By Randy Stockhorst, Loveland Products, Defiance, Ohio
For soybean plants, R3 is a critical growth stage during which the plant's nutrient needs rise to support pod growth and development. By applying Extract PBA with a soybean pre-emerge herbicide, growers can ensure their plants will have the nutrition they need at this critical growth period, which will position them for an excellent yield outcome.
In our area of northwest Ohio, potassium deficiency is the most prevalent deficiency that we've seen in R3 soybean tissue samples over the past several years. The amount of potassium stored in corn stalks is a little more than a 1-to-1 ratio on yield. That means that in a 200 bushel corn crop, for example, there are approximately 205 lbs of potassium locked in the stalks.
By applying Extract PBA on corn residue now, growers can accelerate nutrient release and mineralization so that more nutrients–including potassium–are available to their soybean crop at the reproductive stages.