Common Name Action Chemical Properties Toxicity Application Formulation Benthiocarb Pre emergence and early post emergence herbicide. Less soluble in water, more soluble in xylene, alcohol and acetone. Acute oral LD50 (rat) 1903mg/kg Pre-emergence and early post-emergence herbicide for control of grasses, broad leaf weeds which infest rice fields, both wet seeded and dry seeded. E.C , 10% G. Chemical Name S - (4 - chlorophenyl) methyl dithyl - carbamotriate. Other Name Saturn, Saturno Common Name Selective pre-emergence herbicide. Amber coloured oily liquid soluble in water specific gravity 16.5 at 250C Acute oral LD50 (rat, 3120mg/kg; Dermal LD50 (rabbit)2510 to 5010mg/kg For pre-emergence control of annual grass and certain broad leafed weeds in both transplanted rice grown in certain Asian and South American area. 5% G, E.C Butachlor Chemical Name 2 chloro - 2,6 - diethyl - N - (butoxy - methyl) acetanilide. Other Name CP53619 Common Name - White crystals M.P. at 88 - 900C insoluble in water soluble inChlorinated hydrocarbons. Acute oral LD50 in rats, greater than 8000mg/kg Pre-emergence and early post-emergence control of annual grasses and broad leaf weeds. E.C and Granules. Oxadiazone Chemical Name 2-tertiary-butyl -4-(2,4-dichloro-5 isopropoxyphenyl)2 1,3,4-Oxadiazolin-5 -one Other Name RP17623 Common Name Pre - plant incorporated herbicide Orange - yellow crystalline solid. M.P 42 - 730C Acute oral LD50 (rat) - 1500mg/kg. Low order of toxicity to wild fowl. Toxic to fish. Pre-plant and pre-emergence incorporated, for the controlof annual grasses and certain broad leaf weeds E.C Fluchloralin Chemical Name N - (2 - chloro ethyl - a, a, a, - trifluro, - 2,6 dinitro - N propyl - P - toluidine. Common Name - Non - volatile, water soluble metal salt Acute oral LD50 (rat) - 850mg/kg. Used as a post-emergence application for the control ofbroad leaf weeds 5% G. 2,4 - D Chemical Name Lithium 2,4-dichloro phenoxy acetate Common Name Herbicide for paddy weeds Approx. 850ppm soluble in water boils at 154 - 1550C Acute oral LD50 (mouse) - 850mg/kg.   5% G Lolop Granules Chemical Name Pytolidynyl 2,4 - dichlorophenyl carbomate Common Name Pre or post emergence M.P 62 - 650C Acute oral LD50 (rat) - 2630mg/kg. Controls no. of weeds in rice. Incorporation not recommended. E.C 25%, W.P 50% and 7.7% G Nitrofen Chemical Name 2,4 - dichlorophenyl P - nitrophenyl ether Other Name NIP Common Name Herbicide (hormone type) Like 2,4 - D except for replacement of one chlorine atom by a methyl group M.P 118 - 1190C soluble in water at room temp is 825ppm Acute oral LD50 (rat) - 700 - 800mg/kg. Mouse 550mg/kg A translocated herbicide used as post-emergence for the control of annual and perennial broad leaf weeds   MCPA, metaxon Chemical Name 4-chloro-o-methyl oxy acetic acid Other Name Agroxone, Rhonox Common Name Selective post-emergence herbicide (contact type) Dark oily liquid M.P 90.6 - 91.60C Acute oral LD50 (rat) - 1384mg/kg. For post-emergence application to kill barnyard grass and various water weeds in rice E.C 2%, 25% Propanil Chemical Name 3,4-Dichloro phenyl propionanilide Other Name Bay30130, Chemrice Common Name Post-emergence herbicide It is crystallized substance slightly soluble in water, more soluble in organic solvents M.P 91 - 920C Acute oral LD50 (rat) - 1300mg/kg Effective for the control of barnyard grass   Propanide Common Name Herbicide White crystalline. M.P 132 - 1390C soluble in water (0.05%),ethanol (86.1%), benzene (3.3%) Acute oral LD50 (rat) - 1120mg/kg. Selective post-emergence control of broad leaf weeds EC Bentazon ChemicalName 3-isopropyl-1,H-2, 1,3-benzothiadiazin (4)-3H-one2,2 dioxide Common Name Selective herbicide Orange - yellow crystalline M.P 54 - 580C soluble in water less than 0.5ppm at 200C soluble in chlorinated hydrocarbon and aromatic solvents Acute oral LD50 (rat) - 1250mg/kg. Dermal LD50 (rabbit) >5000mg/kg Selective pre-plant incorporated - pre-emergence herbicide for the control of annual grass weeds and certain broad leaf weeds E.C WP, G Pendi methaline Chemical Name N - (1 - ethyl propyl) - 3,4 dimethyl - 1,2,6 dinitro benzenamine Other Name Prowl, stomp Common Name Conatact herbicide & desiccant The dichloride salt is freely soluble in water,sparingly in lower alcohols, Insoluble in hydrocarbons, Stable except under alkaline conditions. No measurable vapour pressure strongly absorbed and inactivated by soil particles. Acute oral LD 50(rat), 150mg/kg For desication of seed crops, for non crop and industrial weed control in bearing and non-bearing fruit orchards, shade trees, and ornamentals. For killing potato vines and aquatic weed control. G Paraquat Chemical Name 1,1-Dimethyl-4,4- bipyridinium ion Present as the dichloride salt Other Name Dextrone, Gramoxone Common Name Selective herbicide The acid itself is not used directly. Commercial products usually contain 85% sodium salt or mixed sodium and magnesium salts of dalapon. Acute oral LD 50 970 mg/kg Effective against quack grass , bermuda grass, johnson grasss and other perennial grasses Often it is used as a pre plant treatment to control established perennial grasses in crop land. It is translocated to the roots of most SPP and acts as a growth regulator.   Dalapon Chemical Name 2-2 dichloro propionic acid Other Name Basfapon ,Unipon Common Name Herbicide   Acute oral LD 50,4300mg/kg Shows much promise for the control of johnson grass applied just after harvest of such crops as grain sorghum and cotton. Pre emergence for the control of both perennial and annual weeds as a foliar application.   Glyphosate Chemical Name N-(phosphonomethyl ) glycine Common Name Selective herbicide   Acute oral LD 50 (male rat )501---720mg/kg Acute dermal LD50 2000mg/kg Rapidly metabolised. Particularly effective for control of water grass in rice. EL Molinate Chemical Name S-Ethyl hexa hydro-1,H-azepine-1,carbo thionate Common Name Non-selective, translocated Pre-emergence and post emergence Melting point-153 to154 degree celsius. LD50value 15000mg/kg controls weeds like Cynodon dactylon , Cyperus rotundus , Typha spp., Setaria spp.   Amitrole 90,Amizole Chemical Name 3, Amino-1,2,4-triazole

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