Soil Properties and Maize Growth Affected by Soil Nutrient Management Practices in Saemangeum Reclaimed Land

Agricultural production in Saemangeum reclaimed land is limited by low organic matter and nutrients content of soil, which lowers crops productivity. One the best ways to improve soil properties yield upland are increase using amendments. To investigate effects amendments on crop productivity improvement properties, we cultivated maize an experimental field with four treatments compost chemical fertilizer (FC), (F), control (C), non-cultivation (N). The increments (OM), available phosphate, calcium potassium ratio (Ca/K ratio) was greatest FC treatment. Organic contents showed increasing trend application soil. treatment increased 6.29 g kg-1, highest among treatments. Available phosphate after harvest 33 mg kg-1 F treatment, 255 kg-1. Ca/K C 4.39 from 2018 2020. On other hand, only (F) did not affected properties. 155% compared that control. It concluded contributed more than building up matter, phosphorus, status Also, Application combined favorable productivity.Regression ratio, 0 - 20 cm layer over time, as influenced (x = day, y characteristic or ratio). Soil characteristics Management Equation R2p-value (g kg-1) 0.000686x + 3.08 0.07 ns N 0.000467x 2.29 0.15 0.000822x 2.94 0.21 0.004379x 2.90 0.56 ** 0.00353x 2.02 0.53 0.00104x 1.68 0.17 0.002317x 1.79 0.00236x 1.92 0.29 * Avail. P2O5 (mg -0.00648x 28.06 -0.000464x 20.80 0.001 0.00271x 28.36 0.01 0.2835x 28.59 0.55