Plant seedling and planting methods using soil disease control materials and soil disease control materials

摘要

PPROBLEM TO BE SOLVED: To provide a material for suppressing the occurrence of soilborne disease having high occurrence-suppressing effect on Chinese cabbage rootgalls which is brassicaceous plant disease injury and Brassicaceae rootgallses such as cabbages root galls and free from environmental pollution and to provide a method for suppressing the occurrence. PSOLUTION: The material for suppressing occurrence of soilborne disease is produced by carrying out carbonization treatment of a bulb part which is an onion piece in a carbonization furnace at 500C and 900C or by carrying out carbonization treatment of an epidermal part which is an onion piece in the carbonization furnace at 300C and 500C. After carbonization treatments of the bulb part and the epidermal part are separately carried out, these treated materials may be mixed to produce the material for suppressing occurrence of soilborne disease. The material may be produced by further adding 5-20 wt.% additive such as potassium carbonate which is permeated into the tissue of onion piece in a solution state and evaporated at carbonization treatment temperature of the onion piece to the onion piece to permeate the potassium carbonate into the tissue of the onion piece and heating the onion piece containing the potassium carbonate in the furnace to carbonize the onion piece while evaporate the additive. PCOPYRIGHT: (C)2008,JPO&INPIT