Vol. 15—1961 - NorthEastern Weed Science Society

Table 4.
­
36.
The Percent of Applied Radio-Dalapon
VJhich -JVas Found in the Rhtzomes , Roots, and Untr-eated Shoots*
---------~----------------I---------
0/0Wetting Agent New Old Untreated
Formulation . in Solution Rhizom e .Rhizom e Shoot Roots
--------------------------1--------­
Dalapon Alone 0.0 0.74 0.22 4.9 0.26
Dalapon with P-26-2 0.05 1.35 0.53 7.3 0.28
O.1 1. 92 0.67 8.4 O. 17
0.2 2.94 0.81 10.5 0.24
Dalapon with O. 05 1. 43 O. 49 6. 9 O. 22
Tergitol TMN O. 1 2.05 O. 73 7. 7 0.26
~~-----------~~----~~ __ !~~I __!! __ ~~-
* Application made on third leaf of six-leaf plants of quackgz-asa.
These experiments clearly showed that the additil of selected non­
ionic wett ing agents to the formulation resulted in increa4ed movement of
dalapon into the rhizomes and that the results obtained wijth the two wetting
agents were .quit e similar. " I -
The accumulation of dalapon in young tissue was ~ISO markedly incr
eaaed by the addition of non-ionic wetting agents, and sjuch increases are
.nhown in Table 5.
Table 5.
The Percent of Applied C 14 - Da la pon I
-iVhich was Found in the Leaves Above the Treated ~Third) Leaf
- - - - - - - - - - - - - - - - - - - - - - - - - -I - - - - - - - ­
0/0T~~J etting Agent 4th i5th 6th
Formulation in Solution Leaf. Leaf Leaf
-------------~------------~-------
Dalapon Alone 0.0 2.0 I 3.2 3.4
I
Dalapon plus P-26-2 0.05
0.1
0.2
2.4
3.9
6.3
3.9
5.6
8.2
11. 7
16.5
24.4
Dalapon plus
Tergitol
TMN
- - - - - - - - - - -
HerE:, as shown
increased ac.curnul.at ion
- - .­- -
0.05
O.1
0.2
befor-e, the
of dalapon-2
- - - - -
use of the
_C 14 •
2.2
6.0
10.8
- - -
wetting
i 2.6
I 6.6
.11.9
i
- -! - - - - -
ag~ts resulted
I
I
9.2
16. 1
26.2
- -­
in
I
i
I
I
i
I
I
i
I