Parsons, Kansas —
Controlling herbicide resistant weeds was the hot topic during the Andrew County Ag. Update conference on Thursday, Jan. 17 in the Clasbey Center in Savannah, Mo.
Northwest Regional Agronomist Wayne Flanary went over the latest spray products available for growers to handle water hemp, Palmer Amaranth and the whole family of Roundup resistant pigweeds.
“These weeds are becoming resistant to products with three of the more popular modes of action now,” said Flanary. “We are starting to recommend pre-emergent products to change the modes of action even further, and stop the weed before it gets a start.”
The newest product to be labeled for this type of use is Zidua, marketed by the BASF Company.
“There are other companies that will have this same chemical,” Flanary said. “The trade names are Fierce and Anthem. They just don’t have their EPA label approved yet.”
The active ingredient in the new products is pyroxasulfone. It has a root and shoot inhibitor type of mode of action. Different from other root and shoot inhibitors, the chemical attacks fatty acid synthesis in the weed.
“This product works similar to Lasso,” Flanary said. “It is especially effective on small seeded broadleaf weeds like the pigweed family.”
Zidua is currently labeled for corn. Fierce and Anthem are awaiting their label approval. When that happens, they can also be used in soybeans and as a pre-plant product for wheat.
“This is good news for growers wanting to rotate to wheat,” Flanary said. “Carryover is a bigger problem now with the drought.”
Flanary went over adjuvants briefly.
“Glyphosate (Round-Up) doesn’t need crop oil to be effective,” he said. “Just use ammonium sulfate and you will improve the uptake all you need to.”
Increasing the amount of water for post-emergent spray will help, as area growers confirmed.
“We used 18 gallons of water on some of our soybeans,” said Travis Smock. “We compared it to a spot with only 10 gallons of water and you could tell the difference in emerged weed control.”
Scouting for insect damage was something the agronomist stressed.
“Podworms, cucumber beetles and stink bugs can sneak up on you,” Flanary said. “If you see damage on the leaves, they have already worked over the pods.”
Over 20 growers completed the Private Pesticide Applicator process. The nominal fee was $12 and the class was completed in two hours.
For more information on the latest in weed control, growers can go online to http://weedscience.missouri.edu
Agronomist Wayne Flanary can be contacted at flanaryw@missouri.edu or by phone at 660-446-3724. £
Crops
Related Photos
-
Northwest Regional Agronomist Wayne Flanary talks about new herbicides during the Andrew County Ag. Update on Thursday, Jan. 17 in the Clasbey Center. Looking on are local father and son growers Bob and Travis Smock. Photo by Kenny Ragland
Local growers get latest on new herbicides
- Crops
-
-
Plant now, add nitrogen later
When the rain faucet shuts off, plant first and apply nitrogen later, advises Peter Scharf, University of Missouri Extension agronomy specialist and professor in plant sciences at the MU College of Agriculture, Food and Natural Resources.
-
MU Field Scouting Report: No freeze damage to wheat, delayed corn planting
Wheat is in the flag leaf to early boot stage. No freeze damage to the wheat head was seen. Temporary phosphorus deficiency, identified by purpling on leaf tips, was seen due to cold weather.
-
Corn planting dates and cold temps cause concern
“The possibility of temperatures nearing 32 degrees or below, there is concern among producers for damage of the wheat head,” said Jill Scheidt, agronomy specialist with the University of Missouri Extension in Barton County. According to Bill Wiebold, state specialist with the University of Missouri Extension, wheat is the most sensitive to freezing temperatures when the heads are coming out and flowers are beginning to form.
-
Wildcat Extension Report: Can gypsum fix what ails your soil?
A man much wiser than me once said that the easiest way to change your soil is to move. Unfortunately, this is not always an option for most producers. Soils in southeast Kansas are classified, in general, to be heavy clay soils.
-
Kansas wheat growers should be aware of crop diseases
With forecasts of snow still a possibility and the wheat just starting to green up in parts of Kansas, it may surprise some wheat growers to know that March is an important month for wheat disease development.
-
Cover crops can provide many benefits
Having plant growth in fields year-round can improve the soil, according to Tim Reinbott, superintendent of the University of Missouri Bradford Research Center. He says using cover crops in the fall and spring can provide large benefits.
-
Drought impacts U.S. soybean quality results
According to a recent soy-checkoff-funded study, the overall oil levels in last year’s U.S. soybean crop increased over the previous year, while average protein fell. United Soybean Board (USB) Customer Focus Action Team Chair Sharon Covert says U.S. soy’s biggest users pay attention to those results.
-
Midwest soil could take up to two years to recover
The Midwest suffered the worst drought in years last summer, and Midwest soil has been suffering from a drought since early 2010. As a result, crops have wilted and farmers have fallen on hard times. Now, a University of Missouri researcher says that it may take at least two years for crops and soil to recover.
-
Ag profitability conference addresses crop concerns
Corn and soybean producers face wide-ranging harvest price possibilities for the crops they plant this spring.
-
Local growers get latest on new herbicides
Controlling herbicide resistant weeds was the hot topic during the Andrew County Ag. Update conference on Thursday, Jan. 17 in the Clasbey Center in Savannah, Mo.
- More Crops Headlines
-
Plant now, add nitrogen later
