•27(1 
THE NATIONAL NURSERYMAN 
about 85 to 90 pci- cent of the soft scale on greenhouse 
jilanis may lx- kilbal using nicotine oleale at a dilution of 
1 pai t of nicotine to 500 ])arts of water. 
Kifth, Preliminary experiments have shown that adults 
and larva' of the white tly may he killeil at the same di¬ 
lution as used for the soft scale. 
All experiments mentioned were conducted under lab¬ 
oratory conditions, care being taken to hit all the insects 
used in the experiments. Under field conditions it may 
he necessary to us(^ a higher percentage. Nicotine oleate 
being noin.olatile it is more necessary to insure striking 
all inse(‘ts than in the use of a volatile compound like 
nicofume. 
Nicofume oh'ate may he made directly from any nico¬ 
tine prejiaration containing free nicotine. Two and one- 
half pai-ts of a 40 j)er cent nicotine solution unites with 
1% parts of commercial oleic acid or red oil. Four and 
one-fourth parts of this soap will then contain 1 part of 
nicotine or will equal 2^/2 parts of the 40 pei- cent nico- 
lim^ solution. Two and one-half quarts of 40 per cent 
nicotine solution costing about $7.00 can he mixed with 
1-14 (luarts of commercial oleic acid costing about 90c. 
making UA gallons of nicotine oleate. For spraying to 
control plant lice, where a gallon of a 40 per cent nicotine 
solution costing about $11.00 would he used to make 500 
gallons of spray, 1 gallon of nicotine oleate costing about 
$6.50 would make 650 gallons of a spray solution as ef¬ 
fective if not more effective than the spray containing 
free nicotine. The nicotine oleate will cost the farmer 
ahout $1.00 a hundred gallons where the free nicotine 
spray will cost $2.20 per hundred gallons. 
To make the oil emulsion spray with nicotine oleate 10 
jiarts of kerosene is mixed with UA parts of commercial 
oleic acid and then 2 V 2 parts of 40 per cent nicotine solu¬ 
tion is added and thoroughly shaken. Ten jiarts of water 
is then added and again thoroughly shaken. For use 
against mealy-bugs, white tly and soft scale this quan¬ 
tity is then mixed with 480 parts of soft water: 
In sprays wiu're nicotine oleate is used the spray water 
must be soft (rain or distilled water). To make nicotine 
oleate only those tobacco extracts containing free nico¬ 
tine can he used. The stearate or palmitate of nicotine 
may he made in the same way, but is not as effective a 
sfiray as the oleati'. Nicotine oleate is not volatile, hence 
siiould not he used on jilants to be eaten, such as lettuce. 
The effect on ])lants has not been completely studied al¬ 
though sprays containing nicotine oleate equal to 1 part 
ol nicotine in 100 of water did not injure tomatoes or 
coleus. Slight injury was noted on tender leaves of 
greenhouse roses wdien sprayed at the above strength. 
On dormant trees the use of a rather nonvolatile oil 
such as linseed, cottonseed, or fish oil emulsified with 
nicotine oleate should he valuable for the destruction of 
insect eggs or scale, insects. 
A patent has t)een applied for this compound and when 
ol)tamed. will be (jiven to the public so that anyone will 
be able to manufacture it. 
■ kOSHO NUaSKHIFS GO. ELECT OFFICERS 
At a special met'ting of the stockholders of the Win. P. 
Stark Nursi-ries, Inc., Tuesday, August 6th, the name 
was changes to Neosho Nurseries Go. 
The fothrv ing ari' Directors: 0. L. Cravens, G. E. 
Ruehnei-, P. >1. Ransom, W. P. Stark, Josiah J. Ilazen. 
The oflicers are: 
Josiah J. Ilazen, Pres, and General Manager. 
G. E. Ruehner, Vice Pres, and Treasurer. 
P. M. Ransom, Secretary. 
The company has purchased the buildings with the 
land adjoining, which have been used as otiices and 
packing houses for several years. They are also extend¬ 
ing their operations at Stark City. 
WANTED 
FOR SALE 
FOR SALE —A well established nursery business near a 
large Western city. Ideal location and very fertile soil. 
Modern office builffing and warehouse, on a good Railroad. 
For particulars address: 
D., CARE NATIONAL NURSERYMAN, 
Hatboro, Penna. 
Under the present conditions we find the mail is 
often delayed and we ask our patrons to please send 
advertising matter promptly to our office at Hatboro, 
Pa. 
HORTICULTURE 
A Magazine of Trade News and Cultural Information 
for the NURSERYMAN, FLORIST, SEEDSMAN and 
GARDENER. A reliable exponent of advanced Trade 
and Progressive Horticulture.. 
Published Weekly 
SUBSCRIPTION $1.00 PER YEAR 
HORTICULTURE PUBLISHING CO. 
147 Summer St. Boston, Mass. 
