HOW 
HYDROPONICS 
Is An Improvement 
Over Soil Growth 
Eleven elements in soil, in varying quantities, are 
made available to the small root hairs of plants 
only as they are dissolved in water. Very little 
soil contains sufficient quantities of these elements 
to supply the plants with a balanced diet. 
The degree to which the roots receive the dissolved 
solution varies with the soil condition, irriga- 
tion and other factors. In Hydroponics, 
nature is saved the task of providing and making 
available to the root hairs the nutrient solution. 
Hydroponic plants receive a constant, uniform 
supply of complete plant food already in solution 
which means more vigorous, healthful crops. 
ADVANTAGES 
@ IMPROVED QUALITY VEGETABLES AND 
FLOWERS 
LARGER YIELDS 
CLOSER PLANTING 
CLEANLINESS 
UNIFORM RESULTS 
HEALTHIER PLANTS 
SIMPLICITY OF OPERATION 
EASE OF STARTING NEW PLANTS 
REDUCED LABOR 
LOWER COSTS 
NO WEEDS 
NO ROTATION 
NO CULTIVATION 
NO SOIL-BORN DISEASES 


IN ORDINARY SOIL some of the 
essential elements are missing or 
show slight traces. Plants lack vita- 
mins and minerals, are substandard. 
Soil requires cultivating, irrigating, 
rotating season after season. Weeds, 
soil disease. Fertility keeps reduc- 
ing. Yield is small and expensive. 
IN FERTILIZED SOIL essential 
elements are present in slightly 
greater quantity. Plant diet still in- 
complete. Substandard. Weeds, soil 
disease. Fertility keeps reducing. 
IN HYDROPONICS COMPLETE 
PLANT DIET which includes all 
plant essentials. Plants are large, 
productive, rich in vitamins and 
minerals. Tastier. Gravel and sand 
instead of soil. No fertilizing, culti- 
vating, rotating. Yield as large as 
150 to 200 tons of tomatoes per 
acre. 20 pounds per vine. Yield 
ratio of from 6-1 to 10-1 over soil 
growth. 













Fertilizer expensive. Requires culti- 
vating, irrigating, rotating. Yield is 
average and expensive. 









FOR HOUSE PLANTS 
Superior plants of all types can be 
grown by Hydroponics. For indoor 
growing there is no simpler, cleaner, 
more effective way. 
(Photo by U.S. Army Signal Corps) 



GRAVEL FIVE ~ ges 
Se 
Swe 





NUTRIENT 
FORMULA 
1 pound makes 100 
gallons of plant food 
SMALL HOLES solution. 
SIMPLICITY OF 
OPERATION 
Instead of soil, the plant is support- 
ed in gravel or sand. The tin can 
method demonstrates the simplicity 
of operation. 1 pound of nutrient 
solution makes 100 gallons of grow- 
ing solution ...a complete plant 
diet for hundreds of plants. Simply 
feed once a day by setting can in 
solution or sprinkling. 
BACK PORCH 
GARDEN OR 
VAST FARMS 
A basin on your back 
porch 20 ft. long, 2 ft. 
wide and 15 inches deep 
can net you 800 pounds 
of tomatoes per year. One 
Hydroponicum shipped . ee 
400,000 plants. U.S. Army 3 
has a 232,000 sq. ft. in- CHAPMAN-GILBERT CO. 
stallation, 820 W. Ivy St. San Diego, California 

