TABLE 4.-DRY HERBAGE YIELDS OF CARPET GRASS PER ACRE AS OBTAINED FROM HEAVY INFREQUENT AND LIGHT FREQUENT
 APPLICATIONS OF LIME, SUPERPHOSPHATE AND POTASH.


Fertilizer Treatment Pounds per Acre


 N POs5
Nitrogen Phosphoric
 Acid


 KO
Potash


Calcic Limestone


72 36 25 500

All applied annually 1937 through 1940


72 72 50 1,000


Nitrogen
Annually


 72

Nitrogen
Annually


Applied phosphorus, potash and
lime in 1937 and 1939


 144 100

Applied phosphorus, potash and
lime in 1937 only


2,000


 Pounds Dry Grass per Acre 2


1937 1938 1939 1940



2,880 3,540 3,320 3,200




2,090 3,060 3,230 3,100




2,150 3,180 3,310 3,090


 1 N-equivalent to 400 pounds per acre of a 50/50 mixture of nitrate of soda and sulfate of ammonia (200 pounds applied in March and August
annually). 36 pounds of POs is equivalent to 200 pounds of 18% superphosphate: 25 pounds of K20 is equivalent to 60 pounds of 50% muriate
of potash; calcic limestone (90% Ca COa).
 Treatments replicated 4 times on Leon and Plummer fine sand in Alachua County, and Bladen fine sand in Duval County.


Mean



3,085


2,870




2,930