Influence of fire retardant and pyrogenic carbon on microscale changes in soil nitrogen and phosphorus

Gao, Si; DeLuca, Thomas H.

doi:10.1007/s10533-020-00746-8

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…For soils amended with biochar alone, the higher soil N mineralization and nitrification potential (compared to control) did not lead to a relatively higher soil NH 4 + ‐N or NO 3 − ‐N content in surface soils throughout the season (Figure 1). It is likely that the mineralized NH 4 + ‐N and NO 3 − ‐N were immediately taken up by microbes in surface soils where the C‐rich, N‐poor biochar might have resulted in N‐limitation in soil microsites and increased microbial N demand in the ‘charosphere’ (Gao et al, 2019; Gao & DeLuca, 2021). In the biochar plots, the lower inorganic N content in surface soils and the higher water holding capacity might explain the lower N leaching compared to the control (Figure 1).…”

Section: Discussionmentioning

confidence: 99%

Biochar co‐compost improves nitrogen retention and reduces carbon emissions in a winter wheat cropping system

et al. 2023

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Organic amendments, such as compost and biochar, mitigate the environmental burdens associated with wasting organic resources and close nutrient loops by capturing, transforming, and resupplying nutrients to soils. While compost or biochar application to soil can enhance an agroecosystem's capacity to store carbon and produce food, there have been few field studies investigating the agroecological impacts of amending soil with biochar co-compost, produced through the composting of nitrogen-rich organic material, such as manure, with carbon-rich biochar. Here, we examine the impact of biochar co-compost on soil properties and processes by conducting a field study in which we compare the environmental and agronomic impacts associated with the amendment of either dairy manure co-composted with biochar, dairy manure compost, or biochar to soils in a winter wheat cropping system. Organic amendments were applied at equivalent C rates (8 Mg C ha −1 ). We found that all three treatments significantly increased soil water holding capacity and total plant biomass relative to the noamendment control. Soils amended with biochar or biochar co-compost resulted in significantly less greenhouse gas emissions than the compost or control soils. Biochar co-compost also resulted in a significant reduction in nutrient leaching relative to the application of biochar alone or compost alone. Our results suggest that biochar co-composting could optimize organic resource recycling for climate change mitigation and agricultural productivity while minimizing nutrient losses from agroecosystems.

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Section: Discussionmentioning

confidence: 99%

Biochar co‐compost improves nitrogen retention and reduces carbon emissions in a winter wheat cropping system

et al. 2023

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“…Since traditional soil nitrogen studies have relied on aqueous extractions, there is an ongoing debate about how microdialysis relates to these measurements. It is generally accepted that conventional extraction methods can modify nitrogen pools in a soil sample by destroying soil structures such as fine roots and hyphae [84], mineralizing organic nitrogen and increasing the proportion of inorganic nitrogen, especially NH 4 + [85]. In contrast, microdialysis techniques have relatively little disturbance to the soil and thus minimize these inaccuracies in the nitrogen samples taken.…”

Section: Future Perspectivesmentioning

confidence: 99%

The Participation of Microbiota in the Transformation of Nitrogen Compounds in the Soil—A Review

2021

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Due to the growing costs of agricultural production and the need to protect the environment, there has been a need to intensify activities leading to an increase in the effectiveness of natural biological processes. These measures should increase the biodiversity of the environment, enable the adaptation of microorganisms and the protection of plants and soils against the background of the concept of sustainable agricultural development. The soil is an important environment in which many elements are transformed, including nitrogen necessary for the proper yielding of plants. The aim of the article is to present the microbiological aspect of nitrogen transformation, starting with a review of historical findings and then to discuss the progress of the latest developments that have contributed to a detailed understanding of the biochemical reactions occurring during nitrogen transformation in soil. Moreover, the aim of the study is to present the current state of knowledge on the dynamics of nitrogen uptake and conversion by various species of microorganisms and the relationship between the activity of nitrogen microorganisms and nitrogen uptake by plants. The article also includes the latest information on the possibility of using microbiological biostimulants supporting plant growth (PGPR) and protection against the effects of phytopathogens.

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Rangeland application of biochar and rotational grazing interact to influence soil and plant nutrient dynamics

Gao

DeLuca

2022

Geoderma

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Influence of fire retardant and pyrogenic carbon on microscale changes in soil nitrogen and phosphorus

Cited by 4 publications

References 36 publications

Biochar co‐compost improves nitrogen retention and reduces carbon emissions in a winter wheat cropping system

Biochar co‐compost improves nitrogen retention and reduces carbon emissions in a winter wheat cropping system

The Participation of Microbiota in the Transformation of Nitrogen Compounds in the Soil—A Review

Rangeland application of biochar and rotational grazing interact to influence soil and plant nutrient dynamics

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