Vol. 16—1962 - NorthEastern Weed Science Society

SummaryandConclu.1Qp'
1. A quackgrass control in'lteld corn experiment was conducted on
a well drained gravelly l8ady loam. Atraziae, methymercapto
analogue of atrazine, dalapon, amitrol-T, and EPTCwere used. ,
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2. Atrazine was effective and most promising in controlling quackgritllB
in field com. TheciptilllUlllrate was,'. f'f.b/Aof active
in8redl.nt~ . It may be appl1ed in thefail~ early in the spri~$
on quaoklra .. foliage O'r:(Wt'planting' on a iJ"r'!paredseedlled. These
prellminar,v trials indicate that the 'most praCtical way to apply
atraZine is as a splitt:reiitment 2 lb/A oi:t"'oUage early in the '.'
spring arid 2 lb/A at plut.f.ils. Mixing the ~.~razine with the soU',
increased the effectiveria.llIignificantl,. J~oget conclusive .
tesults moteCests should'&e'conducted.
3. EPTCand combination treatments of dalapon, amitrol-T, and G-34l62,
with atraziDe were also promising in controlling quackgrass in
field com. EPTCat 6 lb/~ rate injure~ t~. com and resulted in
decreaaed yielda.
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Literature Cited
, •..1
1. Fertig, S. N. 'the effective1les'i'lof combinationsbf plow-down, preemergenee
aad p08t-emers~c.:treatments foi,qUackgrass control,
1960 results. Proc. Northea.tem WeedConttol Conference 15:312­
314 (1960).
2. Veagris, J~n88. The effect of rhizome length ..avdepth of planting on
the mechanical and chemical control of quaciSrass •. ~ 10 (1),
1961.
3. -------- Cheaical quackgra'scontrol. Proc. Northeastern WeedControl
Conference 15: 385-390. (1961).
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