Vol. 16—1962 - NorthEastern Weed Science Society

Dosage. Ib./acre
Dimethyl
tetrachloroterephthalate
other
6
2,4-D 1
2 1
o 1
TABLE4. (Continued)
53
Per cent weed control at days after
__ --..:'~_- tre~tl!..lolY'--__ = _
31 ..,...,.--,~L;2...:...",,_~...,.
P.ctua1 Expected Actual 3.xpooted
86
84
43
Jj =At 31 days the check was 97 per cent covered by barnyard grass
crabgrass, purslane, pigweed, and galinsoga, and at L;2.days the
check was 99 per cent covered by the same weeds.
======================================
TABLE5
75
64
71
55
12
Crabgrass Control in Turf by Dimethyl Tetrach1oroterephthalate
Alone aOO in Certain Combinations - Field Test
Dosage, Ib./acre
Dimethyl
Per cent control 134 days after
tetrachloroterephthalate
other
Actual
Expected
treatment 11
10 0
91
5 0
43
10 2,4-D 0.5 91 91
o
0.5 0
10 NPA10 87 91
5o 10 26 43
10 0
5 o
chlordane 40 65 45
40 4
J/ = The check was 23 per cent covered by orabgrass.
SUMMARY
Dimethyl tetrachloroterephthalate has been tested in various combinations
with CDEC, NPA, DNBP, CIro, 2,4-D, and chlordane. In general, the results
were qUite promising and tend to encourage additional research with these as
well as other oombinations.
REFERENCE
1. Busvine, J. R. ·1957. A Critioal Review of the Techniques for Testing
Insecticides. Commonwealth Institute of Entomology, London. 208 pp,
41
18