65 



Increase of seed cotton per acre when kainit was added: 



To unfertilized plot 172 Ibe. 



To cottonseed meal plot — 59 '" 



To acid phosphate plot — 118 '• 



To cottonseed meal and acid phos. plot. . . .107 " 



ATerage increase with kaiait 26 " 



Unfortunately at the date when the report was forwarded 

 to Auburn some cotton still remained unpicked on plots 1^ 

 2, 4 and 5, estimated roughly by the experimenter at about 

 10 pounds on each of these eighth-acre plots. The table 

 does not include the cotton on these four plots opening at 

 that late date. As recorded, the figures show that the 

 greatest increase in yield is attributed to acid phosphate. 

 Cottonseed meal increased the yield, in spite of the fact 

 that the preceding crop of cowpeas had already contributed 

 to the supply of nitrogen in the soil. Kainit was unprofita- 

 Me. 



This experiment by no means indicates that under nor- 

 mal weather conditions and on land not recently in cow- 

 peas acid phosphate and cottonseed meal could be used 

 singly to greater advantage than in combination. We 

 should expect a mixed fertilizer to give best results on this 

 pine woods land. 



Experiment Made by J. P. and J. C. Watkins, 2 Milks^ 

 North of Burnt Corn, Monroe County. 



Gray,, sandy and rocky soil ; red clay subsoil. 



The field on which this test was made had been in culti- 

 vation about thirty yeans. The original forest growth is re- 

 ported as pine, oak and sweetgum. No note is made of in- 

 jury from rust. 



