Vol. 15—1961 - NorthEastern Weed Science Society

D. FlantinB A!Plication of Thiolcarbamates and Dichlorobenzon1­
trile, Tab es 9 and 10.
,
Dichlo~obanzonitrlle and 4 or 6 pounds of R-2061 (propyl
Qthyl-n-butylthiolcarbamate) injured Carmel Cross sweet corn to
the ext enb that.' yields were reduced 'in spite of excellent weed
cont~ol·, Table ,,10. Four or six pounds of R-1607 and 4 or 6 pounds
~f EPTQ:did not differ significantly in effect on yield, Table 9.
. ,~
:.. .
Conclusions
Planting application of Atrazine, Simazine, and Trietazine
produced higher yields of Carmel Cross sweet corn than planting
application of Diuron or Dacthal and emergence application of
Falone or DNBP-Dalapon mixtures. Falone and DNBF-Dalapon treatments
resulted in obvious injury to corn p Lant s , Diuron did not
produce obvious injury.
Contrasted to planting application of Diuron alone, an
Qmergence applicati~n of 0.6 pounds of Diuron plus 3 pounds DNBf
per acre did not differ significantly in yield from planting or
emergence applications of 2 poungs of Atrazine or emergence
application of 2 or 4 pounds of Trietazine.
Depending ~pon comparative costs of materials, from a production
point of view, an emergence application of Diuron-DNBF
might have a slight cost advantage over the triazines without
reduction either of yield or of weed control. No benefit in 1960
was observed for soil inoorpoll"ation of either granular Atrazine
or granular Trletazine. Working Dacthal, into the top inch of
soil" however, reduced percent weed control compared to undisturbed
surface applicatlon$
Four or six pounds per acre of propyl ethyl-n-butylthiolcarbamate
(Stauffer R-2061) and 4 pounds of dichlorobenzonitrile,
injured Carmel Cross sweet corn. Four or six pounds of n-propyldi-n-propylbhiolcarbamate
(Stauffer R-1607) and 4 or 6 pounds of
EPTC did not differ significantly in effect on yield.
193. '