INTRODUCTION Corn depredation by red·winged blackbirds (Agelaius phoeniceus) has been an agricultural problem in southwestern Ontario for many years. Large marsh areas along the shoreline of Lakes Erie and St. Clair provide ideal habitat for breeding and roosting. Concurrently, the vast monocultural field corn acreages in Kent and Essex Counties have over the years been the centers for blackbir...

Citation: Wendt LM, Murphy JA, Smith WA, Robb T, Reed DW, Ray AE, Liang L, He Q, Sun N, Hoover AN and Nguyen QA (2018) Compatibility of High-Moisture Storage for Biochemical Conversion of Corn Stover: Storage Performance at Laboratory and Field Scales. Front. Bioeng. Biotechnol. 6:30. doi: 10.3389/fbioe.2018.00030 compatibility of high-Moisture storage for Biochemical conversion of corn stover:...

Extensive aflatoxin occurrence in corn both before and after harvest has prompted investigation to identify conditions contributing to crop infection by toxin-producing fungi. This presentation will attempt to summarize the preliminary observations of fungal-corn associations in the field in response to concern about this type of aflatoxin contamination. In the fall of 1972, a study of field co...

T demonstrations by Losey et al. (1) and Hansen and Obrycki (www.ent. iastate.eduyentsocynch 99yprogyabsy D81.html) that milkweed leaves dusted with heavy concentrations of Bt corn pollen are toxic to Monarch butterfly larvae (Danaus plexippus) feeding on them were consistent with the known toxicity of Bt endotoxin to Lepidoptera in general and the expression of Bt endotoxins in the pollen of t...

This study was designed to evaluate the improved version of the Root Zone Water Quality Model (RZWQM) using 6 yr (1992-1997) of field-measured data from a field within Walnut Creek watershed located in central Iowa. Measured data included subsurface drainage flows, NO3-N concentrations and loads in subsurface drainage water, and corn (Zea mays L.) and soybean [Glycine mar (L.) Merr.] yields. Th...

A methodology was developed to estimate quantities of crop residues that can be removed while maintaining rain or wind erosion at less than or equal to the tolerable soil-loss level. Six corn and wheat rotations in the 10 largest corn-producing states were analyzed. Residue removal rates for each rotation were evaluated for conventional, mulch/reduced, and no-till field operations. The analyses...

Seed-based pest management tools, such as transgenes and seed treatments, are emerging as viable alternatives to conventional insecticide applications in numerous crops, and often occur as coupled technologies. Seed-based technologies have been readily adopted in maize, for which ecological studies are needed to examine effects to farmland biodiversity. We compared the response of nontarget col...

Field and laboratory studies were conducted in 2000 and 2001 to determine the feasibility of mass marking western corn rootworm adults, Diabrotica virgifera virgifera LeConte, with RbCl in the field. Results showed that application of rubidium (Rb) in solution to both the soil (1 g Rb/plant) and whorl (1 g Rb/plant) of corn plants was optimal for labeling western corn rootworm adults during lar...

Genetically engineered corn hybrids that contain a cry gene from the bacterium Bacillus thuringiensis Berliner (Bt) are gaining popularity for controlling the corn pest Ostrinia nubilalis (Hübner). Continuous use of Bt corn, however, could select for O. nubilalis that are resistant to this corn. Monitoring for insect resistance is important, because it could help maintain the Bt technology. A p...

In soil moisture retrieval by passive microwave technique at lower frequencies, the model is often used. To eliminate vegetation effects at higher frequencies than C-band, a Matrix-Doubling microwave emission model is developed in this paper to study the single scattering albedo and transmissivity of corn with different height at C (6.925GHz), X (10.65GHz) and Ku (18.7GHz) bands. The comparison...