Iron(III) Reduction in Anaerobically Incubated Suspensions of Highly Calcareous Agricultural Soils

Sánchez-Alcalá, I.; Campillo, M. C. del; Torrent, J.; Straub, Kristina; Kraemer, Stephan M.

doi:10.2136/sssaj2011.0050

Cited by 22 publications

(8 citation statements)

References 27 publications

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“…The 24 soil samples used in Experiment 1 were collected in 2008 from the topsoil (0–30 cm) of calcareous soils in vineyards and olive orchards in various areas of southern Spain and were characterised in detail by Sánchez‐Alcalá et al For Experiment 2, samples were collected from the topsoil of an olive orchard located near Seville (Soil 1) and a vineyard in La Mancha region (Soil 2). In all cases the plants growing on these soils had shown or showed Fe chlorosis symptoms of variable severity.…”

Section: Methodsmentioning

confidence: 99%

The severity of iron chlorosis in sensitive plants is related to soil phosphorus levels

Sánchez‐Rodríguez

Campillo

Torrent

2014

J. Sci. Food Agric.

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Section: Methodsmentioning

confidence: 99%

The severity of iron chlorosis in sensitive plants is related to soil phosphorus levels

Sánchez‐Rodríguez

Campillo

Torrent

2014

J. Sci. Food Agric.

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“…Soil microorganisms can facilitate the mobilization of soil P through various mechanisms (Wang et al 2012). Many rhizobacteria and fungi possess mechanisms to mobilize Fe, and hence Fe-bound P, including chelator release, acidification (Marschner et al 2004, Lemanceau et al 2009 and reduction processes (Sánchez-Alcalá et al 2011). Acidification by plant growth-promoting bacteria facilitates uptake of P from poorly soluble -and hence largely unavailable-Ca phosphates by plants (Browne et al 2009, Singh andReddy 2011).…”

Section: Introductionmentioning

confidence: 99%

Plant uptake of phosphorus from sparingly available P- sources as affected by Trichoderma asperellum T34

García‐López

Avilés

Delgado

2015

AFSci

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The contribution of Trichoderma asperellum T34 to the plant uptake of phosphorus (P) from sparingly phytoavailable forms such as insoluble calcium (Ca) phosphates and phytates was studied. Two experiments with cucumber (Cucumis sativus L.) on siliceous sand were performed involving two factors, namely: (i) P source, viz., KH2PO4, phytate (Ins6P), and phosphate rock (PR), and (ii) inoculation with T34. Liquid pure cultures of T34 were also used. T34 increased the total content in P of cucumber roots irrespective of the particular P form and enhanced total P uptake by plants with P supplied as Ins6P or PR. The increased phytase activity observed with T34 contributes to explain its favourable influence on the uptake of P supplied as Ins6P. Solubilization of Ca phosphates from PR was favoured by the slightly acidifying effect and the increased organic anion concentration promoted by the fungus in the plant growth media. It can be concluded that T34 can improve P nutrition in plants grown on media containing phytates or insoluble Ca phosphates as dominant P forms.

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“…The soils were selected on the basis of previous experiments ( Sánchez‐Alcalá et al, 2011; Sánchez‐Rodríguez et al, 2013), in which they had exhibited capacity to induce Fe‐ or P‐deficiency. For the Fe deficiency experiment, the soil was collected from the surface horizon of a Cambisol under a vineyard (> 20‐y old; rainfed, minimum tillage and no fertilization) in Huelva, Spain (37°21'48″ N, 6°31'29″ W).…”

Section: Methodsmentioning

confidence: 99%

Plant growth responses to biochar amendment of Mediterranean soils deficient in iron and phosphorus

Alburquerque

Cabello

Avelino

et al. 2015

J. Plant Nutr. Soil Sci.

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This study evaluated the effect of biochar on plant growth under Fe-and P-deficient soil conditions. Lupin and sorghum (sensitive to soil Fe and P deficiency, respectively) were pot-grown on one (Fe) or two (P) soils to which either two biochars of contrasting properties (produced from olive-tree pruning and pine wood) or Fe/P fertilizers or biochars combined with Fe/P fertilizers were added. Without Fe addition, the olive-tree pruning biochar increased lupin growth with results comparable to those of the sole application of the Fe fertilization, while biochars combined with the Fe fertilization did not significantly affect plant growth variables relative to the Fe treatment alone. Biochar did not correct P deficiency in the tested soils. However, the application of the pine wood biochar together with a P fertilizer to a calcareous soil increased sorghum biomass yield by 42% relative to the sole application of the P fertilizer. Biochar addition did not significantly affect root traits, suggesting its scarce influence on nutrient mobilization and uptake efficiency. Although biochar alone did not alleviate nutrient deficiency in the studied soils due to the low Fe and P contents added in available form with the tested materials, the present results suggest that biochar can provide additional benefits combined with the use of fertilizers under nutrientdeficient conditions; and open new options to formulate biochar-based amendments that can play a relevant role in the context of sustainable agriculture.

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Iron(III) Reduction in Anaerobically Incubated Suspensions of Highly Calcareous Agricultural Soils

Cited by 22 publications

References 27 publications

The severity of iron chlorosis in sensitive plants is related to soil phosphorus levels

The severity of iron chlorosis in sensitive plants is related to soil phosphorus levels

Plant uptake of phosphorus from sparingly available P- sources as affected by Trichoderma asperellum T34

Plant growth responses to biochar amendment of Mediterranean soils deficient in iron and phosphorus

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