Vol. 15—1961 - NorthEastern Weed Science Society

94.
Weed Control
with Randox l T in Corn and Onions
R. E. Althaus 2, Robert W. Langlois 3 and L. S. Gleason 2
Randox T is a combination of CDAA( or chloro-N,N-diallyl acetamide)
,.and tr1.chlorobenzyl ~hloride. This product is an outgrowth of Ranl
dox '~hlch is used for weed control in corn and soybeans. Early
research and developmEmt, work and later fleldexperience demonstrated
that Randox (CDAA)wss particularly effective against grasses when
applied as a pre-.emergence treatment. Broadleaf weed control is
moderately good except. for smart-weed and lambsquarters.' In areas
of the Midwest where foxtail (Setaria sP.) is the principal weed
species, Randox is still the preferred-nerbicide, but in areas
where broadleaves are troublesome~ practical weed control with
Randox .i~ marginal., ','
The Monsanto Agricultural Research Laboratories discovered that
it waa possible to combine trichlorobenzyl chloride (TCBC) and
R8ndox'(CDAA)and'achleve broad spectrum. weed control which in­
cludes such weeds as foxtails, crabgrass, annual blue grass,
sandbur, ragweed" annual, morning glory, smartweed, butterprint,
pigweed, pur-alane, Russ'ian thistle~' Lambaquar-bez-e , mustard and
groundl3el (1,2).
Randox Twaslhtroduce~ commercfally 'in 1960 'for use on field corn
both-as an emulsifiable,and as a granular formulation. Both formulations
are equally efrective in .eed kill and crop tolerance and
canb¢ usedln eIther form a.cpchd.lng"upon the growertspreference.
" A survey was conducted'QY the Monsanto field sales force to evaluate
the tield performance W).der·grOwe~ use ~ , ThEfsurvey was conducted
in a manner suc~ that tbe data were recorded as the opinion of the
farme;t"'s interviewed. This comp~i8ed interviews, wt.th '162 growers
located in the 11 Midwestern states. The results are presented
in Table I.
lRegistered trademark of the Monsanto Chemical Company
2Monsanto Chemical Company, St. Louis, Missouri
3Assoc. County Agricultural Agent. Orange County, New York