IDMOHROW’S ORCHARDS 
Burbcmk, Hatch, Thompson, Peak, Halford, Giblin, 
Sharpe and others have made California horticulture 
famous with their new and far better varieties, but in 
many California localities, where climatic conditions 
are ideal, fruit growing is no longer satisfactorily profit¬ 
able BECAUSE OF WORN OUT SOILS OR DEVAS=' 
TATING INFESTATION OF PESTS. 
Now scientific research has brought the greatest cf 
all advances in California's fruit industry history. 
Through years of domestic and foreign research, 
the far flung arm of the United States Department of 
Agriculture has gathered inestimable quantities of 
plant materials for experimentation and further re¬ 
search. From these invaluable efforts the most notable 
gift to California's stone fruit industry is the importa¬ 
tion of wild peach species—especially P. I. No. 55885 
from China, and P. I. No. 36485 from India, which are 
astonishingly vigorous, and which exert complete re¬ 
sistance to the ravages of nematode (eel worm), the 
pest that is tragically reducing productivity and qual¬ 
ity in steadily increasing areas of the state s hereto¬ 
fore most productive fruit districts. 
Demonstrations have proven that these remarkable 
root stocks are not retarded in the slightest degree by 
prevalence of nematode, and, of monumental import- 
For more than a quarter pf a century we have done 
everything poss^le toward ^c uring scientifip investi¬ 
gation and^pxi^rimahtation to tlW%n^ hav /apparently 
achieved by the Universfty'.of California in cooperation 
with -l^e ifiiifed Stated Department of Agriculture for 
the stone fruit industry, and for the nurseries and or- 
ch^Srds o|^alifornia. i ^ ^ 
The first tangible headway in Nematode Resistance 
was made on Kirkman Nurseries property near Mo¬ 
desto, in 1928, by the University of California. Bokhara 
proved to be highly resistant in comparison with all 
others. Other highly resistant peach varieties have 
been discovered by the University; most notably Shalil 
P. I. No. 36485, brought by the United States Department 
of Agriculture from India, and the two Yunnons, P. I. 
No. 55885 and No. 55886, brought by the U. S. D. A. 
from China, and three strains of Myrobolan plum. 
Last season we purchased all of the seed of these 
nematode resistant varieties that were available from 
Experimental Stations at $25.00 per thousand. These 
we planted, together with our own supply. All of these 
trees are sold for this winter's planting—except small 
quantities we are reserving for the experimentation of 
those who may be interested. 
once EVERYWHERE, whether there is nema¬ 
tode infestation or not, they greedily search for 
—and find astonishing quantities of plant nutri¬ 
ment where other rootstocks succumb to mal¬ 
nutrition. This is outstandingly demonstrated 
even when used as replants where diseased or 
worn out trees are replaced. 
Apparently no amount of fertilization will 
induce our usual root stocks to compete suc¬ 
cessfully with these wild relatives of our do¬ 
mestic peach, innured to hardship as they are 
through the countless centuries of slow migra¬ 
tion and adaptation. 
Most interesting of all is the remarkable per¬ 
formance of our commercial varieties when 
budded on to these wild root stocks. Consider¬ 
ing their unequalled vigor usual pruning 
method will be revised. With intelligent prun¬ 
ing cooperation of owners it is apparent that 
new, all-time high in tonnage and quality will 
invariably result. 
Conscientious inspection and quarantine 
efforts of the Federal, State and County Agri¬ 
cultural Departments have not resulted in any 
apparent retarding of the steadly relentless 
spread of the destructive microscopic worm. It 
has been freely forecasted that in time nema¬ 
tode would double the cost of California fruit 
production in stone fruit and some other im¬ 
portant varieties—if not, in fact, completely 
wipe out the industry in large areas. 
BETHANY ISOLATED NURSERY SEEDS PLANT 
The world's first 100-acre "factory" designed to keep pure fruit seed strains 
PURE. No cross pollination with commercial peach or nectarine varieties will 
Phone Telepaph: Tracy 9D-J-2 
lessen the inherent resistance of P. I. No. 55885 (Yunnan Cling), from China, 
shown above with Bill, the 3rd. 
