committee

Issue 9 (August 1998)

Editorial

From the Chairman

Project news

lnternational Galliformes Symposium

The New Pheasant Action Plan

Brown eared pheasant distribution

Imperial pheasant - a hybrid?

Probable new pheasant taxon

Dolan's eared pheasant

Pheasunts in Great Himalayan National Park

Reeves's pheasant nature reserve

Pipar pheasant survey, Nepal

Obituaries

Issue 10 (March 1999)

Editorial

From the Chairman

Project …

Center For Sustainable Agricultural Systems Newsletter, January/February 1998

Center for Sustainable Agricultural Systems: Newsletter (1993–2000)

Contents:

National Organic Program Proposed Rule

National Strategy to Assist Small Farms

North Central Region SARE Offers Producer Grants

Educators Invited to Attend SARE Celebration

Integrated Farm Update: Small Grain Cover Crops in Crop/Livestock Systems

Future Food Systems: Implications for Nebraska

Symposium: Preserving Farmland, Policies and Practices

What Mosquitos Smell These Days, David A. Carlson

Entomology Papers from Other Sources

The CIBA Foundation sponsored a symposium on olfaction in mosquito-host interactions in London (31 October-2 November 1995) at the suggestion of John Hildebrand, of the University of Arizona. Given my own interest in this topic, I was curious about the resulting volume, to which some of the major workers in the field contributed.

Dose-Response And Age- And Temperature-Related Susceptibility Of The Diamondback Moth (Lepidoptera: Plutellidae) To Two Isolates Of Beauveria Bassiana (Hyphomycetes: Moniliaceae), John D. Vandenberg, Mark Ramos, Jennifer Altre

Entomology Papers from Other Sources

Two isolates of Beauveria bassiana (Balsamo) Vuillemin were used in bioassays against the diamondback moth, Plutella xylostella (L.). One isolate, ARSEF 4543, originated from a diamondback moth larva collected in New York and the other, Mycotech CHA, is the active ingredient in Mycotrol, a product registered for control of insect species belonging to several orders. Doseresponse assays of suspended spores sprayed on larvae resulted in similar LD_50^S (518 and 614 spores per square centimeter for ARSEF 4543 and Mycotech CHA, respectively) but different slopes for the probit regression lines (0.64 and 0.89). Survival times for larvae inoculated at …

Distribution Of The Tarnished Plant Bug (Heteroptera: Miridae) Within Cotton Plants, Gordon Snodgrass

Entomology Papers from Other Sources

The within-plant distribution of the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), in cotton, Gossypium hirsutum L., was determined during June through the 1st week in August in 1992 and 1993 at Stoneville, MS. Locations of adults and nymphs in cotton were determined weekly using visual searches of whole plants or plant sections (mainstem terminals, upper and lower plant halves below the mainstem terminals). The distributions of adults and nymphs found in the morning (0900-1100 hours) in 1992 were not significantly different from their distributions found in the afternoon (1300-1500 hours). Adults had a significantly different distribution than nymphs …

Dispersal And Longevity Of Mass-Released, Sterilized Mexican Fruit Flies (Diptera: Tephritidae), Donald B. Thomas, Jesus Loera-Gallardo

Entomology Papers from Other Sources

Trap-back experiments using McPhail traps were conducted to study dispersal and longevity of mass-released, sterile Mexican fruit flies, Anastrepha ludens (Loew). The flies were released at 3 ecologically different sites in northern Mexico. Some flies were recaptured up to 9 km from the release point. However, standard distance was estimated using a regression model that indicated 240 m was the typical dispersal distance. The life expectancy of the released flies from the time of release varied from 5 to 10 d. Greatest longevity, up to 22 wk, occurred during the winter months.

