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Título

Uptake and translocation of imazethapyr in peas as affected by parasitism of Orobanche crenata and herbicide application methods

AutorJurado-Expósito, Montserrat ; Castejón-Muñoz, Mercedes; García Torres, Luis
Palabras claveUptake
Translocation
Seed treatment
Imazethapyr
Parasitic weeds
Fecha de publicaciónabr-1999
EditorWiley-Blackwell
CitaciónWeed Research, 39: 129-136 , 1999
Resumen[14C]-Imazethapyr was applied as a seed treatment and at plant pre-emergence and post-emergence to peas (Pisum sativum L.) parasitized by Orobanche crenata Forsk. Herbicide uptake increased with time regardless of the application method. Uptake reached about 98%, 89%, 81% and 94% of the total herbicide applied for the seed coating, seed soaking, pre-emergence and post-emergence treatments respectively. Herbicide translocation within the host plants consistently differed between O. crenata-infected and non-infected plants. High levels of 14C activity were accumulated by parasitic plants from the host. In non-infected pea plants, pods were stronger sinks for imazethapyr than the other parts of the plant, regardless of the application method. The herbicide distribution in the pea plant: O. crenata complex showed the same pattern regardless of the application methods. However, accumulation of radioactivity in the parasite was lower with pre-emergence and post-emergence application than with the seed treatments. In addition, radioactivity concentration in O. crenata plants was slightly higher when [14C]-imazethapyr was applied to pea seeds by coating than by soaking.
Descripción8 pages, 2 tables, 2 figures
Versión del editorhttp://dx.doi.org/10.1046/j.1365-3180.1999.00130.x
URIhttp://hdl.handle.net/10261/25140
DOI10.1046/j.1365-3180.1999.00130.x
ISSN0043-1737
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