Características do pasto e eficiência agronômica de nitrogênio em capim-tanzânia sob pastejo contínuo, adubado com doses de nitrogênio

Canto, Marcos Weber do; Hoeschl, André Ricardo; Filho, A. B. dos Santos; Moraes, Aníbal de; Gasparino, Eliane

doi:10.1590/s0103-84782013000400019

Cited by 14 publications

(13 citation statements)

References 22 publications

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“…Although the intervals of leaves were shorter, they were not sufficient to control the height of the canopy that ranged from 0.95 to 1.05 m between grazing cycles. Similar responses were observed by Difante et al (2009) and Canto et al (2013). Thus, grass height may compromise forage quality, due to the higher lignin content observed in these grazing cycles, and may also affect dry matter intake, since, with a higher supply of forage, animals can better harvest the crop due to a broader grazing horizon (2013).…”

Section: Resultsmentioning

confidence: 78%

Pasture quality of Panicum maximum cv. Tanzania subjected to different rest periods for milk production

Neto¹,

Silva²,

Deminicis³

et al. 2018

Afr. J. Agric. Res.

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The objective of this study was to evaluate the effect of two defoliation intervals on the morphological characteristics of the experimental group. Chemical composition characteristics of a Tanzania grass pasture (Panicum maximum) and the performance of crossbred cows on intermittent grazing were examined. The digestibility of the dry matter, the digestibility of the organic matter fibrous, the voluntary dry matter intake and the voluntary intake of the organic matter fibrous were also determined. Milk production of cows was obtained in two daily milks. The levels of fat, protein, lactose, liquid energy and total milk solids were also quantified. The treatments consisted of evaluations of two pasture management strategies: 95% interception of photosynthetically active radiation and pasture managed with 30 days of defoliation interval. The study thus revealed that management causes differences in the chemical composition of Tanzania grass, but does not allow individual productive increases. Management based on IL 95% leads to higher milk production per unit area.

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Section: Resultsmentioning

confidence: 78%

Pasture quality of Panicum maximum cv. Tanzania subjected to different rest periods for milk production

Neto¹,

Silva²,

Deminicis³

et al. 2018

Afr. J. Agric. Res.

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“…The concentrations used did not exceed the limit of 100 kg N/ha, as based on a previous study (CANTO et al, 2013) N application at concentrations greater than 90 kg N/ha during the establishment period negatively affects the recovery of applied N.…”

Section: Resultsmentioning

confidence: 81%

“…Interestingly, this trend does not apply at N concentrations exceeding 100 kg/ha (SILVA et al, 2011), which may be related to greater N loss at this concentration, making the conversion of N in the fertilizer less efficient (CABEZAS, 2011;CANTO et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

“…However, previous studies have shown reduced AE values when the concentration of N in the fertilizer was higher than 100 kg/ha (SILVA et al, 2011;KUYUMJIAN, 2014). According to Canto et al (2013) the conversion of N into forage was reduced by 20.2, 40.5 and 60.7% for N concentrations of 200, 300 and 400 kg/ha, respectively, when compared to 100 kg/ha. The forage mass is crucial for the agronomic efficiency index, and the DM quantity affects the final AE outcome.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, N fertilization directly contributes to N accumulation in the plant, whereby the amount of nitrogen accumulated in the tissues increases with application of higher concentrations of N, demonstrating the contribution of N in the soil (CASTAGNARA et al, 2011).…”

Section: Introductionmentioning

confidence: 98%

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Nitrogen during the establishment period of Mombasa grass

Rodrigues

Santos

Junior

et al. 2017

SCA

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The aim of this study was to investigate the effect of nitrogen (N) concentration during the establishment period of Mombasa grass (Panicum maximum Jacq.). The experiment was conducted using four different N concentrations (0, 30, 60 and 90 kg N/ha) during the establishment period in order to evaluate the effect of nitrogen on the plant. These effects were assessed using different indexes, including the efficiency of nitrogen use and agricultural, physiological and nutritional efficiencies. We also determined the total dry matter and nitrogen accumulation in the plant. The recovery of applied N and the agronomic efficiency of Mombasa grass were found to be greater with increasing N concentrations, and all indexes tested were found to be affected by the concentration of applied N. Based on the indexes studied, 90 kg N/ha was found to be most suitable for Mombasa grass during the establishment period. Key words: Agronomic efficiency. Nitrogen fertilizer. Panicum maximum Jacq. Nitrogen recovery. ResumoO presente trabalho teve como objetivo estudar o efeito de doses de nitrogênio (N) em pasto de capimMombaça (Panicum maximum Jacq.) durante o período de estabelecimento. Foi realizado experimento com quatro doses de N (0, 30, 60, 90 kg.ha -1 ), durante o período de estabelecimento, para avaliação do efeito do nitrogênio na planta, através de índices de eficiência de utilização, eficiência agronômica, fisiológica e nutricional, avaliou-se ainda a matéria seca total e o acúmulo de nitrogênio na planta. Concluiu-se que a recuperação do N aplicado e a eficiência agronômica pelo capim Mombaça aumentou com o incremento das doses. Sendo que, para todos os índices ocorreu influência das doses aplicadas. A dose de 90 kg de N.ha -1 , com base nos índices estudados, é a mais indicada para o período de estabelecimento do capim-Mombaça. Palavras-chave: Eficiência agronômica. Adubo nitrogenado. (Panicum maximum Jacq.). Recuperação do N aplicado.

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Effects of increasing nitrogen levels in Mombasa grass on pasture characteristics, chemical composition, and beef cattle performance in the humid tropics of the Amazon

Silva

Miotto

Neiva

et al. 2020

Trop Anim Health Prod

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Características do pasto e eficiência agronômica de nitrogênio em capim-tanzânia sob pastejo contínuo, adubado com doses de nitrogênio

Abstract: RESUMO O experimento foi conduzido visando a avaliar os efeitos das doses de nitrogênio (N)100

Cited by 14 publications

References 22 publications

Pasture quality of Panicum maximum cv. Tanzania subjected to different rest periods for milk production

Pasture quality of Panicum maximum cv. Tanzania subjected to different rest periods for milk production

Nitrogen during the establishment period of Mombasa grass

Effects of increasing nitrogen levels in Mombasa grass on pasture characteristics, chemical composition, and beef cattle performance in the humid tropics of the Amazon

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