Changes in fineroot growth dynamics in response to phosphorus application in an Acacia mangium plantation in Vietnam

Thang, Nguyen Toan; Lam, Vu Tien; Son, Nguyen Huy; Do, Tran Van; Thuyet, Dang Van; Trung, Phung Dinh; Sam, Pham Dinh; Quy, Tran Hoang; Phương, Nguyễn Thị Thu; Huyen, Ly Thi Thanh; Thịnh, Nguyễn Hữu; Tuấn, Nguyễn Văn; Duc, Dao Trung; Ha, Dang Thi Hai; Trung, Duong Quang; Luong, Ho Trung; Anh, Nguyen Thi Hoai

doi:10.1007/s11056-019-09763-4

Cited by 5 publications

(5 citation statements)

References 40 publications

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“…The dependence of fine-root production on the soil water content and fertility has previously been reported by Canham et al (2015), who found higher levels of fine-root production in soil with higher moisture content and fertility. Similarly, Nguyen et al (2019) observed higher levels of fine-root production in a plantation during rainy season compared with dry season and in a fertilisation treatment compared with a non-fertilisation treatment and concluded that this was due to the greater ability of larger numbers of fine-roots to absorb nutrients and water efficiently. Thus, fine-root biomass and production are also higher in the 0-20 cm soil layer, which may also be related to the greater oxygen content in shallower layers (Neira et al 2015).…”

Section: Discussionmentioning

confidence: 94%

“…The soil has a pH of 3.7 and an organic matter content of 2.7%, nitrogen content of 0.18%, phosphorus content of 2.3 mg P 2 O 5 100 g −1 soil, potassium content of 3.4 mg K 2 O 100 g −1 soil and a soil bulk density of 1.21 g cm -3 . The soil comprises 58.3% sand, 21.9% loam and 19.8% silt (Nguyen et al 2019).…”

Section: Description Of the Study Sitementioning

confidence: 99%

“…Fine-roots are considered an important source and sink of nutrients in terrestrial biogeochemistry (Gordon & Jackson 2000). The production of fine-roots varies with vegetation type, edaphic and climate conditions, and geographical location (Inagaki et al 2009) Even at the same site, fine-root production and dynamics vary between seasons, nutrient levels and soil depths (Lai & Tran 2019, Nguyen et al 2019.…”

Section: Introductionmentioning

confidence: 99%

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Fine-Root Vertical Profile, Production, Mortality and Decomposition in an Acacia Plantation in North-East Vietnam

Tran¹

2020

JTFS

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Fine-roots drive plant growth and influence the global carbon cycle. Thus understanding their production and distribution is useful for plantation management. Therefore, in the present study, the vertical distribution and production of fine-roots were investigated in a 2-year-old Acacia plantation in Vietnam that had a planting density of 1100 trees ha-1. A 30 m × 30 m plot was established in the plantation and field data were collected using sequential soil core sampling and the litter bag technique. The continuous inflow method was used to estimate fine-root production, mortality and decomposition during spring, summer, fall and winter. More than 78.0% of the fine-roots were distributed in the 0-20 cm soil layer while less than 4.0% were distributed in the 50-80 cm later. The proportion of fine-roots in the 0-20 cm layer was greater in summer (81.0%) than in winter (78.0%), while the reverse was true in the 50-80 cm layer (summer 2.3%, winter 3.6%). The total fine-root production, mortality and decomposition in the study area were 9.90, 8.39 and 7.07 tonnes ha-1 year-1 respectively and all three of these parameters were seasonally dependent, being higher in summer (> 2.5 g m-2 day-1) than in winter (< 1.5 g m-2 day-1).

