Abstract
Lemongrass (Cymbopogon nardus) as cover crop was suitable planted with agroforestry and monoculture system on post-coal mining revegetation land. The study investigated the influence of planting system, varieties, and plant spacing against the lemongrass growth on post-coal mining land under the agroforestry and monoculture system. Two lemongrass varieties were planted under on both planting systems. The growth variables of lemongrass measured were the tillers number per clump, leaf length, and canopy width. The results showed that the planting system and lemongrass varieties were able to increase the growth of lemongrass. Plant spacing treatment was able to increase the tillers number per clump. The agroforestry system was able to increase leaf length and canopy width of lemongrass. However, monoculture system was able to increase the tillers number per clump. The G2 variety had better growth on all measured variables either in agroforestry and monoculture system compared to Sitrona 2 Agribun variety. The plant spacing of 0.5 m × 0.5 m had greater tillers number per clump of lemongrass compared to plant spacing of 1 m × 1 m.
Highlights
Coal mining is part of open-pit mining through forest clearing, land surfaces opening, dredging, and stockpiling
Location and period The study activities were carried out in the nursery area for lemongrass seedling preparation and planting on the post-coal mining revegetation land (1.1 ha) of PT Bukit Asam (Inc.), Muara Enim, South Sumatera, Indonesia (Figure 1). This post-coal mining revegetation land is in other use area (OUA) status, and will be planted based on agroforestry system
The monoculture area was planted with lemongrass monoculture and is located beside to the agroforestry area
Summary
Coal mining is part of open-pit mining through forest clearing, land surfaces opening, dredging, and stockpiling. Mining activities affect environmental qualities, including soil physical, chemical, and biological damage (Soendjoto et al, 2014; Setyaningsih et al, 2018; Lestari et al, 2019). Soil becomes very compact due to heavy equipment activity during mining (Setiadi & Adinda, 2013) or even crumbly which tends to cause land slides, besides microclimate change (Zulkarnain et al, 2014). Plant function and land production will decrease, when the plant growth is disturbed, causing the local ecosystem structure damage (Allo, 2016). Soil compaction is one of the major physical factors that can change soil structure, and productivity (Mueller et al, 2010), besides an affecting plant growth, and depth of plant root penetration (Shukor et al, 2015). Solid soil reduces pore space between soil particles, limiting water and gas exchange (Nawaz et al, 2013)
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Schedule a callMore From: Jurnal Manajemen Hutan Tropika (Journal of Tropical Forest Management)
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