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

doi:10.1023/a:1010533721740

Cited by 61 publications

(12 citation statements)

References 21 publications

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“…This result for the grass-alone pastures is somewhat surprising considering that there was no legume in the sward and no N fertiliser added, but is in agreement with the results from the other sites in the humid tropics of coastal Queensland and at Carimagua (Lascano and Euclides 1996;Teitzel 1992). In the Itabela study soil N stocks were not depleted over the 8 year period (Tarré et al 2001) and it was estimated that soil C stocks to 100 cm increased by an annual mean of 0.66 Mg C ha -1 . Using 15 N enriched soil, B. humidicola and B. decumbens were found capable of obtaining significant inputs of N from plant-associated BNF, perhaps amounting to 30 to 40 kg N ha -1 year -1 (Boddey and Victoria 1986).…”

Section: Discussionmentioning

confidence: 94%

“…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: 85%

“…This N input may account for the observed sustainability of these grass-alone Brachiaria pastures, which can accumulate considerable soil carbon with time (Fisher et al 1994(Fisher et al , 2007Neill et al 1997). In the presence of D. ovalifolium, the large BNF input (Boddey et al 2005, in preparation) explains why these pastures maintain their productivity as well as increase soil C stocks at considerably higher rates then under the grass-alone swards (Fisher et al 1994(Fisher et al , 2007Tarré et al 2001).…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

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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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“…Los mayores aportes a los flujos de las emisiones totales de N 2 O fueron debidos a fertilizantes nitrogenados, que aumentaron conforme se incrementaron las dosis de N (figura 2). Según Tarre et al (2001) ambos estudios, en los SSP no se reportaron flujos de emisiones de N 2 O por el uso de fertilizantes nitrogenados. Los SSP minimizan el uso de fertilizantes en las pasturas (Smith et al, 2008).…”

Section: Discussionunclassified

“…Tarre et al (2001) mencionan que los SSP tienen la propiedad de neutralizar los flujos de las emisiones de GEI a la atmósfera.…”

Section: Discussionunclassified

Impacto de Alnus acuminata Kunth en los flujos de N2O y calidad del pasto Pennisetum clandestinum Hochst. ex Chiov.

2017

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El Aliso Alnus acuminata Kunth es un forestal del trópico alto de Colombia que se asocia con pasto Pennisetum clandestinum Hochst. ex Chiov. como sistema silvopastoril (SSP) y fija N atmosférico. El SSP se comparó con 0, 50, 100, 150 y 200 kg.N.ha-1.año-1 a los 30, 45 y 60 días sobre la calidad del pasto, expresada en forraje verde (FV), materia seca (MS), porcentaje de proteína cruda (%PC) y N absorbido; también se evaluaron los flujos de emisiones de N2O a la atmósfera. El SSP superó a 0 y 50 kg.N.ha-1 en todas las variables, menos en los flujos de emisiones de N2O que fue mayor a 0 kg.N.ha-1 (P<0.05) e igual a 50 kg.N.ha-1 (P>0.05) y en FV fue similar a 100 kg.N.ha-1 (p>0.05); 150 y 200 kg.N.ha-1.año-1 superó en todas las variables al SSP. Se alcanzó mayor FV y MS a los 45 días y %PC a los 30 días.

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Exploiting Mycorrhizae and Rhizobium Symbioses to Recover Seriously Degraded Soils

Faria¹,

Resende²,

Júnior³

et al. 2011

Ecological Aspects of Nitrogen Metabolism in Plants

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Cited by 61 publications

References 21 publications

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

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

Impacto de Alnus acuminata Kunth en los flujos de N2O y calidad del pasto Pennisetum clandestinum Hochst. ex Chiov.

Exploiting Mycorrhizae and Rhizobium Symbioses to Recover Seriously Degraded Soils

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