Light interception, yield, spring regrowth and quality of Chloris gayana under different defoliation regimes

To study the effect of different defoliation regimes on light interception, forage yield, spring regrowth and quality of one of the most expanded species in this region, Chloris gayana, we evaluate combinations of two defoliation frequencies (300 and 500 GDD) and two intensities (1 and 3 green stubb...

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Detalles Bibliográficos
Autor principal: Ruolo, María Soledad
Otros Autores: Pérez, Héctor Eduardo, Rodríguez, Adriana Mabel
Formato: Artículo
Lenguaje:Inglés
Materias:
RHODES GRASS
DEFOLIATION MANAGEMENT
PRODUCTIVITY
DIGESTIBILITY
CRUDE PROTEIN
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2022ruolo.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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024 |a 10.1080/00288233.2022.2038212 
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100 1 |9 35217  |a Ruolo, María Soledad  |u Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales. Unidad de Estudios Agropecuarios. Córdoba, Argentina.  |u CONICET - Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales. Unidad de Estudios Agropecuarios. Córdoba, Argentina.  |u Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Producción Animal. Cátedra de Forrajes y manejo de pasturas. Córdoba, Argentina. 
245 1 0 |a Light interception, yield, spring regrowth and quality of Chloris gayana under different defoliation regimes 
520 |a To study the effect of different defoliation regimes on light interception, forage yield, spring regrowth and quality of one of the most expanded species in this region, Chloris gayana, we evaluate combinations of two defoliation frequencies (300 and 500 GDD) and two intensities (1 and 3 green stubble leaves) in a controlled experiment that comprised 1500 GDD during summer and autumn. Defoliation frequency had a greater effect on the evaluated traits than defoliation intensity. Forage yield was lower under the higher (300 GDD) than under the lower (500 GDD) frequency defoliation (6699 vs. 8961 kg DM/ha, respectively), but forage showed higher leaf percentage (69.8 vs. 53.2%) and better nutritional value at 300 GDD (17.4 vs. 15.6%, 64.1 vs. 62.1%, 60.9 vs. 63.2% and 67.7 vs. 62.4% of crude protein, dry matter digestibility, neutral detergent fiber and its digestibility, respectively) than at 500 GDD. Spring tiller density was not affected by any of the defoliation regimes. Better livestock performance could be obtained by grazing at 300 GDD, but considering the whole growing season, more digestible dry matter is likely to be produced under defoliations every 500 GDD than every 300 GDD. 
650 |2 Agrovoc  |9 26 
653 |a RHODES GRASS 
653 |a DEFOLIATION MANAGEMENT 
653 |a PRODUCTIVITY 
653 |a DIGESTIBILITY 
653 |a CRUDE PROTEIN 
700 1 |a Pérez, Héctor Eduardo  |u Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi (EEA Manfredi). Manfredi, Córdoba, Argentina.  |9 66578 
700 1 |9 13556  |a Rodríguez, Adriana Mabel  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Cátedra de Forrajicultura. Buenos Aires, Argentina. 
773 0 |t New Zealand Journal of Agricultural Research  |g Vol.65, no.6 (2022) p.573-585, grafs., tbls. 
856 |f 2022ruolo  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2022ruolo.pdf  |x ARTI202505 
856 |u https://taylorandfrancis.com/  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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