320 



Rtoiilizcd cultnios for the prevention of tliediseaso. and notes on South- 

 ern cattle phi^iie. 



Field experiments, J. M. McBryde, Ph. I), (pp. 193-344).— The 

 probable errors in plat experiments are discussed, and a description 

 is jiiven of the tield experiments with oats, wheat, corn, cotton, and 

 miscellaneous crops made during- isso at the experimental farms at 

 Columbia, Spartanburg, and Darlington. Except in cases specified 

 her«'inafter, the experiments were duplicated on the three farms. The 

 experiments are in many instances in continuation of those reported 

 in liulletin No. 5 (new series) and in the Annual Keport of the station 

 for 1888 (see Experiment Station liecord, vol. i, p. 146, aud Experi- 

 ment Station r.iillctin No. 2, i>art 2, j). U2). In the majority of cases 

 twcntictii acre jilats were used. 



ExperimcnU icith oats (i)p. 108-200). — These consist of ex]»eriments 

 with fertilizers for oats and variety lests, and were made at all three 

 farms. "On account of the unfaxorable s«'as<ui, and especially of the 

 prolonged .si)ring drouth, the crop at all three farms was almost a total 

 failure." The croi)S at Columbia were destroyed by fire a few days 

 after harvesting. Tin- results obtained at the other two farms are 

 tabulated "in order to jireserve the records of our tests." 



Expirhncnts irith wheat (i)p. 2(Ki-2(tn). — Tliesi' were confined exclu- 

 sively to the Spaitanburg farm, aud were a continuation of those ot 

 th<' ]»i('vi<»us year, /. c. t«*sts of fertilizers and of varieties. The data 

 for ISSS and 1.SS!> are tabulated. As mentioned above "the season 

 was unfavoral>h' to small giaiu." hut the jtoiuts noticed in the fertilizer 

 tests of the 2 years are given as follows: 



(1) The separate a])]ilifatiniis of potash, iiitrojjon, etc., wore without offect. 



(2) Tlu> value of tlie potash w.is nmiparatively sli-ilit. 



(3> Phosjihoric acid was of inarkiMl Ix-iii-tit to the (To]»; wlien used with the other 

 < oiiKtitiieiits it waselearly the most iiniiortant or doniiiiaiit element. 



(4) Nitrojieii in eonihination added larj^ely to the yield. 



(.^) The half amount or dose of nitroiren was by no means as eflfective as the full 

 amount fealeulated amount contained in a crop of .")0 liushels of jjrain per acre]. 



(G) The mixed nitro<jen [three fourths nitrate of soda and one fourth cotton-seed 

 meal] j^ave mu<li the best results. The land was vi-ry thiu and hence the soil was 

 delicient in nitro^ien. On account of the absence of this element during the winter 

 the lirowtli of the plants on the other iilats was feeble and slow. The addition of 

 some nitro>;en in the shajie of cotton-seed meal in the fall fjreatly improved the 

 •growth dininj; the winter and early spring;, anil the superiority thus secured w.as 

 maiutaiuid to tin- end. 



In t lie variety t<>st, as in 1888, " the South Carolina-grown wheats 

 (lied May and Fultz) gave better returns thau the Virginia grown." 



hJ.rjh'riiiioifs irith corn (pp. 21()-2<!S). — " The «'XiM'rim('nts with corn 

 begun in 1888 were continued in 1889 at all three farms, aud included 

 tests ol fertilizers (in general), nitrogenous manures, ]>hosphatic manures, 

 modes of ai>i)lying fertilizers, modes of ])lanting, nntdes of cultivation, 

 varieties, and nttations. The season of 1SS!» was very favorabh' for corn, 

 aud excellent crop* were harvested throughout the State." 



