Produtividade de capim Paiaguás sob doses de nitrogênio e cortes

Nascimento, Diego do; Vendruscolo, Marice Cristine; Dalbianco, Alessandro Bandeira; Daniel, Diego Fernando

doi:10.31533/pubvet.v13n5a321.1-15

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…(2019) reported higher forage yields with the application of 200 or 300 kg of N ha -1 at both evaluated defoliation intensities (8, 16 24 and 32 cm above ground). Similarly, Nascimento et al (2019) found a linear effect of nitrogen fertilization on the green biomass yield of B. brizantha cv. Paiaguás with the application of up to 250 kg of N ha -1 .…”

Section: Resultsmentioning

confidence: 79%

Response of Brachiaria brizantha cv. Piatã pastures to nitrogen fertilization

Costa¹,

Magalhães²,

Bendahan

et al. 2020

RSD

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With the objective to evaluate the effects of nitrogen levels (0, 40, 80, 120 and 160 kg of N ha-1) on green dry matter (GDM) yield and morphogenetic and structural characteristics and nitrogen nutrition index (NNI) of Brachiaria brizantha cv. Piatã, was installed an experiment under field conditions in Roraima´s savannas. Nitrogen fertilization increased significantly (P<0.05) GDM yields, number of tillers, number of leaves tiller-1, average leaf size, leaf area index, leaf senescence rate, leaf appearance and elongation rates. Maximum GDM yields, leaf elongation rates, leaf length and number of leaves tiller-1 were obtain with the application of 145.9; 118.2; 108.9 and 133.6 kg of N ha-1, respectively. Nitrogen nutrition index alone with 120 or 160 kg N application was higher than the grass N internal critical level. The NNI, efficiency of utilization and apparent N recovery were inversely proportional to the increased N levels.

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Section: Resultsmentioning

confidence: 79%

Response of Brachiaria brizantha cv. Piatã pastures to nitrogen fertilization

Costa¹,

Magalhães²,

Bendahan

et al. 2020

RSD

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“…However, the use of this fertilizer alone does not guarantee maximum forage production. Several studies have been carried out to access which dose of the nutrient provides maximum productive response of forages (Cabral et al, 2012;Costa et al, 2016;Germano et al, 2018;Teixeira et al, 2018;Nascimento et al, 2019;Sales et al, 2020;Wasselai et al, 2020). In addition, it is important to identify, during the rainy season, which is the most suitable time to carry out fertilization, as well as how many days after defoliation the fertilizer should be applied.…”

Section: Introductionmentioning

confidence: 99%

Interval between defoliation and fertilization of Panicum maximum cultivars

Motta¹,

Mota²,

Melo³

et al. 2021

Bol. Ind. Anim.

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Forage is a low-cost food for cattle production. To achieve maximum economic and productive efficiency, nitrogen dose must be adjusted as well as the ideal time to carry out the application. Thereby, this work aimed to identify the appropriate moment to realize nitrogen maintenance fertilization on cultivars of Panicum maximum (syn. Megathyrsus maximus): BRS Tamani e MG 12 Paredão. Two experiments were carried out in a greenhouse. The first experiment (Experiment 1) at Federal University of Mato Grosso, Cuiabá, and the second experiment (Experiment 2) at Federal University of Rondonópolis. Treatments consisted of five intervals between forage defoliation and nitrogen fertilization: 0, 2, 4, 6, and 8 days. Harvests were done when Tamani and MG 12 Paredão guinea grass reached 30 + 0.70 and 78 + 0.70 cm, respectively. The intervals between forage defoliation and nitrogen fertilization did not influence the development of MG 12 Paredão, except for tiller number. In contrast, the intervals between forage defoliation and nitrogen fertilization of BRS Tamani changed the leaf number, tiller number, dry mass of each leaf blade, dry mass of each tiller, leaf blade dry mass, stem dry mass and shoot dry mass. The longer the interval between defoliation and nitrogen fertilization on BRS Tamani, the greater the decrease in development, which impacted negatively on forage mass. There was no common biological response for both cultivars, even belonging to the same species, therefore, MG 12 Paredão has flexibility for fertilization timing, while BRS Tamani fertilization should be performed as close as possible to defoliation.

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“…The growth stage at which the plants was harvested directly affects the yield, chemical composition, regrowth capacity and persistence (Dim et al, 2015;Paiva et al, 2019). Cuts or less frequent grazing provide greater forage yields, however, concomitantly decreases occur accented in their chemical composition, with greater deposition of fibrous material, decrease in leaf/stem ratio (Costa et al, 2007;Pereira, 2013;Nascimento et al, 2019). Therefore, one must seek the balance between yield and forage quality, to ensure the nutritional requirements of animals while securing the persistence and productivity of pastures.…”

Section: Introductionmentioning

confidence: 99%

Forage yield, chemical composition and morphogenesis of Brachiaria brizantha cv. Piatã under regrowth periods

Costa¹,

Rodrigues

Magalhães

et al. 2020

RSD

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With the objective to evaluate the effects of regrowth period (14, 21, 28, 35 and 42 days) on green dry matter yield (GDMY), chemical composition and morphogenetic and structural characteristics of Brachiaria brizantha cv. Piatã, was carried out an experiment under greenhouse with natural conditions of light and temperature. GDMY yields and regrowth, leaf blade length, and leaf lifespan rate increased consistently (P<.05) with regrowth period, however the nitrogen, phosphorus, magnesium and potassium contents decreased as regrowth period, while calcium contents were not affected by regrowth period. Maximum GDMY, leaf appearance and elongation rate, and leaf blade length were obtained with regrowth periods at 38.2; 41.1; 31.3 and 38.9 days, respectively. These data suggest that cutting at 35 to 42 regrowth days were optimal for obtain maximum yields and regrowth of rich forage and pasture persistence.

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Produtividade de capim Paiaguás sob doses de nitrogênio e cortes

Cited by 6 publications

References 24 publications

Response of Brachiaria brizantha cv. Piatã pastures to nitrogen fertilization

Response of Brachiaria brizantha cv. Piatã pastures to nitrogen fertilization

Interval between defoliation and fertilization of Panicum maximum cultivars

Forage yield, chemical composition and morphogenesis of Brachiaria brizantha cv. Piatã under regrowth periods

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