Before your corn grows too high (ie; past the “knee high” stage), you can determine exactly how much nitrogen your corn needs from this point on to the end of the season. The Pre-Sidedress Nitrate Test (PSNT) is used to give you an indication of whether or not to apply nitrogen at knee-high stage. TerraLink offers many different lab test packages. Samples should be taken when the corn is 8 – 10” in height. The results give you rapid accurate information about the nitrate status of your corn land so you can make economic decisions – to sidedress or not and how much?
Plan ahead if you need your rep to take samples. Or, bring your own soil samples in to the office in Abbotsford for processing.