Scouting wheat in November

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

Jim Shroyer, K-State Research and ExtensionPhoto 1. Wheat plant with only one, very short crown root on November 14, 2012 at the Agronomy North Farm near Manhattan. The crown root system should be much more fully developed by this point, but has been delayed by dry topsoil conditions. Wheat is in various stages of growth and conditions across Kansas this month, and producers should be scouting their fields to see how well the crop is developing, and whether there are any pests, weeds, or nutrient problems that could be solved later this fall or winter. Last week I found a couple of problems or abnormalities on wheat at the Agronomy North Farm north of Manhattan.

The first problem (photo 1) is poor growth of secondary roots, or crown roots. This lack of crown root development is due to dry topsoils. A wheat plant should ideally have a well-developed crown root system by now to help prepare it to survive the winter.

Jim Shroyer, K-State Research and ExtensionPhoto 2. Example of wheat with good crown root system. There are some primary roots coming out from the seed, although they cannot be seen in this photo. These roots are used to take up water and nutrients throughout the whole growing season, but there aren’t very many of these roots so that can’t support a plant with one or two tillers for very long. The crown root system is, or should be, much more extensive than the primary root system.

In photo 1 there is a small whitish protrusion angling out of the crown area about an inch above the seed. This is a crown root starting to grow. Crown roots take up most of the water and nutrients from the soil, so they are very important for the plant to survive the winter. By this point in the season, there should be a much more extensive crown root system than what I found on this plant. All we need is some moisture in the soil and these roots would quickly begin developing.

Photo 3. After another month’s growth, wheat from the same field as in photo 2 above has crown roots 9 to 10 inches long. This is what you’d like to see. The crown roots in these two photos (2 and 3), taken a few years ago, got off to a slow start due to dry soils (similar to this year), but grew quickly once the wheat received some moisture. In contrast to this, you can see what a well-developed crown root system looks like in photo 2, taken in early December a few years ago. This is what you’d like to see in your wheat crop before it goes into the winter. With all these roots the plant should be well anchored so that if cows were grazing the wheat they couldn’t pull the plants out of the ground.

Another thing I’ve seen this week at the North Farm is wheat with yellow banding on leaves due to cold temperatures (Photo 4). When temperatures are quite cold at the time tillers emerge, it can result in yellow banding on the leaves. If this is the cause of the yellowing, symptoms should eventually fade away. click image to zoomJim Shroyer, K-State Research and ExtensionPhoto 4. Yellow banding on leaves caused by cold temperatures when the leaves first emerged. This will fade away with time.


Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...


Comments (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


Grain Storage Systems

Behlen Grain Storage Systems offers large capacity bins with diameters from 16’ to 157’ and capacities exceeding 1,500,000 bushels. All ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form