Palisadegrass pastures with or without nitrogen or mixed with forage peanut grazed to a similar target canopy height. 1. Effects on herbage mass, canopy structure and forage nutritive value

Nitrogen (N) inputs to pasture systems coupled with grazing management strategies based on monitoring and control of canopy structure may provide conditions for greater productivity and enhanced forage nutritive value. This 2‐year study assessed canopy structure and nutritive value responses of thre...

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Bibliographic Details
Published in:Grass and forage science 2021-09, Vol.76 (3), p.400-412
Main Authors: Homem, Bruno G. C., Lima, Italo B. G., Spasiani, Paola P., Ferreira, Igor M., Boddey, Robert M., Bernardes, Thiago F., Dubeux, José C. B., Casagrande, Daniel R.
Format: Article
Language:English
Subjects:
Arachis pintoi
Brachiaria
Brachiaria brizantha
Canopies
Dry matter
fertilized pasture
Fertilizers
Forage
Grasses
Grazing
Legumes
mixed pasture
Monoculture
Nitrogen
Nutritive value
Pasture
Pasture management
Pastures
Peanuts
Plant growth
Urochloa brizantha
warm‐season legume
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Summary:Nitrogen (N) inputs to pasture systems coupled with grazing management strategies based on monitoring and control of canopy structure may provide conditions for greater productivity and enhanced forage nutritive value. This 2‐year study assessed canopy structure and nutritive value responses of three pasture treatments, namely, (1) mixed Marandu palisadegrass (Brachiaria brizantha [Hochst. ex A. Rich.] R.D. Webster [syn. Urochloa brizantha Stapf]) cv. Marandu and forage peanut (Arachis pintoi Krapov. & W.C. Greg.) cv. BRS Mandobi pastures without N fertilizer (GRASS + LEGUME); (2) monoculture Marandu palisadegrass pastures fertilized with 150 kg N/ha (GRASS + N); and (3) monoculture Marandu palisadegrass without N fertilizer (GRASS). Grazing management was similar across pasture treatments, using continuous stocking and a target canopy height of 20–25 cm. Herbage mass was greater in GRASS + N and GRASS + LEGUME pastures than in GRASS in summer and spring (p = .014). The leaf:stem ratio in the grass mass (p = .731) was similar between treatments. Grass crude protein (CP) and in vitro digestible dry matter (IVDDM) were greatest in the GRASS + N pasture (p 
ISSN:0142-5242
1365-2494
DOI:10.1111/gfs.12532