Agri News, MN
11-20-07
New varieties will be available in spring
Pioneer Hi-Bred
Soybean growers now have more options when selecting soybean varieties that
have high yield potential and the ability to stave off soybean cyst nematode, or
SCN.
"SCN cannot be eradicated from a field, even when soybeans are removed from
the rotation," said Jeff Thompson, research scientist for Pioneer in Mascoutah, Ill.
"This means the goals for soybean growers are to maintain soybean yield,
reduce SCN numbers and preserve the effectiveness of resistance soybean
varieties."
Agronomists and university experts recommend planting sobyeans with different
sources of SCN resistance.
"For many years, PI 88788 has been the main source of resistance used to
control SCN, but by using this source as a primary control, there have been
cases where nematode control has not been as effective," said Greg Tylka, Iowa
State University plant pathologist, specializing in SCN, biology and
management research.
"...reports that PI 88788 resistance being overcome and signs that SCN
continues to spread north have certainly encouraged the development and
expansion of SCN-resistant varieties."
The Peking source has not been widely deployed in the Midwest. However,
Pioneer researchers have intergrated Peking SCN resistance into a number of
high-performance soybean varieties.
"In addition to the source of resistance, the genetic background also plays a role
in a variety's ability to control SCN," said Thompson. "Rotating resistant varieties
is often a good strategy for controlling an SCN population."
"Growers can experience SCN damage and not realize it -- making SCN an
extemely difficult challenge to manage," said Tylka. "...Growers need to know
that besides waging a costly battle on its own, SCN also can intensify other yieldreducing diseases for soybeans."
"Research shows SCN can worsen soilborne, fungal diseases such as sudden
death syndrome and brown stem rot."
To help growers address the challenge of SCN, Pioneer is expanding its lineup of
soybean varieties with multi-sources of SCN resistance to include products
across a wide geographic area in 2008, including nothern and central areas of
the Corn Belt.
The following are new Pioneer brand soybean varieties with SCN resistance:
• 90M80: a Group 0 variety with the Roundup Ready, or RR, gene plus the
Peking source for resistance against SCN.
• 91M80 (RR): A new Group I variety offering solid sudden death syndrome
tolerance in northern areas.
• 92M11 and 92M21: For early Group II, both have the RR gene and the Peking
source for SCN. These will be offered in Iowa and Minnesota in 2008.
• 93M61(RR): In mid-Group III, a new product for SCN resistance in more central
Corn Belt areas.
Contact your local Pioneer sales professional for more information.
Dairyland Seed Co., Inc.
Dairyland Seed recently announced the release of 10 new soybean varieties for
the 2008 planting season.
• 00.9 DSR-C750/RR: Round-up Ready medium bush plant, strong iron chlorosis
and phytophthora tolerance.
• 0.3 DSR-0303/RR: Round-up Ready and brown stem rot resistance;
phytophthora tolerance and iron chlorosis resistance. Medium-bush plant
canopy.
• 1.6 SCN DSR-1601/RR: Round-up Ready soybean with cyst nematode field
resistance. Brown stem rot and phytophthora resistance. Medium-brush plant.
• 1.9 SCN DSR-1850/RRSTS: Stacked with Round-up Ready and STS herbicide
resistance. Cyst nematode field resistance.
• 2.8 SCN DSR-2770/RR: Features cyst nematode field resistance, medium
bush, Round-up Ready.
• 3.3 SCN DSR-3320/RRSTS: Versatility across soil types. Stacked with Roundup Ready and STS herbicide resistance. Moderate cyst nematode resistance and
phytophthora tolerance.
• 3.5 SCN DSR-3535/RR: New Round-up Ready soybean with wide adaptability
across soil types. Moderate cyst nematode resistance to Race 3 and
phytophthora protection.
• 3.6 SCN DSR-3675/RR: Round-up Ready soybean with strong Race 3 SCN
resistance. Strong SDS protection as well as genetic protection to white mold.
• 3.6 SCN DSR-3590: Convetional soybean with field resistance to cyst
nematode. White mold and phytophthora tolerance.
• 4.3 SCN DSR-4300/RR: Full canopied, Round-up Ready soybean. Moderate
resistance to cyst nematode Race 3. Soil type versatility.
Kruger Seeds:
Kruger Seeds, Inc., recently launchd a new online home at
www.krugerseed.com. This resource helps growers find the right seed for their
acres.