Wheat Growth Staging Guide

Wheat Growth Staging Guide
Wheat Growth Stages
Feekes Scale
1
2
1st Node = Feekes 6
2nd Node = Feekes 7
Flag Leaf = Feekes 8-9
Boot Stage = Feekes 10
Feekes 10.1
Awns visible, head emerging
through slit of flag leaf sheath.
Feekes 10.3
Heading ½ complete.
Feekes 10.5.1
Feekes 11
Beginning flowering.
Ripening.
3
Close up of 1st node – Feekes 6
4
Close up of 1st node – Feekes 6
5
Feekes 8 – Flag leaf (last leaf) fully emerged.
Feekes 9 – Flag leaf (last leaf) fully emerged
and ligule is visible.
6
Feekes 10.1 – note awns just visible and head
Is emerging through slit of flag leaf sheath.
Feekes 10.3 – ½ of wheat head is visible.
7
Feekes 10.5 –
Ear clear of
leaf sheath
and no flowers
are visible.
Feekes 10.5.1 –
Beginning of
flowering.
Feekes 10.5.1 –
Beginning of
flowering.
8
Feekes 10.5.1
Beginning of flowering.
9
Feekes 10.5.2 to 10.5.3
Flowering complete to top of spike = Feekes 10.5.2. Flowering complete to bottom of spike = Feekes 10.5.3.
10
Feekes 11.4
Harvest ready – kernels hard, plants dry.
11
Photo and illustration credits:
Figure on Page 1:
Wheat growth figure adapted from Wheat Documenta, 1980, Ciba-Geigy.
Photos on pages 2 & 3:
Wheat Watch – Kansas State University
www.oznet.ksu.edu/wheatwatch
Adopt a Kansas Wheat Field – Kansas State University
www.oznet.ksu.edu/aakw/
Photos on the front cover, pages 4 – 11 and the back page:
Paul Vassalotti, Technical Service Representative, BASF.
Always read and follow label directions.
Headline is a registered trademark of BASF.
©2008 BASF Corporation. All Rights Reserved.
Wheat Disease Identification
& Rating Methods
Common Foliar Diseases of Wheat
Leaf Rust
Tan Spot
Septoria Leaf Blotch
Powdery Mildew
Stripe Rust
Barley Yellow Dwarf Virus (BYDV)
Viruses cannot be controlled by fungicides
Photos courtesy of Stephen Wegulo, Plant Pathologist, University of Nebraska
Wheat Disease Rating Scale
In order to assess the effectiveness of Headline compared to the untreated check, wheat leaf ratings
should be taken about 4 weeks after application. Evaluations should be made as follows:
• Look at the flag leaf and the leaf just below the flag leaf to determine the diseases present.
• Use visual charts as guides (see examples below) to determine percent leaf area affected by the
disease. Use the chart which most closely represents the leaf area affected. Include the area affected
in the halo that often surrounds the necrotic area or rust pustule.
• Use scale (0-9) for each plant where 1 = 10%, 2 = 20%, 3 = 30% etc. Use 9 when 90% or more of the
leaf area is covered.
• Rate 12-15 leaves per treatment. Record on appropriate data form.
10%
20%
40%
60%
80%
10%
20%
40%
60%
80%
0-9 Rating Scale
% Leaf Area Affected
0 = 0% affected
1 = 10% affected
2 = 20% affected
3 = 30% affected
4 = 40% affected
5 = 50% affected
6 = 60% affected
7 = 70% affected
8 = 80% affected
9 = 90% affected