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In this study, the productivity level of agricultural lands in the central and district villages of Kilis province was investigated. For this purpose, texture, pH, EC, CaCO3, organic matter, phosphorus and potassium analyzes were made in the samples taken from 0-30 cm depth of the soil. To determine some physical and chemical analyzes of the soil, 40 soil samples were evaluated in terms of productivity. According to the findings, the agricultural soils of Kilis province have a slightly alkaline reaction, 55% are clayey, 30% are clay loam, 15% have loam texture, 12.5% of the soils are very low in terms of organic matter content. 50% were in the low, 32.5% moderate and 5% good class. It has been determined that the agricultural soils of Kilis province are generally unsalted, 2.5% lime, 67.5% moderately lime, 22.5% highly lime and 7.5% too high lime. It has been revealed that high lime content in agricultural soils limits the availability of some important nutrients such as phosphorus. Agricultural soils in Kilis province have sufficient potassium, 24% of them have very low phosphorus content, 14% are low and 2% are in the middle class. For a continuous and efficient plant production, the nutrient removed from the soil must be added to the soil again. Producers Kilis province produce in these soils with high lime and low organic matter without fertilization. Nutrients in the soil are consumed by plants over the years. As a result of this process, the fertility of the soil decreases and the product yield decreases. Producers of our province limit the use of mineral fertilizers for economic reasons. Due to the weed problem, farm manure is not preferred. According to the results of the soil analysis, the required amount of fertilizer should be applied during the periods when there are nutritional problems in the agricultural lands where field crops and vegetables are grown in Kilis and when the plants need it. In addition, importance should be given to the use of organic fertilizers and thus sustainable fertility of the soil should be ensured. [ABSTRACT FROM AUTHOR]

Acidification of soils is one of the most important soil degradation processes and this type of soils can be provisionally remediated towards increasing soil fertility by liming practices. However, Ca / Mg containing liming materials cannot be used in areas where perennial calcifuge plants are present. The aim of this study is to determine the ability of materials such as milled fine-grained forms of zeolite and feldspar with alkaline character to neutralize acid ions in soil environment. The ability to buffer H ions was determined by equilibrating HCl solution at varying concentrations with zeolite samples having a particle size of 1-0.5 mm, 0.5-0.25 mm and 0.1 mm and feldspar with a particle size <0.1 mm. The titration curves of the zeolite samples were found to vary significantly depending on the particle size and all zeolite sizes had better buffering ability than the feldspar. As a result, it has been concluded that zeolite and feldspar can be used as an alternative liming material for calcifuge plants both in remediating the acidity and in improving the chemical properties of soils. [ABSTRACT FROM AUTHOR]

The swelling potential and the effect of lime as a stabilizing agent on the swelling behavior of clays found in the residential area of Gölbaşı (Ankara) district was investigated. It was determined that, high plasticity clays (CH) that have medium to high swelling potential exists locally in the area with swelling potentials and swelling pressures that range between about 3.5% and 9.0%, and 65 kPa and 250 kPa, respectively. The corresponding values for clays of the area that are classified as CL were determined to be between 0.5% and 1.5%, and 5 kPa and 10 kPa, respectively. Samples of CH clays that pose a threat to lighter structures were treated with the addition of various amounts of lime (from 1% to 9% by weight) and the resulting changes in the swelling pressure and potential were examined. The results indicate that addition of 5% or more lime by weight results in a reduction of swelling potential and the swelling pressure by 91% and 73% respectively. [ABSTRACT FROM AUTHOR]