DES MOINES, Iowa, June 30, 2011 - With today's high feed costs, silage management can have a significant impact on a producer's bottom line. That's why Pioneer Hi-Bred, a DuPont business, recommends growers pay attention to hybrid selection, field conditions and harvest timing/management to help make the most of their silage crops.
"It always comes down to good management," says Steve Soderlund, Pioneer nutritionist and key livestock account
manager. "Decisions made throughout the growing season can affect silage success and a producer's ability to be more profitable."
Lay the foundation
Soderlund says, when it's seed selection time, growers should look for hybrids that not only provide good yield but also above average fiber digestibility and good grain (starch) content. In addition, growers should consider planting hybrids of varying maturities to help accommodate harvest timing and ensure adequate moisture throughout harvest.
"If we can't grow it, it doesn't matter what the feed value is," Soderlund says. "That's the foundation we need to be working from."
Look at agronomics, field conditions
Once hybrids are in the ground and growing, as they are now, it's critical to know the state of individual fields and individual hybrid maturities so growers can target harvest dates.
"Working with your agronomist and nutritionist to figure out what quality you're shooting for, as well as yield, is key," Soderlund says.
As growers near their anticipated harvest date, they should walk their fields to evaluate how the crop is progressing. Harvest timing can be affected by many factors beyond just weather conditions, including soil fertility, weed control and pest management. These factors can influence whole plant moisture content and drydown rates.
Time harvest with performance in mind
Harvest timing is critical to producing high-quality corn silage that delivers optimal performance for livestock. Soderlund says moisture and maturity are the two key harvest considerations.
"Typically, we like to see corn silage put up in the 63 to 68 percent moisture range," Soderlund says. "Generally, the kernel milkline will be half to three-quarters at this moisture range. However, growers should keep in mind that milkline is not always a good indicator in some hybrids, so overall moisture is still the best measurement."
Accurately determining whole plant moisture is important because harvesting corn for silage too early (high moisture content) or too late (low moisture content) can affect forage yield, quality and silage fermentation.
According to Soderlund, some growers push the maturity window and may pick up more wet tons, but reduce their quality because the starch doesn't have time to fill in.
"It's amazing how much starch accumulation we see between early dent and three-quarters milkline, We will typically see a 1 percent point increase in starch content for every 1 percent increase in dry matter content during this stage of development."
Adequate kernel processing is important for optimal silage digestibility. Soderlund recommends setting the kernel processor at 3 mm to start out and make adjustments if necessary throughout harvest. "Ideally, we would like to see all kernels fractured and no cob pieces larger than your thumbnail."
Manage silage with a good inoculant
"I truly believe using a good inoculant today is a good management tool," Soderlund says.
Soderlund says there are several high-quality products on the market designed for specific needs, whether that's enhanced fermentation efficiency, reduced dry matter losses, improved aerobic stability or bunklife, improved fiber digestibility, etc.
Pioneer has developed crop-specific combinations of proprietary bacterial strains that can provide these benefits as well as help improve overall forage performance and help reduce ration costs. These Pioneer® brand inoculants include 11CFT, 11C33 and 1132 for corn silage and 11B91 and 1189 for high-moisture corn.
In addition, many growers are now using these need-specific inoculants in different parts of the bunker or silo or using multiple silos so they can address specific management and timing considerations.
"Just like putting the right seed in the right acre to maximize production, we need to be thinking of inoculants in the same way," Soderlund says. "One size doesn't necessarily fit all, so we now have choices that are designed for specific needs."
Finally, covering is critical. Too often growers wait until the silo is completely full before covering. That two- or three-day delay, especially if there is rain in between, will lead to some spoilage loss on top. Those losses can affect the bottom line, so anything that can be done to minimize losses is crucial in a time of high feed costs.
"Reducing shrink or managing the face of the bunker, keeping loose material cleaned up and getting the cover on as quickly as possible - those things are all going to pay dividends this year," Soderlund says.
For more information on corn silage management and/or inoculants, contact your local Pioneer sales professional.
Pioneer Hi-Bred, a DuPont business headquartered in Des Moines, Iowa, is the world's leading developer and supplier of advanced plant genetics, providing high-quality seeds to farmers in more than 90 countries. Pioneer provides agronomic support and services to help increase farmer productivity and profitability and strives to develop sustainable agricultural systems for people everywhere. Science with Service Delivering SuccessTM.
DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 90 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.