Chemical pattern of vegetation and topsoil of rangeland fertilized over 21 years with phosphorus sources and limestone

Somavilla, André; Caner, Laurent; Silva, Isley Cristiellem Bicalho da; Bastos, Marília Camotti; Moro, Luciana; Schaefer, Gilmar Luiz; Gatiboni, Luciano Colpo; Santos, Danilo Rheinheimer dos

doi:10.1016/j.still.2020.104759

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…We further support this notion and maintain that this is true even for soil that has not been enriched with additional nutrients. Consequently, we expected that the measured growth parameters of V. sieberiana would be directly influenced by the amount of P available in the soil [64]. The factors that are attributed to low available P include low soil pH (acidic soils) and highly weathered soils, whereby P is absorbed by the presence of soil minerals and P precipitation through Al and Fe [65,66].…”

Section: Discussionmentioning

confidence: 99%

Soil Acidification in Nutrient-Enriched Soils Reduces the Growth, Nutrient Concentrations, and Nitrogen-Use Efficiencies of Vachellia sieberiana (DC.) Kyal. & Boatwr Saplings

Zama

Kirkman

Mkhize

et al. 2022

Plants

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Nitrogen (N) and phosphorus (P) nutrient enrichment is important for grasslands. This study aimed to determine how soils enriched with N and P influenced soil concentration correlations and affected the growth kinetics, mineral nutrition, and nitrogen-use efficiencies of Vachellia sieberiana grown in a greenhouse experiment. The soils used as the growth substrate were analysed and showed extreme acidity (low soil pH, 3.9). Nitrogen-enriched soils were more acidic than P-enriched soils. Exchangeable acidity was strongly negatively correlated with an increase in soil pH, with soil pH between 3.9 and 4.1 units showing the strongest decline. Plant saplings showed increased root biomass, shoot biomass, total biomass, and plant N and P concentrations when grown in soils with high soil P concentrations. Extreme soil acidification in N-enriched soil was one of the main factors causing P unavailability, decreasing sapling growth. Extreme soil acidification increased concentrations of toxic heavy metals, such as Al which may be alleviated by adding lime to the extremely acidic soils. Research implications suggest that soil pH is an important chemical property of the soil and plays a significant role in legume plant growth. Legume species that are unable to tolerate acidic soils may acquire different strategies for growth and functioning.

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Section: Discussionmentioning

confidence: 99%

Soil Acidification in Nutrient-Enriched Soils Reduces the Growth, Nutrient Concentrations, and Nitrogen-Use Efficiencies of Vachellia sieberiana (DC.) Kyal. & Boatwr Saplings

Zama

Kirkman

Mkhize

et al. 2022

Plants

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“…Traditional methods for monitoring parameters related to forage quality often require costly, time-consuming laboratory analysis and specialized labor, as is the case with the evaluation of crude protein (WANG et al, 2023), dry matter (SOMAVILLA et al, 2021), and neutral detergent fiber (PETERS et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Relationship between spectral indices and quality parameters of tifton 85 forage

Souza,

Costa,

Carvalho

et al. 2024

Rev. Caatinga

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Computer vision systems can be an alternative to traditional methods of analyzing the quality of forage crops, allowing the instantaneous, non-destructive monitoring of the crop, with cost reduction. This study aimed to evaluate the quality parameters of Tifton 85 (Cynodon spp.) using digital images, relating spectral indices to the quality parameters of this forage. In the experimental area, four levels of nitrogen fertilization were applied and the analyses were made at different times after the standardization cut (14, 28, 42, and 56 days). The quality parameters evaluated were mineral matter, crude protein, and neutral detergent fiber. From images obtained in the visible (RGB) and near-infrared (RGNIR) spectral regions, spectral indices were generated. Principal component analysis was applied to summarize the information obtained by spectral indices into a single principal component (PCI). PCI associated with spectral indices was related to forage quality parameters for each cutting time using simple quadratic regression models. The relationships between mineral matter and spectral indices were variable over time. Crude protein and neutral detergent fiber showed the highest relationships with the spectral indices obtained by RGNIR images already at the initial times. Thus, although the RGB images have shown satisfactory results to obtain information about the quality of Tifton 85, the NIR band tends to increase the reliability of the relationships at early times.

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P-legacy effect of soluble fertilizer added with limestone and phosphate rock on grassland soil in subtropical climate region

Somavilla

Caner

Bortoluzzi

et al. 2021

Soil and Tillage Research

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Chemical pattern of vegetation and topsoil of rangeland fertilized over 21 years with phosphorus sources and limestone

Cited by 3 publications

References 39 publications

Soil Acidification in Nutrient-Enriched Soils Reduces the Growth, Nutrient Concentrations, and Nitrogen-Use Efficiencies of Vachellia sieberiana (DC.) Kyal. & Boatwr Saplings

Soil Acidification in Nutrient-Enriched Soils Reduces the Growth, Nutrient Concentrations, and Nitrogen-Use Efficiencies of Vachellia sieberiana (DC.) Kyal. & Boatwr Saplings

Relationship between spectral indices and quality parameters of tifton 85 forage

P-legacy effect of soluble fertilizer added with limestone and phosphate rock on grassland soil in subtropical climate region

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