U. Sahin

U. Sahin
Ataturk University · Department of Agricultural Structures and Irrigation

Professor
Agricultural GHG emissions; Wastewater Irrigation and Waste Management in Agriculture Soil amelioration with wastes

About

142
Publications
58,926
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,862
Citations

Publications

Publications (142)
Article
Full-text available
This study aimed to determine the effects of three irrigation water levels on the yield, soluble solid content and some physiological traits of pepper plants in soils mixed with biochar at four different doses. The study was conducted as a pot experiment in three replications for each treatment setup in a completely randomized design under greenhou...
Article
Direct sowing and deficit irrigation practices can reduce the effect of wastewater on CO2 emissions from soil by providing carbon savings. Therefore, the effect of domestic recycled wastewater uses at different levels in irrigation under conventional tillage and direct sowing practices on the CO2 emission from soil at the end of the vegetation peri...
Article
Full-text available
Organic carbon is transformed into CO2 by various interventions applied to the soil and diffuse to the atmosphere. The manures which used unconscious under available soil moisture and temperature condition makes the soil microorganism activity increased. This causes CO2 emission increase as well by oxidation of organic matter. In this study, it was...
Chapter
Full-text available
Vegetables have a very high percentage of water content. Some of the vegetables, such as cucumber, tomato, lettuce, zucchini, and celery contain over ninetyfive percent of water. As a result of the high-water content in the cells, they are extremely vulnerable plants to water stress and drought conditions. Their yield and quality are affected rapid...
Conference Paper
Full-text available
In this study, the effect of biochar, obtained from pruning waste of rose plant, application under the deficit irrigation conditions was investigated over the plant height, stem diameter, fruit length and leaf color parameters of pepper plant (Capsicum annuum L. cv. Tonton F1). The experiment was conducted by applying three irrigation levels (I0; 1...
Article
Insufficient freshwater resources require the improvement of deficit irrigation with approaches that induced high yields by increasing the adaptation of plants to physiological and photosynthetic responses to water scarcity in the soil. The aim of this study is to evaluate water productivity applying combinations of three different plant growth pro...
Article
The contribution of wastewater irrigation with the improvement of irrigation practices to the productivity of silage maize is a priority issue to investigate considering the saving of scarce freshwater resources and the necessity to dispose wastewater. The aim of this study was to evaluate the effect of different irrigation levels (L100, L67 and L3...
Article
Improving the structure of clay soils with sewage sludge to achieve better aeration and infiltration is one of the practical ways to maintain sustainable use of agricultural land. Furthermore, wetting–drying processes on the surface caused by changing irrigation intervals can supplement benefits to structural improvement under wastewater irrigation...
Article
Using wastewaters in irrigated agriculture can cause heavy metal accumulation as well as salinity in soil. A practical way of minimizing accumulation in soil is to use irrigation techniques that require less water and consequently introduce less heavy metals into the feeding chain in silage maize cultivation with wastewater irrigation. The objectiv...
Article
Full-text available
Today, most of the world's population faces water scarcity, while global warming, urbanization, industrialization and population increases continue to increase the severity of the pressure on water resources. Management of water resources plays a key role in the sustainability of agricultural production. The water footprint (WF) is different in com...
Article
Sufficient quantity and quality of water are essential for vegetable production. Evaluating the individual and combined effects of drought and salt stress on plant establishment may help inform management of plant production in terms of stabilizing yield. This study investigates the effects of drought and salt stress on plant growth, nutrition elem...
Article
Soil salinization is a major environmental hazard that limits agricultural production. Using sewage sludge and recycled wastewaters in amelioration of saline-sodic soils is one of the most effective ways to dispose waste. However, a very low initial permeability of soil in the freeze-thaw conditions can make improvement difficult. Therefore, column...
Article
Full-text available
Günümüzde artan sanayileşme ve kentleşme ile beraber çeşitli çevre kirlilikleri artmış ve birçok çevresel problem ortaya çıkmıştır. Bu problemlerin başında gelen ağır metaller, hava, toprak ve su kaynaklarında kirliliklere neden olmaktadırlar. Bitki fizyolojisini olumsuz etkileyerek, bitkisel üretimin azalmasına neden olan ağır metaller, besin zinc...
