Wet weather has caused some cotton failures and enough damage to soybean stands in a few areas where replanting is being considered. Continue reading
All posts by Angela McClure, Extension Corn and Soybean Specialist
Topdressing Corn
Although most early planted upland corn looks pretty good for the year, I have had a number of discussions about about streaky, yellow corn and applying more nitrogen. Continue reading
Basic Irrigation Needs of Corn, Beans and Grain Sorghum
Dry weather has already plagued some parts of the state. We do have some likely rains in the forecast, but for those who miss rain once again this weekend and are thinking about turning on the irrigators, included are some basic irrigation amounts for corn, soybeans and grain sorghum. Continue reading
Grain Sorghum — Stand Issues and Replant Considerations
Dry weather following sorghum planting is causing inadequate preemergence herbicide activation and thin stands, and I have gotten a number of calls requesting info on the recommended minimum stand in replant situations. Continue reading
Corn Planting in Full Swing (Finally)
Planters are rolling this week as growers race to get corn in the ground. Some producers have reported starting on soybeans or grain sorghum, as they wait for wet fields to dry up enough to get back to corn. Continue reading
Grain Sorghum as Alternative in 2015
I have had a number of calls about grain sorghum this week as lower production costs compared to corn and the latest increased premium offered for Memphis delivery have driven up interest in this crop. Check out our newest regional sorghum production guide at utcrops.com. Some pre-plant reminders are included about sorghum for those who have not grown sorghum lately (or ever): Continue reading
Yellow Tops in Soybean
I have had a good number of calls, emails and texts with photos of soybean plants with classic potassium deficiency symptoms showing in the upper leaves. Some fields may also have some SDS as well which is a separate issue. After a little investigating, it appears that the plants are experiencing a K deficiency in th Continue reading
Grain Sorghum Harvest Aid Options
Desiccant options for grain sorghum are more limited than other crops. Basically we are limited to glyphosate or sodium chlorate. Aim herbicide can be included with another material where morningglory vines are dense enough to interfere with the combine. Gramoxone is not labeled for desiccation of grain sorghum.
Glyphosate products: apply only after seed have reached 30% moisture content or less and harvest is at least 7 days out. Rates are from 32 oz to 64 oz/A in 10 to 20 gallons water per acre by ground or 3 to 10 gallons water per acre by air. Glyphosate is a slow acting material and has not been shown to measurably reduce seed moisture in small plot research. It should not be used on sorghum grown for seed production.
Sodium chlorate products: apply 7 to 10 days before harvest at labeled rate. There are a number of products available that have different rates of active ingredient. Consider using the higher recommended rate if applying when weather is cloudy and/or damp.