31 



Table XXIV. — Analyses of rice straw from plats with different amounts of CaCO^ 

 CROP G (25 DAYS' GROWTH). 



CROP B (.84 DAYS' GROWTH). 



4.84 

 5.82 

 10.20 

 12.04 



24.00, 0.31 



15.89| .34 



23. 46 . 27 



12. 70: . 18 



61.92 18.18 

 57.31 19.13 

 50.47| 16.61 



4.36 0.057 



3. 04 . 066 



3. 90 . 046 



2.14 .0.30 



11.26 

 10.96 

 8.38 

 8.54 



1.87 

 1.93 

 1.99 

 1.67 



CROPS C AND D (102 DAYS' GROWTH). 



14. 18 

 13.44 

 12.90 

 13.36 



7.61 

 6.72 

 7.13' 



CROPS E AND F (1'29 DAYS' GROWTH). 



19.28 

 24.03 

 23. 20 

 23.04 



1.54 

 1.91 

 1.83 

 1.63 



It is probable that of all the analyses that of crop G, grown 25 days, 

 gives the most accui-ate comparison of the effect of the carbonate of 

 lime on the mineral nutrition of the plant. As already mentioned, 

 the plants in the lime plats were somewhat slower m maturmg than 

 those in the check. Accordmgly the analyses of the 84, 102, and 129 

 day plants from the foiu- plats wotdd show variations in the ash com- 

 position that were induced partly by the chemical character of the 

 soil and partly by the stage of maturity. The analyses of crops B 

 and F also tend to show the ash composition of tlie normal or average 

 plant in Plat I and of the resistant individuals in Plats II to IV, for 

 in tlie lime plats the greater portion of the sample was afforded by the 

 few resistant individuals which grew weU; the plants which were 

 most affected died and did not appear in the sample. Sample G, 

 however, taken at 25 days, includes the less resistant plants and catches 

 them all at practically the same stage of matiu'ity and yet at a time 

 when their nutrition has been sufficiently disturbed to be manifest. 



