1507598 Anti-aphid coatings SOC CHIMIQUE DES CHARBONNAGES and LES PLASTIQUES DE CARMAUX 19 Oct 1976 [24 Oct 1975] 43248/76 Heading A5E [Also in Divisions Al and B2] Virus degeneration of plants vehioled by aphides is prevented by mulching them with antistatic films of low density polyethylene, high density polyethylene, polypropylene and polybutene coated with aluminium powder. Cultures such as tomatoes, pimentoes and marrows may be thus treated.