In previous studies, we demonstrated cross-antagonism in pheromone perception between pheromone components of the two corn (Zea mays L.) borers Sesamia nonagrioides Lefèbvre (Lepidoptera: Noctuidae) and Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae) in the laboratory and in the field. The two pheromone components identified as responsible for this cross-antagonism were Z 11-16:Ald, a mino...

Field plots of Tifton loamy sand were treated with phenamiphos for control of root-knot nematodes in a multiple-crop system of turnips, field corn, and southern peas. Preplant applications of phenamiphos protected roots of turnips and corn from damage by root-knot nematodes. Concentrations of phenamiphos at application in the 0-15-cm soil layer were near 6 mug/g on turnips and near 4 mug/g on c...

The population dynamics and damage potential of an undescribed species of Belonolaimus were investigated for 2 years in a naturally infested commercial corn field in southwestern Kansas and for a third year in a field microplot study. Population trends and vertical distribution of nematode life-stages were monitored and relationships between corn yields and initial or midseason nematode populat...

Although field corn pest management has remained largely dependent on restricted-use, broad-spectrum insecticides (organophosphates, carbamates and pyrethroids) for corn rootworm control, this situation is changing rapidly with the 2003–2004 market entry of highly selective tactics, including genetically modified Bt rootworm corn hybrids and nicotinoid insecticidal seed treatments labeled for c...

Introduction Organic sweet corn can be successfully grown in Iowa, based on our agricultural resources and our extensive experience with field corn production. With the continuing growth of organic consumers in the U.S., premium prices can be obtained for organic sweet corn from Iowa. With the potential for major markets across the U.S. identified, research on production, harvesting and process...

From late July to early November 1979, 1980, and 1982, red-winged blackbirds were collected in sunflower, field corn, and at two roosts in Cass County, North Dakota. Their espophageal contents were examined, and they were also assessed for stage of molt. Both males and females contained a higher proportion of sunflower in sunflower fields than corn in field corn (P < 0.05). Male redwings consum...

European corn borer, Ostrinia nubilalis (Hübner), is a major pest of processing snap bean because larvae are contaminants in pods. The incidence of O. nubilalis-contaminated beans has become uncommon in New York, possibly because widespread adoption of Bt field corn has suppressed populations. Snap bean fields located where Bt corn has been intensively grown in space and time may be at lower ri...

J. Econ.Entomol. 79: 1658-1661 (1986) ABSTRACT Processingsweet corn harvested from commercial fields in western New York was graded for insect injury and presence of larvae of European corn borer, Ostrinia nubilalts (Hubner); fall armyworm, Spodoptera !rugiperda (]. E. Smith); and corn earworm, Heliothts zea (Boddie), during 1982 and 1983. In both years, boring injury caused by O. nubilalts was...

The adoption of no tillage (NT) in crop production has been encouraged primarily due to its more significant benefits to the environment compared with other conservation tillage systems. There are nevertheless concerns about NT corn (Zea mays L.) performance from both shortand long-term perspectives. This study was conducted near Burlington, Nashua, Newell, Sutherland, and Crawfordsville in Iow...