Article
Crop production in salty-sodic soils causes poor crop growth due to ion imbalance, water stress, low hormonal and enzymatic balances. The use of rhizobacteria promoting plant growth in saline and sanitary areas (PGPR) is an economical and environmentally friendly approach that increases and eliminates the tolerance of plants to salt. Field experime...
Article
Full-text available
https://link.springer.com/epdf/10.1134/S1021443720040056?sharing_token=NYzL7f1gepzM3plJ7okZHkckSORA_DxfnEvY7GoQybbxB_FtCjVfAj8iVndZx64ba0xA9rax2zbUu95iotr709OlmlXn8Wda2AcU78Jlg1VSF3K2yX3MZFAlFhQzuutnXMClV7RjzAVYIB1CJN4aHbRRw67OcUZsMPIhhNGooVw%3D
Article
Improvement of tillage-sowing practices can be a practical way of sustainable and environmentally friendly production by decreasing fuel and CO2 emission and increasing yield in a rainfed crop rotation [Hungarian vetch (Vicia pannonica Crantz)—winter wheat (Triticum aestivum L. cv. Bezostaja)—fallow] in semi-arid conditions. Therefore, conventional...
Article
Given the growing and urgent need for more effective irrigation strategies in arid and semi-arid regions, a field study was conducted in 2014 and 2015 in eastern Anatolia, Turkey, to evaluate the effects of water deficit treatments on the growth, yield, yield components, quality, and water productivity of black cumin (Nigella sativa L.). Four irrig...
Article
Full-text available
This study was carried out in Van (Turkey) province, has semi-arid climate in 2015 and 2016. In the study, it was aimed to determine the macro micro nutrient element and heavy metal content changes in silage maize by comparing the wastewater (AS) applications with different irrigation methods [Subsurface drip (SSDI), surface drip (SDI), traditional...
Article
Full-text available
The purpose of this study is to evaluate whether the effluent quality of outlet water at Van Province Urban Treatment Facility outlet water is suitable for use in irrigation within the framework of relevant legislation. Methods and Results: In the study, the analysis was carried out at treated waste water samples the months representing the irrigat...
Article
Full-text available
Aims: The purpose of this study is to evaluate whether the effluent quality of outlet water at Van Province Urban Treatment Facility outlet water is suitable for use in irrigation within the framework of relevant legislation. Methods and Results: In the study, the analysis was carried out at treated waste water samples the months representing the i...
Article
The 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 waste...
Article
Full-text available
This study was carried out investigate the effect of treated wastewater on the physical, chemical and hydraulic properties of the soil in Bingöl conditions during 2013 and 2014 years. In this study physical (bulk density, particle density, porosity, wet aggregate stability) and hydraulic properties (field capacity, wilting point, available water co...
Article
Energy requirement increases rapidly in agriculture due to the increase in mechanization. The aim of the present study is to evaluate the energy use efficiency of silage maize under three different tillage practices (conventional, reduced, no-tillage) combined with four different irrigation levels (full and three deficit irrigations). The no-tillag...
Article
Chemical quality analysis results of 5 surface and 30 groundwater resources commonly used in agricultural irrigation in Manisa province were evaluated and the possible effects on soil, plant and drip irrigation system were determined. In this context, the cation (Ca, Mg, Na, K), anion (CO3, HCO3, CI, SO4), Fe, B contents, pH and electrical conducti...
Conference Paper
Full-text available
Global warming, which has been increasing in recent years, is due to the increasing amount of greenhouse gases in the atmosphere. The agricultural sector, which has a 25 % share in greenhouse gas formation, plays an important role in global warming. Carbon dioxide, which has a share of 82 % among greenhouse gases, is shown as the most important gre...
Article
Full-text available
Global warming, which has been increasing in recent years, is due to the increasing amount of greenhouse gases in the atmosphere. The agricultural sector, which has a 25% share in greenhouse gas formation, plays an important role in global warming. CO2, which has a share of 82% among greenhouse gases, is shown as the most important greenhouse gas....
