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The experiment was carried out to observe plant growth under different nitrogen level and evaluate effect of nitrogen combination with phosphorus and potassium on carrot, cabbage, onion, potato, and tomato in Tsukuba International Cooperation Center. Root weight of carrot decreased when nitrogen was applied excess, at 200% It was highest at 100% in both with PK and without PK. | Evaluation of growth performance of different kinds of vegetables under different level of nitrogen application
