54 



T. Lyttleton Lyon and James A. Bizzell 



TABLE 19 {continued) 

 (See tables 1,5, 6,7,8) 



Average of first and second eight inches 



Plat 



Crop 



^/2 

 TO E 



-5S 



2201, 2209, 2401, 2409 



2202, 2210, 2402, 2410 



2203, 2211, 2403, 2411 



2204, 2212, 2404, 2412 



2205, 2213, 2405, 2413 



2206, 2214, 2406, 2414 



2207, 2215, 2407, 2415 



2208, 2216, 2408, 2416 



ISIaize, mulched 



Maize, scraped 



Maize, cultivated. . . . 



Maize, harvested Au- 

 gust 1 



Maize, planted June 

 26, harvested Au- 

 gust 1 



Potatoes 



Oats 



Oats, followed by 

 maize 



104 

 128 

 113 



104 



85 



107 



75 



85 



112 

 100 

 105 



93 



65 



106 



57 



72 



102 

 37 

 12 



75 

 21 

 39 



65 



92 

 32 

 22 



23 



The analyses of April 19 to 26 were all made before any of the crops 

 were planted, and therefore they represent the natural relation of the 

 respective sections of the plats when uninfluenced by plants. In the 

 maize plats there is a tendency for the nitrates under the crop to increase 

 sometime during the growing season in the scraped plat and in the two 

 plats harvested August 1. The other two maize plats do not show this 

 tendency. 



As has been remarked before, there appears to be a relation between 

 the size of the crop and the tendencj' of the nitrates to increase during 

 the active gro^^dng season. It is impossible to compare the ^delds on the 

 early-harvested plats with those on the other plats, but of the late-harvested 

 plats those that increased in nitrates during the earlj- part of the growing 

 season were the ones that yielded least — namely, the scraped plats 2202, 

 2210, 2402, 2410. The yields of these plats are stated in Table 20: 



TABLE 20. Yields of Maize (Grain and Fodder) on Plats Harvested at Maturity 



Plat 



Treatment 



Weight 

 of crop 

 (grams 

 per plat) 



Nitrogen 

 in crop 

 (grams 

 per plat) 



2201 2209 2401 2409 



Mulched 



Scraped 



Cultivated 



16,457 

 13,369 

 17; 425 



123 



2202 2210 2402, 2410 



98 



2203 2211, 2403, 2411 



135 







