priciples of insecticide use in rice ipm

Insecticides in Rice IPM (DRR)
Ethiprole: C 13 H 9 C 12 F 3 N 4 OS. The chemical name is 5-amono-1-(2-6-dichloro-4-(trifluromethyl)-4ethylsulfinyl-1H-pyrazole-3-carbonitrile.
It differs from fipronil the major phenyl pyrazoles insecticide,
only in an ethylsulfinyl substituent replacing the trifluromethylsulfinyl moiety. It is an insecticide
recommended for alfalfa, cotton, peanut, rice and soybean highly active on stink bugs, planthoppers
and aphids.it is an inhibitor to neural transmission by GABA. It has low toxicity to fish and birds but
affects silkworms.
NEONICOTINOIDS
Imidacloprid: C H C1N 0 . Chemically it is 1 - (6 - chloro - 3 - pyridylmethyl) - N nitroimidazolidin-2 -
9 IO 5 2
ylideneamine. It is a systemic insecticide with stomach and contact action. Controls sucking insects,
soil insects, rice water weevil etc. Used as a seed dressing or foliar/soil treatment for control of
pests of cotton, rice, etc. Acute oral LD for rat is 450 mg/kg; dermal for rat is > 5000 mg/kg.
50
Thiamethoxam: C H ClN O S (EZ)-3-(2-chloro-1, 3-thiazol-5-ylmethyl)-5- methyl-1, 3,5-oxadiazinan-4-
3 10 5 3
ylidene (nitro) amine. It is nitroguanidine or thiazole insecticide. It is slightly carcinogenic to rats. It has
contact, stomach and systemic activity. It is recommended for the control of aphids, whitefly, thrips, rice
hoppers, rice bugs, mealybugs, white grubs, leaf miners etc as foliar and soil insecticide in cole crops,
vegetables, rice, cotton, fruits trees and other cereals. The formulations are FS, 70 WP, GR, SG, 25 WDG,
and WS. Acute oral LD for rat is1563 mg/kg and dermal for rat is > 2000 mg/kg.
50
Thiacloprid: C H CIN S. It is (Z)-3-(6-chloro-3-pyridylmethyl)-1-3-thiazolidine-2-ylidenecynamide. It is an
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insecticide and molluscicide. It has contact and stomach action with some systemic properties. It is new
chloronicotinyl insecticide, targeted chiefly to control aphids in orchards and vegetables. It’s acute oral
LD for rat’s is > 444 mg/kg. It is a possible carcinogen in the human beings. MRL for cereals is
50
0.02 mg/kg.
NERISTOXINS
Cartap: C 7 H 16 C1N 3 O 3 S 2 . Common name is Cartap hydrochloride. Chemical name is S, S - 2dimethylaminotri
methylene) bis (thiocarbamate) hydrochloride or 1, 3 - Bis (carbomylthio) - 2 -(N,
N-dimethylarnino) propane hydrochloride. It is systemic with stomach and contact action. It acts on
the central nervous system by ganglionic blocking action resulting in paralysis, cessation of feeding
and death due to starvation. It is effective against rice stem borer and leaf folder, sugarcane shoot
borer, cabbage diamond back moth, etc. Its registered formulations in India are: 50 SP and 4 G. It’s
acute LD 50 : oral (rat) male 345 mg/kg, female 325 mg/kg; dermal (mice) > 1000 mg/kg.
Thiocyclam: C 5 H 11 NS 3 . It is N.N-dimethyl-l, 2, 3—trithian-5-ylamine. It is stable under ambient storage
conditions. Thiocyclam is selective insecticide acting as stomach poison and by contact with a 7-14 d
residual activity and capable of acropetal translocation. It is effective against lepidopterous and coleopterous
pests, particularly Leptinotarsa decemlineata larvae on potatoes. The acute oral LD 50 is 310 mg/kg for
male rats. It is moderately toxic to honey bees. It is formulated as SP, WSP and granules.
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