Effects of Nitrogen and Phosphorus Fertilization on Seasonal Changes and Retranslocation of Nutrition in Foliage and Twig of Pinus rigida and Larix kaempferi
Lee, I.K.(Korea Forest Research Institute, Seoul, Republic of Korea)E-mail:[email protected] | Son, Y.W.(Korea University, Seoul, Republic of Korea)
Effects of nitrogen and phosphorus fertilization on seasonal changes of nutrient content in tree components, and retranslocation N and P in foliage and twig were determined in adjacent 41-year-old plantations of Pinus rigida Miller and Larix kaempferi Gordon on a similar soil in Yangpyeong, Gyeonggi Province. In general, foliage N and P concentrations of L kaempferi were significantly higher than current and 1-year-old foliages of P. rigida. N and P concentrations were higher in foliage than in twigs for both tree species. However, there were no significant differences in foliage and twig N and P concentrations with ages.
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