Effects of vermicompost and farmyard manure applications on spinach (Spinacia oleracea var. L.) growth and soil fertility

Abstract

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

Vermikompost ve ahır gübresi uygulamalarının ıspanak (Spinacia oleracea var. L.) bitkisinin gelişimi ve toprak verimliliği üzerine etkileri

Abstract

Açık tarla koşullarında kış döneminde yürütülen bu çalışmada, farklı dozlarda vermikompost (VC1= 100 kg da-1; VC2= 200 kg da-1), ahır gübresi (AG1=1500 kg da-1 AG2=3000 kg da-1) ve hiçbir muamele yapılmayan kontrol uygulamalarının ıspanak (Spinacia oleracea var. L.) bitkisinin gelişimi ve toprak verimliliğine etkileri araştırılmıştır. Genel olarak bitki gelişimi, verim, mineral madde kapsamı ve toprak verimliliği parametrelerine AG2 daha etkili olurken, VC’li uygulamalar da kontrole oranla önemli artışlar göstermiştir. Özellikle bitkinin Fe içeriği ile toprağın Ca içeriği üzerine VC2 uygulaması en iyi sonucu vermiştir. Toprağın pH, EC ve organik madde değerleri tüm uygulamalarda kontrole oranla farklı derecelerde artışlar göstermiş; toprağın N, P, K ve Mg içeriklerine AG’li uygulamaların daha etkili olduğu tespit edilmiştir. Sonuç olarak, AG2 uygulamasının diğer uygulamalara oranla bitki gelişimi, besin elementi kapsamı ve toprak verimliliği bakımından daha iyi sonuçlar verdiği belirlenmiştir.

Keywords

• Ispanak; Bitki gelişimi; Toprak verimliliği; Ahır gübresi; Vermikompost

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