Marlin
LIMESTONE
Apply lime on frozen ground
Line can be applied almost anytime, however winter
months are ideal, because the ground is firm and the
freezing and thawing action helps to disseminate hie
lime in the soil.
MARTIN LIMESTONE, INC.
Blue Ball, Pa 354-4125
Gap. Pa 442 4148
$1
REVERSE CAGE LAYER SYSTEM
★ LESS BIRD STRESS
★ MINIMIZES FEED WASTE
★ LET US SHOW YOU A REVERSE CAGE SYSTEM IN OPERATION
AGRI-
ATTLE - HOG - POULTRY EQUIPMENT
2754 Creek Hill Rd., Leola, PA 17540
PHONE: 717-656-4151
FORE HOURS: Mon.-Fri. 7:30 to 5:00; Sat. 7:30 to 11:30
SERVING PA, N.J. AND N.Y.
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EQUIPMENT, INC.
Penn State engineer talks
about herbicide spraying
LANCASTER Farmers
from six Mid-Atlantic states
gathered here recently for
the 7th Annual No-Till
Conference. Donald Daum,
Penn State Extension
Engineer, spoke to the group
on herbicide spraying how
and when to spray for ef
fective weed control.
“Failure to achieve
desired weed control is
blamed on many things,” he
said “We’ve heard them all
too much moisture, too
little moisture, herbicides
applied too early, herbicides
applied too late, soil com
position or texture not right,
too much water used, too
little water used, wrong
material for the species m
question, and on and on.”
Daum pointed out in some
The system has been design
ed for bird comfort!
Each bird has her place at the
feed trough Each has easy
access to water. Obstruction to
light and the flow of air have
been greatly reduced, providing
more uniform ventilation and
lighting for every bird. Com
bined with Chore-Time’s auto
matically controlled air mlettmg
system, you get a layer house
environment designed for bird
comfort and the resulting
better production
instances some of these
reasons for poor weed
control are valid. However,
he emphasized, a closer look
needs to be taken at the
spraying system.
“Is the sprayer right for
the particular job and is it
properly maintained,
calibrated, and adjusted?
Often tunes, poor weed
control can be traced to the
sprayer or the manner in
which it was used,” he said.
Daum advised farmers to
determine the amount of
chemical to put in each tank.
He noted many operators
don’t know the application
rate, the exact capacity of
the sprayer tank or the
acreage they are covering.
“When checking ap
plication rates, I’ve
Not only the
physical shape of the
feed trough, but the
operation of the
feeder has been
engineered to reduce
feed waste. The
trough shape cuts
down on feed loss
from “raking” and
“billing," while the
feeder has been
specifically designed
for Chore-Time’s
programmed and
performance feeding
concept.
AGRI-EQUIPMENT
INC., OFFERS
COMPLETE
• SALES
• INSTALLATION
• SERVICE
Lancaster Farming, Saturday, January 24,1981—D1l
discovered differences of 30
to 40 percent range from
what the operator thought he
was applying. Often un
sprayed areas such as
headlands and drive strips
are included, resulting in
higher than desired rates on
the treated areas,” said
Damn.
He pointed out data from
operator’s manuals or nozzle
catalogs are not sufficiently
accurate for field conditions,
providing only a starting
point. He suggested a
calibration test be made to
determine the application
rate by soraymg a measured
amount of liquid on a known
area and adjusting the
sprayer for conditions.
Daum cautioned farmers
against applying wettable
herbicide powders without
adequate agitation, and
recommended jet or
mechanical agitation be
used, especially in tanks
larger than 150 gallons.
He also told the group to
keep an eye on the sprayer
pumps on the applicator.
“The most common
failure occurs with a roller
pump, wettable powder, jet
agitator combination. Roller
pumps can be rebuilt by
replacing the rollers, but
wear on the pump housing
cannot be corrected. It is
usually feasible to rebuild
the roller pump once,” he'
said.
Daum commented the
replacement of the roller
pump with a centrifugal
pump is an excellent choice.
He said the centrifugal pump
has a long life and produces
a high volume flow to
provide good jet agitation.
POURED CONCRETE WALLS
MANURE STORAGE'dT"
BUILDING CONSTRUCTION
OF ANY KIND
This gives us flexibility to form a manure
storage system to fit your layout.
PRICES QUOTED ON SLOTTED FLOOR
MANURE STORAGE SYSTEMS
★ Cali Ken Groff *■
STRASBURG POURED WALLS
Strasburg, PA 17579
Phone (717) 687-6668
However, the plumbing is
different, he added.
"A centrifugal pump’s
performance is severely
affected by any restriction to
the inlet. Therefore, an in
line strainer in the pressure
line should be used rather
than a suction screen. Also, a
pressure relief valve is not
necessary with a centrifugal
pump so a bypass line is not
needed.”
Poor performance in the
centrifugal pump is
generally the result of not
operating at the rated speed.
Damn said.
“These pumps are sold
with engineered drives to
mount directly on either 540
or 1000-RPM PTO shafts.
However, if the PTO shaft is
operated at less than the
rated speed, both volume
and pressure will decrease.
“The impeller on most
centrifugal sprayer pumps
should rotate 2000-3600
revolutions per minute. In
fact, if the pump is operated
at 10 percent below rated
speed, the volume will drop
10 percent and the maximum
pressure will decrease 19
percent.
“A good solution is to use a
remote hydraulic motor to
power the pump Operating
speed is independent of
tractor engine speed.”
Herbicide flow control,
droplet formation, and
droplet distribution ail rely
on a properly functioning
nozzle. When nozzles are
worn, poor coverage and
uniformity result. Damn
noted.
“Worn nozzles should be
replaced with tips made of a
(Turn to Page 012 )
Square
or Round
Walls
Built Below
or Above
Ground
Aluminum
Forming System
using Redi-Mix
Concrete and
Reinforcing Steel
RD 2 Box 8