GETTING STARTED: The first step for
installation and/or maintenance of turf is to become acquainted
with the condition of the soil. With what type soil are
you dealing? How much organic matter is there? Is the base
fertility balanced? Does the soil need lime? The best way
to answer most of these questions is with a soil test. North
Country Organics (NCO) recommends both chemical and biological
analysis. Upon request, NCO can provide you with the materials
necessary to submit samples (please do not send soil samples
to NCO). If you do a lot of testing, NCO strongly suggests
investing in one of our durable soil samplers. The sampling
probe simplifies the task of drawing up soil samples for
analysis.
FERTILIZATION: If the base fertility
of the soil is relatively well-balanced, our fertilizer
program consists of only 2-4 applications per year, depending
on the length of your growing season and the condition of
the soil. The program can begin in early to mid-fall with
an application of 20 lbs. of Pro-Gro 5-3-4 or 12½ lbs.
of Nature's Turf 8-1-9 per 1000-ft.2 (NOTE: 20-25
lbs of Pro-Start 2-3-3 may be substituted for Pro-Gro or
Nature's Turf in areas where thickening turf density is
important-the purpose of Pro-Start 2-3-3 in the fall is
to build a thick and invasive root system that will help
crowd out weeds and provide a lush, carpet-like appearance
in the spring. NOTE: Plant density may not increase sufficiently
where clump varieties of grasses, like fescue or ryegrass,
are growing. Many customers begin our fertility program
in the spring using Pro-Gro 5-3-4 or Nature's Turf 8-1-9
with equally good results. In the fall, Nature's Turf 8-1-9
or Pro-Gro 5-3-4 increases carbohydrate content in the roots,
significantly decreasing winter kill of turfgrass plants.
In the spring, we recommend applying 20 lbs. of Pro-Gro
5-3-4 or 12½ lbs. of Nature's Turf per 1000-ft.2.
This application pushes lush top-growth plus tiller and
rhizome growth for magnificent looking turf. We suggest
applying Pro-Gro 5-3-4 or Nature's Turf 8-1-9 early in the
spring when the grass first begins to green-up for better
weed control. Mowers should be set high to control weeds
through the spring and summer. Mid-spring fertilization
is better for weed-free turf. In regions where there are
longer growing seasons 12½ lbs. per 1000-ft.2
of Nature's Turf 8-1-9 can be used as a late spring fertilizer
to sustain color and growth. Common sense is your best tool
for determining application times and frequency of Pro-Gro
5-3-4 or Nature's Turf 8-1-9. Heavier applications of Pro-Gro
5-3-4 (25-30 lbs. per 1000-ft.2) are recommended
on soils with very low base fertility that are receiving
NCO fertilizers for the first time.
MOWING: Mowing practices are as important
as soil care in an ecological turf program. Proper mowing
is the single most effective way of controlling weeds without
herbicides. Mower blades should be sharpened on a regular
basis (every 7-8 hrs of mowing time). Dull blades tear and
stress the plant inhibiting its natural resistances and
aggressive growth. The plant spends more energy recovering
from being mowed and less on competing with weeds, insects,
and disease. Turf should always be mowed high (2½-3½
inches) and often, rarely if ever removing more than one-third
of the total height. Taller plants can photosynthesize energy
more easily, shade out low growing weeds such as crabgrass,
and develop deeper and more extensive root systems. Clippings
should not be collected. Recycled lawn clippings can add
up to 2 pounds of nitrogen per 1000-ft.2 per
year and some organic matter. Areas where large quantities
of clippings threaten to smother the turf should either
be chopped finely with a mower or gathered for compost and
reapplied to the lawn when decomposed. If clippings must
be collected, 1 - 2 additional applications of Pro-Gro 5-3-4
or Nature's Turf 8-1-9 per year are recommended.
WATERING: In most cases, leaving the
responsibility of irrigation to mother nature is better
than entrusting it to an automatic system, especially one
that is activated by a timing device. Too much or too little
water can stress turf plants and lower their resistances
to other problems, such as insect or disease attack. Over-watering
reduces the amount of oxygen in the soil, causing stress
to roots and to microorganisms. Anaerobic soil conditions
can cause many other problems. Too little water can be even
worse, causing severe stress to plants and soil organisms.
Recent research suggests that low volume - high frequency
irrigation may be best for mitigating stress to turf; other
experts disagree, opting for deep and infrequent watering.
The trick is to avoid the extremes. Soils rich in organic
matter can buffer turf from those extremes by absorbing
more water during wet periods, building greater reserves
for periods of drought.
