Imanverdi Ekberli

Ondokuz Mayıs Üniversitesi · Department of Soil Science and Plant Nutrition

Küresel ısınma toprak sıcaklığının ve toprakların ısısal özelliklerinin değişimini sürekli olarak etkilemektedir. Bu nedenle, farklı toprak ve iklim koşullarında toprakların sıcaklık rejiminin iyileştirilmesi ve tahmin edilmesi yöntemlerinde ısısal özelliklerin belirlenmesi gereklidir. Bu araştırmada, arazide belirlenen sıcaklık ölçümlerine göre, C...

Toprak özelliklerinin değişimi, bitki gelişimi için optimum toprak ortamının oluşturulması, toprak oluşum süreçlerinin açıklanması vb. topraktaki maksimum sıcaklıkla ilişkili olup, topraktaki maksimum sıcaklığın teorik ve deneysel olarak belirlenmesi gereklidir. Bu çalışmada, toprağın ısı iletkenliği denkleminin çözümünden elde edilen maksimum topr...

Plant growth, along with other soil properties, is strongly related to optimum soil temperature in the plant-root zone. In this research, the theoretical expression obtained based on the conservation of energy for soil heat flow and the Fourier law was used to evaluate the temperature in the plant-root zone. It has been shown that the temperature v...

Bu çalışmanın amacı, Çarşamba Ovasında yetiştirilen soya fasulyesi bitkisinin (Glycine max. L. Merill) verim parametreleriyle (bitki boyu, bin tane ağırlığı ve tane verimi) toprakların bazı fiziksel özellikleri arasındaki korelasyon ilişkilerine bağlı olarak, bu özellikler arasında deneysel (pedotransfer) modellerin oluşturulması ve elde edilen mod...

The effects of deforestation on soil properties and soil organic C (SOC) stock in adjacent pasture and forest areas located on the same hillslope position were investigated. The soil properties measured in the forest site had higher coefficient of variation compared with pasture site. Deforestation made almost 50 years ago significantly increased b...

Mathematical modeling of the groundwater level depending on the change of groundwater table height It is necessary to evaluate the change of the ground water table, the depth and level of groundwater for regulating the amount of irrigation water in the agricultural areas, preventing salinization in the plant-root region, and planning the drainage...

Bu çalışmanın amacı, Çarşamba Ovasında yetiştirilen soya bitkisinin verim parametreleriyle (bitki boyu, bin tane ağırlığı ve tane verimi) toprakların bazı kimyasal özellikleri arasındaki korelasyon ilişkilerine dayanarak, bu özellikler arasında pedotransfer modellerin oluşturulması ve elde edilen modellerin ova topraklarında bitki veriminin tahmini...

The Sustainable Development Goals of the United Nations call for applying soil management practices that contribute land degradation neutrality. Our objectives were to investigate the effect of (i) soil management-conventional tillage (CT under crop) and no-tillage (NT under grass)-and (ii) an amendment (polyacrylamide (PAM)) application on the str...

Toprak katmanlarındaki ısı miktarının değişimi, toprağın termo-fiziksel özellikleri, toprak mikro iklimi, toprak oluşum süreçleri vb. üzerinde önemli bir etkiye sahiptir. Bu çalışmada, toprak profilindeki katmanların anlık soğuması durumunda toprağın bir boyutlu ısı iletkenlik denklemi benzerlik teorisine göre incelenmiştir. Çözüm, hata ve tamamlay...

Bu araştırma, Çarşamba Ovası’nda geleneksel toprak işleme yöntemleriyle soya bitkisi yetiştirilen tarım topraklarının verimlilik durumunu belirlemek amacıyla yürütülmüştür. Bu amaçla, ovada yer alan 20 köyde soya tarımı yapılan arazilerden toprak örnekleri alınmış ve bu örneklerin bazı fiziksel ve kimyasal özellikleri belirlenmiştir. Ayrıca, aynı a...

