Vault Past Nitrogen-Drained Soils

Fresh rhizobial inoculants are recommended for soybeans planted into continuous corn acres this spring.

With soybean production expected to approach a record 80-million acres in 2009, many growers will be rotating land back into soybeans after several years of continuous corn. When doing so, university experts say, growers should expect significantly depleted populations of nitrogen-fixing Rhizobia bacteria in these soils. To avoid the performance losses typically associated with inadequate nitrogen, these experts are recommending that producers inoculate their soybean seed with fresh rhizobial inoculants.

These naturally occurring Rhizobium bacteria release compounds that cause legumes, such as soybeans, to develop nodules on their roots. The bacteria move into these nodules where they grow and multiply. In this protected environment, they also extract environmental nitrogen from the air and turn it into a nitrogen form the plant can use to grow and produce a crop. Commercial inoculants — such as VAULT from Becker Underwood — use Rhizobia strains that are selected for their ability to fix nitrogen, and, ultimately, increase the yield of the soybean plant. Without adequate numbers of these highly active fresh Rhizobia, crop performance suffers.

“Typically, fields that have been in continuous corn for several years will have Rhizobium cells, but the populations are very low and they don’t generate enough nodules to supply adequate nitrogen for a high-yielding soybean crop,” explains Jim Beuerlein, professor of agronomy and soybean research and extension specialist for The Ohio State University. “In this type of situation, it is very likely that a grower will see a large yield response from inoculation.”

University studies show that growers normally can expect an average yield benefit of 2.5 bushels per acre from the use of inoculants in fields that are rotated to soybeans every other year. However, the yield benefit often is significantly greater in fields where soybeans have not been planted in several years, such as continuous corn or Conservation Reserve Program acres.

Charlie Hale, U.S. inoculant product manager for Becker Underwood, says there is evidence that Rhizobia become less productive, or “lazy,” when exposed to high nitrogen levels, as is typically the case on ground planted to corn. Rhizobia that survive in the soil from one year to the next are not necessarily the best strains when it comes to fixing nitrogen for the soybean plant.

“As farmers look to reestablish their regular crop rotations and think about planting more soybeans in 2009, they really need to make sure they inoculate their soybeans with a fresh, high-quality rhizobial inoculant,” he says. “This will help ensure that Rhizobia populations are present in the numbers and strains needed for maximum nitrogen fixation and, ultimately, greater yield.”

Inoculants offer additional benefits, Hale notes. Well-nodulated soybeans, for instance, are capable of producing a nitrogen credit of as much as 120 pounds per acre, although around 40 pounds per acre is more typical. This nitrogen is in the soil, in a highly stable form, and available for use by the next year’s corn or small grains crop. This nitrogen also reduces the amount of costly synthetic nitrogen fertilizer the producer must purchase in order to produce the following year’s crop, he says.

There is an environmental benefit, too. “The production of synthetic nitrogen fertilizers generates large volumes of carbon emissions,” Hale says. “Reducing the need for synthetic nitrogen fertilizer decreases greenhouse gas emissions. Also, by applying less nitrogen to their fields, growers lower the risk of nitrogen leaching into the groundwater.”

Becker Underwood produces three VAULT brand soybean inoculants. These include VAULT LVL, a low-volume liquid inoculant system that also includes a biological fungicide for increased disease protection. Initially introduced as a professionally applied product, VAULT LVL has recently received approval for on-farm application by growers. Additional VAULT formulations include VAULT NP (formerly known as NOD+) and VAULT SP (sterile peat).

