48 BULLETIN 1082, U. S. DEPARTMENT OF AGRICULTURE. 
The turn-off of bulbs from the acre in 1919 will be seen to total 
86,994. In 1920 the turn-off totaled 163,845 bulbs, but for certain 
reasons it was desirable in that year to get rid of as many bulbs of 
some varieties as possible. Consequently, all bulbs of these varieties 
that would flower were disposed of. Many of these bulbs were 
smaller than should have been sold for anything but planting stock. 
Of this latter class there were, as nearly as can be estimated, 58,720. 
Deducting this from the total, there is a net merchantable turn-off of 
105,125 bulbs from the acre in 1920. 
The yield in 1920 is further slightly augmented by the fact that 
there were planted on the acre about 10,000 bulbs of all sizes which 
had been used for bedding on the grounds of the Department of 
Agriculture at Washington, D. C, in the spring of 1919. These, while 
not normal for first-quality stock, nevertheless probably gave a greater 
proportion of merchantable bulbs in 1920 than the average run of the 
Bureau of Plant Industry planting stock. The reproduction in these 
stocks, however, was much below normal. These relations are well 
brought out in the narrow ratio between the number of bulbs planted 
and the number turned off as merchantable in some varieties in 
Table 7. In Wouwerman only 2,099 were planted and 1,900 were 
turned off. This may necessitate reducing the total turn-off to 
100,000. 
Table 7 contains lists of all the varieties grown on the tested acre 
of ground devoted to tulips each year. The blanks opposite the 
varieties in the "Marketed" column indicate in practically every 
case that all the stock was planted back in the autumn of 1920. The 
1919 list, as will be seen, is comparatively short in number of varieties 
and made up very largely of single earlies, which were the only stocks 
grown on the new place that year. 
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