A second treatment of the plants with the chemical on 23 Sept. 1989 resulted in no significant increase in shoot emergence before or after freezing temperatures killed the ferns.
(A second treatment of the plants with the chemical on 23 Sept; resulted; in no significant increase in shoot emergence before or after freezing temperatures) (A second treatment of the plants with the chemical on 23 Sept; killed; the ferns)
A second treatment of the plants with the chemical on 23 Sept A second treatment of the plants with the chemical on 23 Sept
resulted killed
in no significant increase in shoot emergence before or after freezing temperatures
the ferns