Target Spot is not a new disease but has become more of an issue in the past few years, especially in the southern regions of our marketing area. Historically, it has not been a yield-robbing disease because it typically remains in the lower canopy of a soybean plant, and those leaves do not contribute to overall yield. In 2014, pathologists began seeing more severe infections, and by 2016 it was considered a disease with significant yield impact in susceptible varieties.
Categories: CropTalk, 2020
Tags: CropTalk, soybeans, target spot
What does 13 lb. of diammonium phosphate (DAP) and 27 lb. of potash mean to your operation? Out of context it probably doesn’t mean much, but what if you added it up on ever acre of corn you grow? To illustrate, on 1,000 acres of corn, that’s 6.5 tons of DAP and 13.5 tons of potash. At the time this article was written, DAP was $491/ton and potash was $387/ton. So, to answer my own question, 13 lb. of DAP and 27 lb. of potash across 1,000 acres equals $8,416.00.
Categories: CropTalk, 2019
With the new herbicide-tolerant traits on the market today and the many to come in the near future, this is a good opportunity to discuss some common herbicide injury symptomology that is documented every year.
Tags: CropTalk, soybeans, herbicides, Dicamba, 2019, auxins, 2, 4-D
Let's begin by addressing the term “pigweed.” Typically, when referring to pigweed, the first thing you need to consider is your location. If you are in Central Illinois, then most likely you are referring to waterhemp. If you are in West Tennessee, then pigweed most likely means Palmer amaranth (Palmer). Pigweed is a general term that can be used to describe most amaranthus species. Palmer amaranth is Amaranthus palmeri and tall waterhemp is Amaranthus tuberculatus (=A. rudis). You can see the confusion. In 2016, The Weed Science Society of America ranked waterhemp and Palmer in the top three most troublesome weeds for corn and soybean production; however, for the purpose of this article, “pigweed” will be considered Palmer.