Decomposition of Rapeseed Green Manure and Its Effect on Soil under Two Residue Return Levels

Wang, Xiaodan; Ma, Hua; Guan, Chunyun; Guan, Mei

doi:10.3390/su141711102

Cited by 6 publications

(9 citation statements)

References 52 publications

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“…The soil nutrient boosting effect of HV and OV was the most significant during the period from straw return to the V3 stage of maize when compared to Fallow and Wheat. It was estimated that more than 50% of fresh green manure could decompose within 30 days (Meena et al., 2018; Wang et al., 2022). The mineral nutrients could be absorbed by maize seedlings or quickly leached by abundant rainfall in July (190 mm).…”

Section: Discussionmentioning

confidence: 99%

Partial substitution of chemical fertilizer by green manure increases succeeding maize yield and annual economic benefit in low‐yield cropland in the Yellow River Delta

Dong,

Gai,

Shi

et al. 2024

Soil Use and Management

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Green manures (GM) combined with fertilizer reduction is an efficient measure to alleviate the environmental issues caused by the overapplication of chemical fertilizer. However, both the environmental and economic benefits remain unclear in coastal regions that are affected by both soil salinization and climate change. A field experiment was conducted in low‐yield cropland in the Yellow River Delta to explore the effects of green manure rotation combined with fertilizer reduction on the soil environment and economic sustainability. Two GM species, Vicia villosa (HV) and Orychophragmus violaceus (OV), a traditional winter wheat (Wheat), were grown in winter, with a fallow control (Fallow). In the subsequent maize season, three fertilizer rate treatments, a full rate of 600 kg ha−1 compound fertilizer (F100), 85% of the full rate (F85), and 70% of the full rate (F70), were applied in each former treatment. The results indicated that GM return markedly increased soil total N (TN) and P (TP) before the V6 stage of maize (when maize had 6 leaves). The average TN contents of HV and OV increased by 56.9% and 38.5%, respectively, compared with that of Wheat, while the values for TP were 13.6% and 16.9%. Compared with Fallow, the maize yields of HV and OV increased by 25.6% and 13.8%, respectively, while that of Wheat decreased by 9.1%. The average partial fertilizer productivities (PFPs) for HV and OV increased by 25.3% and 14.0% compared with Fallow, while Wheat decreased by 8.9%. The PFPs for F85 and F70 increased by 19.4% and 37.7%, respectively, compared with F100. Reducing the fertilizer rate to 70% in the HV–maize rotation pattern did not reduce but increased the total net profit and rate of return. Thus, HV–maize rotation combined with 30% fertilizer reduction is suggested for sustainable agriculture in this region.

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Section: Discussionmentioning

confidence: 99%

Partial substitution of chemical fertilizer by green manure increases succeeding maize yield and annual economic benefit in low‐yield cropland in the Yellow River Delta

Dong,

Gai,

Shi

et al. 2024

Soil Use and Management

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“…During the vetch growing season, maximum P uptake by vetch (Anugroho et al, 2009b) might have caused a decrease in soil TP (Figure 2C), which further led to microbial P limitation (Figure 4B). Subsequently, during vetch decomposition, microbes benefitted from the P released from vetch (Wang, Ma, et al, 2022) and increased soil TP (Figure 2C), thus reducing microbial P limitation (Figure 4B). However, the rapid mineralization of legumes may accelerate N cycling and ultimately lead to soil N deficiency during the decomposition season (Gaskell & Smith, 2007; Watthier et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Subsequently, during vetch decomposition, microbes benefitted from the P released from vetch (Wang, Ma, et al, 2022) and increased soil TP (Figure 2C), thus reducing microbial P limitation (Figure 4B). However, the rapid mineralization of legumes may accelerate N cycling and ultimately lead to soil N deficiency during the decomposition season (Gaskell & Smith, 2007;Watthier et al, 2019).…”

Section: Relationship Among Microbial Metabolic Limitation Root- and ...mentioning

confidence: 99%

The life state of smooth vetch regulates the seasonal dynamics of microbial nutrient limitations in citrus orchards

