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Vol. 16—1962 - NorthEastern Weed Science Society

Vol. 16—1962 - NorthEastern Weed Science Society

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505<br />

DIPHENATRILE,DJPROPALIN, ANp,!TRIFLURALINAS<br />

" 1<br />

PRE-EMERGEN TURF HERBICIDES<br />

.. 2<br />

E. F. Alder and R. B. Bevington<br />

I<br />

Diphenatrile (diphenylaceto~itrile), dipropalin (N,N-di(n-propyl)­<br />

2,6-dinitro-£-toluidine) an4 trifluralin (2,6-dinitro-N,N-di-~propyl-a,a,a-trifluoro-E-toluidine)<br />

have been extensively tested<br />

as pre-emergent herbicides for turf at the Greenfield Laboratories<br />

of Eli Lilly and Company. Sixty turf experiments, consisting of<br />

over 3,500 plots, were conducted. Emphasis in these inve~tigations<br />

has been placed on thi determinatloi of effectiveness,<br />

appropriate application rates, ,duration of ~ctivity, safety to<br />

turfgrasses and ornamentals, effects of ea~ypost-emergent applications<br />

on weed grasses, and length of delay before reseeding.<br />

lli12h~n!!tri1e<br />

The herbiC1dalproperties ofd1phenatrlle ~ve been previously;<br />

reported in detai1 (1). At 3'0 pounds per ap:re. the. compound ,~s<br />

controlled seedling weed granes (barnyardgl,a,~", g ooaeg r-as s ,<br />

.foxtails, and crabgrasses) in turf. D1phen,.trlle is completely<br />

safe to established turfs, trees, shrubs, a~'

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