Tuesday, September 26, 2017  
 
AgBizDir.com |  Charts |  Options |  Portfolio |  Weather 
 Home
 Headline News and Commentary
 Weather Station
 Futures & Cash Prices
 Local Cash Grain Bids
 Admin Login
 
- DTN Headline News
Crop Tech Corner
Tuesday, September 26, 2017 7:38AM CDT
By Emily Unglesbee
DTN Staff Reporter

ROCKVILLE, Md. (DTN) -- This bi-monthly column condenses the latest news in the field of crop technology, research and products.

CHEMICAL ROTATION ALONE CAN'T KEEP RESISTANCE AT BAY

Rotating herbicides to avoid weed resistance is not a magic bullet against resistance development, according to a new study from the University of Illinois. In the past, researchers have assumed that many of the random genetic mutations that help weeds survive a herbicide application come with a "fitness cost," meaning the mutated weeds are not as strong and productive as the susceptible weeds. From a painstaking study done with waterhemp plants, Illinois crop scientist Pat Tranel and his team discovered this was not the case. Over six generations, the waterhemp plants in their test population with herbicide resistance survived and reproduced at the same rate as susceptible waterhemp plants.

This is tough news for any farmers who believe all they need to do to avoid weed resistance is spray an alternate herbicide mode of action every other year. Because no herbicide kills 100% of a weed population, there is a good chance that resistant genes to a certain herbicide will still be in the field even after a year or multiple years of using a different chemical, the Illinois researchers concluded.

"This study tells us that fitness cost isn't going to help you much in terms of herbicide resistance, so even long rotations aren't going to work," Tranel said in a university press release. "I tell farmers, 'Once you have resistance, you're stuck with it.' It gives us that much more incentive to do the right things to avoid resistance in the first place." That means using multiple herbicide modes of action during single applications, following pre-emergence applications with post-emergence ones and even hand weeding any escapes if necessary, the researchers said.

See the press release here: http://bit.ly/… and the study abstract here: http://bit.ly/….

A NEW TOOL FOR STEM ROT

A public-private research partnership has yielded big dividends for soybean growers. Scientists from Dow AgroSciences and Purdue University teamed up to search for genetic resistance to soybean stem and root rot, which is caused by a fungus called Phytophthora sojae. The rotting diseases caused by Phytophthora fungi are some of the most economically damaging soybean diseases in the U.S. each year. The Dow and Purdue scientists pinpointed a gene called Rps11 that protects plants against a variety of types of this fungus. In a university press release, Dow asserts that it can use molecular markers to breed the gene into high-yielding elite soybean germplasm and make them widely available to farmers "rapidly." Purdue agronomist Jianxin Ma added that they will continue to search for additional resistance genes that could someday be stacked with Rps11 for even better resistance and longevity.

You can read more about the discovery in the Purdue press release here: http://bit.ly/….

SUGARCANE SOARING HIGH

Move over corn and soybeans -- there's a new biofuel source in town. Scientists from the University of Illinois have produced a promising economic analysis of genetically engineered (GE) sugarcane that produces an oil called lipidcane, which can be converted into biodiesel or jet fuel. The sugarcane is the result of an Illinois project called Plants Engineered to Replace Oil in Sugarcane and Sweet Sorghum (PETROSS), initiated and funded by a Department of Energy branch called the Advanced Research Projects Agency - Energy (ARPA-E).

The more lipidcane a sugarcane plant produces, the better. The theoretical limit (and researchers' goal) is 20%. In their study, the Illinois researchers concluded that these new sugarcane plants promise to be remarkably efficient at producing biofuel. They estimate that a sugarcane plant with 20% lipidcane can produce "more than 15 times more jet fuel (6,307 liters, or 1,666 gallons) per hectare than soybeans," according to a university press release. Even a sugarcane plant with only 5% lipidcane content could still produce four times more jet fuel than soybeans.