Toprakta ısı akışının değerlendirilmesi, toprağın sıcaklık rejiminin amenajmanı, toprakta depolanan ısı miktarının belirlenmesi ve toprak sıcaklığının modellenmesi için gereklidir. Bu araştırmada, yarı humid ekolojik koşullar altında oluşmuş bazı Vertisol alt grup toprakların profillerinde ısı akışının belirlenmesi amaçlanmıştır. Vertisol ordosuna...

Bu çalışmanın amacı, Çarşamba Ovası’nda yetiştirilen soya bitkisinin verim parametreleriyle (bitki boyu, bin tane ağırlığı ve tane verimi) toprakların bazı fiziksel ve kimyasal özellikleri arasındaki korelasyon ilişkilerine dayanarak, bu özellikler arasında regresyon modellerin oluşturulması ve elde edilen modellerin ova topraklarında bitki verimin...

The aim of this study was to set regression models based on correlation between yield parameters of maize plant (height, thousand seed weight and yield) and physical and chemical characteristics of soils and to determine applicability of obtained models in estimation of plant yield grown in soils of Çarşamba Plain. Regression coefficient (R), root...

Comparison of heat flow equation and pedotransfer function in prediction of soil temperature Abstract The objective of this study is to compare the cosinusoidal harmonic function (Tcos) obtained from the solution of heat transfer equation and the pedotransfer (Tped) function which are used in prediction of temperature values along the soil profile....

Evaluation of soil stress is important to soil management and related cultural processes to be done in appropriate time, and also important to soil fertility and conservation. In this study, stress and deformation in solid media; the functional relation between stress and strain were investigated theoretically. To evaluate the soil stress due to lo...

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Bu çalışmanın amacı, Çarşamba Ovası’nda yetiştirilen buğday bitkisinin verim parametreleriyle (bitki boyu, bin tane ağırlığı ve tane verimi) toprakların bazı fiziksel ve kimyasal özellikleri arasındaki korelasyon ilişkilerine dayanarak, bu özellikler arasında pedotransfer modellerin oluşturulması ve elde edilen modellerin ova topraklarında bitki ve...

Bu çalışmada, Çarşamba Ovası’nda geleneksel toprak işleme yöntemleriyle ana ürün olarak mısır bitkisi yetiştirilen tarım topraklarının bazı fiziksel ve kimyasal özellikleri araştırılmıştır. Bu amaçla, Samsun ilinde yer alan Çarşamba Ovası’nın 20 köyünde çiftçiler tarafından mısır tarımı yapılan arazilerden toprak örnekleri alınmıştır. Araştırma 201...

Sıcaklık dalgalarının toprak yüzeyinde ve alt katmanlarında dağılımı, toprak özelliklerinin yanı sıra, toprakların ısı kapasitesi, ısısal yayınım, ısı iletkenliği ve yüzey ısı akışı gibi ısısal özelliklerine de önemli düzeyde bağlıdır. Bu çalışmada, (i) toprak yüzeyinde ısı akışının sabit olması durumunda ısı akışı denkleminin çözümüne ve Fourier k...

The aim of this study was to determine some physical properties of soil and agronomic characteristics of wheat plant (plant height, thousand seed weight and seed yield) grown in Turkey's Samsun Çarşamba plain, to set pedotransfer models between these properties and to determine applicability of obtained models in estimation of yield in the plain so...

Phase change in soil temperature should be taken into account in application of heat conductivity equation to different soil layers. In this study, applicability of the solution in daily soil temperature change was provided with consideration of phase change in the heat conductivity equation. Root mean square error, absolute error, maximum relative...

Knowing wetting depth of soil is an important factor to determine the irrigation water amount depends on the development of plant root system in vegetation period. In this study, wetting depth of soil in corn grown area was estimated according to active soil layer, irrigation water amount, soil moisture change and field capacity using mathematical...

This study was carried out to determine the effects of rice husk compost, town waste compost and tobacco waste applications on soil dehydrogenase enzyme activity in soils having different pH levels under greenhouse conditions. Soil samples used in this study were taken from (0-20 cm) depth of soil surface of the fields around Samsun. Soil samples a...

