Vermikompostun Farklı Tekstürlü Toprakların Agregat Stabilitesi, Hacim Ağırlığı ve Bazı Kimyasal Özelliklerine Etkisi

Year 2020, , 1 - 11, 26.01.2020

Tezcan Aktaş Orhan Yüksel

https://doi.org/10.33462/jotaf.598809

Cited By: 5

Abstract

Bu çalışmada, organik
bir gübre olan vermikompostun farklı tekstüre sahip iki toprağın bazı fiziksel
ve kimyasal özellikleri üzerine etkisi araştırılmıştır. Deneme, 2 toprak tipi,
5 vermikompost dozu ve 3 tekerrür olmak üzere toplam 30 saksıdan oluşmaktadır.
Kuru ağırlık üzerinden hesaplanan vermikompost dozları 5 kg’lık saksılara
uygulanmış toprak-vermikompost karışımları laboratuvar koşullarında yaklaşık 90
gün inkübasyona bırakılmışlardır. Analiz sonuçlarına göre vermikompost
uygulaması her iki toprak tipinde de organik madde miktarını, pH, elektriksel
iletkenlik (EC) ve katyon değişim kapasitesi (KDK) değerlerini önemli düzeyde
arttırmıştır. Toprakların pH değerleri asit karakterli olan tınlı topraklarda
yükselmiş, nispeten yüksek pH ya sahip killi topraklarda düşmüştür. Yüksek
organik madde içeriğine sahip olması nedeni ile vermikompost toprakların KDK
içeriklerini önemli düzeyde arttırmıştır. Toprakların organik madde miktarları
ile CEC değerleri arasında pozitif ve önemli korelasyon bulunmuştur. Vermikompost
toprakların fiziksel özelliklerini de olumlu etkilemiş ve agregat stabilitesini
arttırırken hacim ağırlığını düşürmüştür. Vermikompost agregat stabilitesini
tınlı toprak tipinde önemli düzeyde arttırırken, killi toprak tipinde etkisi
belirgin bulunmamıştır. 

Keywords

Vermikompost, toprak tekstürü, killi toprak, aggregat stabilitesi, hacim ağırlığı

Effects of Vermicompost on Aggregate Stability, Bulk Density and Some Chemical Characteristics of Soils with Different Textures

Abstract

This study was conducted to investigate the
effects of vermicompost treatments on physical and chemical characteristics of
two soils with different textures. Experiment was conducted in 30 pots with two
different soil types, 5 vermicompost doses and 3 replications. Vermicompost
doses were placed into 5 kg pots in dry bases and soil-vermicompost mixtures
were incubated under laboratory conditions for about 90 days. Vermicompost
treatments had significant effects on organic matter content, pH, electrical
conductivity (EC) and cation exchange capacity (CEC) of both soils. Increasing organic
matter contents and salinity values were observed with increasing vermicompost
doses. As compared to the control treatment, soil salinity greatly increased
with the greatest vermicompost dose (16 t da^-1). With vermicompost
treatments, pH of acidic loamy soils increased and pH of clay soils with
relatively high pH levels decreased. Since vermicompost has high organic matter
content, it increased soil CEC values significantly. There were significant
positive correlations between organic matter content and CEC values of the
soils. Vermicompost treatments had positive effects also on soil physical
characteristics, increased aggregate stability (AS) and decreased bulk density
(BD) of the soils. While vermicompost treatments increased aggregate stability
of loamy soils remarkably, such effects were not remarkable in clay soils. 

Keywords

Vermicompost, soil texture, clay soil, aggregate stability, bulk density

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