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42 THE RURAL VOICE
NEWS
OAC SEMINARS
STRESS SAVINGS
Minimum spcnding for optimum
returns was the underlying theme of the
Field Crops Day of the agricultural
conference at the Ontario Agricultural
College (OAC) in Guelph last month.
Dr. Clarence Swanton of the OAC,
addressing the subject of integrated
weed management, said that while
weeds must be controlled, 100 per cent
control is unreasonable. After the criti-
cal application period, he added, it may
be that weeds should be left alone.
He also said that farmers can save 60
per cent of herbicide costs with band
application and just one cultivation.
According to Dr. Tony Vyn, another
OAC crop scientist, there is a market
waiting forcom of high quality. The wet
milling industry, he said, would buy
twice as much from Ontario if the qual-
ity it demands — kernels free of cracks
and fines — were available, he said.
Stress cracks occur during the high-
temperature drying of high -moisture
corn or from excessive augering, he
added, and are not caused by combines
if they are well -adjusted.
Some wet millers, however, he said,
won 'tpay a premium for the quality they
demand.
It pays to select the right inoculant
for soybeans, was the message from Dr.
David Hume, a crop scientist at the
Ontario Agricultural College.
Some hybrids make better use of
inoculants than others, he said, adding
that his tests have shown the granular
inoculant 532C and GRIP to be the most
consistent on hybrids.
Dr. Bob Sheard said that the planting
date for barley should be as close to
April 27 as possible but not later than
May 5. After that, he said, yield will
drop by as much as 55 kg/ha/day.
In a test, moving the planting date
back from May 26 to May 5 doubled
yields, he said. Chepstow cash cropper
Tony Lang added that red spring wheat
should be planted six days before barley
for the best results.
To achieve 100 bushels an acre,
Sheard said, plant early, test soils, use
adequate nitrogen, scout fields before
applying pesticides, use certified seed,
and look for rust -resistant varieties.°
Adrian Vos