10 



BULLETIN 564, U. S. DEPARTMENT OF AGRICULTURE. 



Turning to Table 6, which includes only the last three pickings, and 

 thus affords a comparison with the checks, it is interesting to note 

 that the checks yielded not quite three times as many fallen forms 

 as plat 1. In other words, bag-and-hoop pickings six times a week 

 secured only two-thirds of the squares due to fall and allowed one- 

 third to reach the ground. It will be noted that plat 6 yielded more 

 fallen forms than the checks. However, this is due to the fact that 

 the check record is an average of both checks and there was a slight 

 grading in the soil from east to west which caused the growth and 

 fruiting of check 1 to be more determinate than that of check 2. 

 This resulted in a much smaller number of squares forming in check 1 

 this late in the season and as a result this plat lowered the check 

 average. For this reason it is more accurate to compare plat 6 with 

 check 2 in these last three pickings, as these two plats adjoin. Com- 

 paring in this manner it is seen that plat 6 yielded a total of 13,235 

 fallen forms at the last three pickings while check 2 yielded 14,342. 

 This is a total reduction of only 1,107 fallen forms due to the once a 

 week shaking, or an average reduction of 369 per week. In this 

 connection it is interesting to note that the forms collected in the 

 bags from plat 6 during those same three weeks averaged 481 per 

 week. Totaling these figures it is seen that 14,677 forms were 

 collected in the bags and from the ground hi plat 6 during these three 

 weeks. This is 335 more than those found on the ground in check 2. 

 This difference in totals is practically accounted for by the fact that 

 290 clean forms were gathered in the bags on plat 6 during these 

 three pickings. 



In connection with these studies it is of interest to compare the total 

 forms gathered both in the bags and from the ground in each of these 

 plats. Table 7 shows these data for the picked plats, while Table 8 

 shows only the final three weeks in order to afford a comparison with 

 the checks. 



Table 7.- 



■ Total forms collected in picked plats throughout season, Eureka plantation, 

 Tallulah, La., 1916. 



Mode of collection. 



Forms collected. 



Plat 1. 



Plat 2. 



Plat 3. 



Plat 4. 



Plat 5. 



Plat 6. 





7,015 

 6,776 



6,380 



8,678 



6,068 

 8,469 



4,239 

 10,280 



3,166 

 10, 802 



2,173 





19,397 







Total 



13, 791 



15,058 



14,537 



14,519 



13, 968 



21,570 