PETROSS researchers are also working to make the GE sugarcane more cold-tolerant, with the goal of growing it on marginal lands in the Southeast U.S. not suited to other row crops. The director of PETROSS, University of Illinois crop scientist Stephen Long, estimates that if this new sugarcane were grown on 23 million available marginal acres in the Southeast, the resulting fuel could account for 65% of the nation's jet fuel consumption.

Read more about the researchers' work from the university press release here: http://bit.ly/… and the study here: http://bit.ly/…. Read more about the PETROSS effort to make oil-producing sugarcane here: http://bit.ly/….

Emily Unglesbee can be reached at emily.unglesbee@dtn.com

Follow Emily Unglesbee on Twitter @Emily_Unglesbee

(PS/AG)


blog iconDTN Blogs & Forums
DTN Market Matters Blog
Editorial Staff
Monday, September 25, 2017 1:09PM CDT
Friday, September 22, 2017 1:36PM CDT
Monday, September 18, 2017 1:14PM CDT
Technically Speaking
Darin Newsom
DTN Senior Analyst
Monday, September 25, 2017 8:08AM CDT
Monday, September 25, 2017 8:06AM CDT
Monday, September 25, 2017 8:05AM CDT
Fundamentally Speaking
Joel Karlin
DTN Contributing Analyst
Tuesday, September 26, 2017 10:52AM CDT
Wednesday, September 20, 2017 11:10AM CDT
Thursday, September 14, 2017 10:48AM CDT
DTN Ag Policy Blog
Chris Clayton
DTN Ag Policy Editor
Tuesday, September 26, 2017 7:20AM CDT
Wednesday, September 20, 2017 2:03PM CDT
Tuesday, September 19, 2017 10:07AM CDT
Minding Ag's Business
Marcia Taylor
DTN Executive Editor
Thursday, September 21, 2017 11:43AM CDT
Wednesday, August 30, 2017 12:32PM CDT
Friday, August 25, 2017 8:37PM CDT
DTN Ag Weather Forum
Bryce Anderson
DTN Ag Meteorologist and DTN Analyst
Tuesday, September 19, 2017 4:38PM CDT
Thursday, September 14, 2017 1:44PM CDT
Friday, September 8, 2017 2:15PM CDT
Monday, September 25, 2017 1:12PM CDT
Friday, September 22, 2017 2:23PM CDT
Thursday, September 21, 2017 3:24PM CDT
DTN Production Blog
Pam Smith
Crops Technology Editor
Monday, September 18, 2017 6:14PM CDT
Friday, September 8, 2017 7:52PM CDT
Friday, September 1, 2017 2:58PM CDT
Harrington's Sort & Cull
John Harrington
DTN Livestock Analyst
Friday, September 22, 2017 3:23PM CDT
Friday, September 1, 2017 3:27PM CDT
Friday, August 18, 2017 2:30PM CDT
South America Calling
Alastair Stewart
South America Correspondent
Thursday, August 24, 2017 11:32AM CDT
Wednesday, August 23, 2017 2:50PM CDT
Thursday, August 17, 2017 3:02PM CDT
An Urban’s Rural View
Urban Lehner
Editor Emeritus
Tuesday, September 26, 2017 10:25AM CDT
Tuesday, September 19, 2017 6:53AM CDT
Monday, September 11, 2017 5:48PM CDT
Machinery Chatter
Jim Patrico
Progressive Farmer Senior Editor
Monday, September 18, 2017 1:51PM CDT
Friday, September 15, 2017 9:35AM CDT
Tuesday, September 5, 2017 2:37PM CDT
Canadian Markets
Cliff Jamieson
Canadian Grains Analyst
Monday, September 25, 2017 4:27PM CDT
Friday, September 22, 2017 11:04AM CDT
Wednesday, September 20, 2017 5:07PM CDT
Editor’s Notebook
Greg D. Horstmeier
DTN Editor-in-Chief
Tuesday, September 26, 2017 8:30AM CDT
Tuesday, August 29, 2017 4:45PM CDT
Friday, August 18, 2017 11:33AM CDT
 
Copyright DTN. All rights reserved. Disclaimer.
Powered By DTN