with the back of a spade or shovel, or by a hand grind- 

 ing machine made especially for home mixing, which 

 is now in common use in Europe and is beginning to be 

 used in America. 



Nitrate of Soda, unlike other ammoniates and 

 "complete fertilizers," can be mixed with lime or ashes 

 without loss of Nitrogen. 



The fallow in modern agriculture, S. Rhodin (K. 

 Landtbr. Akad. Handl. och Tidskr., 45 (1906), No. 1, 

 57-72, fig. 1). — The evidence and views in regard to the 

 value of bare fallow, especially in Swedish agriculture, 

 are briefly discussed. While bare fallow of loose sandy 

 soils is not to be recommended, because the losses of 

 Nitrogenous substances occurring, generally speaking, 

 exceed the gains through Nitration, this is not the case 

 with other types of soils. Here an accumulation of 

 Nitrates takes place through the fallow, which greatly 

 benefits the following grain crop. 



Field experiments with cabbages in 1903 and with 

 potatoes in 1904 and 1905 were conducted for the pur- 

 pose of determining whether inoculation of sandy soils 

 with fallow soil would prove beneficial on account of 

 the large bacterial content of the latter. The systems of 

 fertilization followed are shown below, the different plats 

 receiving as a basal fertilizer 37 per cent, potash salt and 

 Thomas phosphate, at the rate of 225 to 400 lbs. per 

 acre, respectively. The Nitrate of Soda was applied at 

 the rate of 300 lbs. per hectare (121 lbs. per acre) and the 

 inoculated soil at the rate of 6 cubic yards per hectare. 



Yields per Acre and Percentage Increase of Crops on Inoculated 

 and Uninoculated Gravelly Soil. 



Food for 

 Plants 



217 



No fertilizer 



Potassium phosphate 



Potassium phosphate 

 + soil from bean 

 field 



Potassium phosphate 

 + soil from fallow 

 field. 



Potassium phosphate 

 -f- Nitrate of Soda. 



Cabbages, 1903. 



Pounds 



8,906.88 



24,582.99 



24,939.27 



33,222.67 

 60,834.00 



Per cent. 



36 



100 



101 



135 

 250 



Potatoes, 1904. 



Pounds 



6,791.49 

 17,368.42 



20,819.84 



23,046.56 

 30,172.06 



Per cent. 



39 



100 



120 



132 

 173 



Potatoes, 1905. 



Pounds 



9,908.90 



15,809.72 



20,485.83 



18,370.44 

 23,046.56 



Per cent. 



62 



100 



130 



116 

 145 



