14 2 



MASS. EXPERIMENT STATION BULLETIN 276 



Tahi K 10. — Fertilizers ArruEi) kach year, (poltnds per acre.) 



117.0 



1107.6 



L'83.0 



Fertilizer iiiiitcrials 1926 



Ammo-Phos 2 1 6.2 



Fish 200.0 



Calcium nitrate 143.5 



Cottonseed meal 922.5 



Sulfate of potash-magnesia 233.9 



Sulfate of potash (high grade) 131.0 



Urea 72.5 



Nitrate of potash 166.1 



Precipitated bone 368.4 



Calurea 107.2 



Nitrate of Soda 92.4 



Equivalent to a 5-4-5 fertilizer 3000 3000 3500 3500 



1927 

 236 

 200 

 89 

 908 

 247 

 131 



1928 



1929 



1107.6 

 293.9 



173.7 

 350.0 



1930 



1107.6 

 293.9 



173.7 

 350.0 

 107.2 

 92.4 

 3500 



Table 11. — Soil reaction*, disease conhitioxs, Axn yield axd quality of 



TOBACCO IX 1926. 



pH values of soil 



Plot 



No. April* -Tune 5 Aug. 5 



Black 

 root -rot 



of 

 tobacco 



Length of tinia 

 Yields of Lights, leaves held fire 

 tobacco mediums. ■ 



per acre and seconds Seconds Darks 



Poiinds 



Per cent Seconds Seconds 



50 



21 

 36 



46 



39 

 39 



28 



30 



9.1 



10.0 

 7.3 



4.1 

 14.3 



6.3 

 7.9 



4.3 



8.0 



6.8 



4.4 

 6.0 



5.7 

 9.5 



5.1 



4.0 

 5.2 



4.9 

 9.5 



Before acidification. 



