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http://dx.doi.org/10.14578/jkfs.2020.109.2.179

Analysis of the Current Status of Weeding Operation and Crop Tree Growth Across Planting Periods  

Park, Byung Bae (Department of Environment and Forest Resources, Chungnam National University)
Seo, Jeong Min (Department of Environment and Forest Resources, Chungnam National University)
Han, Si Ho (Department of Environment and Forest Resources, Chungnam National University)
Youn, Woo Bin (Department of Environment and Forest Resources, Chungnam National University)
Jung, Yeon Kuk (Korea Forest Service)
Namgung, Bo Sun (Korea Forest Service)
Lee, Sang Jic (Korea Forest Service)
Lee, Sang Ick (Department of Environment and Forest Resources, Chungnam National University)
Publication Information
Journal of Korean Society of Forest Science / v.109, no.2, 2020 , pp. 179-188 More about this Journal
Abstract
Weeding refers to the process of removing weeds around crop trees, which cause competition in nutrients, moisture, and light, and has a great effect on the early growth and survival of crop trees for establishing forest resources. This study was conducted to find out the timing and method of weeding that is the most suitable for the major afforestation species in national forests. We investigated (1) weeding time and frequency for each afforestation species and (2) the height of crop trees and the length of weeds. Up to 99% weeding operation was carried out until 5 years following afforestation. Pinus densiflora, Larix kaempferi, Chamaecyparis obtusa, Prunus sargentii, and Betula platyphylla plantations accounted for more than 70% of the total weeding sites. Once-a-year weeding process was conducted from late June to late July (67%), and twice-a-year weeding process was the highest in June-August by 31%. Most species were shorter than the weeds until the first and second year of planting, but the height of the crop trees was higher than that of the weeds by 48% in average from the third year. Therefore, from the third year of afforestation, except for some species, it is possible to reduce the cost of weeding operations while reducing nutrient competition by the weeds through the removal of weed sprouts, mainly woody weeds, rather than clear cutting. This study contributes to efficiently develop forest resource establishment while reducing operational costs through a detailed weeding schedule and species-specific method.
Keywords
competition; herbaceous and woody weed; regional office of Korea Forest Service; silvicultural systems; weeding frequency;
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