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Resumen
Livestock intensification is increasing weed invasion in pastures. We performed an experiment near Buenos Aires, Argentina, to evaluate the impact of weeds on temperate cultivated pastures. We sowed 1,700 viable seeds m–2 in 24, 1.5‐m2 plots. Each plot had seven sowed lines, three of legumes (red clover, Trifolium pratense L.; 50% of seeds) alternating with four of grasses arranged in two sowing designs differing in the annual/perennial ratio: 70% prairie [ver mas...]
dc.contributor.authorLavarello Herbin, Agustina
dc.contributor.authorGolluscio, Rodolfo Angel
dc.contributor.authorRodríguez, Adriana Mabel
dc.date.accessioned2020-12-18T16:49:37Z
dc.date.available2020-12-18T16:49:37Z
dc.date.issued2020-12
dc.identifier.issn2639-6696
dc.identifier.otherhttps://doi.org/10.1002/agg2.20121
dc.identifier.urihttp://hdl.handle.net/20.500.12123/8458
dc.identifier.urihttps://acsess.onlinelibrary.wiley.com/doi/full/10.1002/agg2.20121
dc.description.abstractLivestock intensification is increasing weed invasion in pastures. We performed an experiment near Buenos Aires, Argentina, to evaluate the impact of weeds on temperate cultivated pastures. We sowed 1,700 viable seeds m–2 in 24, 1.5‐m2 plots. Each plot had seven sowed lines, three of legumes (red clover, Trifolium pratense L.; 50% of seeds) alternating with four of grasses arranged in two sowing designs differing in the annual/perennial ratio: 70% prairie grass (Bromus willdenowii Kunth, Bw, annual species) + 30% of orchardgrass (Dactylis glomerata L., Dg, perennial species) (>Bw), or 30% of Bw + 70% of Dg (>Dg). In the inter‐lines of each plot, we sowed the weed brown mustard (Brassica juncea L.) at four growing densities. At 123 d after sowing, we harvested aerial biomass of weeds and forage species (legume biomass was almost negligible at this date). We quantified aboveground net primary production (ANPP) of weeds and grasses (separated into blades, sheaths, and blades + sheaths), tiller density (indicating potential persistence), blade crude protein (CP), and neutral detergent fiber (NDF) concentrations of grasses.We made regressions to analyze the direct effect of weed biomass on each grass species, their indirect effects on the proportion of each species in the pasture, and their net effects on both species taken together. Weeds had negative direct and net effects. However, they did not have any indirect effect on species proportion. Pastures with lower annual/perennial ratio were more productive and potentially more persistent. Weeds also directly increased blade CP of the annual species.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherWileyes_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.sourceAgrosystems, Geosciences & Environment 3 (1) : e20121 (2020)es_AR
dc.subjectPastizaleses_AR
dc.subjectPastureseng
dc.subjectMalezases_AR
dc.subjectWeedseng
dc.subjectTrifoliumes_AR
dc.subjectBromuses_AR
dc.subjectDactylis glomerataes_AR
dc.subjectValor Nutritivoes_AR
dc.subjectNutritive Valueeng
dc.subjectPlantas Perenneses_AR
dc.subjectPerennialseng
dc.titleWeed effects on the establishment and nutritive value of pastures with different annual/perennial ratioes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.description.origenIPAF Región Pampeanaes_AR
dc.description.filFil: Lavarello Herbin, Agustina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Investigación y Desarrollo Tecnológico para la Agricultura Familiar Región Pampeana; Argentinaes_AR
dc.description.filFil: Golluscio, Rodolfo A. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentinaes_AR
dc.description.filFil: Rodríguez, Adriana Mabel. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentinaes_AR
dc.subtypecientifico


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