292 THE BOOK OF ALFALFA 



OKLAHOMA 



Agricultural experiment station: Bui. 71, by Prof. F. 

 C. Burtis and L. A. Moorhouse. — This crop is being 

 grown in every county in Oklahoma and in some sec- 

 tions, a fair acreage is present. From many fields as 

 large yields are obtained as are produced any place else 

 in the United States without irrigation. On the uplands 

 in Oklahoma, as elsewhere, the returns vary. Where the 

 subsoil is hard and impervious, the yields are quite mea- 

 ger under unfavorable climatic conditions and the crop 

 needs considerable nursing such as disking and har- 

 rowing, to keep the crab grass from taking the field in 

 a few years. On these upland soils with the hardpan 

 subsoils which grow cowpeas to perfection, the farmer 

 who is not willing to inform himself about proper 

 methods and to give his alfalfa fields much attention 

 and care, should grow cowpeas instead. But as has been 

 indicated before, alfalfa is being grown on such soil 

 successfully and profitably, but only in small areas. 



The soil of the experiment station farm at Stillwater, 

 on which the following yields of alfalfa were obtained 

 is a clay loam underlaid by a verv stiff, impervious sub- 

 soil of a hardpan nature. 



Yields of Field F, containing about four acres; cured 

 hay for the season. 



1 902- 1. 76 tons hay per acre in 5 cuttings. 



1 904- 1. 23 tons hay per acre in 5 cuttings. 



1904-3. 13 tons hay per acre in 4 cuttings. 



1905-3. 13 tons hay per acre in 5 cuttings. 



Average for four years, 2.31 tons of hay per acre. 



In the spring of 1904 the field received an applica- 



