- 23 - 
Avocado 
Stout, A. B. 
1933. The pollination of avocados. Fla. Agr. Expt. Sta. Bui. 257, 
44 pp. 
p. 42: It is without doubt advisable (1) to interplant avocados 
on the basis of the;u flower behavior (2) to supply bees in abundance 
to effect pollination . 
Traub, H. P.. Pomeroy, C. S., Robinson, T. P., and Aldrich, W. W. 
1941. Avocado production in the United States. U. S. Dept. Agr. Cir. 
620, 28 pp. 
p. 3: With some varieties, as Fuerte, there is sufficient 
overlap of the two sets of flowers to render them self-fertile; with 
o^yier >j&r4%tjies, ". siu'i'Lcient percent-; ■ single-cycle flowers 
(completing their anthesis in one op : are p render 
self-pel ination easy of accomplishment, the only requ i rement in each 
case being the activity of bees or other insects ... 
Keeping bees in or about the orchard is also co nsidered a wise 
larovis U n during; the blooming pe riod . Observa ti ons indic a te that pol - 
len is carried c onsiderable distances by bees and doubtless by other 
flying insects. 
Blackberry 
Darrow, G. M. 
1937. Blackberry and raspberry improvement. U.S. Dept. Agr. Yearbook 
1937: 496-533. 
p. 498: Normally the wild blackberries of the East are entirely 
or nearly self- sterile, and those of the Pacific coast have male and 
ale organs on separate plants. All need cross_-pollination. In the 
clearings and pastures bees and other insects have . cro ssed the black - 
berry species for the last 100 to 300 years. 
Blueberry and Huckleberry 
Merrill. T. A. f 
1936. Pollination of the highbush blueberry. Lch. Agr. Expt. Sta. 
Tech. Bui. 151, 34 pp. 
p. 33: Of much greater importance than self or cross-pollina- 
tion, though it receives little space in this report, is the need of 
insuring some (any) sort of pollination. Mechanical aid is absolutely 
necessary to a good set, from self as well as from cross-pollination. 
\iBaaeoen qib ,aeed ^enori cj3 riouo ,~9iofl9^.o ^il^inx-.-.u . .. . H 
3u;.7iblR-be3S__and hjaevjoe es pla y a xgJffl H Mt e b86ji t- J3 L J;jiQklu.$berr; 
pollination . 
