Significance and Role of Si in Crop Production

Haynes, Richard

doi:10.1016/bs.agron.2017.06.001

Cited by 81 publications

(51 citation statements)

References 374 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In fact, silica structures synthesized by, for example protists, sponges, and plants, form protistic, zoogenic, and PhSi pools in soils, respectively (Puppe et al, ). These pools represent various sources of DSi in agricultural soils (Haynes, ), because biogenic silica has a much higher dissolution rate than silicate minerals (Fraysse, Pokrovsky, Schott, & Meunier, , ). The phytogenic pool is, however, the most important source of bioavailable Si in soil.…”

Section: Enhancing the Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

“…In fact, silica structures synthesized by, for example protists, sponges, and plants, form protistic, zoogenic, and PhSi pools in soils, respectively (Puppe et al, 2015). These pools represent various sources of DSi in agricultural soils (Haynes, 2017), because biogenic silica has a much higher dissolution rate than silicate minerals (Fraysse, Pokrovsky, Schott, & Meunier, 2006 1963), which return to soil within plant debris (Smithson, 1956). Soil phytoliths readily dissolve at common pH values of soil solution (Fraysse et al, 2006(Fraysse et al, , 2009, and thus contribute to feed the reservoir of plant-available Si (Alexandre, Meunier, Colin, & Koud, 1997;Bartoli, 1983;Farmer, Delbos, & Miller, 2005;Keller, Guntzer, Barboni, Labreuche, & Meunier, 2012;Li, Song, & Cornelis, 2014;Marxen et al, 2016;Meunier, Guntzer, Kirman, & Keller, 2008;Riotte et al, 2018;Unzué-Belmonte et al, 2016;Yang & Zhang, 2018).…”

Section: Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

“…Si fertilization indeed increases crop yields (Berthelsen, Noble, & Garside, 2001;Keller et al, 2012;Liang, Ma, Li, & Feng, 1994;Liang et al, 2015;Meyer & Keeping, 2001;Savant, Snyder, & Datnoff, 1996;Song, Wang, Strong, & Shan, 2014). It is increasingly practiced to improve crop productivity (Datnoff & Heckman, 2014;Datnoff, Snyder, & Korndörfer, 2001;Haynes, 2017;Keeping, 2017;Ma & Takahashi, 2002;Tubana, Babu, & Datnoff, 2016). To date, Si fertilizers consist mainly of silicate slag and natural silicate minerals (Berthelsen et al, 2001;Datnoff & Heckman, 2014;Gascho, 2001;Haynes, 2014;Haynes & Zhou, 2018;Keeping, 2017;Liang et al, 1994;Ma & Takahashi, 2002), as well as nano-Si foliar fertilizers (Puppe & Sommer, 2018).…”

Section: Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

“…To date, Si fertilizers consist mainly of silicate slag and natural silicate minerals (Berthelsen et al, 2001;Datnoff & Heckman, 2014;Gascho, 2001;Haynes, 2014;Haynes & Zhou, 2018;Keeping, 2017;Liang et al, 1994;Ma & Takahashi, 2002), as well as nano-Si foliar fertilizers (Puppe & Sommer, 2018). Although cost-effective because they derive from by-products of furnaces, silicate slags often contain only a small proportion of soluble Si (Haynes, 2014(Haynes, , 2017Liang et al, 2015;Savant et al, 1996), and may present hazardous levels of heavy metals (Belanger, 1995;Haynes, Belyaeva, & Kingston, 2013;Savant et al, 1996). In contrast, silicate minerals such as wollastonite (CaSiO 3 ) are expensive and have limited mineral reserves (Haynes, 2014;Haynes et al, 2013;Savant et al, 1996).…”

Section: Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

See 3 more Smart Citations

Phytolith‐rich biochar: A potential Si fertilizer in desilicated soils

Delvaux

2019

GCB Bioenergy

View full text Add to dashboard Cite

Silicon (Si) is beneficial to plants since it increases photosynthetic efficiency, and alleviates biotic and abiotic stresses. In the most highly weathered and desilicated soils, plant phytoliths make up the reservoir of bioavailable Si. The regular removal of crop residues, however, substantially decreases this pool. Si supply may therefore be required to sustain continuous cropping. Available Si fertilizers are costly and usually poor in soluble Si. Biochar produced from the pyrolysis of phytolith‐rich biomass is thus a promising alternative Si source for plants. Taking into account the challenges of increasing food demand and environmental concerns, we evaluate the global potential of biochar produced from major crop residues and manures in terms of phytogenic Si (PhSi) supply. Crop residues contribute to 80% of the global production of biomass dry matter (8,201 Tg/year) of which 3,137 Tg/year are potentially available after pyrolysis, giving a potential application rate of 1.7 T ha−1 year−1 for highly weathered soils in the tropics. The potential PhSi supply from crop biochar amounts to 102 Tg Si/year. On its own, rice straws produce 57.7 Tg PhSi/year, accounting for 56.6% of the potential annual PhSi production. The Si release from crop biochar depends on inter altere feedstock type, pyrolysis temperature, soil pH, and buffer capacity. Furthermore, the amplitude of plant Si uptake and mineralomass depends on plant species, soil properties, and processes. These factors interact and can exert a decisive influence on the effectiveness of phytolithic biochar in releasing Si into highly weathered soils. We conclude that the use of phytolithic biochar as a Si fertilizer offers undeniable potential to mitigate desilication and to enhance Si ecological services due to soil weathering and biomass removal. This potential must be explored, as well as the conditions for using biochar in the field.

