35 research outputs found
Changes in physical and hydraulic properties of a clay soil due to the irrigation of tomatoes with recycled wastewater
No full textTemporal Changes and Evaluation of Quantity Suspense Sediment Transport at Murat River in Palu Precipitation Basin
No full textİklimsel özelliklere bağlı olarak herhangi bir bölgeye düşen fazla yağışın bir bölümü perkolasyon ile yeraltı suyuna karışırken bir bölümü de yüzey akışa neden olmaktadır. Topraklar, yağış şiddeti, arazi kullanımı ve topoğrafyanın etkisiyle yüzey akışla taşınmaktadır. Bu çalışmada Murat Nehri üzerindeki Palu ve Akkonak sediment ölçüm istasyonlarına ait veriler kullanılarak Palu yağış havzasından taşınan sediment miktarı zamansal olarak değerlendirilmiştir. Yapılan hesaplamalarda 2000-2011 yılları arasında taşınan sediment miktarının arttığı saptanmıştır. Bununla birlikte Nisan ve Kasım aylarında sediment taşınımının yüksek değerlere ulaştığı belirlenmiştir. Çalışma sonucunda Palu yağış havzasından Murat nehrine taşınan toprak miktarı 9.8 milyon ton yıl-1olarak belirlenmiştir
Farklı sulama stratejileri ile atık su uygulamalarının Bingöl koşullarındadomates bitkisinin verim ve kalitesi ile toprak özelliklerine etkisi
No full textİşlenen ve İşlenmeyen Arazilerde Bazı Ağır Metallerin Toprak Profili Boyunca Değişiminin Değerlendirilmesi
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Effects of Recycled Wastewater Applications with Different Irrigation Practices on the Chemical Properties of a Vertisol
No full textThe soil degradation caused by the use of low-quality waters in agriculture may be restricted with reorganization of irrigation practices. Therefore, a 2-year study was conducted to determine the changes in chemical and biological properties of soil layers of 0-30, 30-60, and 60-90 cm of a tomato field that was irrigated by recycled municipal wastewater with different drip practices (full, DI: deficit irrigation, and PRD: partial root-zone drying irrigation). The study results showed that the soil electrical conductivity (EC) and exchangeable sodium percentage (ESP) values after the experiment were quite low considering the problematic levels (>4 dS/m for EC, and >15% for ESP), and the organic matter content did not change significantly. The highest N, P2O5, and K2O concentrations were determined in 0-30 cm soil layer for fully irrigated with wastewater, whereas the PRD and DI treatments irrigated with 50% water saving resulted the lowest soil fertility. Wastewater treatment also increased concentrations of micro- and trace minerals, but the toxic element concentrations were in safe limits considering the FAO/WHO and national standards. In this 2-year study, it can be mentioned that treated wastewater applications increase soil fertility owing to the increase in macro and micronutrients. It may be suggested that wastewater treated with PRD and DI applications can be used in case of water shortages
Contamination and potential mobility assessment of potentially toxic elements (PTEs) in soils in relationship with different geographic factors and soil erosion class.
No full textPotentially Toxic Elements (PTEs) contamination in soils represents a significant concern for environmental health, agricultural productivity, and ecosystem sustainability. This study evaluates the impact of various environmental parameters, including elevation (1000–1500 m, 1500–2000 m, and 2000–2500 m), slope (0–20%, 20–40%, 40–60%, and > 60%), aspect (North, East, West, South, and Flat), land use (pasture, degraded forest, and forest), and erosion class (0–5, 5–12, 12–25, 25–60, and > 60 tons ha⁻1 yr⁻1) on the spatial distribution and potential mobility of PTEs (Cd, Co, Cu, Fe, Mn, Ni, Pb, and Zn) within the Çapakçur Microcatchment in Eastern Anatolia, Turkey. A total of 428 soil samples were collected from a depth of 0–20 cm using the grid method in the microcatchment, and the necessary analyses were performed for the study. Soil losses were figured out using the RUSLE method, and to assess for contamination, we used several measures: the Contamination Factor (CF), Enrichment Factor (EF), Geo-accumulation Index (Igeo), Pollution Load Index (PLI), and Modified Degree of Contamination (mCd) indices. The findings generally indicate low levels of PTEs content; however, slope and erosion play a determining role in the spatial distribution of metals, particularly Co, Zn, and Pb. The highest Cd and Co contents were detected in lands with a high slope (> 60%) and in forest areas. The Zn content was found to be higher in low-slope pasture areas. According to the CF and Igeo indices, the soils are mostly in the “lowly polluted” and “unpolluted” categories. However, the elements Co and Ni have reached “moderate contamination” and “significant enrichment” levels in some classes. The mCd values remained below the established contamination threshold of 1.5 defined in the mCd index classification, indicating a generally low degree of contamination across all groups. The results indicate that land topography and land use have significant effects on PTEs distribution in the soil. Specifically, slope and erosion directly impact metal mobility and bioavailability, making it crucial to consider these parameters for sustainable land management.</p
Trend analysis and agricultural perspective availability of water quality parameters at Murat river Murat Nehri Su kalite Parametrelerinin Trend Analizi ve Tarımsal Açıdan Kullanılabilirliği
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