Effect of Silicon on Low pH Soil Phosphorus Sorption and on Uptake and Growth of Maize

Owino-Gerroh, C.; Gascho, G. J.

doi:10.1081/lcss-200030686

Cited by 67 publications

(14 citation statements)

References 13 publications

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“…Lower pH and higher clay contents in Baljigapade indicate higher P requirement than Pavagada, which could be a reason for lesser increase in P 2 O 5 availability in former location than latter. Matichenkov (1990) reported that increase in the concentration of monosilicic acid results in the transformation of slightly soluble P into plant-available P. Owino-Gerroh and Gascho (2004) observed that the application of soluble Si in acid soil could increase the amount of available P 2 O 5 through decreasing adsorption of P. Water-soluble Si released from SBG plays a crucial role in decreasing P adsorption capacity of soil which is in accordance with Subramanian and Gopalswamy (1990). Kostic et al (2017) reported that the supply of Si in the form of Na 2 SiO 3 increased the root exudation of organic acids that mobilize P in the rhizosphere soil.…”

Section: Discussionsupporting

confidence: 59%

Slag-Based Gypsum as a Source of Sulphur, Calcium and Silicon and Its Effect on Soil Fertility and Yield and Quality of Groundnut in Southern India

Laxmanarayanan

Prakash

Dhumgond

et al. 2020

J Soil Sci Plant Nutr

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Slag-based gypsum (SBG) is a unique synthetic gypsum which is alkaline in nature, besides calcium (Ca) and sulphur (S); it contains appreciable amounts of iron (Fe), silicon (Si), phosphorus (P) and zinc (Zn). In this study, we evaluated the efficacy of SBG as a source of S, Ca and Si for groundnut in comparison with natural gypsum (NG). The effect of different levels and time of application of SBG on soil fertility and yield and quality of groundnut were also studied. Field experiments were conducted with five treatments which includes two levels of SBG (500 and 625 kg ha −1) applied as basal and basal + split and one level of NG (500 kg ha −1) applied as basal. Basal and basal + split applications of SBG significantly increased the pod and haulm yield of groundnut, pH, electrical conductivity and plant-available nutrients in post-harvest soil. However, N:S ratio, kernel and protein yield and oil content did not vary with SBG application. Applied S, Ca and Si as SBG and their uptake were positively correlated with plant-available S, Ca and Si and pod, oil and protein yield of groundnut, respectively. Basal and basal + split applications of SBG resulted in a similar effect on soil fertility and yield and quality of groundnut. Findings from this study show that SBG can be a potential alternative for NG as a source of S, Ca and Si for groundnut production. Among the treatments, basal and basal + split applications of 625 kg SBG ha −1 substantially improved the fertility of soils and yield and quality of groundnut.

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Section: Discussionsupporting

confidence: 59%

Slag-Based Gypsum as a Source of Sulphur, Calcium and Silicon and Its Effect on Soil Fertility and Yield and Quality of Groundnut in Southern India

Laxmanarayanan

Prakash

Dhumgond

et al. 2020

J Soil Sci Plant Nutr

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“…However, these sideeffects may have been enhanced by low Si level. Yet once available P content increases up to 17.8-20.3 mg kg −1 at P h level ( Table 2), the increase in bioavailable Si is beneficial to rice plants by decreasing P uptake (data not shown; Ma and Takahashi, 1989;Owino-Gerroh and Gascho, 2005;Greger et al, 2018), which, in turn, decreases plant P content (Ma and Takahashi, 1990). This Si-induced decrease in plant P uptake can also result from the molecular mechanism of down-regulating the expression of P transporter gene, OsPT6 in rice (Hu et al, 2018).…”

Section: Effects Of Silicon-phosphorus Supply On Rice Shoot Biomass Amentioning

confidence: 99%

Combined Silicon-Phosphorus Fertilization Affects the Biomass and Phytolith Stock of Rice Plants

Guo

Cornélis

et al. 2020

Front. Plant Sci.

