Marigold (Calendula officinalis) yield as affected by lamb's-quarters (Chenopodium album) competition


  • B. Mirshekari Department of Agronomy and Plant Breeding, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
چکیده مقاله:

To study interferential effect of lamb's-quarters (Chenopodium album L.) on marigold (Calendula officinalis) yield and lamb's-quarters seed production two factorial field experiments were conducted in Tabriz, Iran, during 2010-2011. Treatments were densities of lamb's-quarters (0, 2, 4, 6 and 8 plants per meter row) and relative times of its emergence (0, 10, 20, 30 and 40 days after marigold emergence). Marigold could tolerate4 lamb's-quarters plants per meter row without any significant yield reduction, when it emerges 40 days after that of marigold. A suitable fit to model of Cousens et al. was obtained for all marigold flower yield data sets at interference with lamb's-quarters. Results also indicate that controlling lamb's-quarters early in the season may reduce its seed production capacity.

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عنوان ژورنال

دوره 7  شماره 4

صفحات  659- 664

تاریخ انتشار 2013-09-01

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