Desempenho animal e características de pastos de capim-piatã submetidos a diferentes intensidades de pastejo

Nantes, Nayana Nazareth; Euclides, Valéria Pacheco Batista; Montagner, Denise Baptaglin; Lempp, Beatriz; Barbosa, Rodrigo Amorim; Gois, Phillippe Oliveira de

doi:10.1590/s0100-204x2013000100015

Cited by 45 publications

(38 citation statements)

References 18 publications

(12 reference statements)

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“…Os demais tratamentos não apresentaram diferença significativa de produtividade, com médias próximas a 3.700 kg ha -1 , o que corresponde a uma diferença de aproximadamente 300 kg ha -1 , em relação ao tratamento mais produtivo. Para U. brizantha 'BRS Piatã', que apresenta similaridade morfofisiológica com a U. ruziziensis, Nantes et al (2013) concluíram que, em pastejo contínuo, alturas de manutenção entre 15 e 45 cm são adequadas para maximizar o desempenho animal. Este resultado mostra que é conciliável o adequado manejo de pastagem de U. ruziziensis, que vise alta produtividade e qualidade forrageira -o que permite alta produtividade animal por área e por indivíduo -e a condução da pastagem com objetivo de preservação ou melhoria da qualidade do solo, alta produção de palha para o SPD e alta produtividade de soja cultivada em sucessão.…”

Section: Resultsunclassified

Desempenho da soja em consequência de manejo de pastagem, época de dessecação e adubação nitrogenada

Franchini

Balbinot

Debiasi

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de alturas de pastejo e épocas de dessecação de uma pastagem de Urochloa ruziziensis e da adubação nitrogenada sobre o desempenho da soja. Foram testadas três alturas (15, 35 e 50 cm) de pastejo contínuo da pastagem por bovinos, durante seis meses, além de um piquete sem pastejo, que constituíram quatro experimentos distintos. Em cada experimento, utilizou-se o delineamento de blocos ao acaso, em arranjo de parcelas subdivididas. Nas parcelas principais, foram alocadas quatro épocas de dessecação da pastagem (35, 28, 20 e 8 dias antes da semeadura da soja); e, nas subparcelas, foram realizados dois tratamentos (sem e com 30 kg ha -1 de N, aplicado a lanço na semeadura). O manejo da pastagem de U. ruziziensis a 35 cm de altura confere maior produtividade de grãos de soja cultivada em sucessão à pastagem. Os intervalos de 8 a 35 dias, entre a dessecação da pastagem de U. ruziziensis e a semeadura da soja, não alteram o desempenho agronômico da cultura. Após o manejo da pastagem de U. ruziziensis, a aplicação de 30 kg ha -1 de N à soja, em semeadura, proporciona maior altura de plantas e de inserção da primeira vagem, mas não altera a produtividade de grãos.Termos para indexação: Glycine max, Urochloa ruziziensis, intensidade de pastejo, sistema integração lavoura-pecuária, sistema plantio direto. Soybean performance as affected by pasture management, desiccation times and nitrogen fertilizationAbstract -The objective of this work was to evaluate the effect of grazing heights and desiccation times of a Urochloa ruziziensis pasture and mineral nitrogen fertilization on soybean performance. Three grazing heights (15, 35, and 50 cm) on a pasture, continuously grazed by beef cattle for six months, and a nongrazed paddock were tested and constituted four different experiments. For each experiment, a randomized complete block design was used, in split-plot arrangements. In the main plots, four pasture desiccation times (35, 28, 20, and 8 days before soybean sowing) were distributed; and, in the subplots, two treatments were carried out (without and with 30 kg ha -1 N, broadcasted at soybean sowing). Pasture management of U. ruziziensis at 35-cm height provides the highest soybean yield for soybean cultivated in succession to the pasture. Urochloa ruziziensis desiccation times from 8 to 35 days before soybean sowing does not influence the crop's agronomic performance. After U. ruziziensis pasture management, the application of 30 kg ha -1 N, at soybean sowing, provides higher soybean plant and first pod insertion heights, but does not change soybean yield.

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Section: Resultsunclassified

Desempenho da soja em consequência de manejo de pastagem, época de dessecação e adubação nitrogenada

Franchini

Balbinot

Debiasi

et al. 2015

Pesq. agropec. bras.

