The 2012 ASHS Annual Conference

This study was carried out to investigate the effects of different organic liquid fertilizer(OLF) for fertigation on growth and fruit quality of tomato in Korea. OLF fermented from Jan. 22 to April 16 at plastic house in 2009. Treatments was given with soybean meal+poultry manure (1:1, w/w), poultry manure+rice bran (1:1, w/w), soybean meal+rice bran (SM+RB, 1:1, w/w), and chemicals (control). We fertigated low concentration about 5% of OLF every week from 2 weeks after planting in 2010. The obtained results from this study were summarized as follows; The redness of hunter's color value was high in OLF treatments. The soluble solids content was in chemicals as 6.3 °Brix and in OLF treatments as 5.9-6.4 °Brix. The appearance rate of fruit blossom-end rot was high in control as 20% and that of OLF treatments was low as 4.7-7.0%. The fruit yield increased in OLF treatments 13-38% compare to control. The portion of over 150 g per fruit was high in OLFs as 70.5-72.3% but that of control was 66.7%.