The Rural Voice, 1991-04, Page 30FARMERS! At Seeding Time
Know the Pounds Per Acre
with the Application Rate Scale
Quick & Easy to Use
Use for: • Seed Grain • Beans • Corn • Fertilizer
• Grass Seed on all types of drill planters
$50.00 each or 2 for $90.00
(Postage & tax included)
send cheques to:
DKS Enterprises 519-655-2570
Box 765, Tavistock, Ont., NOB 2R0
RUBBER TIRE
PACKERS
Order Now from:
HAROLD JONES
ENTERPRISES
Harrow
Attachment
Available
519-848-2799
SOYBEAN GROWERS
THE RESULTS ARE IN!
OAC Libra, Maple Donovan,
and OAC Dorado are the yield leaders
RED TAG VIGOUR PLUS — Minimum 90% germination
and excellent vigour
CUSTOM SEED SOYBEAN CLEANING AVAILABLE
411110110A0 -
SOYBEAN GROWERS
Quality Soybean seed
is not expensive.
It's priceless.
FIRST LINE TESTS FOR
SEEDLING VIGOUR
that may make all the difference
to your 1991 yield.
• BICENTENNIAL — 2600 hu
• OAC SCORPIO - 2600 hu
• OAC LIBRA — 2650 hu
• MAPLE DONOVAN — 2750 hu
• OAC DORADO - 2850 hu
• HAROSAN — 2900 hu
• HISTICK PEAT INOCULANT
• SUPER HAY INOCULANT
FOR BALING
Hill & Hill Farms Ltd.
Bev Hill
26 THE RURAL Vr
VARNA
233-3218
Pete Rowntree
expectancy tables for each species of
plant.
According to Baillargeon, the life
expectancy curves drawn up in this
way were good but slightly optimistic.
This has become apparent as seeds
have been stored in real time, and
assessed for how the storage has
affected them.
Although minor, this problem may
be eliminated with new liquid nitrogen
technology that has been designed for
long-term storage. Baillargeon says
initial work done in the United States
has convinced gene banks in that
country the technology is safe. Bail-
largeon says that PGRC will purchase
three liquid nitrogen freezers before
the end of the fiscal year, making
them only the second country in the
world to do so.
The technology is essentially
identical to that used for cattle semen.
Liquid nitrogen, at a temperature of
-196°C, is introduced into a large,
sealed container. The samples, in this
case — 1,300 - 1,500 seeds — are
sealed into a plastic tube. Each ac-
cession will consist of three tubes of
seed. The tubes are packed into a
metal canister and stored over the
liquid nitrogen in a "lazy Susan" type
of rack. The liquid nitrogen freezers
are five feet in diameter, and have an
856 litre capacity, giving enough room
to store 3,000 tubes (or 1,000 access-
ions) of seed. Once in the freezer, the
seed need not be touched again for
100 years.
Baillargeon says that they had the
choice of two types of storage —
complete immersion of the samples in
the liquid, or storage of the samples in
nitrogen vapour. The latter was
chosen for the reason that in total im-
mersion, some liquid nitrogen might
get onto the seeds. If the seed coat is
completely undamaged, this is all
right, but if the coat is cracked, the
nitrogen may get under the coat and
will boil when the seed is removed
from storage and warmed up. If this
happens, the seed will explode, a risk
that PGRC decided not to take.
Instead, the seed will be suspended
over a pool of liquid nitrogen, allow-
ing the vapour to chill the samples. A
minor area of concern with this system
is that the temperature in the vapour is