Soil Respiration, Microbial Biomass and Nutrient Availability in Soil After Addition of Residues with Adjusted N and P Concentrations

Nguyen, Trung Ta; Marschner, Petra

doi:10.1016/s1002-0160(17)60297-2

Cited by 41 publications

(19 citation statements)

References 37 publications

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“…ey observed that 40-62% of soluble alkalinity in canola and chickpea residues were responsible for the pH increases. It is obvious from these, and many other studies [69], that the residues of dicots, particularly legumes, have high alkalinity and produce larger effects on soil pH change than monocots. e pH increase after residue addition often reaches a peak and declines thereafter as a result of nitrification.…”

Section: Applied and Environmental Soil Sciencementioning

confidence: 87%

“…For instance, Forján et al [68] found initial increases in soil pH when they applied a mixture of sludge from a bleach plant, urban solid waste and mine wastes, and a mixture of sludge from a purification plant, wood chips, and remnants from agri-food industries to the soil. Furthermore, the addition of young Kikuyu (Pennisetum clandestinum L.) shoots also increased soil pH by up to one pH unit [69]. e major causes of this pH change is due to the (i) release of excess residue alkalinity attributed to the basic cations such as Ca, K, Mg, and Na [70]; (ii) decarboxylation of organic anions that occurs during C mineralisation, causing the consumption of protons and release of OH − [71,72]; (iii) ammonification of the residue N; (iv) nitrification of mineralised residue N; and (v) association/dissociation of organic compounds [70].…”

Section: Raw and Combusted Organic Materialsmentioning

confidence: 99%

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The Role of Soil pH in Plant Nutrition and Soil Remediation

Neina

2019

Applied and Environmental Soil Science

733

301

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In the natural environment, soil pH has an enormous influence on soil biogeochemical processes. Soil pH is, therefore, described as the “master soil variable” that influences myriads of soil biological, chemical, and physical properties and processes that affect plant growth and biomass yield. This paper discusses how soil pH affects processes that are interlinked with the biological, geological, and chemical aspects of the soil environment as well as how these processes, through anthropogenic interventions, induce changes in soil pH. Unlike traditional discussions on the various causes of soil pH, particularly soil acidification, this paper focuses on relationships and effects as far as soil biogeochemistry is concerned. Firstly, the effects of soil pH on substance availability, mobility, and soil biological processes are discussed followed by the biogenic regulation of soil pH. It is concluded that soil pH can broadly be applied in two broad areas, i.e., nutrient cycling and plant nutrition and soil remediation (bioremediation and physicochemical remediation).

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Section: Applied and Environmental Soil Sciencementioning

confidence: 87%

Section: Raw and Combusted Organic Materialsmentioning

confidence: 99%

The Role of Soil pH in Plant Nutrition and Soil Remediation

Neina

2019

Applied and Environmental Soil Science

733

301

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“…For example, crop residues with C/N > 25 and C/P > 200 are decomposed slowly and induce temporary net nutrient immobilisation in the microbial biomass (Alamgir et al 2012;Chen et al 2014;Trinsoutrot et al 2000). In contrast, mixing of crop residues with low C/nutrient ratio (C/N < 20; C/P 89) into the soil leads to net nutrient release (Nguyen and Marschner 2017). Recently, Erinle et al (2018) showed that compared with the control without amendment, available P and labile P pools were several fold higher in the detritusphere of low C/P residue (38), but unchanged with high C/P residue (255).…”

Section: Introductionmentioning

confidence: 99%

Wheat Growth-Induced Changes in Phosphorus Pools in the Crop Residue Detritusphere Are Influenced by Residue C/P Ratio

Erinle

Marschner²

2020

J Soil Sci Plant Nutr

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This experiment was carried out to elucidate the effect of residue C/nutrient ratio on P pools and N availability in wheat rhizosphere. The microcosms included an upper and a lower PVC core with one end of both cores covered by nylon mesh. Wheat was planted in the upper core. To the lower core, crop residues were added as a thin uniform layer on the top mesh. Treatments were control without residue or wheat growth, wheat growth without crop residue, barley straw without or with wheat growth, and barley faba bean residue without or with wheat growth. Sampling was carried out after 14 and 28 days in wheat rhizosphere alone, detritusphere of faba bean residue and barley straw, and in the rhizosphere/detritusphere interface. Mass loss of low C/P faba bean residue was greater than of high C/P barley straw; and mass loss was greater in the detritusphere alone than in the rhizosphere/detritusphere interface. Plant P concentration and P uptake were higher with faba bean residue than with straw and unamended wheat plants. With faba bean, most P pools and N availability, but not microbial biomass N and P, were lower in the rhizosphere/detritusphere interface than detritusphere alone. P pools were higher in detritusphere of faba bean residue than wheat rhizosphere alone. With straw, P pools and MBN were low and not affected by wheat roots. P pools and N availability in the wheat rhizosphere/detritusphere interface were influenced by residue type, and plant nutrient uptake reduced P pools and available N only with low carbon/nutrient faba bean residue.

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“…В хвое минимальное соотношение N : P наблюдалось в III секции. Подстилка с высоким соотношением N : P (>78) разлагается быстрее, чем подстилка с низким соотношением N : P (<26, как к нашем эксперименте), что указывает на возможный дефицит азота для микроорганизмов в данной почве или экосистеме в целом при таком узком соотношении между азотом и фосфором (Nguyen, Marschner, 2017). Вероятно, дефицит азота в данном случае усугублялся очень широким соотношением С : N в опаде сосны, типичным для хвойных растений вообще.…”

Section: результаты и обсуждениеunclassified

Changes in C : N : Р Ratios in Plant Biomass, Soil and Soil Microbial Biomass Due to the Warming and Dessication Effect of Flaring

Дударева

Kvitkina

Yusupov

et al. 2018

DSB

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Climate warming results in significant changes in the structure and functioning of terrestrial ecosystems. The ecosystems situated near oil-well gas flares may be used as model ones for studying warming effect on soil and vegetation. By contrast to regular manipulation experiments where ecopysiological factors are modified or controlled artificially, we used anthropogenically affected condi-tions caused by the gas flaring. Our research was aimed to assess the warming and desiccation effect on the stoichiometric ratios of the principle nutrients (C : N : P) in pine phytomass, soil and soil microbial biomass. Soil organic matter (SOM) and dying microbial biomass were found to be exposed to the increased rate of mineralization under conditions of the abiotic stress. In addition, the de-crease of relative С content in sustainable SOM pools occured along with the increase of C content in the most labile water-soluble pools. Accelerated SOM mineralization decreasing C : N with respect to phosphorus ratio in soil and soil microbial biomass was sufficiently intensified by the decrease in C : N : P in pine needles. Thus, studying changes in stoichiometric ratios of biophylic ele-ments as affected by abiotic factors seems to be prospective and promising methodological approach for predicting terrestrial ecosystem transformations under global climate changes.

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Soil Respiration, Microbial Biomass and Nutrient Availability in Soil After Addition of Residues with Adjusted N and P Concentrations

Cited by 41 publications

References 37 publications

The Role of Soil pH in Plant Nutrition and Soil Remediation

The Role of Soil pH in Plant Nutrition and Soil Remediation

Wheat Growth-Induced Changes in Phosphorus Pools in the Crop Residue Detritusphere Are Influenced by Residue C/P Ratio

Changes in C : N : Р Ratios in Plant Biomass, Soil and Soil Microbial Biomass Due to the Warming and Dessication Effect of Flaring

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