Effects of silicon fertigation on dry matter production and crude protein contents of a pasture

Buchelt, Antônio Carlos; Prado, Renato de Mello; Caione, Gustavo; Carneiro, Márcia de Almeida; Litter, Felipe Adolfo

doi:10.1007/s42729-021-00615-9

Cited by 6 publications

(8 citation statements)

References 22 publications

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“…Moreover, it is evident that silicon application in plants with sufficient P nutrition led to decreased lignin content, which may enhance fiber digestibility [ 63 ], and joins other promising results in grasses without nutritional stress [ 92 ]. Additionally, our study revealed that silicon supplementation increased protein content in plants with optimal P nutrition, corroborating findings observed in Zuri ( M. maximus ) and Ipyporã (Urochloa ruziziensis x U. brizantha ) grasses following silicate fertilization [ 28 ].…”

Section: Discussionsupporting

confidence: 86%

“…Both experiments followed a 3 × 2 factorial design, encompassing three phosphorus nutritional states: deficient (no P application), sufficient (200 mg dm − 3 of P) [ 27 ], and excessive (600 mg dm − 3 of P). These states were combined with the absence of silicon (Si) application (no Si) and the presence of Si (1.5 mM Si solution) [ 28 ]. The experiments were arranged in a completely randomized design with four replications.…”

Section: Methodsmentioning

confidence: 99%

“…Silicon application occurred daily from the sowing date, utilizing a 1.5 mmol L − 1 Si solution [ 28 ]. Colloidal nanosilica served as the Si source, characterized by particle sizes ranging from 8.5 to 9.7 nm, a specific surface area of 300 m 2 g − 1 , and a pH of 10.5.…”

Section: Methodsmentioning

confidence: 99%

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Nanosilica enhances morphogenic and chemical parameters of Megathyrsus maximus grass under conditions of phosphorus deficiency and excess stress in different soils

de Faria Melo,

Amaral,

de Moura Zanine

et al. 2023

BMC Plant Biol

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Phosphorus (P) imbalances are a recurring issue in cultivated soils with pastures across diverse regions. In addition to P deficiency, the prevalence of excess P in soil has escalated, resulting in damage to pasture yield. In response to this reality, there is a need for well-considered strategies, such as the application of silicon (Si), a known element for alleviating plant stress. However, the influence of Si on the morphogenetic and chemical attributes of forage grasses grown in various soils remains uncertain. Consequently, this study aimed to assess the impact of P deficiency and excess on morphogenetic and chemical parameters, as well as digestibility, in Zuri guinea grass cultivated in Oxisol and Entisol soils. It also sought to determine whether fertigation with nanosilica could mitigate the detrimental effects of these nutritional stresses. Results revealed that P deficiency led to a reduction in tiller numbers and grass protein content, along with an increase in lignin content. Conversely, P excess resulted in higher proportions of dead material and lignin, a reduced mass leaf: stem ratio in plants, and a decrease in dry matter (DM) yield. Fertigation with Si improved tillering and protein content in deficient plants. In the case of P excess, Si reduced tiller mortality and lignin content, increased the mass leaf:stem ratio, and enhanced DM yield. This approach also increased yields in plants with sufficient P levels without affecting grass digestibility. Thus, Si utilization holds promise for enhancing the growth and chemical characteristics of forage grasses under P stress and optimizing yield in well-nourished, adapted plants, promoting more sustainable pasture yields.

