'Nbw York Ageicultukal, Experiment Station. 323 



and at the same time to compare very early treatments with later 

 treatments and thus learn at what periods spraying should hs 

 done to accomplish the best results. 



These investigations were begun in 1897 and have been con- 

 tinued for three seasons. Two commercial plantations have been 

 under experiment. One belonging to King & Robinson is located 

 at Trumansburg on the slopes just west of Cayuga Lake. This 

 was treated three seasons. The other belonging to the Van 

 Dusen JSTursery Co., Geneva, and located on the upland about 

 two miles west of Seneca Lake, was treated in 1899 only. A 

 preliminaiy report giving the results of the work in 1897 may 

 be found in Bulletin 133. A complete report of the investiga- 

 ^ons for the entire period from 1897 to 1899 is now presented 

 for the first time. 



TRUMAE-SBURG EXPERIMENTS. 



PLAN. 



'Hie plantation at Trumansburg consists of 32 rows vnih 11 

 plants to the row. As shown in the diagram opposite it was 

 divided into six plats. Each treatment was given to two plats 

 located in different parts of the plantation. This arrangement 

 wa? '-^r the purpose of equalizing for each remedy the differences 

 in soil and location which might exist in different parts of the 

 plantation. 



For convenience in comparing the effects of very early with 

 medium and late spraying, three series of treatments were made. 

 Series I was begun very early just as the buds were breaking 

 and successive applications were made at intervals of about ten 

 days until seven had been given. Series II was begun when the 

 second spraying of Series I was made. Series III was begim 

 when Series I received its third spraying and Series II its second 

 sprayin- During the remainder of the season the dates of treat- 

 ment were the same for all three series. An untreated row was 

 left as a check for each series. 



