DESTRUCTION OF CHARLOCK. 353 
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cure the disease. Sufficient seed to sow a plot one-tenth of 
an acre in extent was steeped in a solution consisting of 1 lb. of 
copper sulphate dissolved in 1 gallon of water, which is 
enough to steep 4 bushels of wheat. 
On November 24th, 1899, two plots, one-tenth of an acre 
each, were sown at the rate of 24 bushels per acre, one 
with pickled seed, and one with seed that had not been 
pickled. No difference could be detected in the growth 
of the plants on the two plots until harvest time, when many 
diseased heads were seen in the unpickled seed plot. The 
plots were cut on August 30th, and threshed on September 
12th. The number of heads examined from the pickled 
seed plot was 6,000, not one of which was diseased, and, 
when threshed, no bunted grains were found. From the 
unpickled seed plot 3,000 heads were examined, of which 
140, or 4°66 per cent., were diseased, and there was a fair 
number of bunted specimens in the threshed grain. 
The following directions are given in the Report for pick- 
ling or steeping seed with sulphate of copper :—‘“‘ The 
solution should be mixed at the rate of 1 lb. of sulphate of 
copper dissolved in 1 gallon of water; this will steep 4 
bushels of wheat. The grain should be spread out on a 
smeoth floor, and the solution poured over it; the grain 
should then be turned over once or twice with a shovel, and 
left spread out thinly until sufficiently dry to sow.” 


DESTRUCTION OF CHARLOCK. 
Experiments in spraying charlock in corn crops were 
carried out in the early summer of this year at three centres 
in Carnarvonshire, under the direction of the Agricultural 
Department of the University College of North Wales, 
- Bangor. 
At each centre three plots, each one-eighth of an acre in 
size, were dressed with sulphate of copper solutions of the 
following strengths :—Plot I., 50 gallons per acre of a 2 per 
cent. solution. Plot. II., 50 gallons per acre of a 3 per 
AA 
