Productivity and quality of  Brachiaria brizantha B4 seeds in function of nitrogen doses

Benteo, Gleiciane de Lima; Verzignassi, J. R.; Fernandes, C. D.; Valle, Cacilda Borges do; Macedo, M. C. M.; Libório, C. B.; Monteiro, Lenise Castilho

doi:10.1590/0103-8478cr20151536

Cited by 6 publications

(8 citation statements)

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“…The plant N uptake rates in the current study were related to increased N concentrations in the herbage of the creeping signalgrass that resulted from N fertilization and herbage production. This occurred because, in fields under forage seed production, the plants develop for a long period (until they complete their reproductive cycle) without grazing interference (Benteo et al, 2016; Canto et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…The lack of response of the herbage mass to the application of N may be related to the fact that, even in the absence of N (N0), the N concentration in the flag leaf was satisfactory (Table 2), indicating that soil N availability did not limit plant growth (Oliveira et al, 2005;Borghi et al, 2012). Benteo et al (2016), who studied palisadegrass 'B4' seeds, did not find a positive response of herbage mass to topdressed N growing season ´ N management interaction were considered fixed effects. To evaluate the growing season effect, only the F-test was used.…”

Section: Statistical Analysesmentioning

confidence: 99%

“…Some studies conducted in different soils and under different climate conditions have evaluated the effect of N rates on tropical grass seed production (Barth Neto et al, 2010; Canto et al, 2012, 2016; Benteo et al, 2016), including creeping signalgrass (Deminicis et al, 2010; Peres et al, 2010; Catuchi et al, 2013). Deminicis et al (2010) measured the highest yield of pure seeds at N rates between 171 and 200 kg N ha −1 , depending on the experiment.…”

mentioning

confidence: 99%

“…Moreover, N is one of the nutrients that accumulates in high amounts in the herbage of tropical perennial forage grasses (Vellinga et al, 2009) due to the intense vegetative growth of the plants prior to the flowering stage (Pires, 2006). Some studies conducted in different soils and under different climate conditions have evaluated the effect of N rates on tropical grass seed production (Barth Neto et al, 2010;Canto et al, 2012Canto et al, , 2016Benteo et al, 2016), including creeping signalgrass (Deminicis et al, 2010;Peres et al, 2010;Catuchi et al, 2013). Deminicis et al (2010) measured the highest yield of pure seeds at N rates between 171 and 200 kg N ha −1 , depending on the experiment.…”

mentioning

confidence: 99%

“…Catuchi et al (2013) obtained the highest yield of pure seeds of 'Llanero' creeping signalgrass with application rates between 127 and 154 kg N ha −1 . The responses of tropical forage grasses as a function of N fertilization management may vary among species and cultivars (Condé and Garcia, 1988;Neto et al, 2010;Canto et al, 2012Canto et al, , 2016Catuchi et al, 2013;Benteo et al, 2016). A high rate of N application (>100 kg ha −1 ) in the early stages of plant development may promote excessive vegetative growth to the detriment of reproductive development (Cecato et al, 2004;Magalhães et al, 2007;Peres et al, 2010;Viana et al, 2011), mainly due to the alteration of the source-sink relationship (Taiz and Zeiger, 2010;Basto, 2014).…”

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confidence: 99%

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Nitrogen Management, Nitrogen Use Efficiency, and Seed Yield and Quality of Creeping Signalgrass

et al. 2017

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Nitrogen (N) fertilization management can affect the seed yield and quality of tropical forage grasses. Studies have shown the effect of N rates on tropical grass seed production, but no study has evaluated the effect of application timing of N on the N use efficiency (NUE) and seed yield and quality of creeping signalgrass [Urochloa humidicola (Rendle) Morrone & Zuloaga, syn. Brachiaria humidicola (Rendle) Schweick.]. Field experiments were conducted over two growing seasons in Santo Anastácio, São Paulo, Brazil, to evaluate the influence of N fertilization timing on plant nutrition, herbage mass, N uptake, NUE, and seed yield and quality of creeping signalgrass ‘Llanero’. The treatments included a control (no N application) and four treatments with N applied at different times (150 kg N ha−1 during the vegetative phase, 150 kg N ha−1 at panicle initiation [prebooting], 100 kg N ha−1 during the vegetative phase plus 50 kg N ha−1 at panicle initiation, and 50 kg N ha−1 during the vegetative phase plus 100 kg N ha−1 at panicle initiation). Topdressed N fertilization increased the concentration of N in the flag leaf by 35.9% (from 12.2 to 16.6 g kg−1) and increased the herbage N uptake by 99.7% (from 72 and 144 kg ha−1). Herbage mass was not affected by topdressed N fertilization. The greatest seed yield (64.2% or 136 kg ha−1 greater than the control, and an average of 22.5% or 64 kg ha−1 greater than the other N treatments) was observed in response to 100 kg N ha−1 applied during the vegetative phase plus 50 kg N ha−1 applied at panicle initiation, which resulted in improved NUE. Seed viability was greater in the treatments where all or most of the N was applied at panicle initiation. In addition, the seed germination percentage was positively affected by N fertilization, regardless of the N application timing.

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Section: Resultsmentioning

confidence: 99%

Section: Statistical Analysesmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Nitrogen Management, Nitrogen Use Efficiency, and Seed Yield and Quality of Creeping Signalgrass

et al. 2017

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Effect of chemical sprays and management practices on Brachiaria ruziziensis seed production

Antony

Sridhar

Kumar

2017

Field Crops Research

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Ruminal degradation and fermentation kinetics of the Mulato II grass (Convert HD364) under different sources of nitrogen fertilization

Jacovetti,

França,

Basto

et al. 2023

Ciênc. anim. bras.

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It is important to evaluate nutritional value of new grass species, which can be better characterized through rumen fermentation and degradation techniques. The aim was to evaluate the effects of Nitrogen (N) fertilization on the kinetics of fermentation and ruminal degradation of the Mulato II grass. Two distinct sources of N (common and protected urea) were used during two periods of the year (summer - I and autumn - II). A completely randomized experimental design was used, in a 2x4 factorial arrangement with three replicates. Fraction A changed based on N dosage. The passage rate (K) and effective degradability (ED) were influenced by sources and doses of N, while Fraction B and Lag Time were not influenced during period I. Fractions A and B and EDs were all influenced by N sources and doses during period II. Lag time and potential degradability were influenced by N sources only. Among the kinetics parameters of dry matter ruminal fermentation obtained during period I, only K1 was influenced by the interaction between N doses x sources, while the remaining parameters were only influenced by the N doses applied. As for period II, with the exception of K2, all remaining parameters were influenced by the interaction of N doses and sources. Protected urea improved fermentation parameters during period I. The dose equivalent to applying 150kg/ha positively influenced ruminal fermentation parameters of the Mulato II grass mainly in the summer. The use of protected urea as a Nitrogen source improved fermentation parameters in the summer.

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Productivity and quality of Brachiaria brizantha B4 seeds in function of nitrogen doses

Abstract: This study aimed to evaluate aspects of reproductive phenology, yield components and seed quality of the B4 genotype of Brachiaria brizantha in function of nitrogen doses applied

Cited by 6 publications

References 4 publications

Nitrogen Management, Nitrogen Use Efficiency, and Seed Yield and Quality of Creeping Signalgrass

Nitrogen Management, Nitrogen Use Efficiency, and Seed Yield and Quality of Creeping Signalgrass

Effect of chemical sprays and management practices on Brachiaria ruziziensis seed production

Ruminal degradation and fermentation kinetics of the Mulato II grass (Convert HD364) under different sources of nitrogen fertilization

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