Impact of different silvicultural techniques on the productive efficiency of Ilex paraguariensis A.St. Hill

Westphalen, Danielle Janaina; Ângelo, Alessandro Camargo; Rossa, Überson Boaretto; Bognola, I. A.; Martins, Carlos Eduardo Nogueira

doi:10.1007/s10457-019-00451-y

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…Esse formato de copa relativamente menos esbelto (maior largura e menor altura que o presente estudo) reflete possivelmente as condições de cultivo a pleno sol, em que as plantas não precisam crescer tanto em altura em busca de luminosidade, enquanto que o presente trabalho trata de plantas de erva-mate que crescem sob a copa de outras árvores e, portanto, precisam "subir" em busca de luz solar. Nesse contexto, é notório que o ambiente de luz exerce influência sobre o diâmetro de copa da erva-mate, de forma que ambientes com 45% de luminosidade favorecem maior diâmetro (Westphalen et al, 2020).…”

Section: Methodsunclassified

“…Portanto, dada a importância econômica, social e ambiental do cultivo da ervamate, o uso da modelagem pode contribuir para reduzir as limitações, elevado custo e reduzida praticidade de métodos tradicionais de avaliação da biomassa de I. paraguariensis (Wendling et al, 2016), principalmente em ambientes naturais com variações de luminosidade, que têm grande influência na produtividade (Westphalen et al, 2020) e com a crescente importância econômica da produção de erva-mate.…”

Section: Methodsunclassified

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Modelling commercial biomass of native yerba mate in the South-Center region of Paraná

Signor,

Watzlawick,

Gomes

et al. 2024

OLEL

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The cultivation of the yerba mate species is of great importance, as in addition to helping to preserve forest remnants, it is also a source of income for rural producers. However, incorrect management can result in low productivity in yerba mate cultivation. Therefore, it is of great importance to evaluate the production of this species, using appropriate techniques. Thus, the present study aimed to evaluate the commercial biomass (BC) of a native yerba mate cultivation system, as well as adjust equations to estimate commercial biomass individually and per hectare for yerba mate in similar conditions. The study area is located on a private property in the municipality of Inácio Martins, where permanent sampling units were installed with a total area of 1.25 ha, in which data were collected from all yerba mate individuals that were pruned to obtain commercial biomass, and some dendometric variables were then measured. Based on the collected variables, commercial biomass estimates were made by applying the Stepwise Forward procedure. In addition to individual BC estimates for yerba mate, equations were also adjusted for estimates per unit area (ha). To evaluate the fit of the equations, the following criteria were used: the adjusted Coefficient of Determination (R²aj), the Standard Error of the Estimate in percentage (Syx%) and the graphical distribution of the residuals. The Stepwise procedure adjusted the best equations, with values for the coefficient of determination above 0.8 for individual estimates and above 0.9 for estimates per hectare and errors between 20 and 30% for both situations. Estimates of commercial yerba mate biomass using a single, easily obtainable variable showed errors of around 40% and heterogeneity in the graphic dispersion of residues. The use of the Stpewise tool can enable a better economic assessment of yerba mate managed areas.

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Section: Methodsunclassified

Modelling commercial biomass of native yerba mate in the South-Center region of Paraná

Signor,

Watzlawick,

Gomes

et al. 2024

OLEL

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“…Previous studies demonstrated that changes in the cultivation and processing conditions affect the chemical composition and the quality of the nutritional value of Yerba Mate [16]. More specifically, different processes can result in IP products with huge variations in their nutrient content [17][18][19]. Therefore, the evaluation of the nutritional value of IP treated with different industrial processes is critical to determine the optimal costeffective process required to produce Yerba Mate for human consumption and/or for feed supplement for livestock production.…”

Section: Introductionmentioning

confidence: 99%

Effect of Processing on the Nutritional Quality of Ilex paraguariensis

Ramirez

Mohamad²,

Alarcon-Segovia³

et al. 2022

Applied Sciences

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Ilex paraguariensisA.St.-Hil. (IP) is a South American plant. IP-dried leaves have been consumed in the form of infusion by indigenous peoples since pre-Hispanic times. In recent years, IP has gained many beverage markets and new ways of consumption, reaching the category of a global consumer product. A side consequence is the increase in IP crops for the specification of human consumption. This situation is the driving force for the investigation of new uses of IP, including feed supplements for livestock and functional food for human consumption. A deep understanding of the influence of processing on the nutritional value of IP is crucial for the development of these alternative products. It is known that the quality and quantity of nutritional compounds occurring in IP depend on the origin, plant condition, and harvest time. However, the effects of the drying method of the leaves and the ageing time of dried leaves on the final IP products deserve further investigation. The present work presents the variation of the nutritional, digestibility, energy, and mineral assets of IP submitted to three different processes: open-air dried and crushed; dried under direct fire and grounded; and dried under direct fire, grounded, and aged for 6 months under controlled conditions. The presence of agrochemical residues and antinutritional factors were also studied. Processing widely influenced the nutritional and digestibility assets of IP leaves. The inorganic content (K, Mg, Ca, P, Zn, B and Fe) significantly varied among leaves treated using different processes. IP samples dried in open air resulted in the highest % of crude protein, Mg, K, S, and Mn. IP samples dried under direct fire resulted in the highest % of carbohydrates and Fe. IP samples dried under direct fire and aged for 6 months resulted in the highest % of digestible matter, Ca, P, Zn, and B. The results also showed quality protein levels between 10.03 and 19.06% of dry matter. The digestibility values showed that IP leaves are suitable for human functional foods and for enriched supplements for livestock feeds. No traces of agrochemicals or antinutritional factors were found.

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Arbuscular mycorrhizal fungal community assembly in agroforestry systems from the Southern Brazil

et al. 2021

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Impact of different silvicultural techniques on the productive efficiency of Ilex paraguariensis A.St. Hill

Cited by 10 publications

References 7 publications

Modelling commercial biomass of native yerba mate in the South-Center region of Paraná

Modelling commercial biomass of native yerba mate in the South-Center region of Paraná

Effect of Processing on the Nutritional Quality of Ilex paraguariensis

Arbuscular mycorrhizal fungal community assembly in agroforestry systems from the Southern Brazil

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