172 



STATE AGRICULTURAL COLLEGE BULLETINS. 



The table shows a gradual increase in yield toward the large whole 

 with the single exception of the "half medium''' which gave a very small 

 yield. The results corroborate those of preceding experiments. 



"Comparing whole tubers with halves from wholes of the same weight. 

 This experiment had to objects, (a) To note the difference in yield 

 between a certain number of tubers of the same size, planted whole, and 

 twice that number of halves from potatoes of the same size as 

 the wholes, (b) To note if the eyes on the under side of a whole potato, 

 materially increase the yield over the half potato, planted with the eyes 

 facing outward or upward. 



" Five hundred and forty Early Rose potatoes, each of which weighed 

 67 ounces, were divided into lots of 270 each. Lot I, the wholes were planted 

 in three rows, there being 90 tubers to the row, each baing 18 inches 

 apart in the row, and the rows 3^ feet apart. Lot II, thus contained 540 

 half tubers. As arranged, lot II contained the same weight of potato, and 

 number of eyes, as did lot 1 (twice as many rows, as will be seen by the 

 table). Both lots lots were planted alike, and each received the same 

 treatment. Lot II occupied six rows, and the halves were placed with the 

 cut side under. No fertilizer was used. All of the plats vegetated and 

 bloomed at the same time. In five out of the nine rows, a very few hills 

 produced no potatoes. Table 36, which contains the yields, brings out 

 the comparative difference sought for. Since the tables contain nearly 

 5,000 weights and numbers, as in the preceding cases, only totals and 

 average of the whole are given." 



Table XXXVI. — Comparative yields of whole vs. half potatoes. 



" Table is interesting as demonstrating, as far as this experiment goes, 

 the following facts. These are clearly shown in the heavy black figures in 

 the table. 



"(a). The half tiibere produced a greater number and greater weight 

 of merchantable potatoes, per hill, than did the whole tubers. 



"(6), The whole tubers produced very nearly twice as many unmer- 

 chantable tubers, per hill, as did the half tubers. 



" (c). The average weight of one hill grown from a whole tuber was 



