Ameliorant application promotes growth performances of Calliandra calothyrsus Meissn. planted on post-coal mining land

Abstract

Growth performances of plants raised on post-coal mining lands are highly hampered by the unfavourable environment conditions of plant root zones. This study was carried out to find out if the improvement of plan root environment conditions by the application of ameliorants may boost the growth performance (diameter and height) of Calliandra calothyrsus during 6 months after plantation. Twenty-seven replicates of 3 levels of ameliorant treatments (0%v + 0%v, 10%v + 20%v, and 20%v + 10%v of solid decanter + biochar for the M1, M2, and M3, respectively) were applied in compatible arrangement with completely randomized design (CRD) procedure. In each replication, 30 seedlings were planted at 1 m x 2 m spacing. Plant diameter and height were census, a normal distribution test was employed prior to the anova test and mean different was defined by the LSD test. Results showed that diameter growths were significantly affected by the treatment applied. M1, M2, and M3 treatments gave a 1.32 cm, 1.29 cm, and 1.69 cm diameter growth, respectively; and gave a 147.4 cm, 142.6 cm, and 161,9 cm height growth, respectively. We conclude that M3 treatment is a promising ameliorant application to develop further in raising C. calothyrsus on post-coal mining lands.