Developing Mating Disruption Of Obliquebanded Leafroller (Lepidoptera: Tortricidae) In Washington State, A. L. Knight, D. R. Thomson, S. D. Cockfield

Entomology Papers from Other Sources

Field studies were conducted from 1992 to 1996 to select the most effective sex pheromone blend for mating disruption of the obliquebanded leafroller, Choristoneura rosaceana (Harris), in tree fruit orchards in Washington. Dispensers loaded with a 2-component pheromone blend, (Z)-1l-tetradecen-1-yl (Zll-14:0Ac) and (E)-1l-tetradecen-1-yl (Ell-14:0Ac), a 3-component blend that included the addition of (Z)-ll-tetradecenal (Zll-14:Ald), and a 4-component blend also including (Z)-1l-tetradecen-1-o1 (Zll-14:0H) were compared within O.l-ha orchard plots and 100-m² field cages. The addition ofZll-14:Ald to the 2 acetate components with or without Zll-14:0H did not improve mating or disruption of communication. No disruption occurred in field cages treated …

Depth Of Pupation And Survival Of Fruit Fly (Anastrepha Spp.: Tephritidae) Pupae In A Range Of Agricultural Habitats, P. Jane Hodgson, L John Sivinski, Gemma Quintero, Martin Aluja

Entomology Papers from Other Sources

In central Veracruz State, Mexico, tephritid fruit fly pupae are commonly attacked by ants, staphylinid beetles, and other predators. Excavations in 2 sites with different soil characteristics revealed that Anastrepha spp. (Diptera: Tephritidae) larvae typically burrowed no >2 cm before pupating and rarely burrowed >5 cm. At 4 field sites, pupae of the most commonly encountered local Anastrepha sp. (A. obliqua, ludens, and striata or fraterculus) were placed on the soil surface and at depths of 2.5 and 5 cm and were subsequently sampled daily for 10 d. Pupae on the surface invariably disappeared at a greater …

Chemical Attractants For Trapping Yellow Jackets Vespula Germanica And Vespula Pensylvanica (Hymenoptera: Vespidae), Peter Landolt

Entomology Papers from Other Sources

Worker yellowjackets (Hymenoptera: Vespidae) were captured in traps baited with combinations of an aqueous solution of acetic acid and polyethylene caps loaded with either butyl butyrate, heptyl butyrate, or isobutanol. Vespula germanica (F.) were captured in large numbers in traps baited with acetic acid and isobutanol or acetic acid and butyl butyrate. Vespula pensylvanica (Saussure) were captured in large numbers in traps baited with heptyl butyrate, acetic acid and heptyl butyrate, acetic acid and butyl butyrate, and acetic acid and isobutanol. Acetic acid generally enhanced the attractiveness of these other compounds to V. pensylvanica and V germanica. Vespula atropilosa …

Bait Preference By The Argentine Ant (Hymenoptera: Formicidae) In Haleakala National Park, Hawaii, Paul D. Krushelnycky, Neil J. Reimer

Entomology Papers from Other Sources

The Argentine ant, Linepithema humile (Mayr), has proven to be a threat to native arthropod species in Haleakala National Park, Maui, HI, and is also a potential threat to the park's native flora. As it continues to expand its range, an effort has been undertaken to eradicate it, or at the least, control its spread. The 1st part of this effort focused on finding a bait carrier for subsequent toxicant-based control tests. A year-long bait preference test was implemented at each of the ant's 2 infestation sites in Haleakala National Park, in which 6 solid baits and 2 liquid baits …

An Immunomarking Technique For Labeling Minute Parasitoids, James Hagler, Charles Jackson

Entomology Papers from Other Sources

A laboratory study was conducted to examine the efficacy of a novel immunomarking technique on Anaphes iole Girault, a minute parasitoid of Lygus spp. eggs. Adult A. iole were marked with the readily available mammal protein, rabbit immunoglobulin G (IgG), by 3 different application methods. Adult parasitoids were marked internally by feeding them a honey solution spiked with rabbit IgG and externally by contact exposure or topical mist. Marked individuals were then assayed using a sandwich enzyme-linked immunosorbent assay (ELISA) for the presence of the IgG marker using an antibody specific to rabbit IgG (antirabbit IgG developed in goat) . …

