Organic Fertilizers Improved Plant Growth and Mineral Content of Lettuce (Lactuca sativa L.)

Abstract

The effects of two different organic fertilizers, which differ ratio according to the NPK content, on plant growth and mineral content in lettuce (Lactuca sativa L. cv. Yedikule) were examined in this study. In addition, nitrate contents were determined. The study was conducted as a pot experiment in the greenhouse conditions, and two organic fertilizers named CombiPower® (8-8-8) and SuperPower® (10-25-0) were used. Chlorophyll reading value, stem diameter, plant height, number of leaves, vitamin C, root and shoot fresh and dry weights and mineral contents of leaf and roots were examined in lettuce. Plant growth with fertilizers used in the study is higher than the control without any application, in addition, it was determined that the mineral contents increased with fertilizers in plant leaves and roots. With applications, an increase in root and leaf nitrate content has also occurred compared to control, but this increase was not at critic levels. It is thought that the fertilizers used in this study may have important benefits in terms of plant growth and yield in lettuce cultivation.

Keywords

• lettuce
• plant growth
• mineral content
• nitrate

Effects of Organic Fertilizers Improved Plant Growth and Mineral Content of Lettuce (Lactuca sativa L.)

Öz

Bu çalışmada, NPK içeriğine göre oran farklılığı gösteren iki farklı organik gübrenin marulda (Lactuca sativa L. cv. Yedikule) bitki gelişimi ve mineral madde ve nitrat içeriği üzerine etkileri incelenmiştir. Sera koşullarında saksı denemesi olarak yürütülen çalışmada, CombiPower® (8-8-8) ve SuperPower® (10-25-0) isimli iki organik gübre kullanılmıştır. Marulda yaprak klorofil okuma değeri, gövde çapı, bitki boyu, yaprak sayısı, C vitamini, kök ve bitki taze ve kuru ağırlıkları ile yaprak ve köklerin mineral içerikleri incelenmiştir. Çalışmada kullanılan gübrelerle bitki büyümesi, herhangi bir uygulama yapılmayan kontrole göre daha yüksek olduğu, ayrıca bitki yaprak ve köklerinde gübreler ile mineral içeriklerinin arttığı tespit edilmiştir. Uygulamalar ile kontrole göre kök ve yaprak nitrat içeriğinde de artış meydana gelmiş ancak bu artış kritik düzeyde olmamıştır. Bu çalışmada kullanılan gübrelerin marul yetiştiriciliğinde bitki gelişimi ve verimi açısından önemli faydaları olabileceği düşünülmektedir.

Anahtar Kelimeler

• marul
• bitki gelişimi
• mineral içerik
• nitrat

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