Seed production of 'Mombasa' grass subjected to different closing cut dates and nitrogen rates

Canto, Marcos Weber do; Almeida, Gisele Luziane de; Costa, Antônio Carlos Saraiva da; Neto, Armindo Barth; Júnior, J. R. S. Torres; Orlandini, Carla Faria

doi:10.1590/s0100-204x2016000600009

Cited by 9 publications

(9 citation statements)

References 19 publications

(17 reference 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%

“…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.…”

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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.…”

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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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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%

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

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“…Therefore, it was hypothesized that the use of hoof and horn flour (HHF) and blood flour (BF) residues from the cattle slaughtering industry could provide a similar effect of a nitrogen fertilizer when applied to pasture. In Brazilian soils, nitrogen fertilization is necessary, which increases production costs (Canto et al, 2016), has a shortterm effect (Hungary et al, 2016) and its majority comes from fossil fuels (Morais et al, 2012). The use of the HHF and BF residues generated by the cattle production industry could reduce the use of commercial fertilizer and provide an appropriate destination for these wastes.…”

Section: Introductionmentioning

confidence: 99%

Application of slaughterhouse residues as nitrogen source replacing commercial fertilizers on mombasa grass (Megathyrsus maximus)

Silva¹,

Leite²,

Carneiro³

et al. 2019

Aust J Crop Sci

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We hypothesized that the use of the residues of hull and horn flour and blood flour from the cattle slaughtering industry could provide a similar effect of nitrogen fertilizers when applied in pastures. For this reason, the objective was to evaluate the agronomic performance of mombasa grass fertilized with alternative nitrogen sources. A randomized block design in a 3 x 4 + 1 factorial scheme was used with four replications. Three sources of nitrogen were studied (hoof and horn flour, blood flour and urea) and four nitrogen doses (100, 200, 300 and 400 kg ha -1 N), plus a control with no nitrogen application. The experimental units consisted of plastic pots with a capacity of 5.0 dm 3 , and 4.0 dm 3 of soil was used. The application of the alternative sources -hull and horn flour and blood flour -promoted an increase in attributes such as leaf area, number of tillers, crude protein and forage mass. The organic sources have the potential to be applied as nitrogen sources in soils under pasture, which would promote an eco-friendly destination for these residues.Keywords: Alternative sources, blood flour from cattle, hoof and horn flour, meatpackers, tropical forage. Abbreviations: AEN_agronomic efficiency of nitrogen, BF_blood flour, CC_chlorophyll content, CP_crude protein, FM_forage mass, HHF_hoof and horn flour, LA leaf area and NT number of tillers.

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Productivity increase, reduction of nitrogen fertiliser use and drought-stress mitigation by inoculation of Marandu grass (Urochloa brizantha) with Azospirillum brasilense

et al. 2019

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Among the forage species cultivated in South America, the genus Urochloa is the most used, and the cultivar Marandu of U. brizantha is the most widely planted in Brazil. The objective of this study was to evaluate forage performance in association with Azospirillum brasilense, combined with nitrogen (N) fertilisation. The study was conducted under field conditions in Araguaína, Tocantins, in the central region of Brazil, between March 2016 and March 2017. Four N fertiliser rates (0, 12.5, 25 and 50kg/ha of N per cutting cycle) were combined with two inoculation treatments (inoculated and non-inoculated), with evaluations carried out in three periods of the year (transition, dry and wet seasons). Marandu grass plants inoculated with A. brasilense had greater plant height, number of tillers and forage production than non-inoculated plants, regardless of the N rate. Inoculation with A. brasilense allowed a 20% reduction in N fertilisation. Our results indicate that inoculation with A. brasilense in Marandu grass, as well as increasing forage production, can help to mitigate the stresses caused by the dry season.

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Seed production of 'Mombasa' grass subjected to different closing cut dates and nitrogen rates

Cited by 9 publications

References 19 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

Application of slaughterhouse residues as nitrogen source replacing commercial fertilizers on mombasa grass (Megathyrsus maximus)

Productivity increase, reduction of nitrogen fertiliser use and drought-stress mitigation by inoculation of Marandu grass (Urochloa brizantha) with Azospirillum brasilense

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