Impact Of Temperature And Humidity On Host-Pathogen Interactions Between Beauveria Bassiana And A Coccinellid, R. R. James, B. A. Croft, B. T. Shaffer, B. Lighthart

Entomology Papers from Other Sources

We tested the effect of 2 exposure methods and 2 environmental factors, temperature and humidity, on Beauceria bassiana (Deuteromycotina: Hyphomycetes) mycosis in Hippodamia convergens Guerin-Meneville (Coleoptera: Coccinellidae). We found that the standard EPA bioassay method of exposing nontarget insects by immersion resulted in a per-insect dose that was 5 times greater than that from spray applications. However, this difference did not significantly affect mycosis levels in a simulation of field applications conducted in the greenhouse. In contrast, differences in environmental conditions between the laboratory and greenhouse had a large effect on mycosis. Constant temperatures between 15 and 35°C had a …

Host Specificity Of Bangastemus Orientalis Capiomont (Coleoptera: Curculionidae) Introduced Into The United States For Biological Control Of Yellow Starthistle (Centaurea Solstitialis L., Asteraceae: Carduae), Gaetano Campobasso, Rouhollah Sobhian, Lloyd Knutson, Gianni Terragitti

Entomology Papers from Other Sources

The weevil Bangastemus orientalis Capiomont was selected as a candidate for the biological control of Centaurea solstitialis L. (yellow starthistle) in the United States. Its potential host range was studied during 1982, 1983, and 1984 in Rome, Italy, using populations collected from C. solstitialis in Thermi near Thessaloniki and Kozani in northern Greece. Adults laid eggs only on members of the genus Centaurea and the thistle Onopordum acanthium; eggs laid on O. acanthium hatched but 1st instars died before entering buds. There was no significant difference in the number of eggs laid on various U.S. and Italian strains of …

Herbivore Adaptations To A Low-Nutrient Food: Weed Biological Control Specialist Spodoptera Pectinicornis (Lepidoptera: Noctuidae) Fed The Floating Aquatic Plant Pistia Stratiotes, G. S. Wheeler, T. K. Van, T. D. Center

Entomology Papers from Other Sources

Performance of the specialist herbivore Spodoptera pectinicomis (Hampson) was studied when fed the floating aquatic plant waterlettuce, Pistia stratiotes L. (Araceae). Plants were either collected from 6 populations in southern Florida or from plants grown with low or high fertilizer levels. Consumption of leaves with increasing toughness resulted in increased larval mortality (>80%); most mortality occurred during the first 2 instars. Larvae compensated for low-nitrogen leaves by increasing fresh weight consumption 3-fold. Both developmental time and biomass gain were effected by the source of the plants but these performance parameters were not directly related to either leaf toughness or …

Using Ant Species (Hymenoptera: Formicidae) As A Biological Indicator Of Agroecosystem Condition, Steven L. Peck, Betty Mcquaid, C. Lee Campbell

Entomology Papers from Other Sources

Ant species assemblages have been used as biological indicators of environmental condition in many different ecosystems. To assess the potential of using ants as environmental indicators of agroecosystem condition, ants were collected from a stratified random sample of agricultural fields planted in annually harvested herbaceous crops at 90 sites in North Carolina and Virginia. The ants were identified to species and correlations with soil, management and crop variables were examined as the 1st step in developing an environmental indicator of agroecosystem condition. A total of 41 species of ants was found. Ant species assemblages were found to differ significantly between …

Selectivity Of Whitefly Traps In Cotton For Eretmocerus Eremicus (Hymenoptera: Aphelinidae), A Native Parasitoid Of Bemisia Argentifolii (Homoptera: Aleyrodidae), K. A. Hoelmer, W. J. Roltsch, E. C. Chu, T. J. Hekneberry

