Ecophysiological response of <i>Sorghum halepense</i> populations to reduced rates of nicosulfuron

The control and regrowth after nicosulfuron reduced rate treatment of Johnsongrass (<i>Sorghum halepense</i> L. Pers.) populations, from seven Argentinean locations, were evaluated in pot experiments to assess if differential performance could limit the design and implementation of integ...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Acciaresi, Horacio A., Chidichimo, Hugo Oscar
Formato: Articulo
Lenguaje:Inglés
Publicado: 2005
Materias:
Ciencias Agrarias
Sorghum halepense
Johnsongrass
weed control
weed regrowth
capim massambará
controle de planta daninha
capacidade de rebrota
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/35374
http://www.scielo.br/pdf/pab/v40n6/24831.pdf
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-35374
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Sorghum halepense
Johnsongrass
weed control
weed regrowth
capim massambará
controle de planta daninha
capacidade de rebrota
spellingShingle Ciencias Agrarias
Sorghum halepense
Johnsongrass
weed control
weed regrowth
capim massambará
controle de planta daninha
capacidade de rebrota
Acciaresi, Horacio A.
Chidichimo, Hugo Oscar
Ecophysiological response of <i>Sorghum halepense</i> populations to reduced rates of nicosulfuron
topic_facet Ciencias Agrarias
Sorghum halepense
Johnsongrass
weed control
weed regrowth
capim massambará
controle de planta daninha
capacidade de rebrota
description The control and regrowth after nicosulfuron reduced rate treatment of Johnsongrass (<i>Sorghum halepense</i> L. Pers.) populations, from seven Argentinean locations, were evaluated in pot experiments to assess if differential performance could limit the design and implementation of integrated weed management programs. Populations from humid regions registered a higher sensibility to reduced rates of nicosulfuron than populations from subhumid regions. This effect was visualised in the values of regression coefficient of the non-linear models (relating fresh weight to nicosulfuron rate), and in the time needed to obtain a 50% reduction of photosynthesis rate and stomatal conductance. The least leaf CO<SUB>2</SUB> exchange of subhumid populations could result in a lower foliar absorption and translocation of nicosulfuron, thus producing less control and increasing their ability to sprout and produce new aerial biomass. The three populations from subhumid regions, with less sensibility to nicosulfuron rates, presented substantial difference in fresh weight, total rhizome length and number of rhizome nodes, when they were evaluated 20 week after treatment. In consequence, a substantial Johnsongrass re-infestation could occur, if rates below one-half of nicosulfuron labeled rate were used to control Johnsongrass in subhumid regions.
format Articulo
Articulo
author Acciaresi, Horacio A.
Chidichimo, Hugo Oscar
author_facet Acciaresi, Horacio A.
Chidichimo, Hugo Oscar
author_sort Acciaresi, Horacio A.
title Ecophysiological response of <i>Sorghum halepense</i> populations to reduced rates of nicosulfuron
title_short Ecophysiological response of <i>Sorghum halepense</i> populations to reduced rates of nicosulfuron
title_full Ecophysiological response of <i>Sorghum halepense</i> populations to reduced rates of nicosulfuron
title_fullStr Ecophysiological response of <i>Sorghum halepense</i> populations to reduced rates of nicosulfuron
title_full_unstemmed Ecophysiological response of <i>Sorghum halepense</i> populations to reduced rates of nicosulfuron
title_sort ecophysiological response of <i>sorghum halepense</i> populations to reduced rates of nicosulfuron
publishDate 2005
url http://sedici.unlp.edu.ar/handle/10915/35374
http://www.scielo.br/pdf/pab/v40n6/24831.pdf
work_keys_str_mv AT acciaresihoracioa ecophysiologicalresponseofisorghumhalepenseipopulationstoreducedratesofnicosulfuron
AT chidichimohugooscar ecophysiologicalresponseofisorghumhalepenseipopulationstoreducedratesofnicosulfuron
AT acciaresihoracioa respostaecofisiologicadepopulacoesdesorghumhalepenseadosesreduzidasdenicosulfuron
AT chidichimohugooscar respostaecofisiologicadepopulacoesdesorghumhalepenseadosesreduzidasdenicosulfuron
bdutipo_str Repositorios
_version_ 1764820471125114882

Ejemplares similares