Land evaluation analysis is a prerequisite to achieving optimum utilization of the available land resources. Lack of knowledge on best combination of factors that suit production of yields has contributed to the low production. The aim of this study was to determine the most suitable areas for agricultural uses. For that reasons, in order to determine land suitability classes of the study area, multi-criteria approach was used with linear combination technique and analytical hierarchy process by taking into consideration of some land and soil physico-chemical characteristic such as slope, texture, depth, derange, stoniness, erosion, pH, EC, CaCO3 and organic matter. These data and land mapping unites were taken from digital detailed soil map scaled as 1:5.000. In addition, in order to was produce land suitability map GIS was program used for the study area. This study was carried out at Mahmudiye, Karaamca, Yazılı, Çiçeközü, Orhaniye and Akbıyık villages in Yenişehir district of Bursa province. Total study area is 7059 ha. 6890 ha of total study area has been used as irrigated agriculture, dry farming agriculture, pasture while, 169 ha has been used for non-agricultural activities such as settlement, road water body etc. Average annual temperature and precipitation of the study area are 16.1 o C and 1039.5 mm, respectively. Finally after determination of land suitability distribution classes for the study area, it was found that 15.0% of the study area has highly (S1) and moderately (S2) while, 85% of the study area has marginally suitable and unsuitable coded as S3 and N. It was also determined some relation as compared results of linear combination technique with other hierarchy approaches such as Land Use Capability Classification and Suitability Class for Agricultural Use methods.

Sewage sludge (SS) is one of the significant wastes of modern city lifestyle with environmental consequences. This study was conducted to determine the effect of the municipal sewage sludge on the potato plant’s yield and nutrient elements and heavy metals content in a clay loam textured calcareous soil. The field treatment (corn-wheat-potato rotation) was implemented as fixed randomized blocks with 3 replications. The treatments were: control (without fertilizer), optimum fertilizer (OCF), 20, 40, 80, 100, and 120 ton ha-1 SS incorporation. The third-year results regarding the potato cultivation were presented. Results indicated that 4 ton ha-1 SS treatment resulted in a greater yield than the optimum fertilizer. The sewage sludge influenced the mineral nutrient composition of the leaves and the roots and the heavy metal concentrations in the plants were below the Turkish legal threshold values. Excessive application of SS had an inverse effect on the yield and reduced the essential nutrient concentrations of the leaves of the potato plants. This suggested that the residual effects of SS in the third year were considerable for either heavy metal concentrations or plant nutrients in the soil. Therefore, it can be concluded that a site-specific determination of the SS application rate is required to avoid potential deleterious effects of SS.

Topraklar ana materyal, iklim, topografya, zaman ve organizmaların ortak etkisi altında oluşurlar. Toprak oluşumu için geçen zaman toprakların özelliklerini etkiler ve onların ayrışma oranlarını belirler. Bu etki zamanla fiziksel, kimyasal, biyolojik ve mineralojik özelliklerin değişimi veya değişik sayılarda horizon farklılaşması gibi olaylarla ortaya çıkar. Bu çalışma yarı kurak iklim koşulları altında farklı fizyografya, benzer ana materyal üzerinde yer alan toprakların pedogenesislerini incelemek amacı ile yürütülmüştür. Çalışma Konya ili Çumra ilçesinde Miyosen marn ana materyalli ve üç farklı fizyografik ünite üzerine yer alan topraklarda gerçekleştirilmiştir. Toprak oluşumları fizyografya ve ana materyalle yakın ilişki içerisindedir. Bu ilişkiler toprakların fiziko-kimyasal ve morfolojik özelliklerini etkilemektedir. Aluviyal ova tabanı ve birikinti yelpazelerde yer alan topraklarda ileri toprak gelişimi gözlenirken, aşınım yüzeyleri üzerinde yer alan topraklar zayıf pedolojik gelişim göstermektedir. Çalışma alanı mesic toprak sıcaklık ve xeric toprak nem rejimlerine sahiptir. Toprak taksonomisine göre altı profil Entisol ve Inceptisol ordolarında sınıflandırılmıştır.