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

	Marigold (Calendula officinalis) yield as affected by lamb's-quarters (Chenopodium album) competition
International Journal of Plant Production
مقاله 3، دوره 7، شماره 4، آذر 2013، صفحه 659-664 اصل مقاله (218.45 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22069/ijpp.2013.1262
نویسنده
B. Mirshekari^*
Department of Agronomy and Plant Breeding, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
چکیده
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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