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Section: Discussionmentioning

confidence: 94%

Section: Description Of the Study Sitementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fine-Root Vertical Profile, Production, Mortality and Decomposition in an Acacia Plantation in North-East Vietnam

Tran¹

2020

JTFS

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“…Phosphorus availability in the soil is the main factor that controls root growth and development; application of phosphorus in deficient soil is much effective in proliferation of plant roots especially in early plant growth stage (Lynch et al, 2011). Almost 143 per cent more fine root production as compared to controlled condition in Acacia mangium was recorded when 600 kg ha -1 yr -1 of phosphorus fertilizer was added (Thang et al, 2020).…”

Section: Fertilizer Applicationmentioning

confidence: 99%

Tree Root Dynamics: An Essential Tool to Combat Root Competition in Agroforestry

Kumar¹,

Manojkumar²,

Behera³

2022

EEC

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Tree crop competition in agroforestry systems prevails in unmanaged, improper planned agroforestrysystems. Due to reduced crop yield in the system farmers regarded many agroforestry systems aseconomically non-viable. Mechanical measures are effective in reducing competition between trees andcrops because of their high initial investment farmers are unable to take suitable measures. The aim of thispaper is to signify the importance of knowledge on root dynamics, which helps a lot in reducing the rootcompetition in the agroforestry systems. This paper discusses the selection of trees with complementarycharacter to the crop, effects of irrigation, fertilization, cultural and tending operation on tree root growth.

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“…Low levels of soil phosphorus (P) exert significant limitations on plant growth in the rainforests of TTHP [157]. Accordingly, P is an important plant nutrient influencing woody growth on (historically rainforest-covered) soils in acacia plantations, especially during early growth after replanting [155,158,159]. In Vietnam, acacia farmers using fertilizers typically apply 100-200 g of an NPK fertilizer per tree mix at planting, whereby the effects of nitrogen (N) and potassium (K) are poorly understood.…”

Section: Configurations Of Acacia Plantation Management: Plot Weedingmentioning

confidence: 99%

Acacia Plantation Development and the Configuration of Tree Farmers’ Agricultural Assets and Land Management—A Survey in Central Vietnam

Cochard

Ngo³

2021

Land

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Since 1990 acacia-based tree plantations have fast expanded in Vietnam, now supporting a multi-billion-dollar export-oriented wood industry which is transforming from woodchip production to value-added products. Within this dynamic context, tree farmer associations have started to produce sawlogs under FSC (Forest Stewardship Council) certification. In this paper, we retrace the development of plantation assets, investigating farmers’ current livelihoods and land management, specifically considering various aspects of sustainability. We interviewed 180 tree farmers in three districts (lowland–upland regions) of Thừa Thiên Huế Province, including sawlog producers with and without FSC and smallholder producers of woodchips. Acacia planting in ‘barren lands’ was initiated through state programs in the 1990s (low-/midlands) and 2010s (uplands). Farmers now producing FSC sawlogs were among the first to gain forestland tenure; they now own large plantations (on good terrain), are in tune with policies and maintain resources/capacities to adopt management in line with FSC standards. Yet, most farmers also retain plots for easy-to-manage and low-risk woodchip production. Soil/vegetation conservation depends on farmers’ status/capacities and environmental awareness; FSC membership added economic-political benefits. Findings are discussed within a regional historic context. Plantations contribute to economic development, but issues persist/emerged in terms of land equity and environmental governance, risks (e.g., plant pathogens), and spaces/impetus for farm-based innovation and adaptiveness.

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Changes in fineroot growth dynamics in response to phosphorus application in an Acacia mangium plantation in Vietnam

Cited by 5 publications

References 40 publications

Fine-Root Vertical Profile, Production, Mortality and Decomposition in an Acacia Plantation in North-East Vietnam

Fine-Root Vertical Profile, Production, Mortality and Decomposition in an Acacia Plantation in North-East Vietnam

Tree Root Dynamics: An Essential Tool to Combat Root Competition in Agroforestry

Acacia Plantation Development and the Configuration of Tree Farmers’ Agricultural Assets and Land Management—A Survey in Central Vietnam

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