Vol. 16—1962 - NorthEastern Weed Science Society

158
,
OUtstanding treatmentttT1.ncluded
,
thet'ollowing herbicides:
d!Phenamid - allra.tea were effect1 ve ,but the rn1d-
, rate (4-5 lb.) was about optimum. The
highest rate'~had no effect on stand but
it decneaeedEhe vigor of the transplants
and the rooting of runners. The wettable
powderwaacsuperior to the granular prepara~
tlona butlt,also caused greaterreductiona
1n vigor.
dacthal - allratb~ere effectivfl'arid the rn1d-rate' '
(8 lb.) was more than optlriium. There were "
slight reductions with tht 'highest rate.
The wettable powder was sori1~\'ihat safer but
not as effective as theg~ariular. '
zytron ,- both rates ,were effeot1v... There was no,
increase:lin herbicidal aot1vity with the
high rate.
Tillam (R-2061) - both rates were effective. There
was a slight increase in ~oadleaved weed
control with the higher rate. The granular
preparatic>n,c'waasuperlor to tbeelliulsif1able
concentrate ~ut it also produced slightly
more inJury.
'
dacthal + CIPC -th~scombinationproduced excellent,
weed control out it caused' some injury to
stand and vigor of transpl~nts. The rooting
of runners'wasalso delayed. The control
was compa~ableto dacthal ,alo~e at the mid-,
rate. ' ,
Ekc - this compound was effective at the higher rate
" I but some injury to transplants resulted.Tbe
granular was more effective than the emulsi~
fiable concentrate.
The s-triazine herbicides were injurious to strawberries
notwithstanding that they prOduced outstanding weed oontrol~:
There was no difference between the wettable powder and the
granular preparation of trietazine. '
All other herbicides ,were ineffecti"te in this study.
This experiment will be continued through next year.
After yield analyses more complete information will be
forthcom+ng.