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Desiccation
9/1/2009
Getting the sunflower crop harvested as soon as possible can pay dividends in higher yields by minimizing late season losses such as bird, wind and other weather damage. Or for producers who want to plant winter wheat. One of the tools for early harvest is desiccating with an approved chemical. There are three labeled products: Gromoxone (Paraquat), Drexel Defol (Sodium Chlorate) and Roundup (Glyphosate). The registration of a fourth product called Kixor (Safluenacil) is expected soon.
A critical decision is when to desiccate. The labels say seed moisture of 35 percent or less. Moisture testers generally do not test accurately at that level. Physical signs to look for include browning of the bracts. For more information, read an insightful article from The Sunflower. Another resource is the Desiccant page where photos and a video are available.
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