Características morfogênicas, estruturais e produtivas de acessos de capim-buffel

Moreira, José Armando de Sousa; Fagundes, Jaílson Lara; Mistura, Claúdio; Lemos, Nailson Lima Santos; Moreira, J. N.; Backes, Alfredo Acosta; Morais, Juciléia Aparecida da Silva; Oliveira, Veronaldo Souza de; Moreira, Andréia Luciane

doi:10.5433/1679-0359.2015v36n1p391

Cited by 6 publications

(7 citation statements)

References 12 publications

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“…These values are lower than those found by Moreira et al (2015) for the same cultivar of buffel grass, with a SnR of 127 mm day -1 , likely due to the plants being evaluated for a longer period in the present study (70 days).…”

Section: Resultscontrasting

confidence: 54%

“…OB was remarkable regarding this variable, which allowed greater fluxes of leaf growth and lifespan, characteristics that are determined by NPK levels in the soil, with N mainly impacting on the expression of morphogenic variables leading to an increase in LER, and with K increasing the leaf length (LL) (HODGSON, 1990). Moreira et al (2015) found a mean LL of 17.53 days, while evaluating the morphogenic characteristics of six buffel grass accessions in a period of 70 days. The lower LL found in the present study is also associated with the shorter evaluation period, considering 30% inflorescence.…”

Section: Resultsmentioning

confidence: 99%

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Morphogenic, structural, and productive characteristics of Cenchrus ciliaris L. grown using different levels of caprine and ovine biofertilize

Silva¹,

Honorato²,

Queiróz³

et al. 2017

SCA

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The aim of this study was to evaluate the morphogenic, structural, and productive characteristics of Cenchrus ciliaris L. in response to different doses of biofertilizers that originate from the anaerobic biodigestion of goat and sheep fecal matter on Yellow Argisoil. The experiment was performed in a greenhouse, in a completely randomized factorial design using two types of biofertilizers and five dosages (0%, 2.5%, 5.0%, 7.5%, and 10% of soil volume), with four repeats, for the duration of two vegetative cycles. In the first cycle, there was an increase in leaf lifespan and leaf/stem ratio with the use of 10% and 7.5% caprine biofertilizer, respectively. From the second cycle, doses of biofertilizers between 7.5% and 10% led to an improvement in the development of the morphogenic variables - leaf sprouting rate, leaf and pseudostem elongation rate, leaf lifespan, and senescence, as well as the structural characteristics - expanded leaf length and width, number of sprouting, expanded and live leaves, and expanded/expanding leaf ratio, resulting in a 73% increase in biomass. It was concluded that the use of biofertilizers improves the main morphogenic and structural characteristics of Cenchrus ciliaris L., resulting in increased fodder mass yield.

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Section: Resultscontrasting

confidence: 54%

Section: Resultsmentioning

confidence: 99%

Morphogenic, structural, and productive characteristics of Cenchrus ciliaris L. grown using different levels of caprine and ovine biofertilize

Silva¹,

Honorato²,

Queiróz³

et al. 2017

SCA

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“…Only the leaf blade width of Andropogon grass was affected by the regrowth period adjusted to the positive linear equation, with an increase of 68.81% from 21 to 63 days. According to Moreira et al (2015), leaf length and width are decisive factors in establishing the leaf area, allowing a greater interception of light and consequently higher photosynthesis rates.…”

Section: Cultivarsmentioning

confidence: 99%

Morphogenic and structural characteristics of tropical forage grasses managed under different regrowth periods in the Brazilian semi-arid region

Pereira

Neto

Difante

et al. 2019

SCA

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The objective of this study was to evaluate the morphogenetic and structural characteristics of tropical grasses managed under different regrowth periods. The experiment was conducted at the Federal Institute of Science and Technology Education of Rio Grande do Norte, located in the municipality of Apodi-RN, Brazil. The study design was in randomized blocks and the treatments were allocated in a 3x4 factorial arrangement, with three cultivars (Andropogon, Buffel and Massai) in four regrowth periods (21, 35, 49 and 63 days). The interaction between cultivar and age was significant for all studied variables, with the exception of leaf blade width and accumulation rate. The highest leaf appearance rates were observed in Buffel grass, regardless of the regrowth age. This characteristic was not influenced by age only in Andropogon grass. Higher stem elongation rates were observed in Buffel grass, while the lowest were observed in Massai grass until 35 days of regrowth, attributed to the presence of inflorescences. Canopy heights in Massai and Andropogon grass were greater than Buffel grass until 35 days of regrowth, Andropogon grass had higher height from 35 days of regrowth than the others. Andropogon grass showed higher rates of accumulation than Massai grass only at 21 days of regrowth, and no effects of regrowth age were observed for this variable. Buffel grass should be defoliated at 21 days, while Andropogon and Massai grass can be managed without losses between 21 and 63 days of regrowth.

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“…With the increase in the vulnerability of agricultural production due to the expansion of semiarid areas and the increase in the global demand for animal products, it is necessary to adopt strategies that make animal production feasible in semiarid regions (MARENGO, 2008;IPCC, 2014). The development and growth of the forage plant vary according to the growth stage, species, cultivar and availability of abiotic growth factors (DARTORA et al, 2013;MOREIRA et al, 2015;MARANHÃO et al, 2018a). It is emphasised that rainfall is the main abiotic modulator of growth of forages under rainfed conditions, since it is commonly seen as an abiotic factor that is more limiting to plant growth and development in semiarid regions.…”

Section: Introductionmentioning

confidence: 99%

Growth indexes of Pennisetum purpureum cv. Roxo cultivated in different seasons under rainfed conditions

Maranhão

Lopes

Alves

et al. 2020

Rev. bras. saúde prod. anim.

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The objective was to estimate the growth indexes of elephant grass cv. Roxo managed under rainfed conditions in different growing seasons. Seven growth ages (9, 18, 27, 36, 45, 54, and 63 days) were evaluated in three growing seasons (rainy, transition and dry). A completely randomised design was adopted, with split-plot arrangement with time repeated measures, with the ages being the plots and the seasons the subplots. Interaction of age x season was observed. The specific leaf area mean was 0.0286 ± 0.0039 during the rainy season. In the transition season, it adjusted to a third-degree polynomial model; in the dry season it declined linearly (0.0003 m2 g-1). The leaf weight ratio adjusted to the third-degree polynomial model in the rainy and dry seasons, and in the transition season it was maximised at 28 DAC (0.694 g g-1). The leaf area ratio continuously declined in the rainy season. In the transition and dry seasons, it adjusted to the third-degree polynomial model. The net assimilation rate presented averages of 3.73 ± 2.50 and 3.63 ± 1.48 g m-2 day-1 in the rainy and transition seasons, respectively. In the dry season, it was minimised at 48.4 days. The relative growth rate mean was 0.0075 ± 0.0037 during the rainy season. In the transition and dry seasons, it adjusted to the third-degree polynomial model. The growth index rates of elephant grass cv. Roxo are modified by growing seasons, and the pattern and magnitude of the response varies throughout the growth cycle.

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Características morfogênicas, estruturais e produtivas de acessos de capim-buffel

Cited by 6 publications

References 12 publications

Morphogenic, structural, and productive characteristics of Cenchrus ciliaris L. grown using different levels of caprine and ovine biofertilize

Morphogenic, structural, and productive characteristics of Cenchrus ciliaris L. grown using different levels of caprine and ovine biofertilize

Morphogenic and structural characteristics of tropical forage grasses managed under different regrowth periods in the Brazilian semi-arid region

Growth indexes of Pennisetum purpureum cv. Roxo cultivated in different seasons under rainfed conditions

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