摘要：The study was conducted on the chemicals used in lychee of 6 different areas in Gazipur and Rajshahi regions. The selected areas are Fruit Research Station, Bangladesh Agriculture Research Institute, Binodpur, Rajshahi-6206; Horticulture Centre, Rajshahi Court, Rajshahi; Horticulture Development Centre, Bangladesh Agriculture Development Corporation, Noudapara, Rajshahi; Dactar Bari Nursery and Dillar Bari Nursery, Moytha Para, Pirojali, GajipurSadar, Gajipur. In these areas several chemicals used like Ripcord, Fighter 25 EC (Emulsifiable concentrate), Cymbush 250 EC (Emulsifiable concentrate), Malathion 85E (Emulsifiable), Tilt 250 EC (Emulsifiable concentrate), Regent 4 SC (Suspension concentrate), Torque, Cyper TC (Technical material) Insecticide, Sulphur and acids, or Combinations, Ethephon solution, Sulphur dioxide, Solution of Chitosan and L-glutamic acid in lychee during growth, ripening and storage period. These chemicals help to control pest, insect and unwanted weed production, by providing good environment during growth and ripening period. Chemicals which used for storage purpose stabilize the color, maintain the moisture content and improve the quality of fruits. Other chemicals like Flora, Emcogen powder, Pranti-vita, Vio-fata used as vitamin after flowering which helps to grow, mature the fruit also prevent from virus attack or insects. It was observed that 87.5% chemicals were permitted while 12.5% chemicals were non-permitted. Among them chemicals namely Benomyl, Okojen, Boron and Zinc, have not been recently used. Okojen contain higher amount of Urea that is harmful to environment. These prohibited chemicals have terrible effect in our body and environment.