WEED CONTROL: A weed is a misplaced
plant. Millions of dollars worth of so-called weeds are
sold each year as ground covers, perennials, herbs and wild
flowers. However, most people don't want them in their lawns.
Weeds are effectively controlled in an ecological program
in some of the following ways: Turf grown in healthy soil
is a very aggressive plant that can crowd out or smother
most weeds when fed and mowed properly. Some university
studies indicate that good mowing practices (mentioned above)
can control certain weeds as well or better than herbicides.
A diverse mixture of turf grasses is also important. A monoculture
of only one or two species of turf plants in a lawn does
not compete as well against weeds. If conditions arise that
one or two cultivars cannot tolerate, weeds may begin to
dominate the opened spaces. Once weeds gain the upper hand,
they become much more difficult to control. A genetically
diverse turf is more able to survive, thrive and compete
against weeds under most conditions. Where weeds are already
well entrenched, WeedBan, a natural organic pre-emergent
herbicide, can be used. Corn gluten, the active ingredient
in WeedBan, breaks down into allelochemicals that inhibit
root development on the germinating seeds of crabgrass,
dandelion and many other common annual lawn weeds.
NEW INSTALLATIONS: Choice of seed is
very important when renovating or installing a lawn. Our
turfgrass consultants have spent over thirty years developing
a blend of grass seed that we have appropriately named Eco-Blend.
Eco-Blend is a genetically diverse seed blend that will
grow well in almost any conditions. It has mostly deep rooted
varieties to locate water and nutrient more easily and is
endophytically enhanced (endophytically enhanced grasses
contain natural endophyte fungi living symbiotically with
the cells of the plant and found to be insecticidal to foliar
feeding insects) to repel foliar feeding insects. The mix
is specifically designed for great looks and a long life-span
with a minimum of inputs needed. A soil test is always recommended
before a new seeding or renovation of an old lawn that hasn't
been tested in the past 3 years. Soil amendments such as
lime, greensand, rock phosphate or compost may be recommended,
depending upon the outcome of the soil test. Under normal
conditions, apply 20 lbs. of Pro-Start 2-3-3 per 1000-ft.2
and lightly work into the surface of the soil before seeding
down 5-7 lbs. of Eco-Blend per 1000-ft.2. Early
fall is the best time of year to install permanent lawns
from seed. NCO offers several other blends of endophytically
enhanced seed. Please ask for our free flyer entitled Turf
Seed Blends.
AERATION AND DE-THATCHING: With organic
turf care practices, aeration and de-thatching can quickly
become obsolete and unnecessary activities. The populations
of microbes, earthworms, and other beneficial organisms
that thrive in a healthy soil decompose thatch and clippings
faster than they can be produced. That digested organic
matter plus the recycled bodies of the bacteria themselves
create humus which expands and contracts within the soil
by the varying levels of moisture content, creating air
and water passages, relaxing soil compaction, and improving
the crumb structure of the soil. Earthworms that thrive
on organic matter dig deep and extensive tunnels through
which air and water can travel and microorganisms are constantly
aggregating soil particles.
DISEASE CONTROL: Many of these beneficial
bacteria and fungi whose populations explode in healthy
soil also compete antagonistically with pathogenic fungi.
Studies noted in the Cornell University Turfgrass Times
warn that soils with low organic matter content managed
with high levels of pesticides are much more susceptible
to devastating turf diseases. Organically maintained turf
rarely has problems with plant pathogens. When problems
do arise, they are usually less severe. Re-establishing
colonies of antagonistic organisms can often be accomplished
with applications of compost
tea (see our flyer on making and using compost
tea) and STRESS-X (seaweed extract).
INSECT PROBLEMS: Plants that are grown
in healthy soil are less susceptible to insect attack just
by virtue of natural selection. Insects that cull out weaker
plants are doing the plant species a favor by allowing only
the strongest and healthiest to reproduce. However, when
a whole lawn is planted in unhealthy and infertile soil,
disaster can strike. Moreover, a balanced soil ecosystem
contains many predator and parasitic organisms that can
help with pest insect control. Other controls-such as good
cultural practices and endophytically enhanced seed-help
tip the scale in the turf's favor. Grubs can be controlled
in many circumstances by using Grub-Guard beneficial nematodes.
When applied to thoroughly moist soil Grub-Guard nematodes
can infect and kill most species of lawn grubs. Lawns with
severe grub damage can be renovated with Grub-R Mix, a special
blend containing a high percentage of tall fescue, which
has proven to be resistant to grub damage.
A FINAL NOTE: Ecological turf care is
not a great mystery. It is a different system that requires
observation and common sense. In an ecological program,
soil life ends up doing most of the work.