Nutrients and non-essential elements in edible crops following long-term mineral and compost fertilization of a Mediterranean agricultural soil

Baldantoni, Daniela; Saviello, Giovanni; Alfani, Anna

doi:10.1007/s11356-018-3353-8

Cited by 14 publications

(11 citation statements)

References 29 publications

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“…Thousands of scientific publications, in the last three decades, deal with compost, illustrating the beneficial effects on soils depleted of its organic matter due to the reckless use of inorganic fertilizers [32]. The benefits of compost on soil chemical-physical-biological properties, and on crop productivity have been widely demonstrated [33][34][35]. In our pot experiment the positive effect on the seedlings growth and biomass was confirmed once more, in almost all the treated crops and groups.…”

Section: Discussionsupporting

confidence: 58%

Effects of Compost Amendment on Glycophyte and Halophyte Crops Grown on Saline Soils: Isolation and Characterization of Rhizobacteria with Plant Growth Promoting Features and High Salt Resistance

et al. 2021

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Soil salinization and desertification due to climate change are the most relevant challenges for the agriculture of the 21st century. Soil compost amendment and plant growth promoting rhizobacteria (PGP-R) are valuable tools to mitigate salinization and desertification impacts on agricultural soils. Selection of novel halo/thermo-tolerant bacteria from the rhizosphere of glicophytes and halophytes, grown on soil compost amended and watered with 150/300 mM NaCl, was the main objective of our study. Beneficial effects on the biomass, well-being and resilience, exerted on the assayed crops (maize, tomato, sunflower and quinoa), were clearly observable when soils were amended with 20% compost despite the very high soil electric conductivity (EC). Soil compost amendment not only was able to increase crop growth and biomass, but also their resilience to the stress caused by very high soil EC (up to 20 dS m−1). Moreover, compost amendment has proved itself a valuable source of highly halo- (4.0 M NaCl)/thermo tolerant rhizobacteria (55 °C), showing typical PGP features. Among the 13 rhizobacterial isolates, molecularly and biochemically characterized, two bacterial strains showed several biochemical PGP features. The use of compost is growing all around the world reducing considerably for farmers soil fertilization costs. In fact, only in Italy its utilization has ensured, in the last years, a saving of 650 million euro for the farmers, without taking into account the environment and human health benefits. Furthermore, the isolation of halo/thermo-tolerant PGPR strains and their use will allow the recovery and cultivation of hundreds of thousands of hectares of saline and arid soils now unproductive, making agriculture more respectful of agro-ecosystems also in view of upcoming climate change.

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Section: Discussionsupporting

confidence: 58%

Effects of Compost Amendment on Glycophyte and Halophyte Crops Grown on Saline Soils: Isolation and Characterization of Rhizobacteria with Plant Growth Promoting Features and High Salt Resistance

et al. 2021

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“…Compost addition is the most employed land management practice for the accumulation of organic carbon in soils [7,8], while providing plants with essential nutrients [9][10][11]. Long-term soil amendments with biowaste compost, alone or in combination with mineral fertilizers (MFs), may represent a cost-effective, eco-friendly, and safe strategy [12,13]. Indeed this practice not only can have positive effects on crop yield [8] and edaphic community [14,15], but also can ensure crop quality [12,16], even when increases in soil potentially toxic element (PTE) bioavailability occur [17].…”

Section: Introductionmentioning

confidence: 99%

“…Long-term soil amendments with biowaste compost, alone or in combination with mineral fertilizers (MFs), may represent a cost-effective, eco-friendly, and safe strategy [12,13]. Indeed this practice not only can have positive effects on crop yield [8] and edaphic community [14,15], but also can ensure crop quality [12,16], even when increases in soil potentially toxic element (PTE) bioavailability occur [17]. The physicochemical and biological properties of agroecosystem soils may be improved not only by BC, but also by SS application.…”

Section: Introductionmentioning

confidence: 99%

Compost and Sewage Sludge for the Improvement of Soil Chemical and Biological Quality of Mediterranean Agroecosystems

