Influence of green manure and rice straw management on soil organic carbon, enzyme activities, and rice yield in red paddy soil

Li, Tao; Gao, Jieying; Bai, Lei; Wang, Yanan; Huang, Jing; Kumar, Mahendar; Zeng, Xibai

doi:10.1016/j.still.2019.104428

Cited by 72 publications

(45 citation statements)

References 38 publications

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“…The combined application of organic and mineral fertilizers has a positive effect on soil microbial because soil properties, e.g., organic matter, bulk density, enzyme activities, were improved, while the investment of only mineral fertilizer resulted in decreasing in microbial diversity (Shen et al, 2010;Voisin et al, 2014;Nie et al, 2018b;Zhou et al, 2020a). In the present study, the incorporation of rice straw and green manure improved soil properties (Table 3) that affect microbial communities positively, consistent with what already reported (Li et al, 2019;Zhou et al, 2020a). Moreover, the abundance of total bacteria cells was also higher in FSM and FSMM treatments than in F and FS soils (Fig.…”

Section: Discussionsupporting

confidence: 91%

Effects of different fertilization practices on anammox activity, abundance, and community compositions in a paddy soil

Sun

Luo

et al. 2021

Soil Ecol. Lett.

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The return of crop residue and green manure into agricultural soil is known to be important agricultural management strategies, yet how they affect the anammox process remains poorly characterized. A field experiment containing four treatments: chemical fertilizer (F), F plus rice straw (FS), FS plus green manure (FSM), FSM with integrated management (FSMM), was performed to examine the effects of incorporation of rice straw and green manure residues on anammox. The results showed that the anammox activities in FS and FSM treatments (0.65 and 0.80 nmol N g -1 soil h -1 , respectively) were significantly lower than those in F and FSMM treatments (1.60 and 1.28 nmol N g -1 soil h -1 , respectively). Anammox contributed 4.07%-4.95% of total N loss in soil incorporated with residues, lower than soil treated with chemical fertilizer only (9.13%), the remaining being due to denitrification. However, the abundance of the hzsB gene (the hydrazine synthase β-subunit gene) in FS and FSM treatments (1.13 Â 10 6 and 1.18 Â 10 6 copies g -1 soil) were significantly higher than soil using chemical fertilizer only (7.49 Â 10 5 copies g -1 soil) while showed no significant difference with FSMM treatment (8.81 Â 10 5 copies g -1 soil). Illumina sequencing indicated that Brocadia was the dominant anammox genus, following by Scalindua and Kuenenia. Anammox bacterial diversity was altered after 4-year incorporation of rice straw and green manure, as shown by α-diversity indices. We concluded that rice straw and green manure incorporated with mineral fertilizer reduce N removal from paddy soil in terms of anammox in spite of stimulating anammox bacterial growth.

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Section: Discussionsupporting

confidence: 91%

Effects of different fertilization practices on anammox activity, abundance, and community compositions in a paddy soil

Sun

Luo

et al. 2021

Soil Ecol. Lett.

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“…Paddy soil exhibits a high level of organic carbon content, an evident trend of carbon sequestration, and a great potential for carbon fixation, which is an important part of the construction of soil carbon sequestration capacity to reduce greenhouse gas emission. In recent years, most studies of SOC composition in paddy fields focused on the impact of land use mode, farming practices, or fertilization on its content but less on water management and biochar application [14][15][16]. Related research only focused on the effects of single factors, such as irrigation or biochar, on SOC [13,17].…”

Section: Introductionmentioning

confidence: 99%

Effects of Biochar Application on Soil Organic Carbon Composition and Enzyme Activity in Paddy Soil under Water-Saving Irrigation