The performance of rainfall simulators strongly depend on their construction properties and princi�ples of operation. The most important criterion in evaluation of simulator performance is the compati�bility of rainfall characteristics between simulated and natural rainfall. This study aims to (i) identify the simulator design principles (ii) d...

Bu calisma; asit, notr ve alkalin reaksiyona sahip topraklarin bazi mekaniksel ozellikleri uzerine; cop kompostu, tutun isleme atigi ve celtik kavuzu kompostunun etkilerini, sera kosullarinda belirlemek amaci ile yurutulmustur. Calismada kullanilan toprak ornekleri Samsun ili ve cevresinde yer alan arazilerden ve yuzeyden (0-20 cm) alinmistir. Aras...

Heat diffusivity is an important parameter for monitoring soil temperature. In this study, soil temperatures througout to soil depth were determined with respect to the heat diffusivity coefficient values measured and obtained with functionel relations, and compared eachother. Mean heat diffusivity values for 5-10; 10-20; 20-50; 50-100 cm soil laye...

Spatial variability of soil physical properties in a cultivated field such as; bulk density (BD), penetration resistance (PNT), saturated hydraulic conductivity (Ks), field capacity (FC) and permanent wilting point (PWP), were determined by geostatistical method. While BD values varied between 1.12 and 1.41 g cm-3, PNT resistance (0.66 to 1.88 MPa)...

Spatial variability of soil physical properties in a cultivated field such as; bulk density (BD), penetration resistance (PNT), saturated hydraulic conductivity (Ks), field capacity (FC) and permanent wilting point (PWP), were determined by geostatistical method. While BD values varied between 1.12 and 1.41 g cm-3, PNT resistance (0.66 to 1.88 MPa)...

Heat diffusivity is an important parameter for monitoring soil temperature. In this study, soil temperatures througout to soil depth were determined with respect to the heat diffusivity coefficient values measured and obtained with functionel relations, and compared eachother. Mean heat diffusivity values for 5-10; 10-20; 20-50; 50-100 cm soil laye...

Studying and modeling the effects of soil properties and management on soil structure and near saturation water retention is vital for the development of effective soil and water conservation practices. The contribution of soil intrinsic properties and extrinsic conditions to structure stability was inferred, in quantitative terms, from changes in...

zet Bu çalışma, farklı pH değerine sahip yüzey toprak örneklerine sera koşullarında çöp kompostu (ÇK), tütün işleme atığı (TİA) ve çeltik kavuzu kompostu (ÇKK) uygulamasının elverişli çinko (Zn) miktarına etkilerini belirlemek amacıyla yürütülmüştür. Deneme toprakları kili tın ve tın tekstürlü, asit, nötr ve alkalin reaksiyonlu, tuz içeriği düşük,...

ZET Toprakta ısı iletkenliğinin teorik olarak belirlenmesi sıcaklık alanı ve sıcaklık alanına etki yapan ısı özellikleri ile ilişkilidir. Toprakta ısı özelliklerinin incelenmesi, toprak sıcaklığının tahmin edilmesi ve optimum toprak sıcaklığın oluşturulması için önemlidir. Bu çalışmada zamana ve mesafeye bağlı olarak sıcaklık alanı, sıcaklık gradye...

Distribution of temperature along soil surface and profile is a factor which affects on soil properties and fertility significantly. In this research, two dimensional heat conductivity equation was investigated in case of heterogeneous heat distribution regardless of heat source in media. Also, prediction of temperature change along soil profile wa...

Instant heating and cooling of soil surface has an important effect on soil micro climate and soil processes. In this research, one dimensional heat conductivity equation was investigated in case of instant heating and cooling soil surface conditions. Similarity theory was applied for solution of the equation. The solution was expressed in a simple...

Studying and modeling the effects of soil properties and management on soil structure, a basic property of soil health, is vital for the development of effective soil and water conservation practices. Contribution of soil intrinsic properties and extrinsic conditions on structure stability was inferred in quantitative terms from changes in the wate...

