Vol. 16—1962 - NorthEastern Weed Science Society

lAssociate Research Spec1alist in Weed Control; Assistant
Professor Pomology; and formerly Research Assistants in
PROGRESSREPORTOF WEEDCONTROLIN S'l'RAWBERRIES
R. D. Ilnicki, C. R. Smith, T. F. Tisdell, and C. F. Everett l
.ABSTRACT
Annual weeds are a serious problem in strawberry production.
In the present system of culture it is difficult and
time consuming to keep the rows weed-free without seriously
affecting the development of plants and runners. At present,
there is no safe herbicide .with residual activ.ity long enough
to allow the plants to become established during their critical
time of development. The object of th~s stUdy was to
evaluate some new herbicides for annual weed c,ontrol during
the early stages of development.
Jerseybel1e plants wet-a set on April 12, 1961 and on
April a8, following an initial cultivation, the following
herbicides were applied in quadruplicate:
Herbicide and FormUlation Rate, lb./A
Dimethyl 2,3,4,6-tetrachloroteraphthalate(dacthal)
50Wand 5G , 4, 8 16
Dacthal + isopropyl-N-(3-chlorphenyl)-carbamate (CIPC~
50W+ E.C. 6 + 1
2-chloro-6-bis(ethylamino)-s-triazine (s1mazirte)
80W . . .. It
2-chloro-4-ethylamino-6-diethylamino-s-triaz1ne
(trietazine)
50Wand 4G . . 2, 4
N,N-dimethyl- ,7\, j -diphenylacetamide (diphenani1d)
80Wand 5G (Eli Lilly and co.) 2t, 5, 10
50Wand 4G (Upjohn ce.) 2, 4, 6
0-(2,4-dich1oropheny1)-0-methylisopropy1 phosphoroamidethioate
(zytron)
E.C.
10, 20
Ethyl di-n-propylthiolcarbamate (EFTC)
E.C. and 5G 3, 6
t-butyl-di-n-propylthiolcarbamate (R-1856)
E.C. and lOG 3, 6
Ethyl di-n-butyl thiolcarbamate (R-1870)
E.C. and lOG 3, 6
Propyl ethyl-n-butylthiolcarbamate (R-2061) (Tillam)
E.C. and lOG 3, 6
In addition, several untreated checks were inclUded per
replication. All thiolcarbamate herbicides were incorporated
immediately after application.
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