Abstract

Reforestation of degraded forest land is very important to control economic and ecological functions in a balanced manner. Replanting requires plant species that have rapid growth, can grow in a wide range of climates, and have high economic value. Calliandra mesh (Calliandra calothyrsus Meissen) is a popular multipurpose tree species because it is easy to plant, grows quickly, and sprouts again after being pruned repeatedly and has high economic value. The nature of the calliandra mesh plant means that the development of this plant must be carried out in a sustainable manner to be able to meet the ecological and economic needs of the community. However, with soil conditions that have low N, P, K, C Organic and soil CEC values it will be difficult to grow this plant and develop it. The purpose of this study was to determine the effect of various types of planting media on the growth of calliandra mesh (Calliandra calothyrsus Meissen) seedlings. The research method used a completely randomized design (CRD) consisting of 4’~treatments, namely: P0 = Soil without fertilizer (control), P1 = Soil + Sand + Soil Liquid Fertilizer + Leaf Liquid Fertilizer, P2 = Soil + Sand + Solid Organic Fertilizer, P3 = Soil + Sand + Solid Organic Fertilizer + Soil Liquid Fertilizer + Leaf Liquid Fertilizer. Each treatment was repeated ten times, so a total of 40 experimental units were needed. The results showed that the treatment of various types of planting media had a very significant effect on the increase in the number of shoots, increase in height, increase in the number of leaves, and stem diameter on the growth of calliandra mesh seedlings (Calliandra calothyrsus Meissen). Media soil + sand + solid organic fertilizer + liquid organic fertilizer soil + liquid organic fertilizer leaves is the best media for the growth of calliandra mesh seedlings (Calliandra calothyrsus Meissen), on all observed variables.