ABSTRACTS OF PUBLICATIONS OF THE AGRICDLTURAL EXPERIMENT STATIONS IN 



THE UNITED STATES. 



Alabama College Station, Bulletin No. 23 (New Series), February, 1891 (pp. 64). 



Co-operative soil tests with fertilizers, J. S. Newman (pp. 3- 

 61). — A report is given of 24 co-operative tests of fertilizers with cot- 

 ton on typical soils in 22 counties of the State. The general plan of 

 the experiment was as given in Bulletin No. 12 (new series) of the 

 station (See Experiment Station Record, Vol. II, p. 9), and was closely 

 followed in nearly every case. The land selected proved in most cases 

 to be well adapted to the test, in some cases beiag unusually even in 

 fertility. On 12 fifteenth-acre plats sulphate of ammonia, dissolved 

 bone-black, and kainit were each used singly, two by two, and all 

 three together; floats, green cotton-seed, and stable manure were each 

 used alone ; and floats were also used in combination with green cotton 

 seed or with sulphate of ammonia. Three plats received no manure. 



Data relative to the yield of cotton at each picking and the total 

 yield for each j^lat, together with field notes on the growth and appear- 

 ance of the crop, are tabulated for each experiment. The results were 

 quite pronounced in favor of the use of special fertilizers in about one 

 third of the trials, and in several others they were suggestive. Thus, 

 on eight fields the indications were that nitrogen and phosphoric acid 

 were the elements most needed for the production of cotton ; on two, 

 phosphoric acid alone; on two, potash and nitrogen; and on four, all 

 three elements. 



For comparison, the results are given of the experiment at the 

 college on the same plan, reported in Bulletin No. 22 of the station 

 (See Experiment Station Record, Vol. II, p. 548). 



Considerable interest in the experiments is reported to have prevailed 

 among the farmers throughout the counties in which they were made. 



A list is giv^eu of the 42 farmers taking part in the ca operative 

 experiments in 1891, brief notes on the soils represented, and directions 

 for carrying out the tests. 



Report of the Alabama weather service for January, 

 1891, P. H. Mell, Ph. D., and J. M. Quarles (pp. 62-64).— Notes 

 on the weather, and a tabulated monthly summary of meteorological 

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