EFFECTS OF PLANT GROWTH PROMOTING MICROORGANISMS ON THE GROWTH OF STRAWBERRY

Effective microorganisms, which come into the market, were added into soil seven times at intervals of 15 days from December 2005 to February 2006. As a result, the number of leaves was more in the plants growing in the plot treated with Ofarmguard^®, O-sis^®, EXTN^® and the leaf area in the plants growing in the plot treated with EXTN^® and Ofarmguard^® than those of control, respectively. But root growth had no significance compared to control. Fruit quality and yield responses showed that EXTN^®, O-sis^® and Ofarmguard^® were higher in the fruit number per plant and firmness than those of control, and more increased in marketable yield than that of control. Application of EXTN^® in the plastic film house increased gradually bacterial density decreasing fungi density continuously until the late growth stage.