CS-LancMttr Farming, Saturday, January 1, 1994
LANCASTER (Lancaster Co.)
The Clyde S. Robison Memor
ial Scholarship Fund established
in Penn State’s College of Agri
cultural Sciences has raised nearly
$23,000 of its first-year goal of
$25,000.
The Scholarship Committee,
chaired by N. Alan Bair, is look
ing for additional contributions to
fully endow the fund by year’s
Poultry
Pointers
from P«fl« C 5)
an inlet at the top of the opposite
side-wall. A 1/5 scale model of the
prototype was constructed of Plex
iglas so that particle motion could
be observed and filmed.
Small-scale models are advanta
geous because they can easily be
modified and large amounts of
data can be collected. Worley and
Manbeck (1993) studied airflow
through a caged-layer facility ven
tilated by negative pressure and
ceiling inlets. The ceiling of the
model was modified to study
single slotted inlets, multiple slot
ted inlets, and porous ceiling
inlets.
Figure 1 is a schematic of the
multiple-slotted ceiling inlet sys
tem. Airflow over a typical cage
row was modeled using FLUENT
and compared to random particle
tracks. Figure 2 shows predicted
airflow patterns and random parti
Hay it and graze It!
Grazing sunrlval comparison
Source University ot fi eorgta multiyeer grtiii
■ 12 years of development end testing by Dr. Joe Bouton et
me University of Georgia prove Alfagreze survives grazing
belter than any alfalfa variety. And because Alfagreze
features upright growth, you have the choice to cut H for hay
or graze it.
■ Alfagraze lowers feed costs...
"While grazing our 120-cow dairy herd on Alfagraze, we reduced our
daily feed costs from $3 a cow to $1.50. Over me next two years we
plan to seed another So acres of Alfagraze. ‘
Dane Mercer, Dairyman, Sweetwater, TN
■ Alfagraze yields like conventional hay varieties.
■ Alfagraze has exceptional winterhardiness.
■ Alfagraze is very leafy with fine stems.
P. L. ROHRER & PRO.. INC.
Smoketown, PA
Scholarship Fund Nears Goal
end. Achieving the $25,000 mini
mum will allow the first scholar
ship to be awarded in September
1994.
The scholarship will benefit full
time first and second year under
graduates in Penn State’s College
of Agricultural Sciences, with pre
ference given to those who ex
press an interest in farming as a
career. Students who remain eligi-
cle (dust) tracks for the best ceiling
slot-inlet system. Figure 3 shows
predicted and observed trajectories
of particles for a typical wall slot
inlet system.
There ate' definite economic
advantages to improved environ
mental control in livestock produc
tion houses. Decisions as simple as
which baffles to open or which
fans to run can have a tremendous
impact on air quality throughout
the production building.
Advances in computer technol
ogy allow for complex engineering
models to be efficiently applied to
problems like these. Agricultural
and biological engineers, in coop
eration with poultry management
faculty at Penn State, are utilizing
these tools effectively and are
interested in making livestock pro
duction more profitable.
Maghirang, R. G. and H. B. Min beck.
1993. Modeling particle transport in slot
inlet ventilated airspaces. Transactions of
the ASEA 36(5): 1449-1459.
Worley, M. S. and H. B. Manbeck. 1993.
Modeling contaminant concentrations in
ceiling inlet ventilation systems. Paper No.
93-3012, American Society of Agricultural
Engineers. St. Joseph, MI.
sia
References
PH. 717-299-2571
ble may receive the scholarship
more than once.
Robison was a Washington
County dairy farmer, who was
well-known throughout the state
by his service in a wide variety of
farm organizations. He died unex
pectedly in 1992.
‘The fund has been established
in his memory to perpetuate the
Trade Agreements Raise
ANNAPOLIS, Md. Accord
ing to Maryland Secretary of
Agriculture Robert L. Walker, the
successful conclusion of the nego
tiations on the General Agreement
on Tariffs and Trade (GATT)
combined with the recent approval
of the North American Free Trade
Agreement (NAFTA) offer excel
lent prospects for the expansion of
the exports of Maryland agricul
tural and food commodities.
‘These trade agreements could
not have come at a better time for
Maryland food businesses. With
Governor William Donald
Schaefer’s leadership, we have
been working tirelessly during the
last several years to make contacts
EFFICIENT
um f/re
f /
ideals for which he stood lead
ership, determination, and pro
gressive agriculture,” Bair said.
“The committee is pleased with
the response to the appeal for
funds for the scholarship, and en
courages individuals and organi
zations who have not contributed
in the international marketplace.
Our hard work has been paying
off. Now with these trade agree
ments, there will be greater oppor
tunities for growing overseas
markets for what we produce in
Maryland,” Walker said.
‘The GATT paves the way for
the elimination of trade barriers
around the world. Maryland food
producers can look forward to
having their products welcomed
and available to consumers worl
dwide at a fair price,” said Walker.
hW"
RELIABLE
lo help meet the immediate goal
for endowment.”
Contributions may be sent to
the Clyde S. Robison Scholarship
Fund, 232 Agricultural Adminis
tration Building, University Park,
PA 16802. Checks should be
made payable to Penn State.
Prospects
As Maryland’s Agriculture
Secretary, Walker has been a
strong proponent of international
trade. Under his leadership Mary
land agricultural products are now
exported around the globe. Exam
ples include wine to Canada and
Japan, apples to Venezuela,
Christmas trees to Puerto Rico,
com meal and bakery products to
the United Kingdom, fruit juices
lo Denmark, honey to Saudi
Arabia and jams and jellies to the
Caribbean and Central America.
WWWWWW
HEAT
Steel Construction
Pattern Is Directed
Outer Walls Cooler
lostic Light Flashes
If Problems Occur
Air Intake Creates
Bent Flame Which
hcreases Efficiency
Rod Monitors Heat
Chamber Operation
Electronic Igniter Is
' To Protect Against
Heat And Damage
I, Warm Air Output
Valve Is Protected
Against Corrosion
And Radiant Heat
tottom-Draw Design
lows For Consistent
Gas And Air Mix
its and subcomponents,
defects in material and
the date of installation.