FERTILIZERS AND MANURES FOR THE ORCHARD 209 



Table LXVI 

 results on spitzenburg apple trees from use of nitrate of soda 



(after LEWIS AND BROWN) 



In cultivated orchards in the eastern part of West Virginia 

 where the soil is more fertile, the response from fertiliza- 

 tion was practically negligible after eight years' work. 



179. The Pennsylvania experiments.— The Pennsyl- 

 vania Station - reports a set of experiments in tilled or- 

 chards which is not in harmony with several of the others 

 considered. It was found that under the conditions of their 

 experiments, both manure and artificial fertilizers have 

 given as good results in a cultivated as in a sod orchard. 

 "In six cases with tillage, the gains from commercial ferti- 



1 Orchards Nos. 1 and 2. 



a. Fertilizer broadcast on ground. 



b. Fertilizer sprayed on ground as liquid. 



c. Fertilizer sprayed on ground and tree as liquid. 

 Orchards Nos. 3 and 4. 



Treatment began in 1916. All broadcast on ground. 



2 Penn. Agr. Exp. Sta. Bull. 153. 



