168 



tLe main wheat crop, Fiiltz, in the same field with the varieties, gave a yield of over 

 35 bushels per acre, and in 1891 the remainder of the field where the varieties were 

 grown yielded slightly over 30 bushels. From this it will be seen that our determi- 

 nation of yield per acre for a small area is not Avide of the truth. There appears to be 

 no direct relation between the proportion of straw down at harvest and tlie yield. 

 Fultz gave a good though not the best yield. A further trial of the varieties lead- 

 ing in yield in 1891 will be necessary before their general adoption will be advi.sabb'. 

 In the comparative test of varieties of oats Pringle Progress gave the largest yield 

 in both 1889 and 1891, though in weight per measured bushel it was among the lowest. 



Change of seed of aviieat, oats, and potatoes, H. J. Wateks 

 (pp. 11-lG). — Descriptive notes and tabulated data for an experiment 

 planned with reference to comparing the results of planting !N^orthern 

 and Southern-grown seed. 



New Jersey Stations, Bulletin No. 81, July 1, 1891 (pp. 15). 



Incomplete fertilizeks and uo.aie :mixtukes, E. B. Vookuees, 

 M. A. — Analyses are given of sixty-three samples of fertilizing raate- 

 riiils, including nitr;it«' of so<l;i. suli>liatc of ammonia, dried Idood. l)oi«i'- 

 black, bone asli, rock itlmspliates, muriate of potash, sulphate of jxitash, 

 double sulphate of jtotiish mid magnesia, kainit, and home mixtures; 

 the schedule of trade vidiies adopted for ISDl by the Xew Jersey, Con- 

 necticut, and ^lassaehusetts 8tati<tns: a table comparing the average 

 cost of essential ingredients at the retail prices of the raw uuiterials, 

 with the station schedule; and formulas for home mixtures for general 

 erops, for ]>otatocs, and for peach trees. The comparison of the cost 

 per i>ound of nitrogen, i)lios]>lM»ric acid, and potash at the prevailing 

 retail prices of raw materials with the schedule of trade values adojited 

 for 1801 revealed the fact that " the station's schedule agrees ch)sely 

 with the manufacturers' averages for nitrogen and potash, wliile in the 

 case of available jthosphoric acid the station's prices are over !'(» per 

 cent greater than the prices at which it has been bought by farmers 

 direct from the manufacturers." 



The analyses of the Inune mixtures, which had been made according 

 to fonnulas furnished, showed a very close agreement between the per- 

 ct'utage of ingredients as calculated from the formulas and that actimlly 

 found in the mixtures. 



The main objects of the analyses were to determine, (1) whether farmers, using 

 the ordinary tools and labor of the farm, could make even mixtures of the materials 

 used; and (2) whether in the cost of actual plant food, home mixing presented an> 

 advantagesover the usual method of buying manufactured fertilizers. * * * Tlit- 

 mixtiu-es do contain practically the amount and proportion of plant food that they 

 were intended to furnish, and therefore show that farmers are able to make even 

 mixtures of such raw materials as the market aft'<uds. 



[Concerning the pcrnniary results] the station's valuation of the home mixtures i>. 

 $2.92 greater than their cost. This represents the total saving only when the station- 

 valuation of manufactured brands is equal to their selling price at the point of cou- 

 BUini>tion. 



