Integrated Crop Management News

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Hail on Corn

June 6, 2011

By Roger Elmore, Department of Agronomy

Corn progress is back on track thanks to recent warm weather. This is indicated by heat unit accumulation for May 1 planting dates hovering slightly above average (107 percent of average statewide). Corn development across the state ranges from about V2 to V9 (second to ninth leaf stages) thanks to the wide range of planting dates this year.

Sampling for Nematodes that Feed on Corn This Season

June 5, 2011
Corn at V6 stage of development

Recent research results indicate that V6 growth stage is a good time to collect samples to check for damaging levels of plant-parasitic nematodes that feed on corn. Useful tips for sampling for these pathogens of corn are given in this article.

Stalk Borer Scouting Dates for 2011

June 3, 2011
Stalk borer larva

Corn is infested by stalk borer when stalk borer larvae move to find bigger host plants, typically adjacent to grassy edges of emerging corn. The most susceptible stages of infestation are at V1-V5, or about 2-24 inches in plant height.