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Section: Discussionsupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

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Nanosilica enhances morphogenic and chemical parameters of Megathyrsus maximus grass under conditions of phosphorus deficiency and excess stress in different soils

de Faria Melo,

Amaral,

de Moura Zanine

et al. 2023

BMC Plant Biol

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“…This indicates that the importance of these milled silicate rocks for agriculture is underestimated, as was already warned in a recent review by [ 8 ], but with the advancement of research, this condition should be revised. It is important to carry out further studies so that other benefits of this product can be evaluated, such as the release of Si, because reports have indicated that not only is it a beneficial element but it can also favor the growth of forages [ 34 , 35 ], as well as its ability to sequester atmospheric CO 2 [ 4 ].…”

Section: Discussionmentioning

confidence: 99%

The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species

da Rocha Neto,

de Mello Prado,

da Cruz

2024

Plants

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Cover crops can be used to accelerate the solubilization process of low-solubility fertilizers; thus, the aim of this study was to evaluate the potential of grasses in solubilizing potassium from phonolite rock powder. With a 2 × 5 factorial scheme, two doses of phonolite rock powder, equivalent to 0 and 8 t ha−1, were combined with four grass species (Urochloa ruziziensis, U. decumbens, U. humidicola, and Andropogon gayanus), besides a control treatment without any cover crop. The dry matter production of the aerial parts of the plants was evaluated at days 40 and 70 post-emergence, and then the concentration of potassium in the plants and the soil was evaluated (exchangeable, non-exchangeable, structural, and total potassium contents). In the soil, the phonolitic rock powder increased the exchangeable, non-exchangeable, structural, and total K contents, favoring the absorption of K and the production of the dry mass of the three Urochloa, but U. decumbens stood out because it promoted greater availability of K in the system compared to the cultivation of other plant species. This research proposes the inclusion of U. decumbens in production systems that receive phonolitic rock, constituting a sustainable strategy to improve its agronomic efficiency.

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“…Silicon was supplied daily from the moment of sowing until the last cut of the plants, using a solution of 1.5 mmol L −1 of Si 36 . The solution was prepared with colloidal nanosilica (particle size between 8.5 and 9.7 nm, specific surface area of 300 m 2 g −1 , and pH 10.5).…”

Section: Methodsmentioning

confidence: 99%

Nanosilica modulates C:N:P stoichiometry attenuating phosphorus toxicity more than deficiency in Megathyrsus maximus cultivated in an Oxisol and Entisol

Melo

Amaral

Prado

et al. 2023

Sci Rep

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Silicon (Si) nanoparticles can attenuate nutritional disorders caused by phosphorus in forages through nutritional homeostasis. This paper aims to evaluate the effects of P deficiency and toxicity in Megathyrsus maximus cultivated in two types of soils and to verify whether Si application via fertigation can mitigate these imbalances. The following two experiments were carried out: cultivation of forage plants in pots with Entisol and Oxisol, in a 3 × 2 factorial design, with three nutritional levels of phosphorus (deficient, adequate, and excessive) and two Si concentrations in the irrigation water (0 and 1.5 mmol L−1). Height, number of tillers, rate of leaf senescence, dry matter production, C:N, C:Si, C:P, and N:P ratios; and C, P, and N use efficiencies were evaluated in two growth cycles. P imbalances hampered carbon assimilation, C:N:P homeostasis, and dry matter production. Nanosilica fertigation promoted silicon uptake, improving C:N:P homeostasis and nutritional efficiency in plants under P deficiency and toxicity. Leaf senescence was reduced with addition of Si in plants grown in Oxisol in the three nutritional states of P. Silicon attenuated the stress caused by P toxicity in Entisol and Oxisol, improving production in plants without nutritional stress in Oxisol. The supply of Si nanoparticles in the cultivation of M. maximus can contribute to a more efficient and sustainable use of phosphorus in pastures.

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Effects of silicon fertigation on dry matter production and crude protein contents of a pasture

Cited by 6 publications

References 22 publications

Nanosilica enhances morphogenic and chemical parameters of Megathyrsus maximus grass under conditions of phosphorus deficiency and excess stress in different soils

Nanosilica enhances morphogenic and chemical parameters of Megathyrsus maximus grass under conditions of phosphorus deficiency and excess stress in different soils

The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species

Nanosilica modulates C:N:P stoichiometry attenuating phosphorus toxicity more than deficiency in Megathyrsus maximus cultivated in an Oxisol and Entisol

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