show abstract

Section: Enhancing the Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

Section: Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

Section: Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

Section: Biological Si Feedback Loop In Agroecosystemsmentioning

confidence: 99%

See 2 more Smart Citations

Phytolith‐rich biochar: A potential Si fertilizer in desilicated soils

Delvaux

2019

GCB Bioenergy

View full text Add to dashboard Cite

show abstract

“…However, Si can be especially useful when plants are under environmental stresses, and the benefits of Si fertilization may be minimal unless the plant is under some form of stress (Epstein, ; Fauteux, Rémus‐Borel, Menzies, & Bélanger, ). Beneficial effects of Si fertilization on drought‐stressed plants primarily result from Si mediation of many alterations in plant biochemistry and physiology (Haynes, ; Rizwan et al, ; Sacala, ; Zhu & Gong, ), although the underlying mechanisms that account for the manifold effects of Si in plant biology remain undefined (Frew, Weston, Reynolds, & Gurr, ; Hall, Waterman, Vandegeer, Hartley, & Johnson, ). Because Si ultimately increases photosynthesis, plant growth, biomass, and crop yield and quality during drought conditions (Rizwan et al, ), the effects of drought stress (Blum, ) are mitigated by Si at the whole plant level and crop production.…”

Section: Introductionmentioning

confidence: 99%

Combined effects of soil silicon and drought stress on host plant chemical and ultrastructural quality for leaf‐chewing and sap‐sucking insects

Teixeira

Valim

Oliveira

et al. 2019

J Agronomy Crop Science

View full text Add to dashboard Cite

It was postulated that Si‐mediated plant resistance to herbivory changes with soil water status, increasing when plants are under drought stress. We subjected collard (Brassica oleracea) to such soil variables and assessed plant responses and effects on the leaf‐chewing larvae of Plutella xylostella and the sap‐sucking aphid Brevicoryne brassicae. Silicon accumulated in collard leaves independently of soil water conditions, but it influenced mainly drought‐stressed plants. Silicon suppressed harmful effects of drought on leaf and root length and raised leaf water content and stomatal size to the same conditions of well‐watered plants. Drought stress reduced hemicellulose and cellulose, but Si did not influence them or lignin. Combination of drought and Si increased total and soluble leaf nitrogen. Drought decreased total glucosinolates, but Si increased such defence metabolites to similar concentrations that were found in well‐watered plants. Nutritional changes mediated by drought and Si in fibre, leaf water content, soluble nitrogen and glucosinolates did not increase insect performance in any feeding guild. Instead, caterpillars performed worse in drought‐stressed or Si‐treated collards, mainly in plants under combined conditions. Silicon improved plant resistance to drought and herbivore stresses.

show abstract

Short‐term exposure to silicon rapidly enhances plant resistance to herbivory

Waterman

Cibils–Stewart

Cazzonelli

et al. 2021

Ecology

View full text Add to dashboard Cite

Silicon (Si) can adversely affect insect herbivores, particularly in plants that evolved the ability to accumulate large quantities of Si. Very rapid herbivore-induced accumulation of Si has recently been demonstrated, but the level of protection against herbivory this affords plants remains unknown. Brachypodium distachyon, a model Si hyperaccumulating grass, was exposed to the chewing herbivore, Helicoverpa armigera, and grown under three conditions: supplied Si over 34 days (+Si), not supplied Si (-Si), or supplied Si once herbivory began (-Si+Si). We evaluated the effectiveness of each Si treatment at reducing herbivore performance and measured Si-based defenses and phenolics (another form of defense often reduced by Si). Although Si concentrations remained lower, within 72 hr of exposure to Si, -Si+Si plants were as resistant to herbivory as +Si plants. Both +Si and -Si+Si treatments reduced herbivore damage and growth, and increased mandible wear compared to -Si. After 6 hr, herbivory increased filled Si cell density in -Si+Si plants, and within 24 hr, -Si+Si plants reached similar filled Si cell densities to +Si plants, although decreased phenolics only occurred in +Si plants. We demonstrate that plants with short-term Si exposure can rapidly accumulate Si-based anti-herbivore defenses as effectively as plants with long-term exposure.

show abstract

Significance and Role of Si in Crop Production

Cited by 81 publications

References 374 publications

Phytolith‐rich biochar: A potential Si fertilizer in desilicated soils

Phytolith‐rich biochar: A potential Si fertilizer in desilicated soils

Combined effects of soil silicon and drought stress on host plant chemical and ultrastructural quality for leaf‐chewing and sap‐sucking insects

Short‐term exposure to silicon rapidly enhances plant resistance to herbivory

Contact Info

Product

Resources

About