Vol. 15—1961 - NorthEastern Weed Science Society

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459.
slopes, in general, are 80 feet wide, thus leaving 60 feet untreated.
A comparison was made, and the number and dates of
mowings were recorded.
:Hay 13 .. Untreated areas mowed• No mowing required on plots.
It fI n II
June 13 " " " "
If It n
June 21 "
tI It If
June 28 " " If " n II If " tf fI II
July 13 If It If
"
August 2 - . II" " II
If
" tl
August 10 .. " " "
"
August 15 .. Treated areas were mowed.
On August 15, the invasion of crab grass made an uneven, unsightly
appearance, and it was necessary to mow the treated
areas in order to maintain the general attractiveness.
CONCLUSIONS
1. Seven mowings in this area were eliminated.
2. Maleic hydrazide inhibited the growth of
desirable grasses.
3. A uniform distribution of the maleic hydrazide
had been obtained.
4. For the development of a sound program using
maleic hydraZide, it is necessary to further
treat areas with herbicides to control broadleaf
and annual weeds.
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REMARKS ,
In' the future, on all areas treated \"'ith this type
of apparatus, to'further insure that the height from grade
remains constrnt, the two wings of the boom should float so
that they will maintain the desired height. This may be
accomplished by fabricating the booms With 17 inch bicycle
wheels mounted at the extreme ends of the booms, allol.dng them
to raise or lower whenev~r contours change. It would be an
improvement to mount all controls within easy reach of the
tractor operator so that he might shut off the unit without
stopping whenever making turns, thus eliminating overlapping.
Over an expansive, relatively flat area, this method would be
a satisfactory way of applying maleic hydrezide, although results
will rely tremendously upon the conscientim1sness o~ th~
operator.