Agronomy eUpdate September 4th, 2025

Issue 1070

Too cool too soon? Finishing up grain sorghum before the first freeze

Cooler-than-average weather may have slowed sorghum development in parts of Kansas. This article explains how growing degree unit accumulation impacts crop progress, and what it means for sorghum maturity and freeze risk this fall.

grain sorghum crop development growing degree days first freeze 

Wheat planting: Be cautious of planting too early

Wheat planting dates matter. Planting too early can increase the risk of insects, diseases, emergence problems, and excessive fall growth, while planting too late may limit yield potential. This article outlines the best planting windows across Kansas and management tips.

wheat optimum planting dates wheat planting early-planted wheat 

Herbicides for cool-season hayfields and pastures damaged by fall armyworms

Fall armyworms damaged many cool-season forage fields this summer, leaving bare spots and opportunities for weeds. In this article, K-State specialists outline weed management practices and herbicide restrictions to help pastures recover.

weed control tall fescue fall armyworms smooth brome 

Annual weedy brome control in hayfields and pastures

Fall is the right time to target annual bromes like cheatgrass, Japanese brome, and cheat in pastures and hayfields. This article covers how to identify these species, why they reduce forage value as they mature, and herbicide and management options for control.

pastures weed control hayfields downy brome 

Meet the new K-State Range Management Extension Specialist

Kansas native Dr. Molly Reichenborn has returned home to join K-State Agronomy as the new Range Management Extension Specialist. Her career has focused on tallgrass prairie recovery, invasive species control, and woody encroachment in arid rangelands.

new faculty 

TAPS Twilight Tour delivers insights and action - Sept. 8 in Colby

The 2025 TAPS Twilight Tour is set for Sept. 8 in Colby. Tour corn and forage sorghum trials, see how seeding rates and irrigation strategies affect yield, and enjoy an evening of marketing insight, games, and a community meal.

Field Day TAPS 

K-State Hosts Limited Irrigation Field Day - Sept. 10

Mark your calendars for the Limited Irrigation Field Day on Sept. 10 near Scott City. Hosted by K-State Research and Extension, the event starts at 4:30 p.m. CT and features irrigation strategies, hybrid demonstrations, and management insights, followed by supper at the fairgrounds.

Field Day