394 



on account of heavy rains." Tlie yields are tabulated for racli plat 

 and each subplat. 



[Cousidering first the total yield of barley and peas for each plat] the hi^lirst 

 yield is given here with stable manure. Then follows the plat to whirh the 

 fine-ground South Carolina rock was ajtplied. Next in order conies the plat 

 receiving acid South Carolina ro<k, whilathe lowest in the scale is the unnianuri'd 

 l>lat. • * •• Plats 2 and .3 were treated alike as to fertilizers, excepting in the 

 amount and condition «)f jdio.sjdioric acid. Plat 2 received about 2(I0 jtounds of 

 insoluble ]tlio.sphoric acid prr acre, while plat 3 receiveil 70 pounds of soluble phos- 

 phoric acid jier acre. It would semi from those results that [in this season] the 2CH) 

 pounds of insoluble phosjdiorie arid was more effective in i>roducing an increase in 

 the total weight of the crop than the 70 jxiiinds of soluble phosjdioric.acid. 



The yield per acre of barh'v and tlu' - varirti* ^ of peas is given as 

 follows: 



Yield of barley and peas per acre icilh different fcrlilizcra. 



In whatever light the figures be examined we can but come to the conclusion that 

 the ground South ('arolina roik has assisteil in incre.ai^ing the crop of barley to an 

 ext^-nt nearly equal to, if not great«!r than acid Soutlj Candina r«ick. • • • 



Under tlie conditions of this experiment the growing of pciis for stock purposes is 

 to.be preferred to growing barley. Tlie lJIack-Kye<l Marrowfat pea yields double the 

 amount of the Canada pea. 



Fertilizer experimentn by farmers (pj). !K»-10l), — Experiments were <ar- 

 rieil on by two fanners to coni[>art' the rlfects of South Carolina rock, 

 both dissolved and liiicly ;;nnuul, with thoso of Tiionias .slajjwheii nsj-d 

 alone or in j-onibination with l."»U pounds of nitrate of soda and 1(M> 

 l)ounds of muriat*' of p.itash per arre. On*' thousand pounds of Thomas 

 sla.LT and .")(>() jmuutls of dis.solved or 1,(100 i>ounds of linr jjround rm'k 

 ])hosi»hate per acre were u.sed. One plat received in addition to the 

 <rronn<l rock i)hosph:itc "an amount of free lime [L'OO jMumds per acrej 

 etjual to that contain«'d in the Tinnnas sla^^j." The fertilizers were fnr- 

 iiished by the station. Each experiment wasS on t^nth-acre plats. Tlie 

 soil of one f;irm was ''a heavy, rocky loam, with yellow subsoil and a 

 hardpan from 2.^ to 3 feet below the surface," Corn was the «roi» ^'rown 

 in 4his case, and on the other farm, the soil of which is not described. 

 l)otatoes were {irown. 



[In the former case] slightly more corn was jiroduced with Thomas slag than with 

 acid South Carolina roi k. The exi>crimeut gives no evidence that the suj>erior eflect 

 of tlie Tliomas slag over (ine-grouiul South Carolina rock is duo to the free lime con- 

 tained in the slag. 



