1 Ocr., 1899.] QUEENSLAND AGRICULTURAL JOURNAL. 337 
Tn order to make comparisons and draw ¢ 
was left unsprayed. The line of 
unsprayed was as definite as betwe 
x lea-field. 
On the Sunday and Monday a few days after the spraying, some heavy 
showers fell. This was just what was required to see if there was sufficient 
nourishment left in the stem to produce seed. 
On examining the field at’ this date—18th J uly—we find several plants 
producing pods on Plot 1, but about 75 per cent. of the charlock has been 
killed. 
onclusions, one part of the field 
demarcation between the sprayed and 
en the ploughed and unploughed portion of 
On Plot 2 about 97 per cent. has been destroyed. Although the corn 
received a slight check after spraying, it appears to bea full crop now. 
On Plot 3 fully 95 per cent. of the charlock has succumbed to the 
spraying ; the corn is slightly darker, and uppears to be a fuller crop than the 
unsprayed plot adjoining. 
The chief conclusions that may be drawn from the experiment are as 
follow :— 
(1) A 2 per cent. solution of copper sulphate, or 
of iron sulphate, is strong enough. 
(2) It is better to increase the number of eallons of 
than to increase the streneth of the solution. 
(3) Although 40 gallons of solution per acre is sufficient when charlock 
is not wbundant, at least 70 gallons per acre should he used where 
charlock is thick. 
(4) Each plant must be thorou 
producing pods. 
A few hints to those who wish to carry 
future date may be acceptable. 
A paratlin cask sawn across the bung makes two good tubs for mixing the 
solution in. If possible, fill the water barrel from + 16 pump, in order to get 
water free from sediment. If obtained from a Stream, it should be strained 
before going into the mixing tubs. Dirty water chokes the Sprayer, Put about 
15 gallons of water in each tub, place 8b. of copper sulphate, or 12 1b. of iron 
sulphate, in a calico bag, and keep stirring the water in the tub with the crystals 
in the bag; it will dissolve in about 12 to 15 minutes. The rough crystals take 
rather longer to dissolve than the crushed. Tf the crystals are placed in the 
water instead of being dissolved from a bag, they have a tendency to choke the 
sprayer. ‘The copper sulphate should be guaranteed 98 per cent. pure. Spray 
about 4 yards wide ata time, using skinned sticks as guides. Walk in the 
direction of drill or plough furrow to prevent stepping down the corn, 
oe 
an 8 per cent. solution 
solution per acre 
ehly drenched in order to prevent it 
out the experiment at some 
THE CULTIVATION OF BROOM CORN, 
CUTTING. 
By DANIEL JONES, 
Department of Agriculture, 
In planning out this operation, the farmer must give ample heed to retain 
sufficient labour, as he may require to deal expeditiously with the crops. 
It is needless to point out the importance of ‘vetting the fibre saved 
without undue exposure to wet weather, for r 
witho 1 : on the good fortune of the grower 
in this respect a considerable amount of the value of the crop depends. I have 
often been caught in my harvesting operations by wet weather, but providing 
the cut material can be got off the field without much delay, and speedily dried, 
the effect of the rain will not be very serious. On the other hand, should 
incessant wet weather eventuate, some considerable logs may be expected, 
inasmuch as the fibre will become discoloured, while that saiveah may be lying 
out in the field will deteriorate considerably. Thus it is almost imperative for 
