Performance of switchgrass and Miscanthus genotypes on marginal land in the Yellow River Delta

Zheng, Chengshi; Iqbal, Yasir; LaBonte, Nicholas R.; Guo-rong, Sun; Feng, Hui; Yi, Zili; Xiao, Liang

doi:10.1016/j.indcrop.2019.111773

Cited by 30 publications

(32 citation statements)

References 36 publications

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“…The soil (collected in May 2014 with a depth of 0–20 cm) is clay soil with a pH of 9.60, electrical conductivity of 966.0 μS/cm, total organic matter content of 10.02 g/kg, total nitrogen content of 2.00 g/kg, total phosphorus content of 0.47 g/kg, and total potassium content of 24.66 g/kg. It is classified as moderately saline‐alkaline according to Zheng et al (2019). Also, the climatic conditions including monthly average air temperature and monthly rainfall during the Miscanthus growing seasons are presented in Table S1.…”

Section: Methodsmentioning

confidence: 99%

“…Miscanthus is a perennial genus producing high yield and having environmentally beneficial characteristics with multi‐utilization potential. It is currently an important eco‐industrial crop for the bio‐refinery industry (Heaton et al, 2009; Lewandowski et al, 2003; Zheng et al, 2019). Its strong tolerance to various environmental stresses such as heavy metal contamination (Barbosa et al, 2015; Sun et al, 2021), flooding (Mann et al, 2013), and drought (Shepherd et al, 2020) suggests a potential for phytoremediation use.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative assessment of the potential for soil improvement by planting Miscanthus on saline‐alkaline soil and the underlying microbial mechanism

Zheng

et al. 2021

GCB Bioenergy

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Phytoremediation using Miscanthus is a valuable technique for the restoration of saline‐alkaline soil, but the potential is not quantified. To assess this potential, a 5 years field experiment was conducted on saline‐alkaline soils with three genotypes of Miscanthus and an unplanted control. The bulk soil (0–20‐cm depth) physicochemical properties were measured annually from 2015 to 2018, while the bacterial and fungal community structures of the rhizosphere soil were investigated by high‐throughput sequencing after 5 years under Miscanthus (2018). The results showed that Miscanthus cultivation on saline‐alkaline soil reduced soil salinization and improved soil fertility on this site. Specifically, compared with the blank control, the five‐years Miscanthus cultivation (mean of three different genotypes pooled) decreased the soil pH by 0.33 units (8.78–8.45) and electrical conductivity by 23.4 μS/cm (226.7–203.3 μS/cm), as well as increasing soil organic matter content from 18.9 to 34.9 g/kg and total potassium content from 15.2 to 18.0 g/kg. In addition, the soil improvement was more pronounced with a longer duration of growth. Miscanthus remediates saline‐alkaline soils by altering the microbial community compositional abundance rather than its diversity. The improvement is due to enrichment of beneficial bacteria leading to soil desalinization (e.g., by Gemmatimonadaceae), litter decomposition (e.g., by Chitinophagaceae), plant growth promotion (e.g., by Micrococcaceae), and the reduction of harmful fungi (e.g., Pleosporales and Chitinophagaceae). Soil pH, electrical conductivity, organic matter, and total potassium were the main physicochemical properties affecting bacterial and fungal communities. Our results quantify the soil improvement potential of Miscanthus and clarify the underlying microbial mechanisms, laying a solid foundation for further implementation of saline‐alkaline soil phytoremediation using Miscanthus. In the future, more extensive multi‐location trials are required to assess if these improvements are seen across a wide diversity of environments.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantitative assessment of the potential for soil improvement by planting Miscanthus on saline‐alkaline soil and the underlying microbial mechanism

Zheng

et al. 2021

GCB Bioenergy

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“…Based on the outstanding performance on the saline‐alkaline land in the Yellow River Delta area, three genotypes, including Miscanthus sinensis , Miscanthus lutarioriparius , and one interspecies hybrid ( M. lutarioriparius (♂) × M. sinensis (♀)), were selected as the research material (Zheng et al, 2019). Seeds of M. sinensis were open pollinated and collected from the experimental stations at Liuyang (E113°04′E, N28°10′N).…”

