Castor plant organs contain ricinine . There ricinine paralytic poisoning the insects produce pharmacological effects .low pressure sprayer Tanabe farm in northern China , often planted around their houses to a large number of castor lightly .
Castor leaves : castor leaf water ( leaf water ratio : 1:8 fresh leaves , dry leaves 1:50 ) and cook for 1 hour, filtered to the residue , add a small amount of soap, can Pensha caterpillar and so on.
Castor Seeds : Castor seed pounded with water ( kind of water ratio of 1:1 ) stir well , then pour a small amount of soapy water , and diluted with water to 100-150 times, can Pensha gold shells and a variety of vegetables aphids.
Castor oil cakes : castor oil cakes plus water plus soap ( ratio of 1:5:0.1 ) , impregnated , soap to the open,chemical sprayer filtered to the residue , can Pensha chafers and various vegetables aphids.
Castor Straw : The castor leaves, stalks , roots and dried crushed to 50kg per acre amount into the soil , you can control grubs hazards.
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