Organic management increases soil nitrogen but not carbon content in a tropical citrus orchard with pronounced N2O emissions

B.Escanhoela, Andrea Sibila; Pitombo, Leonardo Machado; Brandani, Carolina Braga; Navarrete, Acácio Aparecido; Bento, Camila Bolfarini; Carmo, Janaína Braga do

doi:10.1016/j.jenvman.2018.11.109

Cited by 24 publications

(10 citation statements)

References 43 publications

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“…Lin et al (2019) found that the long-term application of organic fertilizers promoted the formation of soil organic matter and aggregates and changed the bacterial community structure and key groups of bacteria species. Escanhoela et al (2019) found that organic agricultural management can increase nitrogen in the soil. Long-term planting of green manure plants between rows in organic orchards can increase soil organic matter and maintain fruit tree performance, improve soil organic matter, improve soil gen and total phosphorus in the fourth year compared with those in conventionally managed soils (Neilsen et al, 2014).…”

Section: Response Of Soil Physical and Chemical Properties To Differe...mentioning

confidence: 99%

Effects of different cultivation strategies on soil nutrients and bacterial diversity in kiwifruit orchards

Li¹,

Chongyi²,

Xumei³

et al. 2022

Europ.J.Hortic.Sci.

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The basic principle underlying organic orchards is increased soil nutrient content, particularly organic matter content and increases soil bacterial activity and diversity. A standard organic management stratep < 0.05) soil alkaline phosphatase, urease, and sucrase activities and soil organic matter, total nitrogen, total phosphorus, and nitrate nitrogen contents. The soils of two orchards mainly ed by Proteobacteria, Acidobacteria, Actinobacteria, , and Gemmatimonadetes. Correlational analysis showed that the bacterial community was ganic matter. Catalase, urease, sucrase, and alkaline phosphatase activities and soil organic matter, total nitrogen, and nitrate-nitrogen contents promoted soil bacterial content. A comprehensive analysis showed that organic orchard management improved soil nutrients and enzyme activities and changed the soil bacterial diversity compared with those of conventionally managed soil.

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Section: Response Of Soil Physical and Chemical Properties To Differe...mentioning

confidence: 99%

Effects of different cultivation strategies on soil nutrients and bacterial diversity in kiwifruit orchards

Li¹,

Chongyi²,

Xumei³

et al. 2022

Europ.J.Hortic.Sci.

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“…The main objectives of the first studies were centred in the fertilizing potential of the manure-based fertilizers, relatively to mineral fertilizers or to other biowaste-derived fertilizers (e.g., biosolids, municipal solid waste compost), evaluating the effects on soil nutritional status and on fruit/plant quality and yield [118][119][120][121][122], while recent studies are more concerned about environmental issues, mainly those which have an impact in climate change and its mitigation, like C sequestration [117], gaseous emissions, namely N 2 O and CH 4 [123][124][125][126], as well as nutrient cycling [126]. Some of these studies have, in fact, pointed to some scenarios where the GHG balance was more negative for organic than for conventional farming [124]. However, it is important to highlight that the use of organic-based fertilizers (namely those based on manures), represent an optimized N fertilizing strategy in a circular economy perspective, contributing to the nutrients loop and to the decrease in the environmental impacts from the overburden use of mineral fertilizers in horticultural systems [126], and from the excessive production of slurries and manures in areas with a high density of livestock systems.…”

Section: Alternative Uses For Manures or Manure-based Productsmentioning

confidence: 99%

Horticulture and Orchards as New Markets for Manure Valorisation with Less Environmental Impacts

2021

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Animal manure management is a real challenge to minimize environmental impacts and ensure that this valuable material is efficiently used in a circular economy context. One of the main limitations for larger use of animal manure as fertilizer is the availability of land to receive it in an area close to the farm. Indeed, animal manure is traditionally used for cereals and animal feed growth, but the soil area occupied with these crops might not be enough to receive all the manure produced and/or part of this soil might have nutrient contents, namely phosphorous, that do not permit further application of manure. Hence, extra land used for other agricultural activities might be an option. The main objective of the present review was to analyse the constraints and solutions to increase the use of manure in horticulture and orchards. Emphasis was given to the legal framework for manure utilization in the EU that might stimulate or restrain such a solution. The main characteristics of manure that might limit or stimulate manure reuse were also described, and the potential of some treatments to valorise manure was analysed. Several examples of alternative uses of manure in horticulture and orchards were examined, and the society and farmers’ acceptance of the proposed solution was addressed.

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“…[99], and carrot (Daucus carota L.) [100]; fruits such as papaya (Carica papaya L.) [101], citrus (Citrus spp.) [102], and raspberry (Rubus idaeus L.) [103]; and annual crops such as maize (Zea mays L.) [104] and cowpea (Vigna unguiculata (L.) Walp) [105]. Most organic fertilizers used as N source are derived from (a) agricultural wastes (cattle, swine and poultry manure), slaughterhouses (bone and blood meal), composting, and vermicomposting; (b) agro-industrial wastes (oilseed pies, sugarcane bagasse, and vinasse) and biochar; and (c) household wastes and sewage sludge composting ( Table 2).…”

Section: Nitrogen and Organic Fertilizationmentioning

confidence: 99%

Organic Nitrogen in Agricultural Systems

Silva¹,

Melo²,

Sombra³

et al. 2020

Nitrogen Fixation

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This work summarizes information about organic nitrogen (N) in the agricultural system. The organic N forms in soils have been studied by identifying and quantifying the released organic compounds when soils are acid treated at high temperature, in which the following organic N fractions are obtained: hydrolyzable total N, subdivided into hydrolyzable NH 4 + -N, amino sugars-N, amino acids-N, and unidentified-N and acid insoluble N, a fraction that remains associated with soil minerals after acid hydrolysis. Nitrogen mineralization and immobilization are biochemical processes in nature. This chapter summarizes how these processes occur in the agricultural system. Then, soluble organic nitrogen (SON), volatilization and denitrification processes, and biological nitrogen fixation (BNF) as a key component of the nitrogen cycle and how it makes N available to plants are also discussed. Finally, we discuss the use of organic fertilizers as N source to satisfy the worldwide demand for organic foods produced without synthetic inputs.

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Organic management increases soil nitrogen but not carbon content in a tropical citrus orchard with pronounced N2O emissions

Cited by 24 publications

References 43 publications

Effects of different cultivation strategies on soil nutrients and bacterial diversity in kiwifruit orchards

Effects of different cultivation strategies on soil nutrients and bacterial diversity in kiwifruit orchards

Horticulture and Orchards as New Markets for Manure Valorisation with Less Environmental Impacts

Organic Nitrogen in Agricultural Systems

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