Rainfall determines seeding rates for different areas of the state. Regions that receive heavy rainfall will plant more volume per acre because the extra moisture will sustain more plants. Areas that get less rainfall will have lower volume seeding rates as there is less moisture for the plants to utilize.
When multiple factors occur that call for adjusting seeding rates, continually increasing the rate for each issue will not result in the desired outcome. The maximum seeding rate that Shroyer suggests under all conditions requiring increased seeding is 120 pounds per acre.
Shroyer also believes that planting with certified seed can reduce some of the risk of seed size variety this year as certified seed will have any smaller seeds removed.
Daryl Strouts, President of the Kansas Wheat Alliance believes that seed uniformity and cleaned seed is more important than seed size. He suggests farmers look at seed test weight as it is a good indicator of quality.
"By planting a certified seed variety a producer can have confidence that seed will be more uniform as it has been cleaned and smaller seeds will not be present. If using bin-run seed it is very important that the seed has been cleaned or it can lead to a lower quality stand establishment," Strouts said.
In order to calculate the most accurate and specific rates producers can consult the Kansas Crop Planting guide available on the Kansas State University extension agronomy website. Extension agronomist Shroyer is also available as a resource for any producer in need of assistance deciding on planting rates.
Shroyer recommended several other planting techniques to use in addition to calculating proper seeding rates. Other planting advice includes; using the proper tractor speed, planting at a uniform depth, planting into a firm seedbed, planting during optimum times and ensuring adequate soil fertility.