Fertilizers for Peach Orchards 163 



6. "The yield of fruit was very nearly doubled by the 

 use of nitrogen. 



7. " Nitrogen delayed maturity several days. 



8. "The fruit was not as highly colored in the nitrogen 

 blocks as in the others. The high color of the non-nitrogen 

 rows was not due to the influence of potash or any other 

 fertilizer but rather to the extra sunshine that reached it 

 through the sparse and sickly foliage. 



9. "The difference in size of fruit was not great but 

 nitrogen and potash in combination produced a slight in- 

 crease. 



10. "The average gross income per acre per year from 

 all the nitrogen plats was $468.85 and from the non-nitrogen 

 plats was $275.43. 



11. "The influence of lime could not be definitely deter- 

 mined and must be regarded as largely negative although 

 the production was somewhat increased. 



12. "An experiment on young trees at Cherry Run on 

 the same kind of soil was carried on in a similar manner to 

 the Sleepy Creek test. 



13. "No appreciable influence of any fertilizer could 

 be detected the first year, due probably to the inability of 

 the young trees to take up and assimilate large quantities 

 of plant food. 



14. "After the first year nitrogen produced a strong 

 growth of wood and foliage, while potash apparently weakened 

 the vigor of the tree. 



15. "Only a small crop of fruit was produced the fourth 

 year, but it was practically all from the nitrogen-fed trees. 



16. "The theory that heavy fertilizing with nitrogen is 

 injurious to the peach is shattered by these experiments, 

 as is also the former conception of the value of potash." 



