Vol. 15—1961 - NorthEastern Weed Science Society

The following methods of application were used.
Stem broadcast - All stems and branches were sprayed with special
emphasis placed on the root crown.
Stem broadcast and soil - All stems and branches were sprayed
with special emphasis placed on the root crown snd a three
foot radi~s of solI around each ,clump or stem of black
locust, ,sassafras, and sumac. Other species did not receive
sojl treatments. '
I .: ,
Broadcast basal and soil - The lower one third of each main stem
was sprayed from, and including, the root crown up and a
three foot radius of soil around each clump or 'stem of black
locust, sassafras, and s~ac. Other species did not receive
soil treatments.
The density of the brush averaged 7,000 stems:per acre, and the average
height was 12 feet. Gallons per acre for the three methods of application
averaged as follows:
Stem broadcast
-,
Summer - 550gallon8 of water per acre.
Dormant - 230 gallons
of No. 2 fuel oil per acre.
Stem broadcast
and s01l
Dormant - 300 gallons
of No. 2 fuel oil per acre.
Broadcast basal and oil
Dormant - 250 gallons
of No. 2 fuel oil per acre.
I .
The chemicals used in summer treatments were:·triethanol amine salts
of 2,4-0 'and 2,4,5-T,liquid amitrol and the'triethanol amine salt of 236­
trichlorobenzoic acid. In the dormant treatments the 2-ethylhexyl esters
of 2,4-0 and 2,4,5-T was used.