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Grain Plots
Grain Plots
Annual grain crops such as corn, sunflowers,
buckwheat, millet, wheat, and grain sorghum can provide food for wildlife in late fall, winter, and early
spring. This chapter explains how to plan and design effective grain
plots, how to choose sites and prepare them for seeding, and how to
plant and manage them for maximum benefit to wildlife.
Limiting
Factors
Many landowners mistakenly believe that grain plots provide
everything that wildlife need. On the contrary, small plantings of
grain are the last part of the habitat puzzle because all wildlife also
need water, cover, and space to survive. Unless quality secure
cover is available next to the grain plot, it could become hunting
grounds for predators, especially in winter. In
addition, another type of food needs to be available during the
spring, summer, and early fall. Another myth is that grain crops
need only be planted and then can be forgotten. Fertilizer and weed
control are also necessary for success of most grain
crops.
Deer consume grain crops more than any
other wildlife species. Unless you want to attract deer, arrange
grain plots away from woods, swamps and other deer cover, or plant the
crop so that it is perpendicular--and not parallel--to the deer
habitat. On the other hand, plots of grain can be used successfully
to lure wildlife from a more valuable crop. Some farmers, for
example, plant buckwheat between forested areas and valuable
cashcrop fields of beans. Foraging deer eat the buckwheat and have
less impact on the beans.
To be suitable for wildlife, food must be nourishing, readily
available, and near cover. A grain crop such as corn that stands
above the snow is especially valuable in winter. Although
nutritional needs and preferences of different species change season
by season, winter is the most critical period for most wildlife. For
example, a pheasant will eat an average of 4 ounces of
corn daily for a total of 23 pounds over 90 days. A deer will eat 6
pounds of corn daily for a total of 540 pounds over the same
period.
Because grains are an annual crop, their value to wildlife is
generally one year. However, if allowed to lie idle a second year,
the decaying grain stalks and weeds that grow will help attract
insects, which supply valuable protein to young-of-the-year
pheasants, songbirds, quail and wild turkeys. The idle fields also offer protective cover.
The most effective grain crops are located next to these idled,
weedy fields.
Planning and
Design
Careful planning can make the difference between projects that
are buried by the first winter blizzard and those that will help
wildlife make it through and beyond the storm. Size, location, and
shape are key considerations. If grain plots are part of your management
plan, allocate no more than 10 percent of your property to them. The
ideal size of each plot is 1/2 acre to 1 1/2 acres. Larger plantings
of 5 to 10 acres help lessen the impact of predators, but smaller
sites attract less-mobile wildlife. The reason is because smaller
plots can often be incorporated within or adjacent to secure winter
cover, such as switchgrass, brushlands, or timber. Song-birds, for
example, rarely venture to food sites more than a quarter-mile from
secure winter cover.
Location, therefore, is at least as important as size. Shape is
also a key consideration. The most effective food plots are square
or rectangular in design and at least 60 feet wide. If your property
is long and narrow, a grain crop 60 feet wide by 700 feet long takes
up only one acre of land. Such plantings make food readily
available.
Several types of grain have value
to birds and mammals. Most wildlife managers put corn at the
top of their priority list. Other grains, in order of their overall
value, are sunflowers, buckwheat, millet, wheat, grain sorghum, and
soybeans. Each food type has advantages and disadvantages.
Corn, for example, stands well above snow and is available
through the winter and well into spring. When planted from late
April through mid-May and treated properly with fertilizer and herbicide, a field of corn should produce
100 bushels or 5,600 pounds per acre. Because it is a row crop, corn
will often require weed control before or after planting.
The black oil variety of
sunflowers provides an outstanding source of fall food for
songbirds, upland birds, mice, and other small
mammals. Drought-tolerant and early maturing, the four to
six feet tall plants are so highly favored that--on the negative
side--little or no seeds are left when winter arrives. Also,
sunflowers compete well with weeds. Broadcast or drill at the rate
of 5 to 10 pounds per acre in May. A typical yield of sunflowers is
40 bushels or 2000 pounds per acre.
Buckwheat needs little or no fertilizer or weed control
because its roots produce its own toxins. But, it does not stand up
well to snow. A good yield is 30 bushels per acre or 1500 pounds per
acre. Buckwheat is able to produce a mature crop in 65 days. Thus,
it can be planted as late as July 1 and produce a crop of mature
seed by September 6. It is ideal for a wet site or a site prepared
for another crop that was not planted because of wet weather.
Millets grow 1 1/2 to 3 feet tall and do better than other
grains in moist soils although they are not prime winter foods for
wildlife because they do not stand up to snow. Varieties include
Japanese, red proso, white proso and German foxtail. Japanese millet
actually favors damp lowlands, mud flats, water courses and river
bottoms. When solid-seeded, millet is usually able to compete with
weeds if they are controlled before planting. Plant from mid-May to
early July at 8 to 10 pounds per acre. Expect to get 30 bushels per
acre.
