43 



Experiment Conducted by the Sixth Distiuct Agricul- 

 tural School at Hamilton, Marion County^ in 1903. 



Soil dark loam ivith light red s.ulj&oil. 



This upland soil had been cleared many years, then 

 thrown out of cultivation, and again taken into cultivatioQ ' 

 five years before the test began. 



On plots 7, 9 and 10 the stand was imperfect. The largest 

 yield was made with the complete fertilizer, but potash was 

 less needful than either cotton seed meal or phosphate. 



The largest net profit, on plot 9, was f3.46. 



Increase of seed cotton per acre when cotton seed meal was added ^ 



To unfertilized plot 155 lbs. 



To acid phosphate plot '. 90 lbs. 



To kainit plot 240 lbs. 



To acid phosphate and kainit plot 170 lbs. 



Average increase with cotton seed meal 163 lbs. 



Increase of seed cotton per acre when acid phosphate was added .^ 



To unfertilized plot 190 lbs. 



To cotton seed meal plot ;..125 lbs. 



To kainit plot 210 lbs. 



To cotton seed meal and kainit plot 140 lbs. 



Average increase with acid phosphate 166 lbs. 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 10 lbs. 



To cotton seed meal plot 95 lbs. 



To acid phosphate plot 30 lbs. 



To cotton seed meal and acid phosphate plot.. 110 lbs. 



Average increase with kainit ••• 61 lbs. 



