CROPS NEWS
Dr. Dan Talks Agronomy
Dan Davidson DTN Contributing Agronomist
Fri Mar 28, 2014 06:39 PM CDT

Adjuvants are too often an afterthought. The products we use -- surfactants, oils, fertilizers, stickers, drift retardants -- haven't changed much over the years, but there are new things to consider each year with the introduction of new herbicides and new weed-control issues.

I asked Richard Zollinger, weed scientist at North Dakota State University, to give me the latest on the topic. He explained that adjuvants, which enhance the efficacy of other products, have different modes of action. "Some adjuvants, like NIS (nonionic surfactants), are for product retention; NIS and oils (crop oil concentrate (COC) and methylated seed oil (MSO)) ...

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