Agronomy Blog

Plains East Crop Progress

by Leonard Luebker | Jul 10, 2017

Again, our region’s progress is as the spring dictated toward planting.  The Southeast Nebraska and Northeast Kansas areas tasseled and silked last week in the earlier planted fields.  The rest of the area, Lincoln, Nebraska and north, tasseling is beginning.  By next weekend, July 15th, one will see the majority of the fields tasseled. Some later plantings will carry into the following week. 

The past few days and looking into this week, the temperatures are to be in the mid 90’s, with a day or two possibly hitting 100 degrees.  This is taking a toll on the corn in some fields, or parts of fields. The plants are showing severely rolled leaves to protect themselves from the heat. 

Corn, early season weather effects:  With the weather effects at planting and shortly thereafter, one may see significant differences from field to field.  Some fields may show more leaf rolling than others during this heat spell due to the root development, or lack thereof.   In fields with leaf rolling, some of the root development was restricted by earlier soil compaction due to the cold wet conditions.  Overall the corn crop is looking good considering the weather to date, but the next week to 10 days are very critical.  The ten day span prior to tasseling is the period of time for the corn plant to determine the ear length.  Rolling of the leaves, and stress from extreme heat, can shorten the overall ear length affecting the yield. 

Soybeans:  The soybean height overall is following the corn growth from South to North.  Better height and canopy can be found in Southeast Nebraska and Northeast Kansas.  As one moves north, the soybeans are growing, but not every field is showing good height for canopy.  July is the month we usually see some good growth on the soybeans.  The canopy should be expected to rapidly develop.  Marestail, as was stated a month ago in the last blog, became a “nightmare” quickly in some fields.  Not only were some of the herbicide applications affected by the cooler conditions, but new seedlings started in June adding to the problem that already existed.  The best results of using a pre-plant or pre-emerge on soybeans this year, appeared to be applications made with good growing conditions the following 3 days after the herbicide was applied.  This allowed the actively growing weed plants, and seedlings, to uptake the herbicides for better control. 

LG5643 is the hybrid really standing out in a lot of areas.  It showed early vigorous growth with a taller plant height than other hybrids in plots and fields.  LG5650 and LG5663 are looking good at this point along with the LG5643.  As we progress through the rest of the summer, be sure to ask your LG Seeds DSM for their latest take on the hybrids looking the best in your area.


Note: The information in this issue is based upon field observations and third party information. Since variations in local conditions may affect the information and suggestions contained in this issue, LG Seeds disclaims legal responsibility therefore. Always read and follow label instructions.
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