SOUTH-CENTRAL
ND CROP SCOUT REPORT
The NDSU Extension Service annual crop scouting program in
south-central North Dakota continued this past week with the emphasis on
disease and insect presence in small grain. On June 5-7, 38 fields (4 barley, 2
winter wheat, 3 durum, and 29 spring wheat) were checked in Barnes, LaMoure,
Dickey, Stutsman, Griggs, Foster, Eddy, Benson, Wells, and Sheridan counties.
Winter wheat was in the jointing stage and the spring crops were in the early
tillering stage so diseases were not prevalent at this time. Tan spot was found in 17 of 34 (50%) wheat
fields. The highest tan spot incidence was in wheat planted on last year’s
wheat ground. Tan spot on winter wheat had high incidence but low severity on
the highest leaves on the plants. One
winter wheat field in Benson county showed a 64% incidence of leaf rust, the
first rust seen in the scouting area.
The rust was found on the lowest leaves only. A spring wheat field in Stutsman county showed signs of Septoria
spot blotch on 22% of the tillers but of low intensity. A barley field in Barnes county showed signs
of spot blotch with low severity and intensity. Young grasshoppers were prevalent in field margins in 22 of 38
(60.5%) scouted fields.
(Jerry Schneider)
ANNUAL WARM-SEASON HAY CROP PERFORMANCE
As a reference for selecting
warm-season, annual forage crops for hay production, the following are
multi-year average yield and quality factors from the NDSU Carrington Research
Extension Center trials:
|
Forage type |
Yield (15% moisture) |
Crude protein |
TDN |
Relative Feed Value |
|
1998-2000 |
1999-2000 |
|||
|
tons/acre |
% |
|||
|
Foxtail millet - German |
3.5 |
7.45 |
48.9 |
78 |
|
Foxtail millet -Siberian |
2.6 |
9.4 |
46.6 |
76 |
|
Proso millet - red |
2.7 |
11.2 |
59.0 |
91 |
|
Pearl millet - ‘Tifleaf 3' |
2.7* |
10.6 |
55.0 |
85 |
|
Forage sorghum - ‘Mor-Cane 2' |
5.5 |
-- |
-- |
-- |
|
SorghumxSundangrass |
3.2* |
9.7 |
51.3 |
80 |
|
Sudangrass - ‘Piper’ |
2.6* |
11.6 |
52.9 |
82 |
|
Hulless oat - ‘Paul’ |
3.5** |
11.8 |
54.7 |
92 |
*Data
includes second-cuttings in 2000.
**Cool-season
crop; 2-year yield average.
Additional forage crop performance data and production recommendations may be obtained from NDSU Extension Service or Research Extension Center offices.
LATE-APPLICATION RESTRICTIONS WITH SMALL GRAIN HERBICIDES
Timely application of POST herbicides in small grain has been difficult with recent weather conditions. Please refer to herbicide labels and the NDSU Extension Service circular W-253 ‘2001 North Dakota Weed Control Guide’ for restrictions on herbicide application timing based on weed and crop stages. As a quick reference, on page 12 of the EXT Weed Control Guide is a graphic of small grain POST herbicide application timings based on crop stages. POST small grain herbicides that have the latest application timings based on crop stage include 2,4-D, Achieve, Ally, Amber, bromoxynil, bromoxynil + MCPA, Canvas, MCPA, and Starane. When tank-mixing herbicides, application timing should be limited to the herbicide with the most restrictive crop stage.