42 



The Bulletin. 



Table IY— 

 AVERAGE RESULTS FOR 5 



♦Soil better than other plats; yields too high. 



Note.- — -The check for plat S, field A, has been obtained from plats 4 and 11; that for plat 

 10', field B, from plats o-and 14=; and for plat 63, field B, from plats 53 and 143. it has been 



EFFECT OF VARYING QUANTITIES OF POTASH. 



The experiments reported in Table IV were arranged to show the 

 effect on the yield of seed cotton of varying quantities of potash, the 

 nitrogen and phosphoric acid remaining constant. On one plat only 

 one-half the normal quantity of potash was applied, or I14 per cent 

 in the fertilizer mixture, or 5 pounds of potash per acre, while on two 

 other plats two and three times the normal quantities were given, or 

 20 and 30 pounds of actual potash per acre respectively. On basis 

 of the normal fertilizer mixture this would represent 5 and 7^ per 

 cent of potash in the mixture. 



Table V— RESULTS OF FERTILIZER EXPERIMENTS WITH COTTON ; 



RESULTS IN FIELD A 



Number 



of 



Plat. 



18 



20 



Fertilizer Application per Acre. 



Unfertilized= .0= . 



# 



38.5 pounds 13% blood=.. iN= 



100 pounds 14% acid phosphate= iP= 



25 pounds 20% manure salt^ iK= 



Yield of Seed 



Cotton in 



Pounds per 



Acre. 



1903. 1904. 



