Improving phosphorus availability to rice through silicon management in paddy soils: A review of the role of silicate-solubilizing bacteria

Rice needs a lot of phosphorus (P) to grow, but much of the P fertilizers applied to paddy soils becomes unavailable to the plants. Silicon (Si) amendments can increase P availability to rice. Si is widely available in soils as insoluble silicates, but only the soluble form, monosilicic acid, can be...

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Bibliographic Details
Published inRhizosphere Vol. 27; p. 100749
Main Authors Etesami, Hassan, Schaller, Jörg
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2023
Subjects
Biofertilizer
fertilizer application
Microbial weathering
nonpoint source pollution
paddies
Paddy soils
Phosphorus
phosphorus fertilizers
rhizosphere
rice
Silicate-solubilizing bacteria
silicon
water solubility
Biofertilizer
Silicate-solubilizing bacteria
Phosphorus
Microbial weathering
Paddy soils
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Summary:Rice needs a lot of phosphorus (P) to grow, but much of the P fertilizers applied to paddy soils becomes unavailable to the plants. Silicon (Si) amendments can increase P availability to rice. Si is widely available in soils as insoluble silicates, but only the soluble form, monosilicic acid, can be absorbed by plants. Water-soluble Si fertilizers are effective but expensive. Using silicate-solubilizing bacteria (SSB) can help solubilize Si and improve P availability by a cheaper way. This paper reviews Si's role in improving P availability to rice, focusing on SSB's capacity to increase Si availability in soils. This knowledge can help reduce chemical P fertilizer use, P accumulation in paddy soils, and environmental risks from non-point source pollution.
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ISSN:2452-2198
2452-2198
DOI:10.1016/j.rhisph.2023.100749