While corn maturity and harvest are still some time away, it is never too early to be aware of potential challenges to crop growth and development and harvest.
Are you at risk of leaving some ears
behind? As ears fill out and eventually begin to mature and dry down, corn
plants become very top-heavy. Stalk rots increase the chance that plants will
fall over (lodge) due to a combination of gravity and weather. In addition to
being not-so-fun to harvest, lodged plants can significantly decrease
harvestable yield by literally leaving some ears on the ground.
Stress conditions favor stalk rots. The combination of
mid-season environmental conditions that favor kernel-set followed by
conditions that stress plants increases the risk of stalk rot. This year,
weather conditions in much of Northwestern Minnesota were relatively mild
during silking and pollen shed, favoring good kernel set. However, since then
much of the crop has experienced abnormally dry or even moderate drought
conditions during grain-fill (Fenimore, 2017).
Monday, August 28, 2017
Tuesday, August 22, 2017
Jodi DeJong-Hughes, Extension educator
Plan to attend this year’s
|Wheat stem sawfly adult female |
(P. Beauzay, NDSU)
The inspected fields had infestations on the field margins ranging from a low of 0 to a high of 15 WSS/row foot. Every field inspected had fewer infested stems as sampling moved further into the field. Edge effects are pretty strong with this insect as they overwinter in stubble and migrate to nearby wheat the next year.
Tuesday, August 15, 2017
By Jared Goplen, Tom Peters, and Dave Nicolai