EFFECT OF LIME UPON 



AVAILABILITY OF SOIL CONSTITUENTS. 63 





Water 



Soluble 



! — (a) Phosphoric acid P 2 6 . 







Original. 



Standing 

 1 month. 



Mean. 



Limed 

 1 month. 



Mean. 



Increase. 



Sand 



•0019 



•0006 

 •0007 



•0007 



•0029 

 •0037 



•0033 



•0026 



Loam 



•0026 



•0004 

 •0006 



•0005 



•0022 

 •0025 



•0024 



•0019 



Clay 



•0027 



•0008 

 •0007 



•0008 



'0019 

 •0018 



•0019 



•0011 







(b) Potash K 2 0. 







Sand 



•0027 



•0018 

 •0019 



•0019 



•0038 

 •0039 



•0039 



•0020 



Loam 



•0061 



•0045 

 •0043 



•0044 



•0048 

 •0046 



•0047 



•0003 



Clay 



•0057 



•0007 

 •0009 



•0008 



•0038 

 •0030 



•0034 



•0026 





Citric 



Soluble, 



. — (a) Phosphoric acid P 2 5 . 





Original. 



Standing 

 1 month.. 



Mean. 



Limed M Meai 

 1 month. 1Viean - Increase. 



i 



Decrease. 



Sand 



•0317 



•0315 

 •0302 



•0309 



•0315 '0312 

 •0308 



•0003 



... 



Loam 



•1674 



•I860 

 •1770 



•1815 



•1802 -1792 

 •1782 





•0023 



Clay 



•0405 



•0423 

 •0422 



•0426 



•0210 -0241 

 •0272 





•0185 







(b) Potash K 2 0. 







Sand 



•0055 



•0074 

 •0067 



•0071 



•0087 -0081 

 •0074 



•0010 





Loam 



•0254 



•0196 

 •0190 



•0193 



•0221 *0221 

 •0221 



•0028 





Clay 



•0115 



•0113 

 •0113 



•0113 



•0118 '0114 

 •0110 



•0001 





The analyses were made in all cases on the air-dried 

 soils. The moisture was determined in each case in order 

 to apply corrections if necessary. No corrections were 

 made as the water-contents were fairly constant, but the 

 figures are given below : — 



Moisture Content of Soils. 



Original. Standing 1 month. Limed 1 month. 



Clay 6*36 ... 8*07 ... 8'94 



Loam ... 3*99 ... 2*02 ... 2*89 

 Sand 1*69 ... *19 ... -26 



