yield of 52-70 celery were not significantly affected by the treatments. Randox
is not currently cleared for use on celery but Vegadex has approval for a second
application to celery. Yield data are given in Table 2.

 Table 2. Weed control and celery yield for repeat applications
 of Vegadex and Randox herbicides. Average values for treatments
 repeated at 3 and 4 weeks after setting.


Herbicidal
Original


treatment
 Repeat


Weed control two
weeks after repeat


 Yield
Crates/acre


Randox, 5 qts.
Handweeded
Randox, 5 qts.
Randoxc, 5 qts.

Vegadex, 5 qts.
Handweeded
Vegadex, 5 qts.
Vegadex, 5 qts.

None

Handweeded


None
Randox, 5 qts.
Randox, 5 qts.
Vegadex, 5 qts.

None
Vegadex, 5 qts.
Vegadex, 5 qts.
Randox, 5 qts.

Karsil + Vegadex

Handweeded


Post emergence to celery and weeds


in seedbeds


 Karsil (NIA 4562) has effectively controlled the following seed-
ling weeds in celery seedbeds: bedstraw, carelessweed, Chenopodita, crabgrass,
cudweed, dog-fennel, Eclipta, Galinsoga, goosegrass, pellitoryweed, purslane,
stickerweed, ragweed, Rorippa, and others. Relatively few annual weed seed-
lings are resistant; however, weed tolerance increases with age. celery seed-
lings with fewer than 3 true leaves when sprayed are stunted severely and there
is some stand reduction. Larger celery seedlings are stunted temporarily and
at time of transplanting are equal to check plants in growth and weight. After
field harvest plants from treated beds have not differed significantly from
checks in number or length of petioles, or crates per acre yield. Karsil is an
experimental herbicide currently not available commercially. Yield data from
commercial trials are given in Table 3.

 Table 3. Average yield of 52-70 celery following post emergence
 application of Karsil to seedbeds at five (5) locations. Rates
 of application are pounds active per acre to the seedbeds.


Seedbed herbicidal treatment

Karsil, 1 lb.
 2 Ib.
 3 Ib.

Karsil, 1 lb. + Vetaiex 2 Ibs.


Check, handweeded


Yield, crates/acre

 637
 674
 699


670

652


66%
94
94
94


834
844
826
829

889
892
891
813

904

833


100


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