Planned programs are the only way to control this weed – there is no longer an easy button! Waterhemp isnt your average weed and has 1.5 times more seeds than other pigweed varieties and can grow one to two inches per day. Consider developing a program with your agronomist that is specific to your farm so you are prepared for when you first see the weed.
Waterhemp has been around for a number of years, coming in our area from the west, but unfortunately it’s not on growers’ radar until it’s on their farm for three or so years. Scout early and often, the key to controlling waterhemp is to make applications while it is still small. Waterhemp begins to grow as soon as the soil warms and the sun is out.
A combination of residuals (they stay in the soil) and post-emergence application are key. But don’t get too comfy after treating it once, waterhemp grows in flushes and it may take more than one application to control it.
Click below to watch Agronomist Steve Dlugosz and YieldPro Specialist Mark Richey talk about waterhemp and what farmers can do to prevent the weed.