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Effect of Amended Organic Media and Different Concentrations of Seaweed Extract on the Growth and Flowering of Periwinkle (Vinca rosea) Plant



Author(s)

Yousif Ali Abdulrahman and Janan Abdul-Khaliq Sadeeq

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DOI:10.17265/1934-7391/2014.03.005

Horticulture Department, Faculty of Agriculture and Forestry, Duhok University, Duhok 273, Iraq

A pot research has been conducted in Horticultural Department Nursery, Faculty of Agricultural and Forestry, Duhok University, during the period of May 15, 2012-Sep. 1, 2012. The study involved in testing the effects of two amended organic media (loam + sheep manure and loam + peat moss (1:1)) and different concentrations of seaweed (sea force 2) extract including (0, 0.5, 1, 1.5 and 2 mL/L) on growth and flowering of Periwinkle (Vinca rosea) plant. The results showed that growing vinca plants in peat moss medium and spraying sea force 2 extract with low concentrations especially 0.5 mL/L resulted in positive significant difference in vegetative and flowering characteristics.

Amended organic media, sea weed extract, Vinca rosea plant.