Lowlands. ? 0< l for 



_, Plants 



beason. 



1905. No Nitrate 6985 Ibs. 200 Ibs. Nitrate 8712 Ibs. I0 9 



1906. No Nitrate 5920 Ibs. 112 Ibs. Nitrate 8080 Ibs. 

 Yield of original "No Nitrate" hollow square plot 



in field of timothy and red top : 



Season of 19053180 Ibs. 

 Season of 19061760 Ibs. 



The yields are lower for 1906 than for 1905 owing to 

 smaller applications of Nitrate and probably also to the 

 fact that there was much less rainfall during the growing 

 season. 



Experiments with Nitrate of Soda 

 on Oats and Peas for Hay. 



Highlands Farms, 1907. 



The original purpose of this experiment was to 

 study the effect of the application of different quantities 

 of Nitrate of Soda upon the yield of oats and peas as a 

 preparatory crop for seeding the land to permanent 

 meadows. The character of the soil has already been 

 described on previous pages; it is not rich in humus, 

 and thus not highly productive, without the application 

 of manures or of Nitrogen in some soluble form. The 

 location is such as to furnish excellent natural drainage, 

 and to enable the land to be rapidly improved by proper 

 methods of culture and fertilization. Since the land was 

 intended to serve as an experimental field for the grow- 

 ing of hay, it was well supplied at time of seeding with 

 the mineral elements, viz.: 500 pounds per acre of an 

 even mixture of ground bone, acid phosphate and sul- 

 phate of potash; this was applied broadcast, and har- 

 rowed in previous to seeding the oats and peas. The 

 land was thoroughly prepared early in the spring, 

 though owing to the lateness of the season the planting 

 was not made until May 1. 



The plots were one-tenth of an acre in area, long 

 and narrow, and each plot separated from the other by 



