Vol. 16—1962 - NorthEastern Weed Science Society

69
THE INFLUENCE JIt P.I!ll'ROLEUM Ml:fLOi"'O. N 'Jl}JE
PERFORMANCE OF SEVERALHERBICII:lBSY
George Bayer ,Bodgerdfsrgsn and Joseph Cialone Y
For .the past several yearsplutic sheets. Poth, black and clear and V!lU'Ying
in width have. been .used commerc1ally as a methodotCClntrollingweeds,
stimulating plant· growth and 1m,proVing small fruit $:Id vegetable quality •
. ':his report is c01lQerned with,the applicat1()n~ a liquid petrole1,llllmuJ.ch in
cOllbinat ion with herbicides Which IIl!ght serve some of the same purposes 8l$. the
black plastic sheets. but to be 'PPLied as a~~pr~ alter seeding or prio~·to
transplanting. Work done by Kaye&:Wiggans21 ind:1cated that the effectiv.ess
of certain herbicides ' was enhanced when used in coaPinetion with aspha1t~ch.
Experimental
Four tests were carried out duriIig the 1961 growing season at Ithaca. The
sandy loam soil was ploved, diskedand harrowed with a meeker to prOVide a uniformly
f:Lne s~ bed. The randomized plots were eaeh 3 x 15 feet and rep.l.:lcated
two to four t1meso.epending on the nature of theJt.,1t. The herbicides were
applied with a ~ proessure-operated Small-~l,ot spraye. 1' •. For. ease of operat. ion
in the latter two tests the petrole1,llll mulc~ wa, oppUed.; using a hand o.. rateo.
1.5 gall.oJl;garden~type sprayer connected to a standard spray boom equi~w1th
two 8004 TeeJet ~~type noZZles.
In total; seyendifferent~heJilJ,cals were exam1Jledin three categories relating
to the mulch: under the mulch, ~ with mulch an4:;no mulch. A fourth.C)~check
category was that of no mulch and no herbicide. Application of herbic;l.de':fllI.d
mulch was on an overall basi.s. In the first test two rates of mulch were tested.
Since no differences were observed" only one rate wasused m subsequept -tests.
Crops were varied according to chemical. SQlIlfl:werechosen on the be,sie. of
present herbic:Ldal practices but. several sensitive grops were selected as ,indicators
of chemical. toXicity or &et1v;l:ty.
The foUl'. tests were started respectively on JU~ 16, July 7-10, Augl1$;tl 7,
and September 1.
!JPaper No• 469of the~partmentof Vegetable Crops, Cornell University,-tthaca,
gj~;~duate Assistants, Department of Vegetable Crops, Cornell University .'
YKays , W.R.aDd S. C. WiggaM,Oklahoma State, S~water, Oklahoma. Soil
stabilizers and herbi~ide combinations for weed. ~trol with horticultural
4 jcrops • Oral presentation ASBS.. August 1961.
:::tFormulation E.A.P. 2000 except as noted.
Part of this research was made possible by a grant in aid from Esso Re8ear~h
and Engineering, Linden, New,J~sey.