Wheat and winter
barley grow best
in areas of moderate moisture with cool weather for early growth and
sunny, warm days when the grain is ripening. Planted in fall, winter
barley and wheat becomes dormant in winter and begins to grow again
in spring. Besides green browse for deer, grain be-comes available
to songbirds by mid summer, and provides fall roosting sites for
pheasants. Winter food and cover value are reduced when snow covers
the ground. Plant from September to October at the rate of 120
pounds per acre; a good yield is 50 bushel/ acre or 3,000
pounds/acre.
Grain sorghum has excellent drought resistance, grows well
in hot dry conditions, and stands well in snow. Its key drawback is
that it is not well-suited to Michigan, except for the extreme
southern counties. Grain heads are two to four feet high, and the
small seeds produced attract pheasants, quail, songbirds and deer.
Like corn, grain sorghum needs about 100-120 days to mature; plant
it according to the same schedule. A good yield is 70 bushels or
3,920 pounds per acre.
Although "pure" stands of the above grains are easier
to plant, fertilize and control weeds, certain grain
mixes--especially those containing buckwheat and Japanese millet--are growing in
favor among wildlife managers. Research to determine ideal
combinations of grains is ongoing. Check with your county Conservation District for current
information.
| Seed |
Planting
Rate/acre
|
Planting
Time
|
Planting Depth
(inches)
|
| Corn |
12-15# |
4/15 - 5/15 |
2 - 3 |
| Grain - Sorghum |
6 - 10# |
5/1 - 6/1 |
1 - 2 |
| Buckwheat |
50 - 60# |
5/15 - 7/1 |
1 - 2 |
| Japanese Millet |
10 - 15# |
5/15 - 7/1 |
1 - 2 |
| Winter Wheat or Barley |
120# |
9/1 - 10/1 |
1 - 2 |
| Rye |
55 - 75# |
9/1 - 10/1 |
1 - 2 |
| Sunflowers |
6 - 10# |
5/1 - 6/1 |
1 -
2 | |
Choosing and Preparing
Planting Sites
Site conditions to consider before planting include potential
weed problems, drainage, erosion potential, and soil type, depth,
texture, and fertility. Plant grains on the best soils you have,
avoiding dry or wet sites. Eliminate from consideration any slopes
greater than six percent to avoid erosion problems. Level, fertile
sites are not only easiest to manage, they will produce the greatest
amount of seed and forage per acre. Your local Conservation
District office will have a county soil survey map, which will
include your property, and may help you decide what to plant where.
Also, for more information, refer to the Crop Fields chapter in this
section.
Proper soil pH and fertility are
necessary for the intended crop. A soil test will determine pH
needs and recommend rates of nutrient application.
Your county Extension office has soil-test kits available for a
nominal charge and can analyze samples for you. Before planting any
grain plot, the soil pH should be between 5.5 and 7.0. If lime is
needed to raise the pH level, apply it in the fall before your
planting season or at least three to six months before
planting.
Planting and
Managing
If your planting site is an old field, pasture, or was recently
grass, mow it first. Use a relatively safe, broad-spectrum herbicide
such as glyphosate (Roundup), at least ten days before soil work is
to begin to kill all vegetation and give the grain crop a chance to
compete against weeds. Be sure to read and follow label directions.
If you are using conventional tillage, plow and disk the field and
plant. Planting equipment includes three choices: a corn planter,
grain drill, or broadcast planter. If the field is small, you may
want to spread seed by hand or use a crank broadcaster. After
broadcast planting, lightly disk or drag the field to barely cover
the seed, or go over the field with a cultipacker or roller.
If you are using conservation tillage (usually referred to as "no-till"), you can eliminate the steps of
plowing, disking, and rolling. Whatever method you
choose, however, row-crop grain plantings will need additional
broadleaf weed control. Provide control through another application
of selective herbicide and/or cultivation. Perfectly clean rows,
however, are not critical because weeds do have value for
wildlife--adding diversity to cover and providing
protein-rich seeds such as smartweed, ragweed and millet for food.
As a general rule, if weeds have taken over only 10 to 30 percent of
your food plot, do not be concerned. Slightly reduced yields of 60
to 80 bushel/acre corn and 40 to 50 bushel/acre grain sorghum that
result from some weed competition are still acceptable for
wildlife value.
Plantings of clovers and/or grasses can also provide valuable
wildlife food for wildlife. For more information see the chapters in
the Grassland Management section.

In summary, grain plots can make a big difference toward
improving your property's appeal for many wildlife species. Careful
planning, attention to detail, and not expecting the plots to
provide all wildlife habitat needs are key considerations. Grain
plots are just one piece of the overall "puzzle".
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