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“…In addition to the production and nutritional qualities, [18] reported that Piatã grass is indicated for use in crop-livestock integration system, due to the slower initial growth, compared with Marandu palisadegrass and Xaraes palisadegrass and high growth after harvest of annual crops. These characteristics make the cultivar BRS Piata palisadegrass an excellent alternative for reducing large areas characterized by monocultures of Marandu palisadegrass, currently existing in all states of the Midwest and Southeast regions [19]. In the second cut, when begins the dry period, the highest yield was of Brachiaria brizantha cv.…”

Section: Resultsmentioning

confidence: 99%

Yield and Chemical Composition of Brachiaria Forage Grasses in the Offseason after Corn Harvest

Maia¹,

Costa²,

Severiano³

et al. 2014

AJPS

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This study evaluated the dry matter production and chemical composition of Brachiaria forage grasses in the offseason after corn harvest in integrated crop-livestock system. The experiment was conducted at the Federal Institute of Goiás, Rio Verde Campus, using a randomized complete block experimental design, with four replications. The treatments consisted of the forages: Brachiaria brizantha cv. Marandu; Brachiaria brizantha cv. Xaraes; Brachiaria brizantha cv. Piata; Brachiaria brizantha cv. MG-4; Brachiaria decumbens and Brachiaria ruziziensis, intercropped in oversown corn for implantation of integrated crop-livestock system. The results showed that intercropping corn with Brachiaria grasses favors the production of high-quality forage in the offseason, and the cultivars of Brachiaria brizantha and Brachiaria decumbens showed higher dry matter production. And cultivars of Brachiaria brizantha (Marandu palisadegrass, Xaraes palisadegrass and Piata palisadegrass) are the most suitable for presenting food of better quality, compared with Brachiaria brizantha cv. MG-4, Brachiaria decumbens and Brachiaria ruziziensis.

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“…When the height of the canopy is reduced (i.e., lower forage supply) more light reaches the base of the plant, while in the highest canopies (i.e. higher forage supply), the opposite occurs because of lower light interception owing to the lengthening of the plants and greater amount of sheets covering the soil (NANTES et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Herbage allowance effects on the characteristics of Brachiaria brizantha cv. Marandu pastures and the production and economic viability of Nellore heifersicas das pastagens de Brachiaria brizantha cv. Marandu e na produção e viabilidade econômica de novilhas Nelore

Dias

Gomes

Ítavo

et al. 2016

SCA

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This study aimed to evaluate the effect of three herbage allowances (5, 10, and 15 kg dry matter [DM] 100 -1 of body weight [BW]) for Brachiaria brizantha cv. Marandu pastures in a continuous grazing system on the morphological and nutritional characteristics of forage, animal performance, and economic viability in Nellore heifers. The total experimental area was 60 ha, divided into 12 paddocks of 5 ha each, with 4 paddocks per treatment. The experimental animals were Nellore heifers (260 in total), with average BW of 301.16 ± 9.12 kg, receiving 0.4 % BW in multiple supplements. We evaluated the production, structural characteristics, and nutritional value of the forage, productive performance, carcass characteristics, and economic viability of each allowance. There were significant effects for the production, structural characteristics, and nutritional value of the forage treatment. The proportions of leaves were 42.40, 38.20, and 30.88 % and the leaf:stem ratios were 1.22, 1.03, and 0.83 for the 5, 10, and 15 kg DM 100 -1 BW herbage allowances, respectively. The average daily weight gain (mean 0.42, 0.75, and 0.63 kg daily -1 ) and stocking rate (3.35, 1.87, and 1.26 animal unit ha -1 ) had a significant effect for the 5, 10, and 15 kg DM 100 -1 BW forage allowance, respectively. The herbage allowances were evaluated as being economically viable with a profit margin of 10.37, 23.65, and 14.43 % for the 5, 10, and 15 kg DM 100 -1 BW allowances, respectively. The greatest pasture response was found in the 5 kg DM 100 -1 BW allowance and was related to better nutritional values and morphological characteristics of the pasture and greater stoking rate and weight gain per area. The herbage allowance of 10 kg DM 100 -1 BW be applied to obtain higher animal performance and better economic viability of heifers in B. brizantha cv. Marandu pastures in a continuous grazing method that are receiving protein-energy supplementation.

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Desempenho animal e características de pastos de capim-piatã submetidos a diferentes intensidades de pastejo

Cited by 45 publications

References 18 publications

Desempenho da soja em consequência de manejo de pastagem, época de dessecação e adubação nitrogenada

Desempenho da soja em consequência de manejo de pastagem, época de dessecação e adubação nitrogenada

Yield and Chemical Composition of Brachiaria Forage Grasses in the Offseason after Corn Harvest

Herbage allowance effects on the characteristics of Brachiaria brizantha cv. Marandu pastures and the production and economic viability of Nellore heifersicas das pastagens de Brachiaria brizantha cv. Marandu e na produção e viabilidade econômica de novilhas Nelore

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