Navigation Links
More than drought affecting wheat yields

Wheat producers have more than the drought cutting into their yields this year, said two Texas Agricultural Experiment Station researchers.

Dr. Tom Allen, Experiment Station assistant research scientist and plant disease diagnostician, saw more than 150 wheat samples sent to the Great Plains Diagnostic Network lab this growing season, in addition to 400-plus samples the plant pathology staff gathered across the Panhandle.

Ninety-five percent of these samples were diagnosed with the wheat streak mosaic virus. In addition, 50 percent of the samples contained maize red stripe virus, more commonly known as High Plains virus. Both diseases are vectored by the wheat curl mite, Allen said. And so far, there's no treatment for either the viruses or the mite.

The Great Plains Diagnostic Network is a part of a national plant disease monitoring system, which is divided into five regions. The Amarillo facility, a satellite lab to one at Kansas State University, is operated under the Experiment Station's plant pathology program, headed by Dr. Charlie Rush.

Samples came by mail, through Texas Cooperative Extension agents or were dropped off by producers, Allen said.

They came from as far north as Nebraska and as far south as Dallas and the Hill Country, Rush said, making this one of the most widespread years for wheat streak mosaic damage.

"Without question, wheat streak mosaic virus is the No. 1 pathogen of wheat year in and year out," he said.

An early indication this wheat crop would have more problems than normal was the arrival of samples in the middle of October, Allen said,"which is pretty rare to see virus that early. "We've had quadruple the number of samples as any previous year," he said.

Once a crop is diagnosed with one of the viruses, there is little the producer can do, Allen said. Widespread cases can reduce yields enough that only grazing or making silage from the crop can salvage any income. In man y cases, the crop is "zeroed out" by insurance companies and plowed up.

This year's virus started early because of last year's crop, he said.

A hail storm across much of the region shortly before harvest knocked the grain from the heads, Allen said. These seeds germinated into a heavy volunteer wheat crop, which went uncontrolled through the summer.

The wheat curl mite over-summered on this "green bridge" and moved into the new crop.

Control of volunteer wheat this summer will be key to controlling the wheat curl mite that vectors the disease, Allen said.

Rush and Allen believe the Conservation Reserve Program grasses throughout the region also might harbor the wheat curl mite.

"We don't have a good understanding of the wheat curl mite and its ecology," Rush said. "It holds on some grasses, but there's lots of work to be done to understand what happens with these mites during the summer."

Right now, he said, the only other advice they can give to producers is to plant as late as possible to reduce chances of severe wheat streak problems again.

"We're trying to develop some cultivars that can be resistant to wheat streak mosaic and could be planted early and then grazed out," Rush said."They would be popular in this region and serve an important purpose."

The problem now, he said, is any resistance breaks down in high temperatures. And not enough is known about the wheat curl mite to tellproducers when or what to spray.

"There are big gaps in our knowledge," Rush said. "But we are making progress and have things working in the field that should provide answers in the next couple of years."


Source:Texas A&M University - Agricultural Communications

Related biology news :

1. No relief for Pacific Northwest drought
2. Six million Africans face famine because of locusts, drought
3. Genetic discovery could lead to drought-resistant plants
4. Past droughts geographically widespread in the West, according to tree-ring data
5. Anyway you slice it, tomatoes cut through drought with new gene
6. Tropical Atlantic cooling and African deforestation correlate to drought, report scientists
7. Blood flow in brain takes a twist, affecting views of Alzheimers
8. Genes affecting blood pressure change as children become adults
9. CHAVI announces international search for genes affecting HIV response
10. Creating new life forms that may help eradicate cancer affecting women
11. Are rice and wheat behind Chinas population boom?
Post Your Comments:

(Date:5/20/2016)... -- VoiceIt is excited to announce its new marketing ... working together, VoiceIt and VoicePass will offer an ... slightly different approaches to voice biometrics, collaboration between ... Both companies ... "This marketing and technology partnership allows VoiceIt ...
(Date:4/28/2016)... BANGALORE, India , April 28, 2016 ... of Infosys (NYSE: INFY ), and Samsung SDS, ... partnership that will provide end customers with a more ... payment services.      (Logo: ) ... financial services, but it also plays a fundamental part in ...
(Date:4/15/2016)...  A new partnership announced today will help ... in a fraction of the time it takes ... life insurance policies to consumers without requiring inconvenient ... Diagnostics, rapid testing (A1C, Cotinine and HIV) and ... weight, pulse, BMI, and activity data) available at ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... Rolf K. Hoffmann, former senior ... the University of North Carolina Kenan-Flagler Business School effective June 27. ... Kenan-Flagler, with a focus on the school’s international efforts, leading classes and participating ...
(Date:6/27/2016)... BOSTON , June 27, 2016   Ginkgo ... biology to industrial engineering, was today awarded as ... a selection of the world,s most innovative companies. ... at scale for the real world in the ... organism engineers work directly with customers including Fortune ...
(Date:6/24/2016)... SAN DIEGO , June 24, 2016 /PRNewswire/ ... that more sensitively detects cancers susceptible to PARP ... individual circulating tumor cells (CTCs). The new test ... of HRD-targeted therapeutics in multiple cancer types. ... therapies targeting DNA damage response pathways, including PARP, ...
(Date:6/24/2016)... ... ... Researchers at the Universita Politecnica delle Marche in Ancona combed medical journal articles ... findings are the subject of a new article on the Surviving Mesothelioma website. ... blood, lung fluid or tissue of mesothelioma patients that can help point doctors to ...
Breaking Biology Technology: