Effects of Fish-Meal Application on the Growth of Chinese Cabbages (Brassica Campestris L.) and Soil Chemical Properties

nitrogen requirements by evaluate the effect of the pollack fish-meal incorporation on growth properties of cabbage and soil chemistry. The study was conducted as pot (1/2,000a) test at the Miryang in Korea from May to August 2017. The treatment was divided into two groups; the amount of fish-meal treated were based by comparing the standard application ratio of nitrogen for Chinese cabbage with the nitrogen content of the fish-meal, and the chemical properties and the growth of the cabbage were compared by the treatments of 50%, 100%, 150%, 200% and 250%. The results obtained are following; the ammonia gas was produced from the after 2nd day of incorporated, and the amount of ammonia gas generated was geometrically correlated with the amount of fish processed. The soil pH level after study was lowered to about the pH 5.1 from 32.1 g/pot (1/2,000a). Due to the fish-meal increased the EC, content of Av. P2O5 acid and inorganic nitrogen, and the pH level did not decrease even when the inorganic nitrogen increased at NO3 - ‒N content of 5.4 mg/kg and NH4 + ‒N was higher than 3.3 mg/kg. The SPAD value at the time of cabbage harvest was positive correlation with the amount of fish-meal treated, and the biomass was similar to that of SPAD. The biomass of Chinese cabbage in fish-meal plots were higher than that of conventional treatments, and the weight of the headed cabbage was the highest in T4 (64.1 g/pot). The number of cabbage leaf was the highest in T3 (53.4 g/pot). Based on the above results, it is thought that if the C/N ratio adjusted plant organic resources, methods of mixing and technologies for minimizing pH drop are supplemented, it will be excellent eco-friendly organic resources instead of synthetic nitrogen KCI Citation Count: 0