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Cantarutti, Reinaldo Bertola; Tarré, Ricardo Martinez; Macedo, Robert de Oliveira; Cadisch, G.; Rezende, C. P. de; Pereira, José Marques; Braga, J. P.; Gomide, José Alberto; Ferreira, Elvino; Alves, B. J. R.; Urquiaga, Segundo; Boddey, Robert M.

doi:10.1023/a:1021415915804

Cited by 46 publications

(18 citation statements)

References 29 publications

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“…Mixed pastures showed greater litter N for the SR of 2, 3, and 4 (10.2, 7.8, and 7.5 g kg -1 , respectively). Th us, litter N concentrations observed in the current research (10.4 g kg -1 ) were similar to those found by Cantarutti et al (2002) when mixing grass and legume at the lower SR (10.2 g kg -1 ). N concentration (g kg -1 organic matter) in signal grass pastures at three N fertilization rates during 2 yr (interaction P ≤ 0.05).…”

Section: Litter Nitrogen Concentrationsupporting

confidence: 89%

“…Possible explanations for variations include timing of fertilizer application, rainfall, and remaining litter from the previous season. Cantarutti et al (2002) compared pure creeping signal grass [Brachiaria humidicola (Rendle) Schweick] pastures to mixtures with Desmodium heterocarpon [(L.) DC subsp. ovalifolium (Prain) H. Ohashi] managed at three diff erent SR (2, 3, and 4 AU ha -1 ) and reported litter N concentrations of 6.1, 5.7, and 6.6 g kg -1 for SR of 2, 3, and 4 AU ha -1 , respectively, for creeping signal grass without the legume.…”

Section: Litter Nitrogen Concentrationmentioning

confidence: 99%

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Deposition and Decomposition of Signal Grass Pasture Litter under Varying Nitrogen Fertilizer and Stocking Rates

et al. 2013

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Increasing pressure on land used for animal production demands more effi cient production systems. Soil nutrients required for plant growth are usually the limiting factor in pasture productivity in the tropics. Th us, understanding nutrient cycling in grasslands is crucial to maintaining pasture sustainability where litter deposition and decomposition are important components of the nutrient cycle. Th is research evaluated the eff ects of stocking rate [SR; 2.0, 3.9, and 5.8 animal units (AU) ha -1 ; 1 AU = 450 kg cattle live weight] and N fertilization (0, 150, and 300 kg N ha -1 yr -1 ) on litter mass and chemical composition in signal grass (Brachiaria decumbens Stapf.) pastures during two grazing seasons [2009 and 2010; 1709 and 2103 kg organic matter (OM) ha -1 , respectively]. In 2009, the highest SR treatments (3.9 and 5.8 AU ha -1 ) had less litter mass accumulation (2093 and 2205 kg OM ha -1 , respectively) than the lowest SR (2750 kg OM ha -1 ). Litter deposition rate was similar among SR treatments and between years, and averaged 26 kg OM ha -1 d -1 . Litter N concentration increased with increasing N fertilization only in the second year (8.6 vs. 11.7 g kg -1 at 0 and 300 kg N ha -1 , respectively). Nitrogen fertilization reduced litter C/N ratio for the range of SR tested, but the reduction was more pronounced for the lowest SR (53.1 vs. 29.1 for 0 and 300 kg N ha -1 , respectively). Nitrogen fertilization mitigated the negative eff ect of increasing SR on litter mass deposition and chemical composition by stimulating plant regrowth.

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Section: Litter Nitrogen Concentrationsupporting

confidence: 89%

Section: Litter Nitrogen Concentrationmentioning

confidence: 99%

Deposition and Decomposition of Signal Grass Pasture Litter under Varying Nitrogen Fertilizer and Stocking Rates

et al. 2013

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“…Effects on soil fertility parameters were also evaluated. This trial, conducted over 8 years, complements other studies at this site on changes in soil C stocks (Tarré et al 2001) and nutrient cycling already published (Rezende et al 1999;Cantarutti et al 2002) and constituted a test of the sustainability of the system under the different management regimes.…”

Section: Introductionmentioning

confidence: 88%

“…Similar care was taken for the animals that grazed from January to December 1995, which was the period when most evaluations for the nutrient cycling study were made (Rezende et al 1999;Cantarutti et al 2002).…”

