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- Title
HERBICIDES IMPACT ON WEED CONTROL AND INJURY OF MAIZE AND CLIMBING BEAN GROWN IN AN INTERCROPPING SYSTEM.
- Authors
Pacanoski, Zvonko; Svečnjak, Zlatko; Saliji, Alirami
- Abstract
In an attempt to alleviate a labour problem for weeding in maize-bean intercropping, impact of several preemergence herbicides on weed control, injury and yield were evaluated at different rates in Tetovo locality, Republic of Macedonia, in 2012 and 2013. The most dominant weeds were Amaranthus retroflexus, Chenopodium album, Echinochloa crusgalli and Solarium nigrum. Linuron, pendimethalin, dimethenamid + terbuthylazine, isoxaflutole, pendimethalin + isoxaflutole and pendimethalin + linuron have been identified as promising herbicides to control weeds in maize-bean intercrop. Two-years testing of these herbicides showed that dimethenamid + terbuthylazine applied at higher rate (3.0 L/ha), and pendimethalin + isoxaflutole provided nearly 100% control of prevalent weeds. Lower rate of dimethenamid + terbuthylazine (2.5 L/ha) and pendimethalin + linuron, provided control levels of predominant weeds bigger than 92% and 84% in both experimental years. Isoxaflutole reduced the amount of predominant weeds in maize-bean intercrop, except Echinochloa crus-galli, by 100% in 2012 and 96-99% in 2013. Linuron does not provide effective control of Echinochloa crus-galli, but consistently controlled predominant Chenopodium album, Amaranthus retroflexus and Solatium nigrum greather than 94%, while pendimethalin provided control level bigger than 88% for predominant Amaranthus retroflexus, Chenopodium album and Echinochloa crus-galli and 52-46% for Solarium nigrum. No visual maize injures were determined by any herbicide rates in the both year. Dimethenamid + terbuthylazine treatments caused minimal bean injury (10% or less), but isoxaflutole alone and in combination with pendimethalin caused serious bean injuries (19-40%) evaluated 14 and 28 DAT. In both years, no significant differences were recorded between maize yield in all studied herbicides (except linuron in 2013) and weed-free control. Only isoxaflutole alone and when it was applied with pendimethalin significantly decreased bean yield compared to the weed-free control.
- Subjects
PHYSIOLOGICAL effects of herbicides; WEED control; CORN farming
- Publication
Herbologia, 2015, Vol 15, Issue 2, p55
- ISSN
1840-0809
- Publication type
Article
- DOI
10.5644/Herb.15.2.05