Effects of Goat Manure and NPK on the Growth of Paraserianthes falcataria (L.) Nielsen in Ex-limestone Mining Soil

Abstract

Limestone mining is the kind of human activities producing negative impacts to the ecosystem stability. Revegetation is one of the efforts to improve the ecosystem of ex-limestone mining soil. Species selection that appropriates with the marginal soil is the key to reach the successfully revegetation. Paraserianthes falcataria (L.) Nielsen is a pioneer species, potential to be planted on ex-limestone mining soil. This research aims to analyze the effect of goat manure and NPK fertilizer to promote the growth of P. falcataria seedlings in ex-limestone mining soil and to find out the optimum dose of those combination treatments. The result showed that the combination of goat manure and NPK fertilizer did not significantly affect height, diameter, total wet weight, total dry weight, shoot-root ratio growth parameters. However, that treatment significantly affected the number of root nodules. These results indicated that P. falcatria is a pioneer species that may adapt quickly to grow in ex-limestone mining soil. The addition of goat manure and NPK fertilizer could improve that soil characteristic and the P. falcatria growth.