Section: Grazing Managementmentioning

confidence: 99%

Productivity of Brachiaria humidicola pastures in the Atlantic forest region of Brazil as affected by stocking rate and the presence of a forage legume

Pereira

Tarré

Macedo³

et al. 2008

Nutr Cycl Agroecosyst

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Excessive intensification of dairy and beef cattle production systems in the industrialised countries has led to serious problems of pollution of water resources and the atmosphere. In order to develop an appropriate alternative, a few studies have been made by various research teams in Brazil, using low fertiliser inputs and modest animal stocking rates. The objective of this present study was to evaluate the effect of different stocking rates of beef cattle, and the introduction of a forage legume (Desmodium ovalifolium (Prain) Wall.), on the long-term sustainability of pastures of Brachiaria humidicola (Rendle) Schweick established in the Atlantic forest region of Brazil in the extreme south of the State of Bahia. Annual maintenance fertilisation was restricted to additions of 11 and 6 kg ha -1 of P and K, respectively (and no N). Live weight gain (LWG) of Zebu steers was evaluated for stocking rates of 2, 3 and 4 head ha -1 during six grazing periods from 1988 to 1997. Forage intake and the proportion of legume in the acquired ration was determined using steers fitted with oesophageal fistulae. The bolus samples were analysed manually in 1988-1989, and using the 13 C natural abundance technique in 1995. There was no significant response of LWG to the presence of the legume in the acquired ration. LWG in the final grazing period (1995)(1996) was similar to that recorded in 1988-1989 at all stocking rates, suggesting that this management regime resulted in long-term sustainable production even in the absence of the legume or of a N fertiliser input. This was confirmed by the soil fertility analyses for 1988 and 1997, where only levels of P showed a significant decrease. The net aerial primary productivity (NAPP) of the pasture was determined for 1995, the largest component being deposited litter (21-33 Mg DM ha -1 year -1 ), followed by forage intake (6.4-12.2 Mg DM ha -1 year -1 ).

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“…With the use of consortium, the availability of this nutrient for the plants is improved consequently promotes an increase in the nutritional value from the pasture which will be ingested by the animals (Carvalho & Pires, 2008). This contribution is possible linked to the ability of the legumes to fix nitrogen, improving the availability of this nutrient for the plants grown in a consortium and extending the productive capacity of the soil (Cantarutti et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Production and Bromatological Composition of Black Oat Cultivated with Vetch When Submitted to Nitrogen Fertilization in Above Sowing in the Pasture of Tifton 85

Carvalho¹,

Porfirio²,

Führ³

et al. 2018

JAS

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The objective of this research was to evaluate the forage production, the bromatological composition of black oat in consortium with vetch when submitted to nitrogen fertilization in above sowing system in the Tifton 85 pasture. The experiment was conducted at the experimental farm of the Pontifical Catholic University of Parana, Campus Toledo-PR. The experimental design used was random blocks with four treatments and five repetitions and the treatments consisted of: only oat, oat consorted with vetch, oat with nitrogen fertilization and oat consorted with vetch and nitrogen fertilization. Were evaluated the bromatological composition (CP, NDF, ADF, LIG, EE DM, MM) and the forage yield in the consortium of oat with vetch and/or nitrogen fertilization. The results obtained to the bromatological composition indicate that the application of nitrogen on the surface of the forage increased production with an average of 3.922 kg ha -1 in the second year. The nitrogen fertilization also influenced in the medium contents of crude protein (CP) with 18.56% in the first year. The increase of nitrogen in the parcels showed meaningful results for the first year (P < 0.05) in the contents of dry matter with average value of 18.95%. The introduction of black oat consorted with vetch and with a nitrogen fertilization in above sowing in the crop of tifton 85 during the winter period provides an increase in the yield kg ha -1 and when the vetch was used it happened an increase in the contents of crude protein and dry matter in the bromatological composition of the forage.

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Cited by 46 publications

References 29 publications

Deposition and Decomposition of Signal Grass Pasture Litter under Varying Nitrogen Fertilizer and Stocking Rates

Deposition and Decomposition of Signal Grass Pasture Litter under Varying Nitrogen Fertilizer and Stocking Rates

Productivity of Brachiaria humidicola pastures in the Atlantic forest region of Brazil as affected by stocking rate and the presence of a forage legume

Production and Bromatological Composition of Black Oat Cultivated with Vetch When Submitted to Nitrogen Fertilization in Above Sowing in the Pasture of Tifton 85

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