| Chemical |
Dicamba |
| CAS-number : |
1918-00-9 |
| |
| Synonyms : |
| 3,6-dichloro-o-acidic acid |
| 3,6-dikloori-2-metoksibentsoehappo |
| Banvel |
| Dikamba |
| Mediben. |
| |
| Uses : |
Herbicide.
|
| |
| State and appearance : |
White crystalline solids.
|
| |
| Molecular weight : |
221.04 |
| |
| Water solubility, mg/l : |
| 7900 |
|
| |
| Melting point, °C : |
| 114 |
114 - 116 |
| 116 |
|
| |
| Half-life in soil, days : |
| 14 |
Li et al. 1990 |
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 1040 |
orl-rat,Lewis & Sweet 1984 |
| 1190 |
orl-mus |
| |
| Effects on plants : |
4 oz dicamba /acre (= 0.307 kg/ha) sprayed before the 4-leaf
stage of wheat and barley caused gross malformation of the
stems and leaves, reduced height, delayed maturity and
interfered with normal seed development in the main culms.
Under lush conditions of the greenhouse similar effects were
induced by half this dosage (= 0.154 kg/ha).
Root tips of wheat
and barley seedlings, germinated in petri plates at various
concentrations of dicamba, showed a sharp reduction in the
numbers of dividing cells; mitosis was disturbed by as little
as 10 ppm of dicamba (Friesen et al. 1964).
|
| |
| LC50 values to crustaceans, mg/l : |
| 3.9 |
srv,act,96hr,Gammarus lacustris,Sanders |
| |
1969 |
| |
| NOEC values to crustaceans, mg/l : |
| 100 |
srv,act,48hr,Daphnia magna,Sanders 1970 |
| 100 |
srv,act,48hr,Gammarus fasciatus,Sanders |
| |
1970 |
| 100 |
srv,act,48hr,Asellus brevicaudus,Sanders |
| |
1970 |
| 100 |
48hr, Cypridopsis vidua, Sanders 1970 |
| 100 |
48hr, Palaemonetes kadiakensis, Sanders |
| |
1970 |
| 100 |
48hr, Orconectes nais, Sanders 1970 |
| |
| LC50 values to fishes, mg/l : |
| 20 |
srv,act,48hr,Lepomis macrochirus, |
| |
Hughes & Davis 1962 |
| 465 |
srv,act,96hr,Gambusia affinis,Johnson |
| |
1978 |
| 100 |
> 100, srv,act,96hr,Oncorhynchus kisutch |
| |
Lorz et al. 1979 |
| 135 |
srv,act,96hr,Salmo gairdneri,Pesticide |
| |
Manual 1983 |
| 135 |
srv,act,96hr,Lepomis macrochirus, |
| |
Pesticide Manual 1983 |
References |
| 70 | Anon. 1983c.
Pesticide Manual.
Worthing, C.R.
(toim.)
A world compedium.
The British Crop Biotection Council.
London. 7 th edition. |
| 1748 | Friesen, H.A., Baenziger, H. & Keys, C.H. 1964.
Morphological
and cytological effects of dicamba on wheat and barley.
Can.
J.
Plant Sci. 44(3): 288 - 294. |
| 622 | Hughes, J.S. & Davis, J.T. 1962.
Comparative toxicity to
bluegill sunfish of granular and liquid herbicides.
Proceedings Sixteenth Annual Conference Southeast Game and Fish
Commissioners. pp. 319 - 323. |
| 1589 | Lewis, R.J. & Sweet, D.V. 1984.
Registry of toxic effects of
chemical substances.
National Institute for Occupational Safety
and Health.
No. 83-107-4. |
| 2450 | Li, W.,Merrill, D.
E. & Haith, A. 1990.
Loading functions for
pesticide runoff.
Research Journal WPCF, 62(1): pp. 16 - 26. |
| 1222 | Sanders, H.O. 1970.
Toxicities of some herbicides to six
species of freshwater crustaceans.
J.
Wat.
Pollut.
Contr.
Fed.
42(8): 15544 - 1550. |
| 1221 | Sanders, H.O. 1969.
Toxicity of pesticides to the Crustacean,
Gammarus lacustris.
Bureau of Sport Fisheries and Wildlife
technical paper 25, Government Printing Office, Washington,
D.C. |
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
