Variety selection
Last updated
February 23, 2014
Criteria for selecting small grain varieties
Choose the kinds of small grains and varieties that are best for your needs. You
can grow small grains for a cash crop, livestock feed (grazing, hay, silage, feed
grain), or as a cover crop for soil and water conservation. You should plant the
best varieties available as this is important in the successful production of small
grains.
Use improved varieties
- Good winterhardiness in winter types
- Stiff straw
- Plant stature
- Disease resistant
Choose the kinds of small grains and varieties that are best for your needs
- Wheat, barley, and oats usually produce more grain than rye.
- Rye is the most winter hardy of the small grains, followed by wheat, barley, and
oats.
- Rye also produces more forage than oats and wheat, but rye is a poor grain producer.
- Wheat and barley make better silage than oats and rye.
- Wheat and oats make better hay than barley and rye.
- Wheat and rye are generally sown as cover crops.
All can be used as a feed grain supplement depending upon the type of livestock
fed. Barley and oats are better for dairy cattle and hogs, while wheat is used mostly
in poultry rations. The potential for using barley as a feed for young turkeys and
other poultry appears to be promising. Oats are fed to horses and are the most palatable
small grain feed, while rye is the least desirable. Interest in oats is also increasing
because consumption of oat bran lowers cholesterol levels in humans.
Triticale
Cross between wheat and rye, can be grown for grain, grazing, and silage. The protein
content of triticale averages from 14 to 18 percent with the lysine content approximately
double that of wheat or corn. Triticale varieties will differ in winter hardiness
and will mature in approximately one week after wheat. Most triticale varieties
can withstand periods of drought stress better than wheat, and test weights range
from 48 to 52 pounds per bushel. Cultural practices for triticale are similar to
those for other small grains. The future of triticale looks promising as a feed
source for swine.
Market classes of wheat grown in U.S.
-
HRW - Central and Southern Great Plains - KS, OK, TX, CO, NB, MO
-
HRS - Northern Great Plains - ND, MN, MT, SD
-
SRW - East of Mississippi River - Il, OH, IN, GA
-
White - WA, OR, MI, NY
-
Durum - ND
In Wisconsin three types of wheat are grown:
- SRW - predominant type
- HRS - small acreage
- SWW - very small acreage
Hard Red Winter Wheat is not grown in Wisconsin
- Too much humidity and rainfall, particularly after heading
- HRW wheats tend to turn soft when grown in Wisconsin
Hard Red Spring Wheat
Can produce adequate breadmaking wheat in Wisconsin because post-heading growth
period is later for HRS than HRW
Usually produce better-quality HRS wheat in drier seasons
Not unusual for Wisconsin's HRS to have poor baking quality
Protein percentage in wheat
Hard wheats: High protein % is important
Want high protein % in bread
Dark Northern Spring Wheat is considered to have the best milling and baking quality
The "standard" protein % is 14%
Premiums are paid when protein is above 14%
Discounts are taken when protein is below 14%
Soft wheats: Traditionally, they have been selected for low protein percentage
Use improved wheat cultivars
Varieties will perform differently at various locations and under different environmental
conditions. There are significant differences in characteristics among varieties
of each kind of grain. When choosing varieties, grain yield is usually the primary
concern. However, with small grains, other factors, such as resistance to lodging,
diseases, and insects; maturity (potential for double-cropping with soybeans); winter
hardiness and ability to withstand adverse weather conditions causing shattering;
milling quality; and test weight should be considered. These factors will
affect and determine the final yield of grain or forage. Thoroughly study the characteristics
of varieties adapted to your area.
Characteristics of improved cultivars
Good winterhardiness in winter wheats
Stiff straw and plant stature
Disease resistant
Baking quality
By diversifying and spreading out the harvesting period, the risks of losses from
weather-related conditions, diseases, and other problems will be greatly reduced.
Do not try to cut costs by saving your own seed. This can lead to increased weed
and disease problems, poor germination, and possibly reduced yields. Grow seed that
has high quality, high germination, and is relatively free of weeds. Certified seed
is a good seed source.
Plant stature
Semi-dwarfs important in Pacific NW Spring Wheat
Over 80% of the HRSW acreage in the US is planted to semi-dwarfs
Advantages of semi-dwarfs
Stand better in highly fertile soils
Often capable of producing very high yields in highly fertile soils (See p 7‑19)
Have a higher HI
Easy to harvest (if weeds are controlled)
Disadvantages of semi-dwarfs
Lower straw yields
Usually have more emergence problems because coleoptile is shorter
May have more weed problems
May have less stress tolerance because root systems tend to be shallower
Good disease resistance
Varietal resistance is the cheapest way to control diseases.
High fertility results in thick vegetative growth - excellent environment for diseases.
Disease resistance may break down at high fertility levels
Higher levels of resistance should result in better protection against disease and
reduce the amount of chemical protection that is required
Early maturing varieties can be double cropped, but they are not often as winter
hardy as medium- to late-maturing varieties. A variety with good straw strength
decreases the possibility of lodging and the possible need of an anti-lodging agent.
Several high-yielding, disease-resistant varieties with strong straw strength are
available. No one variety possesses all the desirable agronomic characteristics.
Therefore, planting more than one variety can enhance profits.
Quality influences milling and bread-making
Varieties with high test weights generally eliminate certain marketing penalties.
Milling objectives are to:
Pulverize the kernel
Separate the kernel layers (for white bread)
White bread made entirely from wheat endosperm pericarp, embryo, and part of the
aleurone are removed
Whole wheat bread made from the whole kernel, so more nutritious because of - PROTEIN
- FIBER - OIL - VITAMINS - MINERALS. Whole wheat bread is more difficult to store
because oil leads to rancidity problems
The main characteristic that determines the use of wheat is GLUTEN
GLUTEN a cohesive, protein-type of substance which gives wheat flour its STRETCHABILITY
and STRENGTH
The 5 MARKET CLASSES of wheat differ according to QUANTITY and QUALITY of gluten
Wheat
|
Quantity
|
Quality
|
Use
|
HRW, HRS
|
High
|
High
|
Bread
|
Durum
|
High
|
Low
|
Macaroni
|
SRW, White
|
Low
|
Low
|
Pastries, cookies cakes, cereals
|
Gluten quality is affected by environment. Desirable conditions for good gluten quality
are:
Fertile soil
Warm (but not humid) growing conditions, particularly after heading
Limited rainfall after heading
Minimal disease problems
Further Reading
Wheat variety selection
strategies
Wisconsin Winter wheat variety
trial results
Wisconsin Small Grains variety
trial results