Monday, August 28, 2017

Stressed out corn?: Crop might be at risk for stalk rots and lodging

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).

Tuesday, August 22, 2017

Soybean Plot Tours in NW Minnesota | August 29 - 31, 2017

Soybean Plot Tours

NW Minnesota 

August 29 - 31, 2017

Plan to attend the Strip-till Expo on September 6, 2017

Jodi DeJong-Hughes, Extension educator

Plan to attend this year’s

Strip-Till Expo 
Wednesday, September 6th

Location:   west of Fergus Falls, MN
at the University of Minnesota - North Dakota State University Tillage Research Trials 
(see directions below)

Registration begins at 8:30 a.m. and the program will run from 9:00 a.m. to 2:30 p.m.

Update: Wheat Stem Sawfly infestation levels found in Polk County

Wheat stem sawfly adult female
(P. Beauzay, NDSU)
Wheat stem sawfly (WSS) are being found at significant levels in Polk County. Field surveys were conducted from August 14 to 18, 2017 to learn more about the levels of infestation and the possible size of the area impacted. 

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

Target weeds after small grain harvest

By Jared Goplen, Tom Peters, and Dave Nicolai

Waterhemp in a wheat stubble field in Ottertail Co., 
Minnesota. Photo: Dave Nicolai
One of the many benefits of including small grains in crop rotations is improved broadleaf weed control and breaking up weed lifecycles. Although freshly harvested small grain fields have a clean look, they often have weeds hiding in the stubble. The most prominent weeds in stubble fields are often late-emerging weeds like waterhemp and other pigweed species that emerged after early season herbicide applications were made. Control escaped weeds now to prevent seed production and weed seed bank replenishment.