Section: Methodsmentioning

confidence: 99%

“…Miscanthus, a C 4 perennial grass, has been widely accepted as a promising eco-industrial crop, because of its high resource use efficiency and wider adaptability to diverse environmental conditions (Harvolk et al, 2014;Jihoon & Dosoon., 2012;Yan et al, 2011). However, to avoid competition with food crops, marginal lands especially saline-alkaline soil must be exploited to grow industrial crops for the populated countries like China (Gopalakrishnan et al, 2011;Lewandowski et al, 2003;Zheng et al, 2019). A case study in China has estimated the potential of marginal lands to produce Miscanthus biomass, which is 3.85 × 10 7 t/y of which contribution of saline-alkaline soil is 28.49% (Xue et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“Two‐steps” seed‐derived plugs as an effective propagation method for the establishment of Miscanthus in saline–alkaline soil

et al. 2021

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Miscanthus, a perennial rhizomatous C4 grass, has emerged as a promising lignocellulosic crop. To avoid competition with food crops, marginal lands especially saline–alkaline soil are being recommended to grow Miscanthus across China. However, the challenges such as high cost and low reproduction coefficient associated with the propagation methods are impeding its large‐scale plantation in saline–alkaline soil. In this study, a “two‐steps” propagation method was designed, which was comprised of two phases: (1) seedling cultivation and (2) seedling strengthening. The parameters (substrate composition and plug size) for this method were determined. The optimal substrate composition of the seedling bed for M. sinensis, M. lutarioriparius, and their interspecific hybrids was peat and perlite at a ratio of 3:2, 3:1, and 3:3 by volume, respectively. The seedlings were transplanted into the plugs to deliver robust plantlets. The most appropriate plug size for M. sinensis, M. lutarioriparius, and their interspecific hybrids was 50 plugs (50 cm3/plug), 72 plugs (40 cm3/plug), and 72 plugs (40 cm3/plug), respectively. Three propagation methods, that is, direct sowing of seeds, rhizomes plantation, and “two‐steps” seed‐derived plugs for M. lutarioriparius were compared in saline–alkaline soil over 3 years (2014, 2015, and 2016). The establishment rate of the seeds directly planted was poor (zero). The performance (e.g., biomass yield) of the plants derived from the “two‐steps” seed‐derived plugs was better than that of the plants derived from rhizomes directly planted. Therefore, the “two‐steps” seed‐derived plugs can be regarded as an effective propagation method to upscale Miscanthus cultivation in saline–alkaline soil.

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“…Perennial plants generally need a few years to reach a stable level of performance ( Jones et al, 2016 ; Xu et al, 2017 ; Stolarski et al, 2018 ). For example, comparison of morphological traits between different Miscanthus (a rhizomatous perennial species) genotypes has been generally conducted using data collected after the third year of planting ( Xiang et al, 2018 ; Zheng C. et al, 2019 ). This should also be the case for perennial ramie.…”

Section: Discussionmentioning

confidence: 99%

Seasonal Nutrient Cycling and Enrichment of Nutrient-Related Soil Microbes Aid in the Adaptation of Ramie (Boehmeria nivea L.) to Nutrient-Deficient Conditions

Song

Iqbal

et al. 2021

Front. Plant Sci.

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The breeding for varieties tolerant of adverse growing conditions is critical for sustainable agriculture, especially for ramie (Boehmeria nivea L.). However, a lack of information on the tolerance of ramie to nutrient-deficient conditions has hindered efforts to breed ramie varieties tolerant of such conditions. The main objective of this study was to explore the tolerance strategies of ramie plants under poor soil conditions using long-term (8–9 years) field trials. Genotypes of Duobeiti 1 and Xiangzhu XB were highly tolerant of poor soil conditions. The contributions of seasonal nutrient cycling and rhizobacteria to the ability of ramie to tolerate poor soil were tested. Nitrogen and phosphorus retranslocation to the root at the end of the growing season helped ramie adapt to poor soil conditions. The contribution of the microbial community was analyzed using high-throughput Illumina MiSeq sequencing technology. The enrichment of beneficial bacteria (mainly Bradyrhizobium, Gaiella, and norank_o_Gaiellales) and the reduction of harmful fungi (mainly Cladosporium and Aspergillus) also contributed to the ability of ramie to tolerate poor soils. The results of this study provide new insight into the ability of ramie to tolerate adverse conditions and aid future efforts to breed and cultivate ramie tolerant of adverse conditions.

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Performance of switchgrass and Miscanthus genotypes on marginal land in the Yellow River Delta

Cited by 30 publications

References 36 publications

Quantitative assessment of the potential for soil improvement by planting Miscanthus on saline‐alkaline soil and the underlying microbial mechanism

Quantitative assessment of the potential for soil improvement by planting Miscanthus on saline‐alkaline soil and the underlying microbial mechanism

“Two‐steps” seed‐derived plugs as an effective propagation method for the establishment of Miscanthus in saline–alkaline soil

Seasonal Nutrient Cycling and Enrichment of Nutrient-Related Soil Microbes Aid in the Adaptation of Ramie (Boehmeria nivea L.) to Nutrient-Deficient Conditions

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