Relations of Higher Plants to the FoRxMation of Nitrates 51 



TABLE 18 (continued) 



First eight inches (continued) 



Plat 



Crop 



o 



(N 



O 



2 



•s 

 a 

 < 



(N 



s 



O 



o 

 a 



3 



1-5 



o 



o 



3 



1 



3 

 < 



August 16 to 24 



_^ o 



< 



o 



"I 



a 

 m 



fi 



ll 



o 



2207, 2215 1 



2407, 2415 / 

 2208, 2216 I 



2408, 2416 / 



2208, 2216 \ 

 2408, 2416 / 



None 1 33.1 



Oats, followed by maize ! 33 . 



None 32.7 



19.0 

 15.3 

 20.4 



17.2 



7.8 



16.9 



17.5 

 11.7 

 17.8 



16.4 

 14.3 

 17.4 



24.3 

 24.5 

 25.7 



26.6 

 24.2 

 24.9 



25.5 

 26.4 

 26.6 



Second eight inches 



Plat 



Crop 



3 

 3 

 < 



< 



21.1 



19.1 



23.3 



18.9 



15.6 



19.2 



18.7 



21.2 



15.2 



17.8 



18.2 



20.5 



17.6 



21.6 



18.3 



20.8 



17.5 



21.2 



18.2 



23.2 



14.9 



21.0 



16.8 



22.1 



12.6 



19.6 



15.8 



20.5 



13.2 



20.2 



16.0 



21.2 



S o 



m 



2201,2209 

 2401,2409 

 2201,2209 



2401, 2409 



2202, 2210 ' 



2402. 2410 



2202. 2210 ' 



2402, 2410 



2203. 2211 ' 



2403. 2411 



2203, 2211 

 2403, 2411 



2204, 2212 

 2404, 2412 



2204, 2212 



2404, 2412 



2205, 2213 



2405, 2413 



2205. 2213 



2405, 2413 



2206. 2214 



2406, 2414 



2206. 2214 ' 



2406, 2414 



2207. 2215 

 2407, 2415 



2207. 2215 



2407, 2415 



2208. 2216 



2408, 2416 

 2208, 2216 

 2408, 2416 



Maize, mulched 



None 



Maize, scraped 



None 



Maize, cultivated 



None 



Maize, harvested August 1 . . . . 



None 



Maize, planted June 26, har- 

 vested August 1 



None 



Potatoes 



None 



Oats 



None 



Oats, followed by maize 



None 



26.6 

 26.6 

 25.4 

 25.6 

 22.8 

 28.5 

 27.4 

 25.0 



25.1 

 25.9 



25.8 



26.1 



25.8 



25.8 



25.7 



26.0 



21.7 

 21.4 

 20.9 

 22.0 

 19.3 

 20.4 

 18.9 

 18.2 



18.4 

 18.7 



18.0 



19.6 



18.0 



18.7 



15.4 



18.0 



19.0 

 19.9 

 16.6 

 17.0 

 18.9 

 20.8 

 19.2 

 20.2 



19.4 

 20.7 



17.5 



20.9 



10.9 



15.7 



11.4 



16.9 



18.3 

 20.9 

 15.9 

 17.9 

 15.3 

 18.0 

 16.8 

 18.0 



17.3 

 18.4 



15.2 



18.2 



11.9 



16.3 



11.8 



16.9 



22.6 

 22.9 

 19.0 

 20.2 

 19.5 

 20.8 

 19.7 

 19.8 



18.9 

 19.5 



18.4 



18.9 



21.1 



20.9 



19.3 



19.7 



22.7 

 23.6 

 21.7 

 23.7 

 21.2 

 21.9 

 21.9 

 21.4 



21.4 

 21.8 



21.4 



22.3 



21.0 



21.2 



22.1 



21 1 