Picariello

Pucci²,

Carotenuto

et al. 2020

Sustainability

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Conventional fertilization practices in agroecosystems concern the supply of bioavailable nutrients, such as mineral fertilizers. A consolidated alternative to restoring the long-term fertility of agricultural soils is their amendment with organic fertilizers. Soil amendment with biowaste compost or sewage sludge represents a sustainable strategy to avoid the landfilling of organic matter derived from urban waste and sewage sludge. This study aims at validating the use of quality biowaste compost and sewage sludge from secondary sedimentation (alone or in combination with mineral fertilizers) in a Mediterranean agroecosystem and their effects on soil chemical and biological quality, with a view to verifying the maintenance of soil fertility and functionality. In particular, the dynamics of soil organic matter, pH, potentially toxic elements and microbial community functionality were assessed, in experimental mesocosms, during 6 months of incubation. The research showed that, while soil amendment with biowaste compost induces positive effects on soil organic matter and phosphorous concentrations, as well as on microbial community functionality, the amendment with the selected sewage sludge does not determine any benefit to the microbial community or any danger in relation to soil potentially toxic element concentrations and toxicity. The quantity of sewage sludge employed, chosen according to regional directives, was thus not enough to stimulate the edaphic microflora activity.

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“…In particular, the adoption of organic amendments and the widening of cultivar selections are two of the most common practices promoted in the past few decades [7]. Amendment with biowaste compost has been fostered in the Mediterranean area not only to improve physical, chemical and biological soil properties but also for its undeniable benefits linked to the recycling of organic wastes and the mitigation of climate changes [8][9][10][11][12][13]. Even if recycling back byproducts from food production, processing and consumption into the food system represent key points of circular and sustainable agriculture [4], concerns regarding the potential introduction of persistent contaminants or the enhancement of their availability to the biota still exist [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Choice of Cultivar and Soil Fertilization on PTE Concentrations in Lactuca sativa L. in the Framework of the Regenerative Agriculture Revolution

Baldantoni¹,

Bellino²,

Cicatelli³

et al. 2021

Land

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Evaluating the relative weight of the choice of cultivar and soil fertilization on potentially toxic elements (PTEs) accumulation is crucial in promoting informed decisions in the framework of regenerative agriculture. To this end, 11 PTEs (Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Zn) were determined in both leaves and roots of six cultivars (Stylist, Xanadu, Aljeva, Bacio, Analena, Vincenzo) of lettuce (Lactuca sativa L.) grown side by side on mineral fertilized or biowaste compost amended soils, under greenhouse conditions. The use of multivariate and linear modelling approaches indicated that the organ and cultivar primarily account for the variability in PTE concentrations. In terms of PTE partitioning between organs, Cd and Mg were preferentially accumulated in leaves, whereas Cu, Pb, K and Zn in roots. As for the cultivar, Xanadu showed the highest concentrations of several PTEs, with Cd reaching concerning levels. Fertilization had a detectable contribution only on Cd accumulation, slightly increased in leaves by compost. Findings highlight the key role of cultivar choice in guaranteeing food safety and grant the possibility to adopt biowaste compost in regenerative agriculture without concerns about PTE accumulation enhancements in lettuce, but demand a cautionary approach in the case of Cd.

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Nutrients and non-essential elements in edible crops following long-term mineral and compost fertilization of a Mediterranean agricultural soil

Cited by 14 publications

References 29 publications

Effects of Compost Amendment on Glycophyte and Halophyte Crops Grown on Saline Soils: Isolation and Characterization of Rhizobacteria with Plant Growth Promoting Features and High Salt Resistance

Effects of Compost Amendment on Glycophyte and Halophyte Crops Grown on Saline Soils: Isolation and Characterization of Rhizobacteria with Plant Growth Promoting Features and High Salt Resistance

Compost and Sewage Sludge for the Improvement of Soil Chemical and Biological Quality of Mediterranean Agroecosystems

Influence of the Choice of Cultivar and Soil Fertilization on PTE Concentrations in Lactuca sativa L. in the Framework of the Regenerative Agriculture Revolution

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