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Vol. 16—1962 - NorthEastern Weed Science Society

Vol. 16—1962 - NorthEastern Weed Science Society

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Table 3. Crabgrass Control in Rough Turf with Experimental IVJaterials<br />

Rate PerO@tage , d'L<br />

control\~ ;Q~abgrasS Pe~t,¥e thinning<br />

Herbicide ~ugusti Ju~8 August 21<br />

,"i:;:iA<br />

"Bandane"" , 20 70.0 . :~.r 0<br />

' [<br />

40 97.0<br />

0<br />

Dipropalin, 5 99.{)·· gL 0<br />

],0 99.0 62, 15<br />

Trinuralin 3 99.0 l~:, 15<br />

6 99.0 3 .; 35<br />

:'1(..'<br />

j<br />

515<br />

u4513 4 77.0<br />

f~'~<br />

26<br />

8 94.5 95<br />

Zytron 15 99.0 ~. 0<br />

"<br />

u4513 controlled crabgrass well but killed moi~ of the grass et thB,8 Ibs./A<br />

rete, leeving on~ broadleafed weeds. Trifluralin~.lso was very injurious to<br />

the turf. Dipropalin et 5 Ibs .•/ P provided good control of crabgrass and was not<br />

injurious to the turf. At 10 lbs.!A, however, dipropalin caused consid~rible<br />

thinning. "Bandane" at 40 Ibs./A provided excellent control of crabgrass and<br />

no turf injury. Of 'the new materials, both dipropaIin and "Bandanen warrant<br />

further testing_ "<br />

'. ":,l,' L-"<br />

Effects of mowing height on herbicide effectiveness In the spring of 1960,<br />

standS of turf grasses ~lere established in unrepHgate

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