The timing of the ending R stages in soybean is governed by planting date (PD) and varietal maturity group (MG), though the date of R7 can be hastened if water stress and high temperatures prevail in August — something we are seeing in portions of Nebraska this year.
University of Nebraska irrigation scheduling recommendations encourage irrigators to allow crops to continue using more of the stored soil water starting in August and continuing into September when the crop matures.
Across Nebraska, our crops continue to mature as we rapidly move towards harvest 2020, however, when scouting you may start to see more ears that have prematurely drooped. What is causing this phenomenon in our corn? And what does this mean for yield in those fields affected?
Usually by mid to late August, corn and soybeans have progressed enough in maturity that we have a good handle on how much water it will take to finish the crop out. So just how much water do we need to finish out the growing season?