Life Sciences Commons^™

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 …