In the past couple of weeks, high temperatures have been well above average, with dew point temperatures above grain temperatures. This can cause grain bins to act like solar collectors on the south side. The southwest side heats up, causing the air to rise and dry the grain, says Kris Kohl, Iowa States University agricultural engineer.
By Brett C. Ramirez* and Harishchandra Jadhav, Iowa State University Department of Agricultural and Biosystems Engineering Graduate Research Assistants. Proper air distribution from planned ceiling inlets plays a major role in providing an environment that is acceptable for both pigs and workers.
Ethanol plants need to be especially cautious of moldy corn this spring due to a humid fall and excessive amounts of corn stored in outdoor piles. Charles Hurburgh, Iowa State University Extension grain quality specialist and ABE professor, says mid- to late February will bring reports of moldy corn, hot spots and blue eye mold … Continue reading Hurburgh: Beware of moldy corn this spring
Don’t assume application requirements of new products and strategies to control resistant weeds will mimic those of glyphosate and other products you’re familiar with, cautions Dr. Mark Hanna, Iowa State University Extension Agricultural Engineer. Look now at labels of herbicides you’re considering for use next spring to prepare for proper nozzles and travel speeds, and … Continue reading Hanna: Match sprayer to new herbicides
Hydrogen sulfide gas is a serious issue in and around barns with liquid manure storage. The decomposition of organic matter in manure results in the release of several gases: ammonia, carbon dioxide, methane and hydrogen sulfide among them. Most of the time these gases are emitted at low levels, but any time manure is being agitated … Continue reading Pit gases pose a danger in beef barns
“Not many people realize this, but Iowa is in the top third of states in terms of solar potential,” said Mark Hanna, agricultural engineering specialist with Iowa State University Extension and Outreach. “The cost per watt for generating electricity has been dropping steadily, down to about $3 per watt as opposed to $10-15 per watt … Continue reading Hanna: Installing solar arrays becomes more attractive for farmers
Better distribution of manure nitrogen can help reduce the need to apply supplemental N as sidedressing in spring, thus resulting in cost savings and water quality benefits.
Various aspects of farmland drainage will be the focus of a daylong workshop March 3 at the Iowa Bioprocess Training Center in Eddyville. The program is from 8:30 a.m. to 4:15 p.m. “This workshop is being offered due to the increased interest in this topic the past year,” says Kapil Arora, field agricultural engineer with Iowa … Continue reading ABE faculty and extension specialists to present at farmland drainage workshop
Dan Andersen, an ag engineer at Iowa State University, said between 25 and 30 percent of nitrogen, phosphorus and potassium needs are provided through manure usage. “We have plenty of room for more,” he told producers at the Iowa Pork Congress here Jan. 25.
By Brett C. Ramirez, Iowa State University Department of Agricultural and Biosystems Engineering Graduate Research Assistant. As we enter the middle of winter, it is essential we revisit the importance and role of Minimum Ventilation. It is understood that poor ventilation during the winter months can lead to moisture problems, hazardous gas build-up, and in general, … Continue reading Ramirez: Minimum Ventilation – Design versus operation
When Iowans talk about water quality, they sometimes think the major problem is manure. “I’m a big fan of the nutrient reduction strategy,” says Iowa State University Extension Agricultural Engineer Dan Andersen. “I’m not a big fan of when people call it the manure reduction strategy.” Andersen was one of the speakers at a manure management workshop … Continue reading Andersen: Workshop offers insight on water quality issues
The U.S. News and World Report named Iowa State’s agricultural and biosystems undergraduate program number one among all national universities and first among public universities this September—a tie with Purdue University. Iowa State was ranked number two last year.
Going against almost all other industry currents, farming retirements exist only on paper, echoes Charles Schwab, a professor of agricultural and biosystems engineering at Iowa State University. “Farmers keep working at some level and you see these injuries mount. We’ve recorded so many farm injuries with 70- and 80-year-olds and that makes agriculture so different.”
When manure is disturbed or agitated, H2S is released into the air “in bursts,” says Dan Andersen, ag and biosystems engineering professor at Iowa State University. Air concentrations can increase a thousand-fold, reaching deadly levels within seconds.