Morphophysiology of buffel grass grown under different water supplies in the dry and dry-rainy seasons

Maranhão, Samuel Rocha; Pompeu, Roberto Cláudio Fernandes Franco; Souza, Henrique Antunes de; Araújo, Rogério César Pereira de; Fontinele, R. G.; Cândido, Magno José Duarte

doi:10.1590/1807-1929/agriambi.v23n8p566-571

Cited by 6 publications

(6 citation statements)

References 10 publications

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“…This fact was reasonably apparent at night, the period of the day where water loss was minimized through this pathway. For buffel grass (Cenchrus ciliares), a xerophyte grass driven by the C 4 metabolism, Maranhão et al (2019) observed a maximum transpiration rate of 4.84 mmol m² s -1 when irrigating at 113% of the evapotranspiration. Once the water blade thickness was reduced to 30%, the transpiration rate did not surpass 1.9 mmol m² s -1 .…”

Section: Resultsmentioning

confidence: 99%

CO2 capture and water use efficiency in Opuntia stricta (Haw.) at different seasons and evaluation times

Souza

Araújo

Felix

et al. 2022

Rev. Colomb. Cienc. Hortic

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The forage cactus Mexican Elephant Ear is widely incorporated into the animal productive chain of the northeast region of Brazil. However, there is a lack of studies on the physiological dynamics of this cactus. Therefore, this study was conducted at the Estação Experimental Prof. Ignácio Salcedo of the Instituto Nacional do Semiárido (INSA), in Campina Grande, State of Paraíba, Brazil. The aim of this study was to evaluate CO2 uptake and water-use efficiency levels in Opuntia stricta (Haw.) during different seasons and evaluation times. The treatments were distributed using a 24×2 factorial arrangement, which corresponded to the evaluation of gas exchange processes for 24 hours in the rainy (June) and dry (December) seasons. The evaluated parameters were stomatal conductance, transpiration and CO2 uptake rate, internal CO2 concentration, instantaneous water-use efficiency and intrinsic water-use efficiency. The results revealed that gas exchange in the forage cactus was more intense during the rainy season, with good stability, than the low exchange levels during the dry season. Regardless of the season, the CO2 uptake peaked between 24:00 and 02:00. In addition, this range of time is the most suitable to conduct analyses under field conditions.

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Section: Resultsmentioning

confidence: 99%

CO2 capture and water use efficiency in Opuntia stricta (Haw.) at different seasons and evaluation times

Souza

Araújo

Felix

et al. 2022

Rev. Colomb. Cienc. Hortic

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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%

“…Drought interferes in water relations, physiology and morphology of forage plants to the point of causing water stress, which, depending on its magnitude, can severely limit forage production and even the survival of the species. Thus, seasonality in rainfall distribution, associated with poor management of water resources and the choice of unadopted forage genotypes, are the main causes of failure and low productivity of cultivated pastures (Maranhão et al, 2019;Dantas, Faria, Santos, Dalri, & Palaretti, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Ten days after seedling emergence, thinning was performed for the permanence of three tillers and 15 mg dm³ of nitrogen (0.25 g of urea) per pot was applied. In this phase were evaluated, the irrigation depth used (100% of the reference evapotranspiration -ETo) was obtained by collecting the daily evaporation of the Class 'A' Tank for subsequent estimation of ETo, according to the methodology described by Maranhão et al (2019).…”

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confidence: 99%

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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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“…Among the forage plants used in dry regions, Buffel grass stands out because it has a series of characteristics that provide greater resistance and rapid recovery after prolonged drought (Maranhão et al 2019). Many authors state that this grass is drought tolerant, however, few studies indicate this resistance to salinity.…”

Section: Introductionmentioning

confidence: 99%

Growth and leaf area analysis of buffel grass subjected to salt stress

Marciano

Lima

Batista

et al. 2022

RSD

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Buffel grass has characteristics of resistance and rapid recovery to prolonged drought, however, few studies indicate this resistance to salinity. Thus, the objective was to evaluate the relationship between salt stress and the growth dynamics, green mass production and area of Buffel grass. The experiment was conducted in an entirely randomized design, with three levels of salinity and ten repetitions, totaling 30 experimental units. Measurements of height, cutting and weighing of green mass were made in three periods, with intervals of 28 days between them, and photography of the leaves for analysis in ImageJ software in the last period. The data obtained were submitted to the Shapiro-Wilk normality test and Bartlett's homogeneity test. Kruskal-Wallis non-parametric test and Dunn's post-test was applied for data that did not follow normality, and ANOVA test and Tukey's post-test for those that followed normality and homogeneity. The results indicate that there was no significant difference in height for the treatments with or without salt, so even with the addition of salt there was no interference in growth, but when compared in relation to the periods, it can be observed that the last period was different from the others, this can be explained by the vegetative vigor of the plant, because when it is younger it has more efficient cell multiplication, but as it suffers injuries, the vigor is decreased and growth is slower. Therefore, there are some differences in the behavior of grass submitted to salinity, but they do not significantly interfere in its development.

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Morphophysiology of buffel grass grown under different water supplies in the dry and dry-rainy seasons

Cited by 6 publications

References 10 publications

CO2 capture and water use efficiency in Opuntia stricta (Haw.) at different seasons and evaluation times

CO2 capture and water use efficiency in Opuntia stricta (Haw.) at different seasons and evaluation times

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

Growth and leaf area analysis of buffel grass subjected to salt stress

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