With small grain harvest underway, there are some questions about preplant weed control with double cropped soybeans. This has always been a challenging situation, and with the presence of herbicide-resistant weeds, it has become even more complicated and results are often less than satisfactory. Larger plants that have been cut off or damaged by the combine are going to be less susceptible to herbicides and achieving 100% control will require a lot of environmental factors falling in your favor — the recent dry spell does not work in your favor. [Read more…]
Commercial Ag Updates + Farm Food Safety
Rutgers Cooperative Extension Ag Agents provide updates on what they see in the field, upcoming events, and other important news that affects your operation, such as developments in on-farm Food Safety. Subscribe if you wish to be notified about workshops, meetings, and upcoming commercial ag events.
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Farmland Leasing Networking for Landowners and Farmers
Interested in farmland leasing? You’re invited to attend a free farmland leasing networking event for landowners and farmers.
The meeting will be hosted July 24, 2014 from 6 PM to 7:30 PM at Rutgers Cooperative Extension of Burlington County Office, 2 Academy Drive, Westhampton NJ 08060.
To sign up for this farmland leasing networking, contact the SADC at (609) 984-2504 or email Hillary Barile at hillary.barile@ag.state.nj.us.
Weekly Crop Update: Soybean, Winter Wheat, & Barley
- Postemergence Management of Glyphosate-Resistant Horseweed in Soybeans
- Palmer Amaranth Control in Soybeans
- Harvest Aids for Small Grain
Postemergence Management of Glyphosate-Resistant Horseweed in Soybeans
Options for controlling horseweed (marestail) resistant to glyphosate after the soybeans have emerged are very limited. Liberty Link soybeans are an exception, because Liberty 280 is fairly effective on horseweed (be sure to keep your rates up and keep spray volume up to ensure good coverage). [Read more…]
Thoughts on Postemergence Herbicide Applications
The early-planted corn fields should have been sprayed postemergence for later emerging weeds. In later planted fields, morningglories can be a challenge. Glyphosate is quite effective on small morningglories, but when they start to “run” or develop the vining growth habit, glyphosate is not as effective. If morningglories are an issue for your field, you should consider an additional 1.25 to 1.5 lbs of atrazine with your postemergence sprays in order to provide good residual control. However, this requires that applications be made before the corn is 12 inches tall. [Read more…]
Not All “Buggy-Whipping” in Corn is Due to Herbicides
Buggy-whipping in corn is a common sight early in the growing season and later under certain environmental conditions. The cause of buggy whipping is the abnormal formation of waxy leaf layers causing leaves to unfurl improperly. Agrichemicals and environment can cause this. [Read more…]
Tankmixing Reflex (fomesafen) with Glyphosate
There have been many situations where both fomesafen (active ingredient in Reflex) and glyphosate will complement each other for weed control. Syngenta has a premix of fomesafen plus glyphosate called Flexstar GT. Also, Reflex and glyphosate can be tankmixed, but there have been some situations of these two products not mixing well. The following is an article from Ken Smith from University of Arkansas entitled “Problem Solving Incompatible Tankmixes of Glyphosate and Reflex®”
Some growers have experienced cottage cheese spray mixtures when Reflex® and glyphosate were tankmixed in an effort to burn down existing weeds while applying Reflex® prior to cotton or soybean planting.
It seems that the potassium salts of glyphosate (WeatherMax, Touchdown, PowerMax etc.) are not very compatible with Reflex® . . . . Many of the generic glyphosate formulations are isopropyl or diammonium salts (not potassium salts) and will mix fine. A quick check of the label will give the salt used in the formulation.
If a mistake is made and Reflex® and the potassium salt of glyphosate is mixed and found to be incompatible, it can likely be brought back into solution by adding household ammonia. Start with 1% ammonia and begin agitation. More ammonia may be added if needed.