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¹ Akdeniz Üniversitesi, Ziraat Fakültesi, Toprak Bilimi ve Bitki Besleme Bölümü, Antalya Viewed : 1566 - Downloaded : 943 This study, which was carried out under open field conditions, investigates the effects of different doses of vermicompost (VC₁ = 100 kg da^-1; VC2 = 200 kg da^-1), farmyard manure (FM₁ = 1500 kg da^-1; FM2 = 3000 kg da^-1) and control (without treatment) applications on spinach (Spinacia oleracea var. L.) growth and soil fertility in winter season. Generally, plant growth, yield, nutrient contents and soil fertility parameters were higher in FM₂, whereas VC applications gave the better results compared to the control. Especially, VC₂ application was more effective on plant Fe and soil Ca concentration. Soil pH, EC and organic matter values increased to a different extent in comparison to the control; we determined that FM applications responded well with regard to soil N, P, K and Mg concentrations. In conclusion, FM₂ application was superior to the others in terms of plant growth, nutrient concentrations and soil fertility. Keywords : Spinach, Plant growth, Soil fertility, Farmyard manure, Vermicompost