Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue

Zheng, Bo; Marschner, Petra

doi:10.4067/s0718-95162017005000001

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…They found that compared to a single addition, repeated addition increased cumulative respiration per g C added and that this stimulation increased with addition frequency. In their study, addition frequency did not influence microbial biomass C or available N. Zheng and Marschner (2017b) added high or low C/N residue once (d0), twice (d0, 8) or four times (d0, 4, 8, 12). Cumulative respiration, microbial biomass and nutrient availability compared to single addition were lower on d7 with residue added twice or four times, but higher on d15.…”

Section: Introductionmentioning

confidence: 88%

Amendment with high and low C/N residues- Influence of rate, order and frequency

Truong

Marschner

2018

J. Soil Sci. Plant Nutr.

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It is unclear if the effect of residue mixes on soil respiration, microbial biomass and nutrient availability over time is influenced by amendment frequency and how the effect differs from that of the same residues added sequentially. There were six treatments differing in number of amendments and order in which residues were added, total amendment rate in all treatments was 20 g kg -1 with 10 g kg -1 of each high (H) and low (L) C/N residue.In treatment names, order of letters indicates order of residues, e.g. HL is H followed by L. In treatments with two amendments, residues were added on days 0 and 20 at 10 g kg -1 : 10-LH, 10-HL or a 1:1 mixture of L and H added twice [10-(HL)x2]. In treatments with four amendments, residues were added on days 0, 10, 20 and 30 at 5 g kg -1 : 5-HLHL, 5-LHLH, and 5(HL)x4. In 5-HLHL, microbial biomass N (MBN) increased only after the first L addition although available N increased after both additions. Differences between measured and expected value depended on residue addition frequency and parameter. In 10-(HL)x2, MBN, microbial biomass P and C (MBP and MBC) were greater than expected and this was accompanied by lower than expected available N and P. In 5-(HL)x4 on the other hand, the difference between measured and expected MBN and available N changed over time, possibly because the proximity of microbes decomposing different residues changes. The study showed that with repeated addition of H and L, N availability and MBN are influenced by residue rate and order.

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Section: Introductionmentioning

confidence: 88%

Amendment with high and low C/N residues- Influence of rate, order and frequency

Truong

Marschner

2018

J. Soil Sci. Plant Nutr.

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“…Soil physical properties such as texture, structure, water holding capacity, pore size distribution, and pore connectivity, however, may have significant effects on decomposition and mineralization (Cai et al 2016;Zhang and Marschner 2018). Differences in the water holding capacity led to variations in microbial activity and carbon and nitrogen mineralization dynamic (Thomsen et al 1999;Zheng and Marschner 2017). Recent studies have investigated carbon and nitrogen mineralization in treated soils with organic matter (Guo et al 2014;Moreno-Cornejo et al 2014;Sun et al 2016).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Organic Amendment Source on Carbon and Nitrogen Mineralization in Different Soils

Marzi

Shahbazi

Kharazi

et al. 2019

J Soil Sci Plant Nutr

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Soil organic matter is one of the largest stores of carbon and nitrogen in various ecosystems that can crucially improve plant nutrition. The present study was conducted to investigate the effect of organic matter sources on carbon and nitrogen mineralization and also the contemporary comparison of carbon and nitrogen mineralization and nitrogen immobilization in soils amended with different organic treatments. Accordingly, six types of organic amendments were applied to three types of soils, under a constant temperature and moisture at the laboratory scale. The treated soils were incubated 60 and 120 days for nitrogen and carbon mineralization study, respectively. Results showed two decomposition stages, an initial rapid increase in decomposition in the first 20 days followed by a slower stage reaching a steady state condition. The amount of mineralized carbon ranged from 980 to 6860 mg/kg of dry soil for soils incorporating with different types of organic matters. The carbon mineralization kinetic data was well fitted to a second-order kinetic model showing the differences in microbial decomposition resistance of residues contents. The kinetic of carbon and nitrogen mineralization fluctuated similarly but in different scales. Net ammonification of fertilizer group, sheep manure, cow manure, and vermicompost was decreased, whereas in plant residue group, plane tree leaves, corn leaves, and wheat straw was increased. Two nitrification periods (first 10 days and 35 to 60 days) and an immobilization period (10 to 35 days) were observed. After 60 days of incubation of amended clayey soil, the nitrification values in plane tree leaves, corn leaves, wheat straw, municipal waste vermicompost, cow manure, and sheep manure were − 13.98, 14.06, 13.22, 34.88, − 12.25, and − 12.15 mg kg −1 , respectively. The carbon and nitrogen mineralization trends fluctuated due to probably different resistance of substance components to microbial decomposition. Since the nitrate is the main part of inorganic N, therefore, net N mineralization had a similar trend as nitrification in different soils. Those organic residues with high ratios of C/N immobilized the mineral nitrogen, due to the presence of more carbon and a higher nitrogen decomposition rate, resulting in suppressed levels of nitrogen in the amended soil.

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“…Application of organic manures had significant influence on organic carbon depleted arable soils by improving maize productivity and soil physico-chemical properties (Mahmood et al, 2017). Also, residue addition frequency strongly influenced soil respiration, microbial biomass and nutrient availability after addition of low C/N residue, for example, young faba bean (Vicia faba L.) (Zheng and Marschner, 2017).…”

Section: Discussionmentioning

confidence: 99%

Strawberry monocropping: Impacts on fruit yield and soil microorganisms

Lovaisa

Guerrero-Molina

Delaporte-Quintana

et al. 2017

J. Soil Sci. Plant Nutr.

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The objective of this work was to explore the impacts of intensive strawberry monocropping during five years on the fruit-yield and on the microbial soil activity and composition. Field trials were performed in two plots: P1(a soil with five years of consecutive strawberry cropping), and P2 (a soil with just one year of strawberry cropping). Fruit-yield was quantified; total microorganisms and four functional groups (cellulolytics, nitrogen-fixers, phosphate solubilizers, and siderophores producers) were quantified, isolated and characterized in both plots.Total microbial activity was assessed by the hydrolysis of fluorescein-diacetate and soil respiration methods. As results, in P1, a 51 % decrease in fruit-yield was observed, while in P2 it was closer to the yield obtained in P1 during the first and second year of cultivation. Total microbial number and activity were 23 % and 70 % lower in P1 than in P2 at the end of the cropping, respectively. In general, the quantity of total culturable microorganisms and the functional groups analyzed were significantly higher in P2 than in P1 (p< 0.05).The most prevailing bacteria putatively identified were Cellulosimicrobium cellulans, Paenibacillus sp., Azospirillum brasilense, and Burkholderia sp. According to our results, the intensive cultivation of strawberry for several years in the same field exerted a negative impact on the soil quality, affecting the native microbial population, which might be linked to the fruit yield decline.

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Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue

Cited by 6 publications

References 23 publications

Amendment with high and low C/N residues- Influence of rate, order and frequency

Amendment with high and low C/N residues- Influence of rate, order and frequency

The Influence of Organic Amendment Source on Carbon and Nitrogen Mineralization in Different Soils

Strawberry monocropping: Impacts on fruit yield and soil microorganisms

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