293 



during 1881), togctlu'r ^^it^l saniples of ''tailings from (■(nicnitiatiiig iron 

 ore," flue dust from iron works, and tomato pomace, 



ExrEKIMENTS WITH NITKATE 0¥ 8()DA ON TOMATOES, E. !>. VOOE- 



IIEES, M. A. (pp. W2-V27).—A ro]nint of Bulletin No. (13 of the station 

 (see Experiment Station Eecord, ^ ol. i, p. 261). 



FlEf-T) EXPEKTMENTS WITH FEKTILTZETJS;, E. B. VOORIIEES, M. A. 



(pp. 127-1^3).— Fcrfi I izers on clover (pp. 128-132).— In 1882 a series of 

 experiments was commenced under tlie direction of the station on the 

 farm of Mr. A. P. Arnold, to determine (1) ^'tlie effect of barnyard 

 manure upon a rotation of crops compared with tlie effects of the leading 

 elements of plant food used separately and in combinations; (2) the 

 financial results which folloAV the use of commercial fertilizers," The 

 rotation consisted of corn, sweet potatoes, clover and millet, and clover. 

 The soil is described as "a very sandy loam, easily tilled, respouvsive to 

 fertilizers, and especially suitable for the cultivation of sweet j)otatoes, 

 berries, and small fruits." The experiment included 11 tenth-acre 

 plats, and has been continued each year uj) to 1889, when clover was the 

 crop raised. Each plat re(;eived the same treatment from year to year 

 except in 1889, when no fertilizers were applied on any of the plats. On 

 seven of the plats nitrate of soda, superph<)si)hate, and muriate of ])ot- 

 ash had been used singly, two by two, or all three combined; plaster 

 find barnyard manuie had each been applied on one plat; and two plats 

 had received no fertilizer during the 8 years. The yield of clover 

 in 1889, the value of each previous year's cro]>, the total valuer of the 

 crops for 8 years, and the cost of fertilizers during this tinu' are 

 tabulated for each of the eleven plats. The financial results for the 

 B years show that where nitrate of soda or superphosphate, alom^ or 

 combined, or plaster was used the total value of the crops, after deduct- 

 ing the cost of inamires, was less by from $11.96 to -124.04 per plat than 

 where no fertilizer was used. In the other cases there Avasa gain in net 

 value over the unfertilized plats varying from 163.52 to 1157.33 per plat, 

 the largest gain occurring where barnyard manure had been nsed. A 

 considerably larger amount of fertilizing ingredients was supplied by 

 the barnyard manure than by the complete fertilizer composed of nitrate 

 of soda, muriate of potash, and superphosphate. " While profit has 

 accrued from the continued nse of barnyard manure in large quantities, 

 the yields have not only not been in pro])ortion to those quantities, but 

 the ]»roiiortions of the elements removed in the crops have not been in 

 the i>ro] tortious in which they have been su])])lied in the manure." 



Fcriilizo's o)i pmcli trees (pp, 133-137). — This experiment has been in 

 l»rogress on the farm of Mr. S. C. Dayton since 1884, the fertilizers used 

 being the same as in the preceding series of experiments. The results 

 are talmlated for 1889, and com])ared with those in 1887 and 1888. '^Tlie 

 best yields secured in 1889 were from those plats u])on which potash 

 had been ap])lied, the highest yield, 166.7 baskets, being where a 

 mixture of potash and nitrate of soda Avas used. This result is, as Mr. 