Zhang,

Xiao,

Zeng

et al. 2024

Land Degrad Dev

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Cover crops improve soil fertility in orchard ecosystems, however, the response of soil microbial metabolism to fruit tree interactions with cover legumes at different stages of the life cycle remains uncertain, thereby limiting our understanding of the mechanisms that regulate nutrient cycling in orchards with cover crop management. Here, the characteristics of microbial energy (carbon, C) and nutrient (nitrogen, N or phosphorus, P) metabolism in the citrus rhizosphere and bulk soil in orchards were analyzed with two managements, that is, smooth vetch (Vicia villosa Roth var. glabresens Koch) cover and clean tillage, using an extracellular enzymatic stoichiometry model. Microbial C limitation was significantly reduced by cover during the vetch growing season owing to the resulting higher plant root C and soil organic C content. Competition for N between plants and microbes in the bulk soil might lead to significant microbial N limitation in covered orchards during the vetch‐decomposition season, presumably owing to a significant increase in citrus root N and a concomitant decrease in bulk soil total N. Partial least squares path modeling showed that citrus root nutrient contents negatively affected microbial C limitation, while soil nutrients negatively affected microbial relative nutrient limitation in covered orchards. Conversely, both effects were reversed by tillage. Smooth vetch cover mitigated microbial C limitation, and the microbial relative N/P limitation was also influenced by the life state of smooth vetch. Our study highlights the importance of changes in microbial metabolism driven by seasonal nutrient dynamics for understanding soil nutrient cycling and optimizing cover‐legumes management in orchards.

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“…Soil microhabitat (such as soil type, soil pH, soil nutrient content, and soil microbial activity) also signi cant effect on green manure decomposition (Watthier et al 2020; Carrasco-Barea et al 2022). The relatively higher enzyme activities found in the mature rubber plantation (Table 1), favor microbial activity and contribute to kudzu decomposition (Wang et al 2022). This is consistent with the results of Ye et al (2014) who indicated that soil microorganisms together with soil enzymes promote the transformation and cycle of various organic matter residues that lets the soil keep normal metabolic functions.…”

Section: Factors Kudzu Decompositionmentioning

confidence: 99%

Improving soil pH, nutrient concentrations, and enzyme activities by green manure returning in young and mature rubber plantation on Hainan Island, China

Yang²,

Jiang³

et al. 2023

Preprint

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Background Studying green manure decomposition in various returning methods can establish a scientific foundation for farmland nutrient management. Methods In a rubber plantation on Hainan Island, China, utilized the nylon mesh bag method to imitate the decomposition of kudzu (whole plant, stem, and leaf) under two returning methods (mulching and burying) in two different sites (young and mature rubber plantations). The decomposition rate and nutrient release dynamics of kudzu and investigated the impact of kudzu returning on various soil properties such as soil pH, soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), nitrate nitrogen (NO3−-N), ammonium nitrogen (NH4+-N), available phosphorus (AP), and enzyme activities were analyzed. Results Compared with mulching, the burying returning method significantly increased the kudzu decomposition rate and nutrient release proportions. After 270 days, more than 80% of the C, N, and P in different components of kudzu were released. The decomposition rate was found to be more affected by the initial soil factors than by the endogenous nutrients of kudzu. Compared with CK, all kudzu treatments led to significant increases in soil enzyme activities and soil pH, SOC, NO3−-N, and AP concentrations in two rubber plantations. The TN and NH4+-N concentrations were significantly increased in mature rubber plantations, while the TP was the opposite. Conclusion The kudzu returned can effectively alleviate soil acidic, improve soil nutrient availability, regulating soil enzyme activities of the rubber plantation in the short-term. These results provide a scientific basis for the rational application of kudzu in rubber plantations.

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Decomposition of Rapeseed Green Manure and Its Effect on Soil under Two Residue Return Levels

Cited by 6 publications

References 52 publications

Partial substitution of chemical fertilizer by green manure increases succeeding maize yield and annual economic benefit in low‐yield cropland in the Yellow River Delta

Partial substitution of chemical fertilizer by green manure increases succeeding maize yield and annual economic benefit in low‐yield cropland in the Yellow River Delta

The life state of smooth vetch regulates the seasonal dynamics of microbial nutrient limitations in citrus orchards

Improving soil pH, nutrient concentrations, and enzyme activities by green manure returning in young and mature rubber plantation on Hainan Island, China

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