Article
Full-text available
The concept of water footprint can defined as the amount of fresh water utilized in the production or supply of the goods and services. Evaluation of a region's water footprint can provide the sustainability and efficient use of clean water resources. Water footprint helps to create better water management plans and strategies for the future orient...
Article
Deficit irrigation is a general strategy applied for the saving of water in arid and semi-arid regions with limited water resources. This research was carried out in 2014 in Erzurum ecological conditions in order to determine the impacts of different irrigations quantities on the plant height, the number of branches, the number of umbrella, 1000-fr...
Article
Full-text available
The study investigates the effect of water deficit conditions on blossom-end rot (BER) in tomato. Drip irrigation was used in irrigation. Therefore, experiment was conducted as a randomized complete block design (three replicates), in a 2 × 5 factorial arrangement, corresponding to two different water resources [treated wastewater (TWW) and freshwa...
Article
Full-text available
Sulama şebekelerinde performansın düşük olması; bitkisel üretimde kayıplara ve sürdürülebilir sulama alanlarında daralmalara yol açabilmektedir. Sınırlı su kaynaklarını bitkisel üretimde artış sağlayarak ekonomik faydaya dönüştürmeyi amaçlayan sulama yatırımlarından beklenilen yararın sağlanıp sağlanamadığının göstergeleri sulama şebekelerinin perf...
Article
To understand the effects of salt and drought stress factors on the growth, physiological and biochemical responses of cabbage (Brassica oleracea var. capitata), a greenhouse experiment was conducted with different levels of salinity (S0: tap water, S1: tap water containing extra 75 mM dose of NaCl, and S2: tap water containing extra 150 mM dose of...
Article
Full-text available
This study was carried out to evaluate the irrigation system performance of the first and second stage irrigation areas of Daphan Plain, which is constructed and transferred to Daphan Irrigation Association by The State Hydraulic Works in Daphan Irrigation Project area for the years 2012-2016. As a result of the research, it was determined that the...
Article
Successful fennel (Foeniculum vulgare Mill) production in semi-arid environments depends largely on irrigation applications. Deficit irrigation studies on fennel are lacking or very limited, particularly in high-altitude environments. This study was conducted to determine the effects of deficit irrigation levels on the essential oil content, essent...
Article
Full-text available
Search for raw materials, especially for those used in food production, gained further importance with the increasing world population. In recent years, aquaponic systems which integrated form of fish and plant cultivation were increasingly preferred in the search for new food sources. In this study, culture mediums in aquaponic and hydroponic syst...
Article
Full-text available
In recent years, the depleting water resources in response to the increasing need for water along with increase in population have led researchers to search new water resources. Among these sources, the most spectacular one is the use of polluted waters after treatment. One of the alternative methods for the treatment of wastewaters is constructed...
Article
Full-text available
Wastewater use in agricultural irrigation is becoming a common practice in order to meet the rising water demands in arid and semi-arid regions. The study was conducted to determine the effects of the full (FI), deficit (DI), and partial root-zone drying (PRD) irrigation practices using treated municipal wastewater (TWW) and freshwater (FW) on toma...
Conference Paper
In arid and semi-arid regions, because of inadequate and irregular rainfall desired yields can not be obtained. Therefore, there is need to irrigation water. Application of irrigation water with appropriate irrigation method is important in terms of effective use of water resources. In this research, the effects of three different irrigation quanti...
Article
Full-text available
Precipitation and temperature is most variable parameters among climatic components and is important factors in observing of climate change. Precipitation average for many years in Turkey is 643 mm and it is gradually decreasing with the effect of global warming. These decreases in the amount of precipitation will be affected of adverse manner agri...
Article
A two-year field study was conducted to determine the effects on the growth, yield, heavy metal content and water use of cauliflowers, and on the soil chemical properties of irrigation with reclaimed urban wastewaters (filtered, aerated, diluted) by comparing with fresh-water under semiarid climate conditions. Cauliflower curd yield, water use effi...
Article
Full-text available
Soils are a major source which restricts the agricultural production because of the limited and non-producible properties. So, it is very important to be evaluated in a manner appropriate to the characteristics of farm lands. This study was undertaken to prepare the agro-ecological zones and the land use planning of farmlands, on the irrigation are...
