The effect of weeding frequency and timing on the height growth of young sugi (Cryptomeria japonica) in southwestern Japan

Restoration of Degraded Tropical Peatland in Indonesia: A Review

“…The weed intensity on peatlands tends to be higher than that on mineral soils [178], with fast growth and production of 2-3 tons of dry matter/season/hectare [179]. Adequate weed control can minimise the competition with planted seedlings, preventing inhibition of the plant's growth [180]. In the early succession phase in natural forests, high light levels and the availability of water and nutrients can support opportunistic species to grow rapidly so that growth and survival of the target species can be reduced dramatically [181].…”

“…Weed control once every four months in the first year after S. balangeran planting can increase height growth by 40% and diameter growth by 50% compared to a non-weeded control [170]. Effective weed control also increased the average height of Sugi (Cryptomeria japonica) plants by 20% with each additional weeding that was imposed [180]. In Hinoki (Chamaecyparis obtusa), weeding restored plant growth in a short time due to delays in weeding in young plants [182].…”

Individual-level distance-independent-based growth and yield prediction models for long-term Japanese cedar (Cryptomeria japonica)

“…Recently, conifer plantations have matured in Japan, and it is now necessary to consider management of old trees (Miyamoto 2015). Moreover, we need to reduce management costs to improve revenue for forest owners (Fukumoto et al 2017(Fukumoto et al , 2020b(Fukumoto et al , 2021Sakai et al 2019). While promising, our models do not yet address some of the problems currently experienced in the Japanese forestry industry, and further refinement is required to adapt the yield growth models for non-standard treatments.…”