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Phytoliths are silica bodies formed in living plant tissues. Once deposited in soils through plant debris, they can readily dissolve and then increase the fluxes of silicon (Si) toward plants and/or watersheds. These fluxes enhance Si ecological services in agricultural and marine ecosystems through their impact on plant health and carbon fixation by diatoms, respectively. Fertilization increases crop biomass through the supply of plant nutrients, and thus may enhance Si accumulation in plant biomass. Si and phosphorus (P) fertilization enhance rice crop biomass, but their combined impact on Si accumulation in plants is poorly known. Here, we study the impact of combined Si-P fertilization on the production of phytoliths in rice plants. The combination of the respective supplies of 0.52 g Si kg -1 and 0.20 g P kg −1 generated the largest increase in plant shoot biomass (leaf, flag leaf, stem, and sheath), resulting in a 1.3-fold increase compared the control group. Applying combined Si-P fertilizer did not affect the content of organic carbon (OC) in phytoliths. However, it increased plant available Si in soil, plant phytolith content and its total stock (mg phytolith pot −1 ) in dry plant matter, leading to the increase of the total amount of OC within plants. In addition, P supply increased rice biomass and grain yield. Through these positive effects, combined Si-P fertilization may thus address agronomic (e.g., sustainable ecosystem development) and environmental (e.g., climate change) issues through the increase in crop yield and phytolith production as well as the promotion of Si ecological services and OC accumulation within phytoliths.

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“…Many studies have shown that the increased soil P availability under high Si can be explained by Si competition with P for binding at the surface of soil minerals resulting in P mobilization [ 96 , 97 , 98 , 99 , 100 , 101 , 102 ]. Several studies suggest that the competitive ability of Si against P may be pH-dependent [ 21 , 103 , 104 , 105 ]. The effect of Si on soil P mobilization may depend on Si fertilizer form, Si level, soil mineralogy and plant P uptake.…”

Section: Mechanisms Of Si Alleviation Of P-deficiency Stress In Plmentioning

confidence: 99%

“…At soil pH values at or below pH 5, Al ions are solubilized into the soil solution and dramatically inhibit root growth and function, in turn severely impairing water and nutrient acquisition by roots and, thereby, leading to a significant reduction in crop yields [ 8 , 106 , 107 ]. An increase in soil pH due to Si application can effectively improve the growth condition of plant roots suffering from Al toxicity [ 24 ], thus resulting in increased transpiration and, therefore, greater P uptake and utilization [ 21 ]. Furthermore, high soil pH, within a certain range, can facilitate soil P activization and plant P uptake [ 108 ].…”

Section: Mechanisms Of Si Alleviation Of P-deficiency Stress In Plmentioning

confidence: 99%

“…Excess-P stress is also observed in some greenhouse soils subjected to heavy application of P fertilizer or in hydroponic culture where a high P concentration is supplied [ 9 ]. The beneficial effect of Si on P deficiency or excess stress has been reported for a number of plant species [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. To the best of our knowledge, however, no review has discussed the roles and mechanisms of Si in alleviating P-imbalance stress in plants.…”

Section: Introductionmentioning

confidence: 99%

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Role of Silicon in Mediating Phosphorus Imbalance in Plants

Qin

et al. 2020

Plants

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The soil bioavailability of phosphorus (P) is often low because of its poor solubility, strong sorption and slow diffusion in most soils; however, stress due to excess soil P can occur in greenhouse production systems subjected to high levels of P fertilizer. Silicon (Si) is a beneficial element that can alleviate multiple biotic and abiotic stresses. Although numerous studies have investigated the effects of Si on P nutrition, a comprehensive review has not been published. Accordingly, here we review: (1) the Si uptake, transport and accumulation in various plant species; (2) the roles of phosphate transporters in P acquisition, mobilization, re-utilization and homeostasis; (3) the beneficial role of Si in improving P nutrition under P deficiency; and (4) the regulatory function of Si in decreasing P uptake under excess P. The results of the reviewed studies suggest the important role of Si in mediating P imbalance in plants. We also present a schematic model to explain underlying mechanisms responsible for the beneficial impact of Si on plant adaption to P-imbalance stress. Finally, we highlight the importance of future investigations aimed at revealing the role of Si in regulating P imbalance in plants, both at deeper molecular and broader field levels.

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Effect of Silicon on Low pH Soil Phosphorus Sorption and on Uptake and Growth of Maize

Cited by 67 publications

References 13 publications

Slag-Based Gypsum as a Source of Sulphur, Calcium and Silicon and Its Effect on Soil Fertility and Yield and Quality of Groundnut in Southern India

Slag-Based Gypsum as a Source of Sulphur, Calcium and Silicon and Its Effect on Soil Fertility and Yield and Quality of Groundnut in Southern India

Combined Silicon-Phosphorus Fertilization Affects the Biomass and Phytolith Stock of Rice Plants

Role of Silicon in Mediating Phosphorus Imbalance in Plants

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