FIELD CBOP8. 235 



fcanure per acre. The importance of a liberal Biipply of potash in fertilizers forcorn 

 \s pointed oul bj these results. 



[n the soil tests with grass and clover aitrate of soda, either alone or in combina- 

 tion, gave a large increase in the firsl crop. Potash \\ ithoul lime had bui little effect, 

 fhe use of potash continuously for 15 years, with a ton of lime per acre in 1899 and 

 ptoi, produced a marked effecl on the proportion of clover and also on the total yield. 

 The plat receiving dissolved boneblack and muriate of potash continuously produced 

 the most profitable crop. The annual cosl of fertilizers for the limed portion of this 

 plal was aboul $7.50 per acre, and the yield of hay was 6,160 lbs. 



This year the yields obtained where a fertilizer mixture rich in potash and a special 

 lorn fertilizer were used were practically equal, bu1 the cosl of production with the 

 mixture rich in potash was a little over $5 per acre less than with the special corn 

 fertilizer, in comparing the value in corn production of a moderate application of 

 barnyard manure alone and of a .-mail application used in connection with the appli- 

 cation of sulphate of potash, the crops obtained under the 2 systems were equal in 

 amount of stover, but the plats receiving manure alone gave an average of aboul 5 

 hu. of grain per acre more than the combination of manure and potash. The use of 

 barnyard manure alone, however, proved the more economical. 



On the grass lands receiving differenl fertilizer treatmenl in rotation, the average 

 yield of hay was at the rate of 8,050 lbs. per acre for all 3 systems of manuring. The 

 Average yield in this test from 1893 to L904, inclusive, was 6,718 Lbs. 



Spreading barnyard manure as hauled from the stable during winter was again 

 compared with placing it in a large heap to he spread in spring. In •"> oul of 

 the results were in favor of the winter application, hut the difference in yield was 

 insufficient to cover the difference in the cosl of hauling, which amounted to $4.80 

 per acre. An application of nitrate of soda after harvesting the first crop of u r rass did 

 ii, ,t sufficiently increase the crop of rowen to make the practice profitable, possibly 

 on account of a somewhat deficient rainfall. 



The 4!) varieties of potato.- under test ranged in yield from L04 hu. of merchantable 

 potatoes per acre for the Clinton to 319 bu. per acre for Simmon Model. Given in 

 the order of productiveness, the following varieties yielded over 260 bu. per acre: 

 Simmon Model, Extra Early White Rose. < rreat Divide, Steuben, 1904, and Mills New 

 Rose Beauty. 



Field experiments for 1903, \V. K. Perkins (Mississippi Sta. Rpt. t904, />/'■ 

 .—This is a report on the plat experiments conducted during the year. 



( >f 1l' varieties of cotton the l' leading were Edgworth and Prize, yielding 1,920 and 

 1,895 lbs. of seed cotton per acre, respectively, while Garrard Prolific ami King 

 Improved, standing at the foot of the li-t. produced, respectively. 1,382 and 1,505 

 II.-. per acre. As in previous years, the use of different fertilizers had hut little effect. 

 No rust appeared in the cotton this season, which is thought to he due to the good 

 preparation of the soil ami abundant moisture throughout the entire season. 



Twelve varieties of com were under test and the - leading varieties, Southern Snow- 

 lake and Mosby, yielded 75.1 and 7:; hu. per acre, respectively; while of the 2 least 

 productive varieties, Blount Prolific yielded 26.7 and Champion Early White Dent 



42. ti bu. per acre. The use of fertilizers showed no appreciable increase in yield 

 except w here 2 applications of nitrate of soda were made. 



A plat of wheat treated with 1l'!> lbs. of nitrate of soda per acre yielded L,948 lbs. 

 of hay per acre, as compared with 948 lbs. on the check plat. Four plats of oats, 



receiving hut lbs. of nitrate per acre, gave an average yield of 2,325 lbs. of hay, while 

 2 check plats yielded 1,437 ll»>. per acre. Nine varieties of wheat ranged in yield 



from :; to lo hu. per acre, and duplicate plats produced from 2,800 to 1,000 lbs. of 



hay per acre. 



Fourteen varieties of cowpeas varied in yield of seed from zero to i:> hu. per acre, 

 Whip-poor-will being the leading variety. The same varieties following wheat on 



