On susceptible hybrids, a foliar fungicide application at tasseling/silking is likely necessary. Farmers and agronomists are advised to scout fields, especially all fields planted to NCLB-susceptible hybrids.
Southern rust was detected July 6, 2015, near Lonoke, Altheimer, and Tupelo, which are located in Lonoke, Jefferson, and Jackson Counties, respectively. These are the first confirmed reports of southern rust for the 2015 cropping season.
This is shaping up to be another “interesting” year for corn in Missouri and most of the Midwest. Prolonged periods of wet weather and then flooding delayed planting or led to replanting. Overall the corn crop is behind normal. There is also a wide range in growth stages of corn across the state and even in individual fields.
Corn planting was later than normal and later than last year because of usually wet conditions across most of the state. The unusual fluctuations in air temperatures and soil temperatures further impact corn germination and emergence as well as seedling vigor and thus impact the amount of seed decay, seedling blight and crown rot which may occur.
Across the state of Iowa, much of the crop is reaching V5 to V6 and thoughts of an early fungicide application have probably crossed some people’s minds. Every year, we evaluate and compare registered fungicides applied at either V5 to V6, R1 alone, or At V5 to V6 plus R1 for foliar disease management and effects on yield.
With much of Ohio corn now planted statewide, growers who can identify any emergence problem early on will likely have a better chance of coming up with a successful solution to the issue, said an agronomist in the College of Food, Agricultural, and Environmental Sciences at The Ohio State University.
Grain industry representatives are touting the effectiveness of the One Sample Strategy, a standardized testing method for aflatoxin. The program is administered by the Office of the Texas State Chemist, part of Texas A&M AgriLife Research.
A website developed by plant pathologists from Purdue University and a nationwide partnership of research institutions could help farmers better understand and respond to the threat of mycotoxins and ear rots in corn.