68 T. Lyttleton Lyon and James A. Bizzell 



1915 the annual loss of potash (KoO) in drainasc water was as follows: 

 238 pounds per acre from tank 1; 281 pounds from tank 2; 218 pounds 

 from tank 3; and 141 pounds from tank 4. Apparently the sulfate of 

 ammonia favored a larger removal of potash than did the nitrate of soda, 

 and the latter in turn favored a larger removal than did dried blood. The 

 removal of potash in the drainage water increased rapidly each year 

 of the experiment, indicating that the soil used had very little retentivity 

 for potassium. 



Lysimeter experiments at the Hawaiian Sugar Planters' Experiment 

 Station were conducted by Peck (1911), who used small vessels 8 inches 

 in diameter and 2 feet in depth. Two soils were used, both of which 

 were sandy loams. One, an upland soil, was acid to litmus; the other, 

 from lowland, was alkaline to litmus. To one set of vessels lime was 

 applied in the forms of oxide, carbonate, and sulfate, a sufficient quantity 

 of each being used to supply calcium oxide (CaO) at the rate of one 

 ton to the acre foot. The soils were kept free of vegetation. The tanks 

 were irrigated with distilled water at intervals of two weeks, and ten 

 irrigations were given, amounting in all to about 23 acre inches. The 

 drainage water from these vessels contained the following quantities of 

 hme (CaO) and potash (KoO): 



The effect of all the lime applications was to increase the quantity of 

 calcium and of potassium in the drainage water. Gypsum was very 

 active in this respect. Ammonium sulfate was applied to some vessels 

 and this also increased the quantities of both calcium and potassium 

 in the drainage water. 



Fraps (1914) conducted experiments at the Texas Experiment Station 

 in which he used lysimeters 12 inches in diameter and 24 inches deep. 

 These were divided into eight sets of six vessels each, and the vessels 



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