Pola Pertumbuhan Dan Serapan Hara N, P, K Tanaman Bangle (Zingiber Purpureum Roxb.)

Abstract

Growth pattern and nutrient uptake of N, P and K onpurple ginger (Zingiber purpureum Roxb)One of the problems in cultivation of purple ginger (Zingiberpurpureum Roxb) is limited cultivation technology. Therefore, the study on its growth pattern and nutrient uptake of N, P, and K is very importantto support its cultivation technology. The objective of the research was tofind out data of growth pattern, growth rate, nutrient uptake, and simplisiaquality. Field trial was conducted in farmers land in Bogor from May 2001to March 2002. The soil is latosol and the altitude is 250 m asl. Plot sizewas 6 x 1,5m, and plant spacing was 50 x 40 cm. Observation on thegrowth pattern and nutrient uptake were carried out at different ages of : 2,3, 4, 5, 6, 7, 8, 9, and 10 months after planting. Six samples were taken atevery growth stage of the plant. The results showed that the growth rateand the nutrient uptake of N, P, and K linearly increased, in line with theincrease of plant ages. Yield of essential oil at 10 MAP was 12.10 ml/plant. The amount of dry weight accumulation was 701.0 g/plant, to produce417.97 g simplisia/plant needed nutrient uptake of N, P and K, respectivelywas 8.48, 1.72 and 4.02 g/plant