Herbage utilisation efficiency of continuously stocked marandu palisade grass subjected to nitrogen fertilisation

Pereira, Lilian Elgalise Techio; Paiva, Adenilson José; Guarda, V. D. A.; Pereira, Priscila de Mesquita; Caminha, Fábio Olegário; Silva, Sila Carneiro da

doi:10.1590/0103-9016-2014-0013

Cited by 21 publications

(18 citation statements)

References 18 publications

(29 reference statements)

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“…In this context, the pattern of response in TPD ( Figure 3) was typical of tropical regions, mainly as a consequence of rainfall seasonality (Figures 1 and 2). Similar TPD variations throughout the year for Marandu palisadegrass have been previously reported (Paula et al, 2012;Pereira et al, 2010;Sbrissia et al, 2010).…”

Section: Persistence and Productivitysupporting

confidence: 87%

Grazing intensity affects forage accumulation and persistence of Marandu palisadegrass in the Brazilian savannah

Euclides

Montagner

Macedo

et al. 2019

Grass and Forage Science

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This 3‐year study evaluated the effects of grazing intensity on herbage and steer responses in continuously stocked Brachiaria brizantha cv. Marandu pasture in the Brazilian savanna. Treatments consisted of three grazing intensity levels, characterized by canopy heights of 15, 30 and 45 cm, measured twice per week. Responses variables included tiller population density (TPD), herbage accumulation rate (HAR) and body weight gain per area (WGA). A decline in TPD (1,237 vs. 767 tillers/m2) was observed from the first to the third grazing years, which influenced the HAR from the first to the third years (90.1 vs. 52.4 kg ha−1 day−1). A marked decline in body WGA (541 vs. 276 kg ha−1 year−1) was observed along the three years in pastures managed at a height of 15 cm, indicating that this is an unstable condition for Marandu palisadegrass pasture. HAR was similar for pastures managed at 30 or 45 cm and was relatively stable during the experimental period, averaging 91.8 and 99.1 kg ha−1 day−1 respectively. Body WGA was similar and constant throughout the experimental period for pastures managed at 30 (596 kg ha−1 year−1) and 45 cm (566 kg ha−1 year−1). Maintaining continuously stocked Marandu palisadegrass pastures at a 15 cm canopy height should be avoided due to long‐term decreases in plant persistence and animal body WGA, particularly when soil P is below critical levels at pasture establishment and during pasture utilization.

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Section: Persistence and Productivitysupporting

confidence: 87%

Grazing intensity affects forage accumulation and persistence of Marandu palisadegrass in the Brazilian savannah

Euclides

Montagner

Macedo

et al. 2019

Grass and Forage Science

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“…These are plants with production of both leaves and stems as above-ground organs, a condition that would characterize them as an intermediary plant type. The existence of this intermediary morphogenetic type was initially indicated by Cruz & Boval [75] and recently discussed by Pereira et al [83] for Brachiaria brizantha cv. Marandu.…”

Section: Morphological Plant Types and Growthmentioning

confidence: 75%

Ecophysiology of C4 Forage Grasses—Understanding Plant Growth for Optimising Their Use and Management

2015

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Grazing management has been the focus of the research with forage plants in Brazil for many years. Only in the last two decades, however, significant changes and advances have occurred regarding the understanding of the key factors and processes that determine adequate use of tropical forage plants in pastures. The objective of this review is to provide an historical overview of the research with forage plants and grasslands in Brazil, highlighting advances, trends, and results, as well as to describe the current state of the art and identify future perspectives and challenges. The information is presented in a systematic manner, favoring an integrated view of the different trends and research philosophies. A critical appraisal is given of the need for revision and change of paradigms as a means of improving and consolidating the knowledge on animal production from pastures. Such analysis idealizes efficient, sound and sustainable grazing management practices necessary to realize the existing potential for animal production in the tropics.

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“…Nitrogen fertilization increased LAI, leaf proportion, and leaf bulk density of Mulato II (Table 5). In a Marandu palisadegrass pasture maintained at 30 cm under continuous stocking and fertilized with 0, 150, 300, and 450 kg N ha -1 yr -1 , the LAI was increased by 100% when N rate increased from 0 to 450 kg ha -1 yr -1 (Pereira et al, 2014). Greater proportion of leaves in the HM, especially newly at 10 cm, a treatment for which HA was reduced by 36% compared with the 40-cm height.…”

Section: Resultsmentioning

confidence: 96%

Canopy Height and Nitrogen Affect Herbage Accumulation, Nutritive Value, and Grazing Efficiency of ‘Mulato II’ Brachiariagrass

et al. 2016

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Brachiaria sp. grasses are widely used in planted pastures in Brazil. ‘Mulato II’ is a productive Brachiaria hybrid (B. ruziziensis × B. decumbens × B. brizantha) with high nutritive value, but it has not been evaluated under continuous stocking in Brazil, despite this method being widely used by producers. The objectives of this research were to quantify the effects of three canopy heights (10, 25, and 40 cm), maintained by mimicking continuous stocking, and two N rates (50 and 250 kg ha–1 yr–1) on herbage accumulation (HA), grazing efficiency (GE), and nutritive value of Mulato II during two summer rainy seasons in Piracicaba, Brazil. The N rates were chosen so that canopy height effects could be evaluated under distinctly different grass growth rates. Grass HA increased linearly (8640 to 13,400 kg DM ha–1 yr–1), in vitro digestible organic matter (IVDOM) decreased linearly (652 to 586 g kg–1), and GE decreased (linear and quadratic; 65 to 44%) as canopy height increased. There were no height × N rate interactions for these responses. Mulato II was less productive (7940 vs. 13 380 kg ha–1 yr–1) and had lesser IVDOM (581 vs. 652 g kg–1) at the lower N rate. Thus, although GE and IVDOM were greatest for 10 cm, HA was 36% less for the 10‐ than the 40‐cm height, and despite greatest HA occurring at 40 cm, both GE and IVDOM were greater at shorter heights. These data suggest that ∼25‐cm canopy height is optimal for continuously stocked Mulato II.

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Herbage utilisation efficiency of continuously stocked marandu palisade grass subjected to nitrogen fertilisation

Cited by 21 publications

References 18 publications

Grazing intensity affects forage accumulation and persistence of Marandu palisadegrass in the Brazilian savannah

Grazing intensity affects forage accumulation and persistence of Marandu palisadegrass in the Brazilian savannah

Ecophysiology of C4 Forage Grasses—Understanding Plant Growth for Optimising Their Use and Management

Canopy Height and Nitrogen Affect Herbage Accumulation, Nutritive Value, and Grazing Efficiency of ‘Mulato II’ Brachiariagrass

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