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MELIACEAB 
(Mahogany Family) 
AZADIRACHTA INDICA A. Juas. Synonym t Me 11 a azadirachta L. Nim 
or neem tree* 
The leaves were mixed with grain that wes kept in closed receptacles 
"hut the grain was not protected from the attacks of beetles ( Calandra ) 
Sitophilus cryaa (L.) and Rhizopertha dominie a (F.). — Fletcher and 
Ghosh 1140, pp. 736-737). 
Watery extracts, macerated juices, and dusts of the leaves were 
tested in India against a psylla, aphids, and lucerne weevil grubs. 
The extracts in concentrated form gave 25-percent mortality as a con- 
tact poison against the weevil grubs and when sprayed on food plants 
acted as a positive repellent. Against the other insects the results 
were very indefinite.— Chopra ( 97 , p. 109). 
A light coating of oil of neem applied to the forehead and around 
the eyes of bullocks in India was of little value as a fly repellent.- 
Cherian and Kylasam (86 ) • 
Extracts of the leaves of this plant from India were slightly toxio 
to the bean aphid.— Tattersfi eld and Gimingham ( 591 ) . 
A 5-percent extract of the stem bark killed 60 percent of the adult 
grasshoppers ( Epacromla tamulus (F.)) and a 6-percent extract killed 
100 percent.— Puttarudriah and Subramaniam ( 311 ) . 
Neem cape, a cheap indigenous material in India, appeared to be 
an effective repellent against weevils. — Pruthi ( 310) . 
Oil of margosa did not repel blowflies on sheep, but a 3-percent 
oil emulsion repelled them for 8 days.— Hobson (196) . [This oil is 
derived from the fruit and seeds of neem.J 
CARAPA GUIANEENSIS Aubl. Synonym: Xylocarpus car»pa Spreng. Crabwood. 
The seeds yield an oil known in commerce as crab oil, which is 
reputed to be a powerful insectioide. Insects are said not to go near 
trees daubed with the oil. A solution of soap made from the oil is an 
efficient insectioide for greenhouse or outdoor plants .--Holland 
( 197 , p. 148). 
The decoction is used as an insecticide.— Greshoff ( 171 , p. 84). 
CARAPA PROCERA DC. Crabwood. 
The seeds contain a large percentage of crab oil which is used as 
an insecticide in the Gold Coast, Africa.— Irvine (213). 