Leave a Reply

Latest News
ManagementWashington Update, Dow-DuPont Earnings, and the Passing…
April 27, 2017
Editors Paul Schrimpf and Eric Sfiligoj talk about the latest Beltway news, crop protection company 1st quarter numbers, and the Read More
BRANDT
CropLife 100Former PotashCorp COO Joins BRANDT Board
April 27, 2017
BRANDT has announced the appointment of another industry veteran to its board of directors. David Delaney, most recently EVP and Read More
Syngenta headquarters in Basel, Switzerland
Crop InputsFortune: Inside China’s $43 Billion Bid for Food …
April 26, 2017
(Via Fortune.com) The worst famine in human history occurred in China from 1959 to 1961. An estimated 34 million people Read More
Syngenta Sign
Crop InputsSyngenta Announces Changes in Board of Directors
April 26, 2017
ChemChina and Syngenta announced changes relating to the new Board of Directors of Syngenta following the closing of the ChemChina Read More
Crop InputsBioSafe Systems Introduces PerCarb Broad-Spectrum Bacte…
April 26, 2017
BioSafe Systems announces PerCarb (Sodium Carbonate Peroxyhydrate), a new alternative to potassium bicarbonate and lime sulfur products for use in Read More
Deere Twitter
EquipmentTop 10 Twitter Pics for #Plant17
April 26, 2017
Despite some wet weather in parts of the Midwest, growers and ag retailers are working feverishly to plant this year’s Read More
Donald Trump
Crop InputsTrump Targets Agriculture with Latest Executive Order
April 26, 2017
(Via UPI.com) President Donald Trump on Tuesday took executive action in an effort to help grow the domestic agriculture industry Read More
AGCO Ratliff featured
EquipmentAGCO Mourns Passing of Company Founder, Industry Vision…
April 25, 2017
AGCO Corp., a worldwide manufacturer and distributor of agricultural equipment and solutions, mourns the passing of founder and former President, Read More
Engenia soybeans
Crop InputsINNVICTIS CROP CARE Introduces VANDAL MOC Soybean Herbi…
April 25, 2017
INNVICTIS CROP CARE, LLC has announced the U.S. EPA registration for VANDAL MOC, a combination of sulfentrazone plus metolachlor. VANDAL Read More
Kochia
HerbicidesINNVICTIS CROP CARE Launches STAVE Post-Emerge Broadlea…
April 25, 2017
INNVICTIS CROP CARE, LLC has introduced STAVE as the newest addition to­ its expanding portfolio. STAVE will be a great Read More
Sonny Perdue
LegislationSonny Perdue Confirmed by Senate as Next Agriculture Se…
April 25, 2017
After months without a secretary of agriculture, the Senate voted Monday evening to confirm former Georgia Gov. Sonny Perdue to Read More
BPIA logo
Seed/BiotechBPIA Files Comments with USDA
April 24, 2017
The Biological Products Industry Alliance (BPIA) has filed comments with the USDA’s Animal and Plant Health Inspection Service (APHIS) Plant Read More
Eric SfiligojHope for Application Equipment Sales
April 24, 2017
The old saying goes that a “rising tide lifts all boats.” If this is indeed the case, then things may Read More
Stewardship video screenshot
ManagementNew Video Raises Awareness of 2,4-D Stewardship
April 24, 2017
A new public service video developed and produced by the 2,4-D Research Task Force, in conjunction with the American Soybean Read More
ManagementAn Inside Look at Award Winning Ag Retailer Gar Tooteli…
April 20, 2017
CropLife Editor Eric Sfiligoj discusses An Inside Look at Award Winning Ag Retailer Gar Tootelian Read More
Students Soybean Field
Industry NewsMACA Announces 2017 Young Leader Scholarship Recipients
April 19, 2017
The Mid America CropLife Association (MACA) Board of Directors selected 11 college students to receive the MACA Young Leader Scholarship Read More
Growmark FS Outlet
SoftwareKnoa Software Solution Helps GROWMARK Boost System Perf…
April 19, 2017
Knoa Software, a leading provider of user experience management (UEM) software, has announced that GROWMARK, Inc., a regional agricultural cooperative Read More
Crop InputsFBN Publishes ‘Voice of the Farmer’ Agricul…
April 17, 2017
Farmer’s Business Network (FBN) released today its “The Voice of the Farmer”, which the company is describing as “a special Read More