The Rural Voice, 1999-04, Page 59Tthink of it as a narrow triangle since
the three sides no longer have an
equal influence on disease potential.
Over-use of any one crop will
increase disease pressure. By
rotating, you minimize your potential
for serious disease outbreaks since
each crop is resistant to the diseases
of the previous year's crop. So take
full advantage of this very effective
management tool and ROTATE!
ROTATE! ROTATE! You won't be
sorry !O •
Advice
Groundwater nitrates
— vacuums from above
By Todd Leuty
Agroforestry Advisor
Most of us know that excessive
groundwater nitrate levels due to
leaching or runoff from agriculture is
not a good thing. Trees and other
deep-rooted plants can help reduce
the excessive nitrate problem where it
appears in groundwater.
Just like all agricultural crops we
know that trees also need nitrogen to
survive. The windbreaks you
establish around your best farm fields
or the sheltering trees you have
around the pasture, your house and
barns provide the usual wind
management benefits. The same trees
will also be sucking up excessive
nitrates from deeper soils. Tree roots
help "use up" nitrogen fertilizers that
get past your crop roots. The trees
will be providing a nitrate absorption
service to you throughout the season,
fastest in spring and early summer.
slowest in late fall and winter
Tree roots grow deeper dow n than
crop roots. Among all tree species
root growth patterns can be quite
different. Trees such as poplar and
spruce have shallow roots. Other
trees have deeper, wide -spreading
roots like sugar maple, fruit trees and
ash. Trees like red oak have very
deep "tap" roots. Trees also have •
preferences for the site they grow on.
Poplar, tamarack, soft maple and
Manitoba maple prefer wet soils.
Sugar maple, red oak, white ash and
pines prefer well -drained drier sites.
White spruce and eastern white cedar
can grow on moist or drier soils.
RISSLER
-TMR MIXERS
• Fiberglass -clad plywood inside & out
resists scuffs & deterioration due to
silage acids
• 12 Gauge stainless steel floor & back
• Stainless steel auger trough
• Built-in hardware magnet on
discharge chute
• Zero -clearance turning radius
• Fast 2-5 minute mix time
• Joystick controlled, independent
hydraulic motor drive on each wheel
eliminates maintenance resulting from
drive chains, sprockets and bearings
• Rissler Round Bale Feeder
• Stationary TMR Feed Mixer
• The Original Wooden Conveyor
& Taper Board Feeder
Mobile TMR Mixer Feed Carts
WE ARE THE DISTRIBUTORS FOR RISSLER MANUFACTURING
For your local dealer call:
OLIVET SALES & SERVICE
RR #2 Drayton, Ontario NOG 1P0
ELMER M. BRUBACHER
(519) 638-2555 Fax: (519) 638-2031
Fro8. MUNICIPAL
DRAINAGE
Specializing in:
• Farm & Municipal Drainage
• Clay & Plastic Tile Installations
• Backhoe & Dozer Service
• Septic System Installations
For Quality, Experience, & Service call;
Wayne Cook
PARJIER (519) 236-7390
R.R.2 Zurich, Ont.
««<0p��R NOM 2TO
L. 1 [VI 1 T E ID www.hay.neti-drainage
APRIL 1999 55