FACTS 
PROVING THE NEWEST SCIENTIFIC 
DISCOVERY A SUCCESS... 
During the past three years, a new chemical substance has been discovered 
which possesses the ability to stimulate root growth in producing new feeder roots 
on pecan root stocks when treated with this substance. The U. S. Pecan Laboratory 
of Texas conducted a series of experiments in using this material to obtain the root- 
ing of pecan root cuttings, which proved most successful. Now this material is be- 
ing used in treating large plants, including trees of specimen size. 
During the planting season of 1939 we treated over three thousand trees of 
various sizes, but mostly all types ranging in size of from 5 to 16 feet in height and 
as old as 12 years, averaging 2 to 5-inch caliper diameter. Our results have 
been almost amazing. The picture shown below will give you some idea as to the 
difference in root growth on both the treated and untreated root systems. On the 
back cover we reproduce a picture of trees 3 inches in caliper dug and pianted 
bare-rooted in December, 1939, which has terminal growth on it now measuring 8 to 
14 inches long. Other trees can be seen in photograph also showing new growth. 
Our plants are wrapped to insure against borer and sunscald attack. We now find 
that large specimen pecans can be more easily transplanted with little or no loss at 
all while heretofore losses on large trees have been so enormous as to discourage 
persons from planting anything but young trees. Modern methods in research 
work are opening up new opportunities in pecan development for the amateur, as 
well as professional growers, large and small. 
This discovery by U. S. Government Pecan Laboratory 
in Texas expedites Root Growth 
NOT TREATED TREATED 
Photograph to right shows 
amazing results obtained in us- 
ing root treatment on trees 
suitable for landscape planting, 
for shade, fruit and beauty. 
To our knowledge a pecan tree is the 
only large tree that will actually repay its 
costs whether it be large or small, and con- 
tinue to produce a dividend throughout the 
years. A hundred years mean nothing in 
the life of a pecan tree and we know of eo 
many instances where one or more trees on rey 
a city lot are helping pay the taxes and Note the extra lateral root growth on 
furnishing shade through the hot summer. the treated root 

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