Biomass components of Pennisetum purpureum cv. Roxo managed at different growth ages and seasons

Maranhão, Theyson Duarte; Cândido, Magno José Duarte; Lopes, Marcos Neves; Pompeu, Roberto Cláudio Fernandes Franco; Carneiro, Maria Socorro de Souza; Furtado, Rafael Nogueira; Silva, Rafael Rodrigues da; Alves, Francisco Gleyson da Silveira

doi:10.1590/s1519-99402018000100002

Cited by 7 publications

(4 citation statements)

References 20 publications

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“…The different climatological conditions in the rainy and dry seasons were decisive in the modification of this agronomic characteristic. The LAI value of CT-115 and Maralfalfa doubled in the rainy season with respect to the dry season (Table 1 and 2), which was also reported by Maranhão et al [32], upon evaluation of a species of the Cenchrus genus in eastern Brazil along three climatologically defined periods (rainy, transitional, and dry) and different cutting ages. In their research, they found that LAI was two times greater in the rainy season, in comparison with the dry season; additionally, according to their results and analysis, they determine that there is a positive correlation with age.…”

Section: Discussionsupporting

confidence: 79%

Agronomic Traits of Seven Accessions of Cenchrus purpureus under Rainfed Conditions in the Tropic Region of Veracruz, México

Arrieta-Gonzalez,

Silva-Martínez,

Barrientos-Morales

et al. 2024

Preprint

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The agronomic characteristics of Cenchrus purpureus were assessed through a randomized block experimental design with seven accessions (Taiwan grass, King grass, Elephant grass, Merkeron, CT-115, Purpule grass and Maralfalfa) as treatments and four replications research was carried out at the Instituto Tecnológico Superior de Tantoyuca, in 2019 and 2020, under rainfed conditions. Sowing density was established at 36 tillers in 25 m2. Green and dry matter yield, daily rates of dry matter accumulation in leaves, leaf/stem ratio, height, leaf area index and cutting frequency were assessed. Rainfall amount, temperature, relative humidity and global radiation levels were recorded to assess their effect on the evaluated variables. One-way ANOVA and multivariate analysis techniques, such as multiple linear regression (MLR), Clustering, and Principal component analysis (PCA) with the Statistica V7 software, were used. The leaf area index was greatest (p &lt; 0.05) on the dry season. Green and dry matter yield were greatest in Maralfalfa (p &lt; 0.05). Variation in the results is attributed to weather phenomena; nonetheless, Elephant grass and Maralfalfa showed the highest yields. Quality parameters must be evaluated to identify those grasses with the best attributes.

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Section: Discussionsupporting

confidence: 79%

Agronomic Traits of Seven Accessions of Cenchrus purpureus under Rainfed Conditions in the Tropic Region of Veracruz, México

Arrieta-Gonzalez,

Silva-Martínez,

Barrientos-Morales

et al. 2024

Preprint

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“…Roxo showing positive linear behavior, it was noticed that the accumulation of those nutrients was greatest between the ages 27 and 36 DAC in the rainy season and between the ages 36 and 45 DAC for the transition season. The response in the present study is justified by the maximum population density of tillers being observed at 31 and 39 DAC in the rainy and transition seasons, respectively, as observed by Maranhão et al (2018). As for the dry season, the accumulation of nutrients was enhanced between the ages of 18 and 27 DAC.…”

supporting

confidence: 71%

Accumulation and partition of macronutrients in Pennisetum purpureum cv. Roxo managed under different growth ages and seasons

Maranhão

Cândido

Soares

et al. 2018

Rev. bras. saúde prod. anim.

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SUMMARY The objective of this study was to evaluate the macronutrient accumulations in leaf, stem, and shoot of elephant grass cv. Roxo. The treatments consisted of seven growth ages (9, 18, 27, 36, 45, 54, and 63 days) and three growing seasons (rainy, transition, and dry). A completely randomized design and a split-plot time arrangement were used, where the ages were the plots and the seasons the subplots, with three replications. Interaction between the factors age and season of cultivation for the contents and the daily accumulation rates of N, P, K, Ca, Mg, and S in leaf, stem, and shoot fractions were calculated. The margins of daily accumulation of nutrients N, P, K, Mg, and S presented positive linear behavior in all seasons studied; however, with variation in the magnitude of the response between them. The daily accumulation rate of Ca in the canopy was adjusted to a linear model for the rainy and dry seasons and to a quadratic model for the transition season, reaching a maximum of 4.60 kg ha-1 at 59.76 days of growth. The accumulation of nutrients in elephant grass cv. Roxo showed the following decreasing order: K > N > P > Mg > Ca > S in the rainy and transition seasons, while in the dry season the following decreasing order was observed: K > P > N > Ca > Mg > S.

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“…In tropical regions, rain is the main factor that limits the growth and accumulation of forage mass, and it has been verified that the seasonality of rainfall influences the increase in biomass of Pennisetum purpureum cv. Roxo (16). The seasonality of Brachiaria brizantha cv.…”

Section: Introductionmentioning

confidence: 99%

Responses of Panicum and Brachiaria to irrigation during winter in the Goiás’ Cerrado-Brazil

Sousa¹,

Bittar

Buso

2022

Rev. FCA UNCUYO

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Forage production in the Cerrado is based on well-defined seasons: a rainy summer, and a dry winter. To define strategies that minimize the seasonality of forage production, responses in growth and biomass accumulation of five irrigated forages were evaluated during winter. The experimental design was randomized blocks, in a split plot arrangement, with five replicates, five forages in the plots (three of Panicum maximum - Mombasa, Tanzania, and Masai; two of Brachiaria brizantha - piatã and MG5), and five cuts in the subplots made from July to October 2016. Forages were cultivated with centre-pivot irrigation and the water level was defined according to the reference evapotranspiration determined through a Class A pan evaporation method, 0.8 kc, and two-day irrigation shifts. The number of shoots, leaves/tiller, leaves/plant, fresh leaf and stem biomass, dry leaf and stem biomass, fresh leaf mass/fresh stem mass ratio, dry leaf mass/dry stem mass ratio, and biomass accumulated in the five cuts were calculated. Irrigated forage during winter in the Goiás’ Cerrado showed satisfactory growth, reaching a lower plant height between cuts than those reported in the literature. Among the Panicum grasses, Mombasa grass stood out, and MG was superior to piatã grass. Highlights The forages Panicum maximum - Mombasa, Tanzania, and Masai -; and Brachiaria brizantha - piatã and MG5 -, presented satisfactory responses in growth and biomass accumulation in an irrigated culture during winter in the Goiás’ Cerrado. The Mombasa grass stood out among the forage of the genus Panicum and MG5 in the Brachiaria. The Mombasa and Brachiaria MG5 grasses are recommended for cultivation of irrigated forage during the winter in the Goiás’ Cerrado.

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Biomass components of Pennisetum purpureum cv. Roxo managed at different growth ages and seasons

Cited by 7 publications

References 20 publications

Agronomic Traits of Seven Accessions of Cenchrus purpureus under Rainfed Conditions in the Tropic Region of Veracruz, México

Agronomic Traits of Seven Accessions of Cenchrus purpureus under Rainfed Conditions in the Tropic Region of Veracruz, México

Accumulation and partition of macronutrients in Pennisetum purpureum cv. Roxo managed under different growth ages and seasons

Responses of Panicum and Brachiaria to irrigation during winter in the Goiás’ Cerrado-Brazil

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