Valor nutritivo do capim-xaraés em três intensidades luminosas

Barros, Jeskarlândia Silva; Meirelles, Paulo Roberto de Lima; Gomes, Vinicius Carreteiro; Pariz, Cristiano Magalhães; Fachiolli, Daniele Floriano; Santana, Erikelly Aline Ribeiro de; Gomes, T. G. J; Costa, Ciniro; Castilhos, André Michel de; Souza, Daniel Martins de

doi:10.1590/1678-4162-10801

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…Bromatological components were determined following the methods of the Association of Official Analytical Chemists. Barros et al (2019) also used the same analysis methods with Xaraés grass.…”

Section: Evaluation Of Yield and Bromatological Componentsmentioning

confidence: 99%

“…This finding is important because it shows that one of the objectives of this study was achieved, that is, tailings have considerable productive potential. Barros et al (2019) observed that soils with high water contents decrease plant dry matter yield as it increases water contents in cells and therefore decreases dry matter contents. We, however, observed the opposite since irrigation increases reflected significant increases in FDM.…”

Section: Weather Datamentioning

confidence: 99%

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Xaraés Grass Under Different Irrigation Depths to Recover Areas Contaminated With Iron Mining Tailings

et al. 2022

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Iron mining tailings have limitations for plant growth and development due to low fertility, coupled with great restriction of physical characteristics such as low water retention, high density, and lack of structure. This study aimed to evaluate whether different irrigation depths applied to Xaraés grass grown in mining tailings influence its yield and bromatological aspects. The experiment was carried out in a completely randomized design with five irrigation depths (40, 60, 80, 100, and 120% of the crop evapotranspiration), two additional treatments consisting of grass grown in tailings with soil conditioner and in natural soil, and three repetitions. Forage dry mass, plant height, leaf: stem ratio, as well as neutral detergent fibre, acid detergent fibre, crude protein, and mineral matter content, were evaluated during four cutting cycles. Xaraés grass could establish and produce forage despite cultivation limitations in iron mining tailings, which are due to their properties. Irrigation depths showed positive and linear effects on Xaraés grass dry matter yield and heights of plants grown in iron mining tailings. The soil conditioner has potential for use in pasture cultivation in iron mining tailing.

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Section: Evaluation Of Yield and Bromatological Componentsmentioning

confidence: 99%

Section: Weather Datamentioning

confidence: 99%

Xaraés Grass Under Different Irrigation Depths to Recover Areas Contaminated With Iron Mining Tailings

et al. 2022

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“…In recent decades, new forages adapted to the most diverse edaphoclimatic conditions have been launched by the research centers, however these studies are mainly focused on the Central Region of Brazil (Souza & Martuscello, 2017), with incipient studies of this nature in the Brazilian Semiarid region, particularly (Maranhão et al, 2019). There is a consensus in the classical literature that forage plants develop certain mechanisms of adaptation to drought, such as stomatal closure (Monteiro, Cruz, Nardin, & Santos, 2014), osmotic adjustment (Marijuan & Bosch, 2013), adjustment of the cell wall (Barros et al, 2019), production of smaller leaves (Santos et al, 2013), reduction of leaf area (Maranhão et al, 2019) and increase in root density and depth (Pezzopane et al, 2015), however in view of the launch of new species on the market, there is a need to assess the mechanisms of tolerance to water deficit.…”

Section: Inmentioning

confidence: 99%

Morphophysiology of tropical grasses under different water supply in two growing seasons: II. BRS Massai and BRS Tamani grasses

Maranhão

Pompeu

Araújo

et al. 2021

Semina: Ciênc. Agrár.

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This study aimed to evaluate the physiological parameters and the biomass flow and structural characteristics of BRS Massai and BRS Tamani grasses under different irrigation conditions. The rating of gas exchange, biomass flow and structural characteristics were performed in dry periods and dry/rainy season, under the water supply of 30; 60; 90 and 120% of the reference evapotranspiration (ETo). The experimental design was completely randomized in a factorial arrangement 4x2 (water supply and grass). The experiment was conducted in pots with capacity for 7.5 dm³, using as substrate layer of 0-0.2 m soil. There was no effect (P < 0.05) between the gas exchange in the dry period, having the largest growing parameters of irrigation schemes. In the transition period of dry/rainy, we observed a reversal behavior in relation to the dry period, showing a rapid recovery of grasses under the minor water supply. It was observed quadratic behavior to concentrations of CO2 in the leaf mesophilic (Ci) with maximum point to the BRS Massai grass and minimum point to the BRS Tamani grass, where the major and minor Ci were 119 and 48 ppm in the water supply of 107 and 35% of ETo, respectively. In relation to the biomass flow, the BRS Tamani grass presented greater stem elongation rate and leaf senescence rate in relation to BRS Massai in both periods assessed. In the dry period, we observed a higher biomass production of green leaf blades in the BRS Tamani grass, while in the transition dry/rainy season, the results for this variable were similar, and at the same time that observed higher accumulation of green culm biomass to the BRS Tamani grass, which certainly affected its structure. It is concluded that the application of a minimum daily water supply of 30% of ETo allows the maintenance of BRS Massai and BRS Tamani grasses without incurring the death of tillers and reduction of regrowth vigor, whereas the water supply of 90% of ETo favors the morphophysiological characteristics, especially of BRS Tamani grass.

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Structure and nutritional value of BRS Zuri grass under shading

Janusckiewicz

Paiva

Fernandes

et al. 2021

Rev. bras. saúde prod. anim.

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The objective was to determine the structural and nutritive parameters for Panicum maximum cv. BRS Zuri under a Eucalyptus shading system, in rainy and dry seasons. At the beginning of each season, the treatments (foliar fertilization levels of 0, 3, 6 and 9 L ha-1) were applied and evaluated at 28, 56, and 84 growing days. The treatments did not affect significantly (p ≥ 0.05) the evaluated parameters. The systems (shading and full sun) and seasons did not change (p ≥ 0.05) forage and root masses. The leaf crude protein content was higher (p ≤ 0.05) in the dry season. Height, leaf mass, stem and dead material, neutral and acid detergent fiber contents, and in vitro dry matter digestibility were affected (p ≤ 0.05) by the system x season. The growing days did not affect (p ≥ 0.05) forage mass. The mass of dead material decreased (p ≤ 0.05) over the evaluated intervals. The other parameters were affected (p ≤ 0.05) by system × growing days. Based on the results, the forage and root masses show that the cv. BRS Zuri is adapted to the shading in the proposed experimental conditions. These masses added to the crude protein content indicate adaptation to low rainfall, inherent to the dry season, while foliar fertilization applied at the beginning of seasons did not affect the structural and nutritive parameters of BRS Zuri grass.

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Valor nutritivo do capim-xaraés em três intensidades luminosas

Cited by 5 publications

References 14 publications

Xaraés Grass Under Different Irrigation Depths to Recover Areas Contaminated With Iron Mining Tailings

Xaraés Grass Under Different Irrigation Depths to Recover Areas Contaminated With Iron Mining Tailings

Morphophysiology of tropical grasses under different water supply in two growing seasons: II. BRS Massai and BRS Tamani grasses

Structure and nutritional value of BRS Zuri grass under shading

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