Conference Paper
Precipitation is one of the most variable parameters in climate elements and is an important factor in observing climate change. Turkey is gradually decreasing the average rainfall of 631 mm with the effect of global warming. These decreases in the amount of precipitation will affect of adverse manner agricultural production. In addition, water and...
Conference Paper
Full-text available
Drought and salinity are the most common coexistent abiotic stress factors, which affect crop yield and productivity from the first stages of plant development. Evaluating plant establishment under drought, salt or co-occurring stresses might enable to better management of plant production for stabilizing yield. For this reason, we analyzed salinit...
Article
Full-text available
This study was carried out on the Başçakmak rural settlement of Erzurum Aziziye province which the most of buildings were uninhabitable, and reestablished on another area. For this purpose, a survey was planned and conducted according to simple random sampling. Factors to be considered on the reconstruction studies of rural settlements, data of the...
Article
Full-text available
Van ili toprakları 19.069 km2 alan ile Türkiye topraklarının % 2.5’ini oluşturmakta ve bu toprakların yaklaşık 374.500 ha alanı tarım arazisi konumunda bulunmaktadır. Tarım arazisinin 260.000 ha’ya yakın alanı sulanabilir nitelikte olmakla beraber bu alanında %50’si sulanabilmektedir. Sulanamayan alanlar için su kalitesinin düşük olması, sulama suy...
Article
Full-text available
Water stress under reduced irrigation conditions affect plant physiology and hence yield and crop quality. Moreover, high altitude climatic conditions can significantly influence plant physiology. Therefore, a two year field study was conducted to determine the effects of different irrigation quantities on plant growth (leaf number, stem diameter,...
Conference Paper
The sectoral water consumption in the world accounts for approximately 70% of agricultural irrigation water. As the world population increases, the need for food also increases and irrigation water remains insufficient. Therefore, it is necessary to use treated waste water as an alternative to irrigation water. In this study, the use of treated was...
Article
Full-text available
The effect of different irrigation quantities on the growth, marketable yield, crop quality (antioxidant activity, mineral and total phenolic content) and irrigation water use efficiency (IWUE) of spinach grown in a semi-arid region of high altitude (1795 m a.s.l.) was determined. Plants were irrigated with three different irrigation quantities whi...
Article
Full-text available
The objective of this 2-year field study was to evaluate the effects of drip irrigation with urban wastewaters reclaimed using primary (filtration) and secondary (filtration and aeration) processes on red cabbage growth and fresh yield, heavy metal content, water use and efficiency and soil chemical properties. Filtered wastewater (WW1), filtered a...
Article
Water use efficiency (WUE) is considered as an important component of adaptation to drought stress. This study was conducted to determine the effect of drought stress on gas exchange parameters and selected physiological properties, and also its relations with WUE in summer squash seedlings (Cucurbita pepo L.). Plants were grown in pots under diffe...
Article
Full-text available
The goals of the study were to investigate the role of plant growth promoting rhizobacteria (PGPR) (Bacillus megaterium TV-6D, Bacillus megaterium TV-20E, Peanibacillus polymyxa KIN-37, and combination of Bacillus megaterium TV-6D +Pantoea agglomerans RK-92+Brevibacillus choshiensis TV-53D) in alleviating the harmfull effects of drought stress in c...
Article
Full-text available
This study was conducted to determine availability for irrigation and its temporal changing trend of Murat river water quality parameters. Long term water quality parameters (1986-2010) of water quality observation stations on Murat River were used for study. Water quality class was determined as C2S1 depend on electrical conductivity and sodium ad...
Article
Full-text available
In this two-year field experiment the effects of partial root-zone drying (PRD) irrigation technique on yield, growth, yield quality and irrigation water use efficiency (IWUE) of drip-irrigated silage maize were investigated by comparing them with the full root-zone wetting (FI) irrigation technique, under three different irrigation levels (W1: 115...
Article
Full-text available
The aim of this study was to determine the effects of selected plant growthpromoting rhizobacteria (PGPR) on some physiological characteristics, plant growth, yield, and plant nutrient content of lettuce grown under different irrigation levels. Field experiments were carried out as split plot based on randomized complete block design with three rep...