Sung-Bum

Chen

Jiang

et al. 2020

IJERPH

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Rice water-saving irrigation technology can remarkably reduce irrigation water input and maintain high yield; however, this technology can also accelerate the decomposition of soil organic matter in paddy fields. The spatial and temporal distributions of soil organic carbon (SOC), water-soluble organic carbon (WSOC), and soil microbial biomass carbon (SMBC) under different water-carbon regulation scenarios were analyzed on the basis of field experiments in the Taihu Lake region in China to explore the effects of biochar application on SOC and its components in water-saving irrigation paddy fields. The response of soil catalase (CAT) and invertase (INV) to biochar application in water-saving irrigated rice fields was clarified. The results showed that water-saving irrigation reduced the SOC content by 5.7% to 13.3% but increased WSOC and SMBC contents by 13.8% to 26.1% and 0.9% to 11.1%, respectively, as compared with flooding irrigation. Nonflooding management promoted the oxidative decomposition of soil organic matter. Two years after straw biochar was added, paddy soil SOC content under water-saving irrigation was increased by 4.0% to 26.7%. The WSOC and SMBC contents were also increased by 4.0% to 52.4% and 7.0% to 40.8%, respectively. The high straw biochar addition rate exhibited great impact on SOC. Remarkable correlations among SOC, WSOC, and SMBC were observed, indicating that the addition of straw biochar improved soil labile C, such as WSOC and SMBC, which promoted SOC transformation and stability in paddy soil under water-saving irrigation. Soil CAT and INV were related to SOC conversion. In conclusion, the combination of water-saving irrigation and straw biochar addition was beneficial to the improvement of soil properties and fertility of paddy fields.

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“…The present study showed an increase in the urease activity in the MCH12 treatment, since the biochar that has high molecular weight makes an association with the enzyme (Bera et al, 2016), making that high concentrations of biochar may have higher activities due to protection. In addition, organic manure is rich in enzymes and provides nutrition and environment for the growth of microorganisms and the production of enzymes (Li et al, 2019). So, when biochar is associated with nitrogen compounds, the growth stimulation occurs synergistically.…”

Section: Enzymatic Activitiesmentioning

confidence: 99%

Impact of coffee biochar on soil carbon, microbial biomass and enzymatic activities in Semiarid Entisol cultivated with maize

Filho

Medeiros

Lima

et al. 2020

Rev. Bras. Geog. Fis.

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The use of biochar can bring benefits such as long-term carbon sequestration and water use efficiency, being an alternative for semiarid regions. The objective of this study was to evaluate the impact of coffee biochar applied in sandy Entisol on maize growth, and soil chemical, microbial and biochemical attributes. The experimental design was completely randomized, distributed in a 2 x 4 + 1 factorial scheme, two types of wastes coffee ground (MCG) and coffee husks (MCH), four doses (4, 8, 12 and 16 Mg ha -1 ) and control (CONT), without biochar. All treatments received organic fertilization with manure. Coffee biochar applied to sandy soil cultivated with maize, as predicted, increased the total soil C content, mainly coffee husk biochar that increases twice the C content compared to the control. Nutrient and some enzyme activities of soils were improved with increasing coffee biochar doses. Microbial biomass of soils amended with the biochars MCH16 and MCH12 showed an increase of 100 and 116%, respectively. This study demonstrated a clear response of the soil nutrients, microbial community and enzyme activities related to types and doses of biochar. Therefore, the use of coffee biochar is recommended for increasing the quality of sandy soils in the Brazilian semi-arid.

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Influence of green manure and rice straw management on soil organic carbon, enzyme activities, and rice yield in red paddy soil

Cited by 72 publications

References 38 publications

Effects of different fertilization practices on anammox activity, abundance, and community compositions in a paddy soil

Effects of different fertilization practices on anammox activity, abundance, and community compositions in a paddy soil

Effects of Biochar Application on Soil Organic Carbon Composition and Enzyme Activity in Paddy Soil under Water-Saving Irrigation

Impact of coffee biochar on soil carbon, microbial biomass and enzymatic activities in Semiarid Entisol cultivated with maize

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