:;i 



EXPERIMENT STATION RECORD. 



The experiments with sugar beets were made in glass cylinders 75 

 cm. high and 26 cm. diameter, cement-lined boxes of 1 cubic meter con- 

 ical, and zinc boxes with a surface of 0.3 square meter, the latter 

 being placed in the -round. There were six trials in the cylinders and 

 cement-lined boxes and five in the zinc boxes. In all cases the marsh 

 soil used in the trials received sulphate of potash at the rate of 267 

 lbs. and sodium nitrate at the rate of 22 lbs. per acre. The following- 

 table gives the average results of the experiments: 



The soil used in the first two series of experiments was extremely 

 deficient in available phosphoric acid, and in check experiments with- 

 out applications of phosphate no crop was produced. The check 

 experiments in the third series gave an average yield of 1,078 gm. of 

 beets, with 13.27 per cent or 143.1 gm. of sugar. The results of the 

 experiments show that Wiborgli phosphate is at least equal to Thomas 

 phosphate or superphosphate for the culture of sugar beets on marsh 



soils. — P. W. WOLL. 



The assimilation of nitric acid as well as the action of different 

 nitrates, W. Sciinkidewind (Jour. Landw., 46 (1898), No. 1,2 } P- IS). — 

 In experiments with sugar beets in 1894 and 1895, it was found that 

 nitrate of soda acted more quickly than nitrate of potash, a fact which 

 was attributed to the greater diffusibility of the sodium salt. Further 

 experiments with different nitrates were made with oats grown on arti- 

 ficial soil (sand with L'A per cent of peat) in pots in 189G. The nitrogen 

 was applied in the form of sodium, potassium, calcium, and magnesium 

 nitrates, in addition to the nitrates, calcium carbonate, potassium 

 phosphate, potassium sulphate, potassium chlorid, and magnesium sul- 

 phate were applied. The yield and analyses of the crop are tabulated. 

 The largest yield of grain and the smallest yield of straw was obtained 

 from the pot receiving magnesium nitrate. This is attributed to the 



