The Bulletin 



47 



rotation was identical for botli except that rye was substituted in this 

 i5eld for crimson clover in seeding the cotton plats during the fall of 

 1911. The growth of the cowpeas generally was better on the plats of 

 this field not receiving blood in the fertilizer application. The plats 

 receiving blood were generally covered with a growth of crab grass. 

 This grass was hardly apparent on the plats from which the nitrogen 

 application was omitted. The possible explanation for this condition 

 was that the rank growth of grass which was favored by the liberal 



Fig. I. Showing- the growth of corn in 1910 on Plats 12 (NPK) and 13 (O) of Charlotte 

 Field No. 2. The marked difference in growth on Plat 12, receiving a complete fer- 

 tilizer, over Plat 13, to which no fertilizer was applied, was due largely to the nitrogen/ 

 in the fertilizer mixture. 



use of dried blood held in check the cowpeas in their growth. Then 

 again, too, the ranker growth of com on those plats receiving the nitro- 

 gen carrier did undoubtedly affect the growth of the peas. 



The stand of rye in 1911 was good on all the plats, but made decidedly 

 the best growth on those plats receiving an application of blood. The 

 rankest growth was made on plats 8, 9, 12 and 14. The stand of crim- 

 son clover in the spring of 1914 was poor over all the plats, it not being 

 over 40 per cent on March 21. The growth of the clover was slightly 

 better on the nitrogen plats than on any of the others, the poorest 

 growth of all being made on plat 13, The following table gives the fer- 

 tilizer treatment, and results recorded on this field. 



