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— COMPARISON OP MULCHED AND SCRAPED PLATS — 



TABLE XXXXV SHOWING DEPARTURE PROM NORi:AL AS CALCULATED FROM 

 CHECKS, IN YIELD, AND MOISTURE, AND NITROGEN (NO3) content in 



SOIL 



Ends In Corn 



No. Treat- Moisture Jul. 9, 16 Aug. 5,19 Aug. 19 Aug. 5, 19 Aup-.19 

 Plat ment & Nitre- 24 & 50 26, Sep. 16 & 26 26,Sepl6 & 26 Yield 

 gen 



3 l.:ulched 



2 Scraped 



3 Mulched 



There was a greater difference between the moisture 

 of the ends and in the corn in the mulched than in the 

 scraped plats. There are many varying factors, among which 

 are evaporation and capillarity. 



The NO 2 where corn was growing, is much more abun- 

 dant in the scraped than in the mulched plat. Was this 

 due to the moisture in the soil not being sufficient to per- 

 mit sufficient growth to use the available nitrogen? 

 — VARIATIONS IN FERTILIZER CONSTITUENTS — 



(See Table XXX77 ) 

 The nitrates varied greatly. In general they 

 lowered with the moisture- This was very marked in plats 

 5 and 9 where the first sowing of "weeds" was made. In these 



