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Creeping & Colonial Bent Grass
New Construction - 1 - 11/2 lb per 1000 sq. ft.
Overseeding - 1/2 - 1 lb per 1000 sq. ft.
Winter Overseeding (Bermuda) - 1 lb per sq. ft.
Establishment of Bent Grass
Sow seed with a filler in two directions at 90° angles. Seed will germinate best when soil temperature is above 65°F (18°C). Irrigate frequently but lightly until seedlings are
established. Avoid excess water or puddling.
Adaptation Map For Creeping Bentgrass
Please find below an adaptation map for creeping bentgrass. Please note that the Climatic zones are 2, 3, 4, 5, 6, 7. 8, 9, and 10. BUT Bentgrass is not adaptable for
all areas within each climatic zone.
It would be advisable to check with your local Agricultural Extension Office and to note that use of bentgrass in the more southern areas is
almost exclusively on golf courses.
Over Seeding or Inter-Seeding Bentgrass
There have been questions
asked on the proper way to incorporate the New Penn Pals into
existing greens, be it Penncross, Crenshaw, SR 1020, Putter and
Bent/Poa. There is no really wrong way except for the one that does
not provide the desired results. Overseeding or Interseeding has been done for many years numerous ways. The results have always been scrutinized as to the end results
What I found to work the best is to apply a growth regulator (Turf
Enhancer, Primo, etc.) two to three days before interceding. This
will allow the growth regulator to begin suppressing the growth of
the plant. The greens should be aerated with the quadratine using
quarter (¼") or half-inch (½") tines, the tines maybe either solid
or hollow. The choice is at the discretion of the Golf Course
Superintendent. Depending on the type of aerator, the tines should
be adjusted so that they penetrate the soil surface to a depth of
one half inch (½"). This provides and excellent growing environment
for the seedlings. The recommended seeding rate is approximately one
quarter (¼) pound per 1,000 sq.ft.
In most cases the seeding rate has been two to three times
the recommended rate with inadequate results. This is due to the
inter competition between the seedlings. The seedlings are
vulnerable to failure as they competing against each other, Poa
annua and the present bentgrass. A light topdressing will provide a
good seed to soil contact. Another option would be to do a light
verti-cutting prior to seeding. There are probably other aerating techniques
that can be done to accomplish the end result. The process can be
done once or twice a year and if desired bi-monthly depending on how
rapidly the conversion would like to be accomplished.
It is important to keep the seedlings moist during
establishment. An application of a fungicide to control Pythium is
recommended as well as a good starter fertilizer. It is possible to
view the seedlings after five to six days depending on time of year
and weather conditions.
Once the seedlings have established themselves, an important decision will have to be made as to when to begin managing for the new A or G series bentgrasses. It is
important when converting management practices to the new bentgrasses that the mowing height should be kept down during the summer at not to raise the cutting height. As this is the time
the other bentgrasses and Poa annua will thin due to weather conditions and management practices and the A or G series bentgrasses will fill in. It is also important when watering to water
to field capacity as this will benefit the transition to new bents. The A or G series bentgrasses will develop a deep and substantial root system. These bentgrasses perform well under high
traffic and other stresses. The key is to not over manage them.
Provided by: Rick Elyea, Tee-2-Green, Turfgrass Consultant
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