Entomology Papers from Other Sources

Yellow sticky traps are widely used for monitoring and management of whiteflies and certain other pests and have also been used to monitor their natural enemy activity. A new, nonsticky whitefly trap (CC trap), standard yellow sticky cards, and clear colorless sticky cards were evaluated in cotton (Gossypium hirsutum L.) to compare their attractiveness to Eretmocerus eremicus Rose and Zolnerowich, an aphelinid parasitoid of Bemisia argentifolii Bellows & Perring [=Bemisia tabaci (Gennadius) B-strain 1 that is indigenous to southwestern U.S. deserts. The CC traps caught an average of 264 adult whiteflies during 24-h test periods compared with 523 …

Reverting Conservation Reserve Program Lands To Wheat And Livestock Production: Effects On Ground Beetle (Coleoptera: Carabidae) Assemblages, B. Wade French, Norman C. Elliott, Richard C. Berberet

Entomology Papers from Other Sources

Highly erodible lands enrolled in the Conservation Reserve Program soon will revert to agricultural production. This study was designed to determine the effects of reversion of Conservation Reserve Program lands to wheat and livestock production on ground beetle assemblages. Reversion strategies included no reversion of Conservation Reserve Program grass (unmanaged bluestem), simulated grazing of Conservation Reserve Program grass (managed bluestem), minimum- tillage practices for wheat production, and no-tillage practices for wheat production. A randomized block experimental design was established with 4 replicates. More ground beetles were captured in pitfall traps in 1995 than in 1996, and abundances within years differed …

Oviposition Response Of Cotesia Plutellae (Hymenoptera: Braconidae) To Sterile And Normal Diamondback Moth (Lepidoptera: Plutellidae) Larvae, J. S. Okine, E. R. Mitchell, J. Carpenter, C. Y. Hu

Entomology Papers from Other Sources

Augmentative release of the endoparasitoid Cotesia plutellae (Kurdjumov) to control diamondback moth, Plutella xylostella (L.), in cabbage, Brassica oleracea variety capitata (L.), would be expensive for growers if done continually during a growing season. A method for establishing released parasitoids would be very beneficial in the control of this pest. One method under consideration is to use sterile diamondback moth larvae deposited on 'nursery' collard plants as hosts for C. plutellae to allow the parasitoid to build up in numbers and spread into adjacent cabbage fields. Therefore, the ability of C. plutellae to accept and develop successfully in normal and …

Monitoring Solitary Bees In Modified Wildland Habitats: Implications For Bee Ecology And Conservation, Gordon Frankie, Robbin W. Thorp, Linda E. Newstrom-Lloyd, Mark A. Rizzardi, John F. Barthell, Terry L. Griswold, Jong-Yoon Kim, Shanthi Kappagoda

Entomology Papers from Other Sources

The long-term goal of this study was to use solitary bees to assess the impact of advancing Africanized honey bees (Apis mellifcra scutellata Lepeletier) on the native California bee fauna. Cavity-nesting, solitary bee species were systematically monitored in wooden trap nests at 6 sites in northern central California from 1990 to 1992. Three sites were in the San Joaquin Valley in wildlife refuges or preserves; 3 were in coastal mountain or Sierran foothill parks or reserves. Differences in frequencies of nesting bees were observed and recorded among sites and habitats through time. A Poisson regression indicated that all explanatory …

Influence Of Soybean Canopy Closure On Predator Abundances And Predation On Helicoverpa Zea (Lepidoptera: Noctuidae) Eggs, Aaron C. Anderson, Kenneth V. Yeargan

Entomology Papers from Other Sources

Planting soybeans [Glycine max (L.) Merrill early and in narrow rows is the most effective cultural control for preventing outbreaks of Helicoverpa zea (Boddie) in soybean. Soybeans planted early in narrow rows close canopy earlier in the season compared with soybeans planted late and in wide rows (i.e., leaves of plants from adjacent rows touch each other and eventually become densely interwoven). Although several lines of research have established dramatically higher mortality for corn earworm eggs or small larvae in closed canopies, none has found the cause. In 1994 and 1995, we planted soybeans in every combination of early …