Abstract
Experiments in rearing of green rice leafhopper were mostly carried out in the laboratory under artificial illumination by using cages whose design has been described in a previous paper. The insects grew well in the laboratory when nymphs and adult insects were fed very young seedlings renewed at approximately 7-day intervals. The best results were obtained with seedlings at the stage when the tip of the first leaf was just emerging. Nutritive quality of the seedlings was found to rapidly decrease when the interval after seeding increased. Under such conditions of feeding, 15-20 newly emerged adults could be produced by a female when oviposition lasted 2 days. Though the weight and fecundity of newly emerged females somewhat decreased with the increase of population density, maximum production of newly emerged adults under the rearing conditions mentioned above amounted to nearly 4, 000 individuals per cage.
