Vol. 15—1961 - NorthEastern Weed Science Society

Table 1 -Effect of Granular Formulations of Herb1cides Applied
at Layby on
181.
Chemical
.\lanap lOG 4- 1.5 1.5 95' 70
Dalapon lOG 4 0 0 75 75
8 0 0 9$ 95
.,
Yield 2:L
of Che'ck
Falone lOG 4- 1 1 95 85 109
DNBPlOG 4- 4 '} 80 70 ,
8 4- 2 95 85
Randox 20G 2 0 0 8, 75 144
4 0 0 : 9; 90 118
tl
.Randox T 20G 3 4 70 70
3 4- 95 90
,Vegedex 20G 2; 0 0 85 80
5 0 0 90 85 113
Zytron 25G 10 0 0 90 80 '123'
.
15 0 ,0·, 100 90 129
Esteron G i 2 '} 50 50
2,4--D 1 5 4, 70 50
2 5 4 SO SO
, ....
., ...
l/Injury Rating: O~no injury noted,5 ..Severe
.
2/ Yi:eld data. were obtained only on plots where treatments did not
se'riously' injure potatoes and if the plot, had no sprayer wheel track
damage. Yield of treated plot in per cent of yields of checks on
each side.
SUMMARY
Falone at 4 Ibs. gave longer residual control of crabgrass and caused
less injury to potatoes than ·Alanap at 4 lbs. Randox at 2 to 4 Ibs. J
Dalapon at 4 to 8 lbs., Z~tron at 10 to 15 Ibs. and Vegedex at 2; to
5 Ibs. gave good to excellent control of crabgrass. The above observations
were generally ,true for control at another location where some
broadleaved, weeds and barn~ard grass was also present.
Randox T was injurious to potatoes at only: 2* lbs. per acre.
Some means should be employed to brush granular formylations of some
chemicals from the plant to reduce injury from leaf absorption.