The Effects on Nutrients Uptake and Soil Chemical Properties according to Fertigation Ratio of Green Onion (Allium fistulosum L.) in Open Field

In order to apply the fertilization manual open-field fertigation system, it is necessary verify crop productivity. This study was carried out assess an appropriate nutrient supply ratio for in green onion (Allium fistulosum L.) cultivation. this study, we compared uptake and soil chemical properties according type of basal fertilizer (inorganic fertilizer, organic compost) (A: N60%, K40%; B: N70%, K50%; C: N80%, K80%) through field experiment. All treatment plots were treated with same amount applied test results. When increased during cultivation period, there little change EC, NO3-N, Ex. K, no statistically significant difference yield regardless types ratio. However, nitrogen onions tended decrease increase soils a low content, if reduced, deficiency early stage growth may reduce Therefore, recommended A (N60%, K40%) open-field.The use efficiency level. Types Nutrients (%) Nutrient (kg 10a-1) Fertilizer N K2O Inorganic 60, K 40 14.7 ± 1.3 a† 19.9 3.0 41.8 42.8 n.s. 70, 60 13.4 1.6 ab 3.6 32.4 45.3 80, 80 12.3 1.0 b 15.8 2.5 24.9 Organic 14.8 0.9 19.4 2.6 32.2 50.5 14.6 17.5 3.4 37.5 12.1 1.2 16.2 2.7 11.7 27.9 Compost 22.4 4.4 40.2 59.3 13.2 0.6 16.5 1.9 30.1 30.4 12.2 4.3 22.8 †Within each variable, means followed by letter are not differ significantly at p < 0.05 (DMRT).