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| Garland, Gina; Bünemann, E. K.; Oberson, A.; Frossard, E.; Snapp, S.; Chikowo, R.; Six, J.. |
| Effective use of soil phosphorus (P) for crop production requires an understanding of how P pools are stabilized and cycled within soil aggregates, rather than assuming that P dynamics, particularly organic P, closely follow those of C. The main goal of this study was to compare C and N cycling with P dynamics in soil aggregate fractions under two distinct crop species, maize (Zea mays) and pigeon pea (Cajanus cajan) in a highly-weathered Lixisol. We found that while C and N follow an open cycle, whereby C and N are mineralized from microaggregates during macroaggregate turnover and partially exit the soil system as gas and leachate, P has a relatively closed cycle, where most of the mineralized and solubilized P from microaggregates is lost from the... |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2018 |
URL: http://orgprints.org/34709/1/garland-etal-2018-SoilBiolBiochem-Vol116-p91-98.pdf |
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| Jarosch, K. A.; Kandeler, E.; Frossard, E.; Bünemann, E. K.. |
| The mineralization of soil organic phosphorus (P) is catalysed by extracellular phosphatases that hydrolyse different non-phytate phosphomonoesters (e.g., sugar phosphates and nucleotides), inositol phosphates (e.g., phytic acids), and phosphodiesters (e.g., nucleic acids, phospholipids). The availabilities of both the organic P compound and the respective phosphatase enzyme jointly determine whether the hydrolysis reaction is substrate limited (enzyme availability > substrate availability) or enzyme limited (enzyme availability < substrate availability), with potential consequences for overall organic P composition and accumulation in soil. Our objective was to evaluate whether the hydrolysis of various organic P compounds in soil is limited by... |
| Tipo: Journal paper |
Palavras-chave: Soil quality. |
| Ano: 2019 |
URL: http://orgprints.org/36700/1/jarosch-etal-2019-SoilBiolBiochem-Vol139-107628-p1-11.pdf |
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| Garland, Gina; Bünemann, E. K.; Oberson, A.; Frossard, E.; Six, J.. |
| Background and aims In Malawi, strategies are being sought to boost maize production through improvements in soil fertility. This study assessed the impact of intercropping maize (Zea mays) with pigeon pea (Cajanus cajan) in Lixisols of Malawi on yield, biological N fixation, soil aggregation, and P forms within soil aggregates. Methods Maize and pigeon pea were grown intercropped in pots, with varying degrees of root interaction in order to understand the relative importance of biochemical versus physical rhizospheric interactions. Following harvest, soils were separated into aggregate fractions using wet-sieving, and the nutrient content of all fractions was assessed. Results The proportion of macroaggregates and microaggregates increased by 52 and... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Root crops. |
| Ano: 2017 |
URL: http://orgprints.org/32324/1/garland-etal-2017-PlantSoil-Vol-415-Issue1-2-p37-55.pdf |
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| Tamm, L.; Pertot, I.; Schmitt, A.; Verrastro, V.; Magid, J.; Bünemann, E. K.; Möller, K.; Athanasiadou, S.; Experton, C.; Leiber, F.; Steinshamm, H.; Moeskops, B.; Herforth-Rahmé, J.; Maurer, V.. |
| Organic farmers adhere to high standards in producing quality food while protecting the environment. However, organic farming needs to improve continuously to keep meeting its ambitious objectives. The project ‘Replacement of Contentious Inputs in Organic Farming Systems’ (RELACS) will foster the development and adoption of cost-efficient and environmentally safe tools and technologies to further reduce the use of external inputs on organic farms across Europe as well as in Non EU Mediterranean countries. Project partners will provide scientific support to develop fair and implementable EU rules to improve current practices in organic farming. Farm advisory networks in 11 European countries will reach out to farmers to ensure effective dissemination and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare Crop health; Quality; Protection. |
| Ano: 2018 |
URL: http://orgprints.org/34690/1/tamm-etal-2018-ICOAS2018_BoA._p47pdf.pdf |
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