ieee T Or WOOD ASHES AND ACID 
Pawor in ATE iON THE YIELD AND 
LOA BEG al OO wh tad Od ol od Bib oe 
WP HEDRICK. 
SUMMARY. 
1. Because of the condition of growth of the plant, manner 
of development of the product, and nature of both plant and 
product, the apple is difficult to deal with experimentally in 
the matter of fertilization. | 
2. The apple growers in New York should give attention to 
the fertility of their soils; for the orchards are growing old; 
the soil of some orchards was not originally fertile; and double- 
cropping has exhausted the fertility of many orchards. 
3. This experiment has to do with potash, phosphoric acid 
and lime as found in wood ashes and acid phosphate. It was 
begun in 1893 and completed in 1904. 
4. The seat of the experiment is a 55-year-old orchard on - 
the Station grounds. The location is a sloping upland with a 
medium heavy clay soil. The orchard had been in grass for 
Several years before the experiment. | 
5. Throughout the experiment the orchard was given clean 
cultivation until about August 1 and was then seeded to a 
cover crop of oats, barley or clover. 
6. The trees were 43 years old when the experiment was 
started. There were 94 trees in the test representing the fol- 
lowing varieties: Baldwin, Fall Pippin, Rhode Island Greening, 
Roxbury and Northern Spy. The orchard was divided into 
eight plats, four treated and four untreated. 
7..Wood ashes were applied to the treated plats at the rate 
of 100 pounds per tree or 4,800 pounds per acre. During the 
last seven years of the experiment acid phosphate was applied 
at the rate of 8'%4 pounds per tree or 408 pounds per acre. 
Calculations made from analyses of the fertilizers show that, 
‘A reprint of Bulletin No. 280. 
