Soybean Specialist: Some Farmers May Need To Revise Planting Intentions

Some Indiana soybean farmers are now facing crucial decisions on how to recover from erratic weather that is either delaying their plantings or forcing them to replant, said Purdue Extension soybean specialist Shaun Casteel in Purdue Agriculture News.

Farmers in many areas still needed to plant soybeans as of the first week of June because of large amounts of rain, while others may need to replant. Casteel likened the spring warm-up and field dry-out conditions to a roller coaster.

“Just like any good roller coaster, the rise of temperatures peaked so it could plummet downward while the intensity and frequency of rain skyrocketed,” Casteel said. “All this occurred in our typically prime planting weeks.”

He noted that only a third of Indiana’s soybean crop was planted by May 18. But farmers caught up over the following two weeks by getting nearly half of the crop in the ground. As of June 1, they had planted 81% of it. There were late plantings in three of the past five years.

The need for planting adjustments is greatest for farmers in the central and northern parts of the state. Farmers in the southern half generally have more time because of the longer growing season there.

Casteel said farmers still planting soybeans in June need to consider seeding rates, row width and the maturity group of seeds.

“We need to set the stage for the best possible return on late plantings,” he said.

He offered this guidance:

• Seeding rate: Planting in the first half of June requires increasing seeding rates 10-20 percent to foster quicker row closure and higher pod height with fewer days to flowering. Increased seeding rates will also be needed in those fields that have heavy corn residue, which has been prevalent this planting season because of limited breakdown over the winter.

Farmers who typically plant 140,000 seeds per acre in 15-inch rows should increase the rate to about 170,000 seeds per acre in the second week of June; 185,000 in the third week; and 200,000 in the fourth week. Soybeans will produce fewer main-stem nodes (attachment points of trifoliates and ultimately pods) as planting is delayed, so the increased seeding rates will also help to overcome the shortage in node production.

• Row width: Farmers planting 30-inch rows should consider planting narrower rows with the limited time to flowering. Soybeans typically have a yield advantage of 5-10% for soybeans planted in narrow rows (15 inches or less) compared with wide, 30-inch rows.

“This difference will be even more prominent in late-planting situations,” Casteel said.

Wide rows take nearly 25 days longer to canopy compared with 15-inch rows and 40 days longer than 7.5-inch rows.

• Maturity group: Full-season varieties should be planted until June 15 for the northern quarter of the state, June 20 for the central half and June 25 for the southern quarter. Varieties should be dropped by one-half maturity group from the full-season variety for the area, such as from 3.5 to 3.0, after those dates and planted for another two weeks before farmers consider other alternatives. The lower the maturity group the faster the plant will develop flowers, pods and seeds.

“If you are in a very late planting situation, I suggest back-dating 90 days from the typical fall freeze in your region to determine if you have enough growing season to mature a soybean crop,” Casteel said. “My hope is that you will not need to make that determination.”

