Produção De Bovinos De Corte Em Pastagem De Aveia Preta E Azevém Submetida À Adubação Nitrogenada

Lupatini, Gelci Carlos; Restle, João; Vaz, Ricardo Zambarda; Valente, Alexandre Vargas; Roso, Cledson; Vaz, Fabiano Nunes

doi:10.5216/cab.v14i2.21068

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…The intense ryegrass development from August influenced this increase of DFAR in N-Pasture treatment, since the ryegrass 'Barjumbo' showed high productive response to N fertilization. Lupatini et al (2013) also reported an increase in the DFAR during the grazing period of a mixed pasture of black oat and ryegrass fertilized with 150 and 300 kg of N ha -1 . According to the authors, it is possible keeping a high forage accumulation until the end of grazing period with pasture N fertilization and this management is important, mainly in the ICLS, since keeps a high animal weight gain and increases the amount of pasture stubble for no-till system maintenance.…”

Section: Daily Forage Accumulation Ratementioning

confidence: 83%

Does the residual effect of n-fertilization applied on corn phase maintain forage production of the following pasture phase in an integrated crop-livestock system?

et al. 2020

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Nutrient cycling represents an important nutrient source in the Integrated Crop-Livestock Systems (ICLS). In general, only the crop phase of the ICLS is fertilized, however little is known about this residual effect of nitrogen fertilization from summer crop to succeeding winter pasture. This research aimed to evaluate the forage growth dynamic and botanical composition of a mixed pasture of black oat (Avena strigosa Schreb) and ryegrass (Lolium multiflorum Lam.) affected by two canopy height managements (high and low) and nitrogen fertilization applied to either the summer crop (corn) or winter pasture phase of an ICLS. The experiment was established in 2012 in southern Brazil. Black oat and ryegrass were growing during winter season and corn (Zea mays L.) during summer season, being this paper related to the 2014 pasture period. Treatments were composed by two canopy heights (25 and 10 cm) and two N-Fertilization Times (N-Pasture or N-Corn) of 200 kg of N ha-1. Canopy height was regulated by beef steers grazing through continuous stocking with a variable stocking rate. Forage mass was lower in the 10 cm canopy height on average, however this forage mass was composed by greater proportion of ryegrass leaves and lower proportion of dead material in relation to the treatment with 25 cm canopy height. The N-fertilization applied directly on pasture phase (N-Pasture) increased forage mass, tiller population density, participation of ryegrass and ryegrass leaf proportion in the forage mass. Furthermore, when pasture was fertilized with N, the forage accumulation rate increased about 69%, highlighting that the corn N-fertilization did not present significant effect on forage productivity. The residual effect of corn N-fertilization was not enough to maintain high forage accumulation. Thus, the pasture N-fertilization is fundamental to keep high-productive crop-livestock system.

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Section: Daily Forage Accumulation Ratementioning

confidence: 83%

Does the residual effect of n-fertilization applied on corn phase maintain forage production of the following pasture phase in an integrated crop-livestock system?

et al. 2020

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“…is a winter grass, with good adaptability to soils with low fertility (Fontaneli et al, 2012). It is used as a cover crop (Wolschick et al, 2016) and as a forage crop singly or in association with other crops, showing good forage yield and higher weight gain for cattle production (Ferrazza et al, 2013;Lupatini et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Immediate and latent damages of drying temperature in the quality of black oat (Avena strigosa Schreb.) seeds

Scariot

Pasinato²,

Galon³

et al. 2020

Agron. Colomb.

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The objective of this research was to evaluate the immediate and latent drying temperature damages on the physical and physiological quality of black oat seeds. The seeds were dried in an oven with air circulation at temperatures of 30, 40 and 50ºC, in addition to the use of alternating temperatures (40-50ºC). After drying the seeds were stored under environmental conditions for 180 days, and physical and physiological analyses were performed every 45 days. It was observed that the physical quality of black oat seeds was reduced with an increase in the storage time, regardless of the drying temperature used. The physiological quality of black oat seeds increased throughout storage until dormancy was overcome, regardless of the drying temperature. Elevated drying temperatures cause immediate damages to the physical quality of black oat seeds, whereas physiological quality tends latently to suffer the negative influence of increasing the temperature of the drying air.

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Grazing height and nitrogen fertilization strategy in black oat/maize succession

Deifeld

Soares

Schmitt

et al. 2021

Semina: Ciênc. Agrár.

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This study was developed to examine the effect of combining nitrogen (N) fertilization strategies and pasture management heights on animal and grain production in an Integrated Crop-Livestock System. The experiment was carried out in the municipality of Abelardo Luz - SC, Brazil, between April 2017 and April 2018. A randomized-block design was adopted, with the treatments arranged in a 2×2 factorial arrangement with three replicates. The first factor was the height of the pasture managed under continuous grazing: high (HH, 20 cm) or low (LH, 12 cm). The second factor corresponded to the N application times: in the winter, in the pasture (NP), and in the summer, in the grain crop (NG), in a single N rate of 200 kg ha-1 as topdressing. The forage species used during the pasture phase was black oat (Avena strigosa Schreb), and the pasture was grazed by Nellore × Charolais crossbred steers with an initial body weight of 260 kg. The summer crop was maize (Zea mays). Average daily gain (ADG) and herbage allowance were higher in HH than in LH, whereas animal load was higher in HH. Between the N application times, the animal load was higher in NP. Pasture management height and N fertilization strategy did not affect the variables of number of rows per ear, number of grains per row, thousand-grain weight, or total grain yield, which overall averaged 14,090 kg ha-1. In conclusion, the inversion of nitrogen fertilization between the periods of winter pasture production and grain crop and the management height of the black oat pasture do not compromise the production of maize grains in the summer, or animal production per area. However, steer performance is greater (higher ADG) when the pasture is managed at 20 cm, whereas a high grazing intensity significantly reduces straw on the soil.

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Produção De Bovinos De Corte Em Pastagem De Aveia Preta E Azevém Submetida À Adubação Nitrogenada

Cited by 3 publications

References 14 publications

Does the residual effect of n-fertilization applied on corn phase maintain forage production of the following pasture phase in an integrated crop-livestock system?

Does the residual effect of n-fertilization applied on corn phase maintain forage production of the following pasture phase in an integrated crop-livestock system?

Immediate and latent damages of drying temperature in the quality of black oat (Avena strigosa Schreb.) seeds

Grazing height and nitrogen fertilization strategy in black oat/maize succession

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