Phosphorus fertilization in the implantation of a silvopastoral system: morphogenic and structural characteristics of Mombaça grass

Pacheco, Thais Valéria Souza Silva; Sousa, Luciano Fernandes; Santos, Antônio Clementino dos; Santos, José Geraldo Donizetti dos; Dim, Valdinéia Patrícia; Silva, Hiran Marcelo Siqueira da; Pacheco, Weverton Filgueira

doi:10.1590/s1519-99402122012021

Cited by 3 publications

(5 citation statements)

References 22 publications

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“…While the effects of phosphorus (P) deficiency on grasses have been well-documented [ 1 , 3 , 49 ], there is relatively limited research focusing on the morphogenic processes of grasses used in pastures under P deficiency [ 50 , 51 ]. This is a notable gap in the literature because understanding how nutritional disorders of P affect these plants and how they respond morphogenetically to such stress is crucial.…”

Section: Discussionmentioning

confidence: 99%

“…This difference may be explained by the fact that plants in Entisol likely utilized the small amount of added P (4 mg dm − 3 ) more efficiently to enable minimal growth, which accounted for only 2% of the recommended dose [ 27 ]. However, this was sufficient to mitigate the severity of P deficiency to a certain extent in Entisol, which has a lower phosphate adsorption capacity [ 2 , 49 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, advanced forage regrowth cycles may exacerbate P deficiency in the soil due to nutrient export in the biomass, potentially enhancing the benefits of silicon in plants. Nonetheless, this remains a subject for future research [ 51 ].…”

Section: Discussionmentioning

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: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

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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show abstract

“…The effects of P de ciency on grasses have been documented [1,3,42] . However, studies focusing on the morphogenic processes of grasses used in pastures under P de ciency are less abundant [43,44] . It is a concern because the damage caused by nutritional disorders of the nutrient in the plant and its responses to this stress are not known in depth, which are unveiled with morphogenesis studies.…”

Section: De Ciency and Excess Of P Without The Use Of Si In Pasture M...mentioning

confidence: 99%

“…However, it was enough for the de ciency of this nutrient to be more moderate in Entisol. It occurs because this soil has a lower phosphate adsorption capacity [2,42,44] .…”

Section: De Ciency and Excess Of P Without The Use Of Si In Pasture M...mentioning

confidence: 99%

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

Melo

Amaral

Zanine

et al. 2023

Preprint

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In cultivated soils with pastures in different regions of the world, phosphorus (P) imbalances are recurrent. In addition to P deficiency, the occurrence of areas with excess P in the soil has increased, with damage to pasture production. This reality requires the search for thoughtful strategies such as the use of silicon (Si), which is an element known to attenuate stress in plants. However, the action of Si on morphogenetic and chemical characteristics of grasses forages cultivated in different soils is not known. Therefore, this study aimed to evaluate the effects of P deficiency and excess on morphogenetic and chemical parameters, and on the digestibility of Zuri guinea grass cultivated in Oxisol and Entisol, and to analyze whether fertirrigation with nanosilica can mitigate the damage caused by these nutritional stresses. P deficiency decreased tiller number and grass protein content, and increased lignin content, while P excess increased the percentage of dead material and lignin, and decreased the leaf:stem ratio of plants, and both stresses decreased dry matter (DM) production. Fertirrigation with Si promoted better tillering and protein in deficient plants. In the excess of P, Si reduced tiller mortality and the lignin content of the plants, increasing the leaf:stem ratio and DM production, also increasing the production of plants with P sufficiency, without affecting the digestibility of the grass. Thus, the perspective is that the use of Si can improve the growth and chemical characteristics of forage grasses under P stress, and optimize production in nourished adapted plants, confident for more sustainable pasture production.

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Wood Ash as a Liming Material for Production of Paiaguás Grass Pasture in the Brazilian Cerrado

Souza Silva Filho,

Bonfim-Silva,

Pereira Freire Ferraz

et al. 2024

Communications in Soil Science and Plant Analysis

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Phosphorus fertilization in the implantation of a silvopastoral system: morphogenic and structural characteristics of Mombaça grass

Cited by 3 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

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

Wood Ash as a Liming Material for Production of Paiaguás Grass Pasture in the Brazilian Cerrado

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