The objective of the present investigation is to find out the effect of incorporating of various organic and inorganic matter sources such as lime (L), zeolit (Z), polyacrylamide (PAM) and biosolid (BS) on the instability index. A bulk surface (0–20 cm depth) soil sample was taken from Samsun, in northern part of Turkey. Some soil properties were d...

In this study, changes in some soil quality indexes in a hazelnut orchard located in the Black Sea Region of Turkey were investigated after 6 months of compost (CMP) and hazelnut husk (HH) applications. CMP and HH applications increased soil organic carbon (OC) content from 1.40% to 2.57 and 3.51%, and electrical conductivity from 0.06 dS m−1 to 0....

Changes in the soil temperature and thermal diffusivity conditions are one of the most important components of soil microclimate and have a considerable impact on changes iÖn soil properties and plant development processes. This study is carried out in a field covered with grass (I. experimental field) and another field covered with peach trees (II...

Spatial variability of soil physical properties in a cultivated field such as; bulk density (BD), penetration resistance (PNT), saturated hydraulic conductivity (Ks), field capacity (FC) and permanent wilting point (PWP), were determined by geostatistical method. While BD values varied between 1.12 and 1.41 g cm-3, PNT resistance (0.66 to 1.88 MPa)...

The objectives of this study were to develop an equation and derive equation for different boundary conditions of sprinkler irrigation drop falling and to stop runoff from soil surface. Irrigation scheduling is the process related to when, how much water to apply to a soil. The irrigation method concerns how that desired water depth is applied to t...

The importance of empirical and theoretical model derivation in agriculture has been increased due to presence of overwhelming data obtained from researches in soil science and extensive usage of computer in Agriculture. Mathematical definition of fertility is significantly related to research of ecological fertility, usage of maximum parameter val...

In this research, the effects of 5% treatment of hazelnut husk (HH) and tea production waste (TEW) to clay loam soil on urease enzyme activity and its kinetics were determined in a 30-day soil incubation experiment. For this purpose, kinetic parameters (Vmax, Km, and Vmax/Km,) were calculated by determining urease activity in organic wastes treated...

This research was conducted to determine the effects of tobacco waste and straw incorporated to soil on urease activity and kinetics by an incubation experiment. For this purpose, clay loam soil sample and organic wastes were mixed until reaching 5% dry weight and this mixture was incubated in 25 +/- 0.5 degrees C temperature for 30 days. Following...

In the present work, urease enzyme activity of clay loam soil (pH 7.1, organic matter 2.26%, C/N ratio 16), kinetic (Vmax, Vm and Vmax/Km) values and thermodynamic (Ea, ΔH, ΔS and ΔG) parameters of this enzyme is determined. For this, purpose, kinetic and thermodynamic parameters are calculated by determining urease activity in soil in different su...

Catalase enzyme and its kinetic parameters (Vmax, Km, and Vmax/Km) were determined in order to assess adding earthworm L. terrestris to the soil. As a result, it has been determined that there is a low level of catalase activities, which is an important criterion in evaluation of aerobic micro-organisms, despite the fact that earthworm casts contai...

Soil temperature has very significant effect on biological development of plant and physical, chemical, biological properties of soil. The variance of temperature depending on time and soil depth forms heat transportation and therefore it enables constitution of temperature regime. In this research, it has been determined with a help of experiments...

According to the solution of convective diffusion equation, which defines salt transportation in soils, effectiveness and practical value of calculations depend on hydro-chemical parameters. In this study, mathematical expressions, which enable to find hydro-chemical parameters of salt transportation in soil, were determined based on the solution o...

In this study, diurnal soil temperature fluctuation through a clay soil depth was estimated with respect to time using a measured data set in a cosinusoidal harmonic equation. Some soil thermal properties, such as amplitude, heat diffusivity, damping depth and retardation time were also determined at 0, 10, 20, 30, 40 and 50 cm soil depth. The high...