22 BULLETIN 1451, TJ. S. DEPARTMENT OF AGRICULTURE 
even with a chemical 100 per cent effective it would be necessary to 
reinspect properties where treatments had been made. 
Barberry bushes were found in a woodland pasture on a farm 4 
miles south of Decorah, Iowa, on gently rolling land with a rich, 
deep soil. Most of the bushes were in the shade of trees, which 
caused the shoots to be long and spindling; there were few shoots 
to the bush. Along the edge of the wood lot, in a clearing in which 
the bushes had been cut down three years previous to the date of 
treatment, sprouts had formed in dense clumps approximately 1 
foot in diameter. 
Salt was purchased in Decorah, hauled to the wood lot by a 
farmer, and applied October 6, 1922, in the same manner as at Mc- 
Gregor. The costs were as follows : 
Salt, 50 hundredweight at 80 cents $40. 00 
Labor, 21 man-hours at 40 cents 8. 40 
Team and wagon 5.00 
Total cost 53.40 
Number of bushes treated 600 
Salt per bush pounds— 8. 3 
Cost per bush i SO. 089 
When this area was inspected in the summer of 1923 only 5 living 
bushes were found, so that the treatment of these 600 bushes was 
over 99 per cent effective. A considerable number of seedlings that 
had not been treated were found in the wood lot. This seedling 
problem will be discussed later in this bulletin. 
On a farm near Marshall, Wis., barberries were growing in a 
level wood lot, among a thick underbrush composed chiefly of prickly 
ash, rose, hazel, and currant. The soil was rich, deep, black loam. 
Some of the bushes had been cut down and sprouts had developed, 
but most of them had not been disturbed previously. They were 
mostly of small size, averaging about 6 inches in diameter at the 
base. Salt was purchased in bulk at Madison. Wis., and sacked 
and shipped to Marshall, where it was hauled to the field, distributed 
in pails, and applied to the individual bushes in the manner pre- 
viously described. The cost was as follows : 
Salt. IS hundredweight at To cents $13. 50 
Freight and handling charges 4. 00 
Labor, 8 man-hours at 50 cents 4. 00 
Team and wagon, 2 hours at 50 cents 1.00 
Total cost 22.50 
Number of bushes 200 
Salt per bush pounds 9 
Cost per bush $0,112 
An inspection of this property in the summer of 1923 and again 
in 1924 disclosed no living bushes showing signs of having been 
treated with salt. However, there were numerous small plants and 
seedlings, most of which, no doubt, had been hidden by tall grass 
and shrubs at the time the salt was applied, and so had been missed. 
There were indications that salt was nearly 100 per cent effective 
when applied in the quantity and manner specified. 
On another farm adjoining the one just described, barberries 
were growing in an open, level, seeded pasture. The bushes had 
