Search

Frost Damage to Soybeans

October 17, 2019 1:41 PM
Blog Post

Temperatures fell into the low 30’s and upper 20’s in most of Iowa over the weekend of October 11-13.  Because of the very late planting season, some crops were immature enough to be injured by the freezing temperatures. This ICM Blog will address frost damage concerns to soybeans.  

Frost normally forms early in the morning, driven by radiation cooling especially on clear cold nights.  The visual impact of the frost damage is most evident the next day (Figure 1).

Category: 
Crop Production
Grain Handling and Storage
Tags: 
Soybean
frost
fall frost
frost damage
grain quality
grain grading
grain handling

Harvest consideration for frost killed corn

October 7, 2019 3:25 PM
Blog Post

A portion of Iowa’s corn crop is likely to experience a frost before naturally reaching maturity as a result of cool temperatures later this week. Natural maturity is often determined when a black layer is formed at the kernel tip. At this timeframe grain moisture is typically 28–35% moisture. If a frost or freeze occurs a black layer can still form, however, grain moisture will be greater than 35%. A light frost of greater than 28oF for only a couple hours may kill some leaves, especially in the upper canopy.

Category: 
Crop Production
Grain Handling and Storage
Tags: 
fall frost
frost damage to corn
grain dry down