Bu çalışma ile günümüzde ısınma amaçlı ve mobilyacılıkta dolgu malzemesi olarak kullanılan fındık kabuğunun organik bir materyal olan biyokömüre dönüştürülerek, farklı topraklarda yetiştirilen buğday bitkisinin rizosfer bölgesindeki mikrobiyal aktivite üzerine etkinliği araştırılmıştır. Sera şartlarında, kumlu killi-tın ve kumlu-tınlı tekstüre sahip iki farklı toprağa 0, 10 ve 20 ton/ha biyokömür ilave edilerek buğday bitkisinin rizosfer bölgesindeki biyolojik özellikleri (mikrobiyal biomass-C, CO2-üretimi, üreaz, asit fosfataz ve alkalin fosfataz aktiviteleri) üzerine etkileri incelenmiştir. Araştırma sonuçlarına göre üreaz enzim aktivitesi her iki tekstürde de 10 ton/ha dozu ile etkili olurken, asit ve alkalin fosfataz enzim aktivitesi kumlu-tın tekstürde10 ton/ha dozunda, kumlu-tın bünyede ise 20 ton/ha uygulamasında daha etkili bulunmuştur. CO2 üretimi ve mikrobiyal biyomass-C değerlerinde ise sırası ile 10 ton/ha ve 20 ton/ha dozları öne çıkmıştır.

The interactions between plant, soil, and mycorrhizal fungi are ecologically and agriculturally beneficial systems. Mycorrhizal fungi are capable of forming a symbiosis with the roots of many plants in nature. In this symbiosis, the plant receives help from the mycorrhizal fungus in nutrient and water uptake. On the other hand, the mycorrhizal fungi supply the assimilant products they need from the plant. In addition to the many benefits of AMF, they have very important roles in carbon (C) storage in the soil. These roles of AMF are associated with the production of a substance named “Glomalin”. Glomalin, an N-linked glycoprotein that is considered to be AMF gene products, is defined as a protein secreted by AMF hyphae and spores. Glomalin significantly reduces the degradation of soil organic matter by preserving unstable compounds in soil aggregates. Glomalin, which helps soil aggregation, is also an excellent hyphae protector.

Due to its importance for organic agriculture, one of the most important agricultural production systems, various sources have been proposed to increase soil organic matter content. Vermicompost is one of those sources known as the resistant last form of farmyard manure which is degraded by earthworms. Soil organic matter or humus and their compounds are nutrient sources that increase physical, chemical and biological quality of soil. Humus and humus compounds improve soil physical, chemical and biological quality parameters increasing rhizosphere aeration and water holding capacity, rehabilitating soil structure, providing plant nutrients and constituting natural media for microorganisms with their regulative effects on soil reactions. In this study, the effects of vermicompost on yield and some growth parameters of lettuce were investigated. For this purpose, a random block designed experiment with 5 different applications was conducted in 3 replicates. The applications were control, vermicompost applications of 100 kg, 200 kg and 300 kg per decare and conventional fertilization. According to the results obtained, yield and growth parameters were improved by vermicompost application when compared to control and conventional fertilization. As a result of this study, it was concluded that 300 kg vermicompost/da is a promising application in lettuce production for optimal yield and soil improvement.