Leave a Reply

Crop Inputs Stories

Giant Ragweed
HerbicidesSurvey Provides Insights On Giant Ragweed In The Corn Belt
May 2, 2016
A new survey published in the journal Weed Science offers insights into the distribution and management of giant ragweed, a Read More
Truck dumping dry fertilizer
FertilizerFertilizer Logistics Q&A: Southern States’ Joe Wlodkoski
May 2, 2016
Joe Wlodkoski, Director of Agronomy Procurement, Fertilizer, Southern States Cooperative, is a 40-plus year fertilizer industry veteran. He is quite Read More
West Central Dome structure
FertilizerFertilizer Logistics 2016: All Clear, So Far
May 1, 2016
After a relatively hairy early start to the spring fertilizer movement season with flooding in Louisiana and St. Louis, things Read More
MicronutrientsCharah Add Three Warehouses For SUL4R-PLUS Fertilizer
April 28, 2016
Charah, Inc., a total solutions company providing unparalleled service and innovation for the coal-fired power generation industry, announced today that Read More
Trending Articles
Eric SfiligojMissing The Family Ties In Agriculture
April 25, 2016
By its nature, the agriculture market is cyclical. Up and down cycles come and go with a regular pattern. For Read More
HerbicidesHerbicide Resistance In Waterhemp Continues To Grow
April 22, 2016
Twenty-five years ago, waterhemp was virtually unknown to Illinois farmers. Today, the broadleaf weed blankets corn and soybean fields across Read More
Eric SfiligojBiotech Corn Drop More Economics Vs. Consumer Rejection
April 18, 2016
Since their introduction into the agricultural marketplace, biotech crops has steadily grown in acreage in the countries of the world Read More
Crop InputsBayer: 5 Reasons We Disagree With Maryland Neonic Ban
April 12, 2016
We’re disappointed that the Maryland legislature chose not to stand up for sound science and the rights of Maryland’s homeowners Read More
Corn
OpinionChallenging Global Economic Conditions Putting More Heat On U.S. Ag Retailers
April 7, 2016
There it is. That vague, slightly sickening feeling in the pit of my stomach. Things are getting weird out there. Read More
ScoutPro iPad
Precision AgWhat’s Trending In Soil Testing And Scouting
April 6, 2016
Keeping up on soil testing and scouting, especially following unusual weather conditions, can play a role in maximizing yields. Soil Read More
Latest News
Giant Ragweed
HerbicidesSurvey Provides Insights On Giant Ragweed In The Corn B…
May 2, 2016
A new survey published in the journal Weed Science offers insights into the distribution and management of giant ragweed, a Read More
Truck dumping dry fertilizer
FertilizerFertilizer Logistics Q&A: Southern States’ Joe Wlod…
May 2, 2016
Joe Wlodkoski, Director of Agronomy Procurement, Fertilizer, Southern States Cooperative, is a 40-plus year fertilizer industry veteran. He is quite Read More
Eric SfiligojReasons For Hope In Commodity Prices
May 2, 2016
For many months now, the doomsayers have ruled the day in agriculture. Too much supply with too little demand would Read More
West Central Dome structure
FertilizerFertilizer Logistics 2016: All Clear, So Far
May 1, 2016
After a relatively hairy early start to the spring fertilizer movement season with flooding in Louisiana and St. Louis, things Read More
BAICOR
CropLife 100BRANDT Acquires Utah Specialty Fertilizer Company
April 28, 2016
BRANDT, a leading agriculture retailer and manufacturer of specialty ag products, has acquired a majority interest in BAICOR, L.C. BAICOR, Read More
Soybean field
Industry NewsVerdesian Life Sciences Adds Vice President Of Business…
April 28, 2016
Verdesian Life Sciences has announced the addition of Marc Treurniet to the plant health and nutrition company’s management team. Treurniet Read More
ManagementBiotech Crops Developments and Millennials
April 28, 2016
Editors Eric Sfiligoj and Paul Schrimpf talk about the latest activities in biotech crops and a major shift in the Read More
Industry NewsNachurs-Alpine, Pathway Biologic Extend Marketing Agree…
April 28, 2016
Nachurs-Alpine Solutions (Marion, OH) and Pathway Biologic (Plant City, FL) announce an extension to their exclusive marketing agreement specific to Read More
MicronutrientsCharah Add Three Warehouses For SUL4R-PLUS Fertilizer
April 28, 2016
Charah, Inc., a total solutions company providing unparalleled service and innovation for the coal-fired power generation industry, announced today that Read More
Spenser Forgey, Yahama Fortix
FungicidesIndiana Farmer Wins Arysta LifeScience FORTIX Fungicide…
April 28, 2016
Arysta LifeScience North America recently presented Spenser Forgey, a grower from Young America, IN, with a new 2016 Yamaha Grizzly Read More
Corn Field
HerbicidesNew Wilbur‐Ellis Herbicide Targets Volunteer Corn
April 28, 2016
Wilbur‐Ellis Co., a recognized leader in marketing and distribution of crop protection products, as well as precision agriculture technology, has Read More
StewardshipNRCS To Help Farmers Measure Conservation Impacts On Wa…
April 27, 2016
The USDA has announced the availability of $2 million to help farmers install edge-of-field stations that monitor water quality as Read More
Planter in Iowa
EquipmentTop 10 Twitter Pics For #Plant16
April 27, 2016
Despite some wet weather in parts of the Midwest, growers and ag retailers are working feverishly to plant this year’s Read More
HerbicidesHELM AGRO Launches New HELM Sulfentrazone 4F Herbicide
April 26, 2016
HELM AGRO US, Inc. has announced the federal Section 3 registration of its new HELM Sulfentrazone 4F herbicide. Classified as a Read More
Valley Irrigation Valley 8000 series on corn
EquipmentValley Irrigation Receives Environmental Stewardship Ho…
April 26, 2016
Valley Irrigation has been recognized as a Groundwater Guardian Green Site by the Groundwater Foundation. The Groundwater Guardian Green Site Read More
Eric SfiligojMissing The Family Ties In Agriculture
April 25, 2016
By its nature, the agriculture market is cyclical. Up and down cycles come and go with a regular pattern. For Read More
HerbicidesHerbicide Resistance In Waterhemp Continues To Grow
April 22, 2016
Twenty-five years ago, waterhemp was virtually unknown to Illinois farmers. Today, the broadleaf weed blankets corn and soybean fields across Read More
ManagementIllinois Leads The Nation In 4R Certified Nutrient Mana…
April 22, 2016
As Illinois agriculture works to educate farmers about minimizing environmental impact and optimizing the use of ag nutrients, Illinois now leads Read More