Contents of Inorganic Nutrient in Leaf Perilla in Growing Stages Under Plastic Film House Cultivation.

This experiment was conducted to clear up the cause of nutrient physiological disorder and to manage of optimum fertilization for leaf perilla crop under Plastic film house condition in Geum-san area in 2009. A nutrient contents of leaf perilla were analyzed during the growing stages of crop from the first harvest to the last harvest stages, and the data were going to use as the nutritional factors for farms’ activity in the fields. In survey of leaf perilla growing status at five farmers’ fields, it was needed 30 days for growing of 5∼10 stems, 60 days for 10∼15 stems and 45 days for 15∼20 stems of leaf perilla. Contents of nitrogen, phosphorus and potassium in leaf and stem had been kept on some high values in early stages, but it had been decreased in gradually in late stages of growing. Nitrogen and potassium contents were more changeable in leaf than stem, and phosphorus content was kept in more both of leaf and stem than those of nitrogen and potassium. The major macro-nutrient contents of perilla leaf on first of July were 6.34 in N, 0.54 in P, 2.48 in K, 1.98 in Ca and 0.62% in Mg, total uptake amounts of major three elements were 400 kg ha-1 in N, 30 kg ha-1 in P and 250 kg ha-1 in K. Total yield of perilla leaf was 52,000 kg ha-1, and total dry matter was 10,510 kg ha-1 with 8,680 kg ha-1 in leaf dry matter and 1,830 kg ha-1 in stem dry matter.