Hülya Sayğı

Dr. Hülya Sayğı

Cukurova University, Adana, Turkey (Türkiye)
orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 May 2022 in Agronomy
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HSHülya Sayğı
Hülya Sayğı
In the agricultural production process, the production and environmental costs of chemical fertilizers used to increase yield and quality and the question of how to evaluate the herbal and animal wastes that arise in the agricultural production process are important issues. The main purpose of using herbal and animal wastes that arise in the agricultural production process as an alternative fertilizer to chemical fertilizers is to reduce production costs and to ensure sustainability in agricultural production by reintroducing these wastes to the economy. In this study, the effects of vermicompost, chicken manure, farm manure, and chemical fertilizers on product yield and quality, plant nutrients, and economic profitability in strawberry cultivation were investigated. In the study, strawberries were used as the plant material and vermicompost, chicken manure, farm (cattle) manure, and chemical fertilizers were used as plant nutrition materials. In the study, statistically significant differences were found in the parameters of yield, quality, plant nutrient content in leaves, and economic profitability compared to chemical fertilizers. In terms of product yield and some quality parameters, organic fertilizers (worm manure and chicken manure in yield, total sugar and nitrate accumulation in fruit, chicken manure in vitamin C) gave better positive results than chemical fertilizers. In the macronutrient content of the leaves, chicken manure in terms of nitrogen and phosphorus; vermicompost, chicken manure, and farm manure in terms of potassium; and vermicompost and chicken manure in terms of calcium all gave better results than chemical fertilizers. In the micronutrient content of the leaves, chicken manure in terms of iron, vermicompost in terms of zinc, and chicken manure and farm manure in terms of copper gave better results than chemical fertilizers. In terms of economic profitability, while more profit was obtained from vermicompost, chicken manure and farm manure applications compared to chemical fertilizer applications, the highest profitability was obtained from vermicompost application. The findings of this study support the idea that vermicompost, chicken manure, and farm manure can be recommended as an alternative plant nutrition input to chemical fertilizers in strawberry cultivation.

27 October 2023 in Horticulturae
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HSHülya Sayğı
Hülya Sayğı
Drought is one of the leading abiotic factors limiting morphological and physiological activities in blackberry cultivation. In this study, the effects of silver nanoparticles (AgNPs) on some morphological and biochemical processes in boysenberry (Rubus ursinus Chamisso and Schlenhtendal) under drought stress were investigated. The experiment was performed with three drought stress levels simulated with Polyethylene Glycol (PEG) (0, 4, 8%) and three AgNP treatments (0, 0.1, 0.2 mg L−1) in vitro conditions. Drought stress reduced root and shoot development of boysenberry plants grown in vitro. The addition of AgNPs significantly alleviated the adverse effect of drought stress and increased the plant growth parameters. Antioxidant activity of superoxide dismutase (SOD) and catalase (CAT) enzymes increased in boysenberry leaves when treated with AgNPs under drought conditions, while the amount of malondialdehyde (MDA) decreased. As a result of the study, 0.1 mg L−1 AgNPs is recommended as the most effective dose to promote the growth and development of in vitro boysenberry plants under drought stress.

2 November 2023 in Sustainability
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HSHülya Sayğı
Hülya Sayğı
CDCanan Nilay Duran
Canan Nilay Duran
The aim of the study is to determine the effectiveness of nano-silicon dioxide (NaSiO2) application on the tolerance of strawberry plants exposed to drought stress under in vitro conditions. Drought stress was induced with polyethylene glycol (PEG-6000). In the experiment, the effects of PEG 6000 concentrations (0, 4, 8%) and NaSiO2 concentrations (0, 50, 100 mg L−1) on in vitro strawberry plants were determined. Plants treated with PEG 6000 showed reduced vegetative growth parameters, but this decrease was reduced with NaSiO2 application. The addition of NaSiO2 enhanced shoot and leaf growth, SPAD index, and the leaf relative water content (LRWC) of in vitro strawberry plants. NaSiO2 at 50 mg L−1 induced the maximum shoot and root fresh weight (1.20 g, 1.24 g, respectively) and length (40.09 mm, 34.26 mm, respectively), leaves number (16.67 pieces/plant) and SPAD index 53.57 among 4% and 8% PEG applications. When the superoxide dismutase (SOD) and catalase (CAT) activities were examined, the results showed that the application of NaSiO2 enhanced drought stress tolerance by promoting certain antioxidant responses by increasing SOD and CAT activities under drought stress. Our results suggest that the application of NaSiO2 can help maintain the devastating impact of drought stress and markedly enhance all the examined parameters in the Albion strawberry cultivar under in vitro conditions.

1 January 2021
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HSHülya Sayğı
Hülya Sayğı
Purpose In this study, the effects of green manure and animal waste on economic of strawberry yield, fruit quality and soil fertility were investigated. Method The experiment was set up with four replicates in a randomized complete block design. The treatments consisted of green manure parcels divided into two parts and green manure + poultry manure slurry were given to one part, and the other part was not applied complete. Seed planting was carried out in the first year of the experiment (2015) while strawberry plants were removed during the second year (2016) and the seeds of green manure plants were planted. Sofa hispida [Soja] and Vigna sinensis [Cowpea] plants were mown and mixed into the soil when they were in bloom. Results The results from the study shows that the yield realized from control plot during first year was between 10.68 and 22.33 t ha(-1), second year yield was between 8.81 and 23.39 t he and third year was 10.68 and 16.98 t ha(-1). After harvest, soil organic matter content increased by 12% in the first year and 5.10% in the second year in green manure + poultry manure slurry application, the total nitrogen content increased by 75% in the first year and 10% in the second year. In the fruit, it gave higher content of Vitamin C and nitrate level. Conclusion From our findings, it was discovered that green manure and poultry manure slurry gave better results in terms of fruit yield, quality, soil fertility and economy.
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12 June 2023 in Sustainability
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HSHülya Sayğı
Hülya Sayğı
In terms of sustainable economic activities, environmental and production costs of plant nutrition material in agricultural production and wastes that harm the environment, humans and living beings are two important problems. This study, which combines these two problems into a common denominator, aimed to obtain plant nutrition input with low environmental and production costs by using the wastes generated during the domestic consumption process in strawberry cultivation. Municipal solid waste compost (MSWC) for plant nutrition input and an Albion strawberry variety as a trial plant were used as research materials. In the study, where the random block trial design method was used, the effects of MSWC on plant growth, fruit quality characteristics and plant nutrient parameters were investigated. According to the results of the study, it was concluded that the examined parameters (number of fruits per plant, fruit weight, fruit taste, macro and micronutrient content in plant leaves) were positively affected according to the rate of use of MSWC. In the parameters evaluated within the scope of the study, 4 tons of MSWC applications in fruit weight, stem number, root length, plant width, leaf area, K and Ca parameters; 1.2 tons of MSWC applications in the number of fruits per plant and TA parameters; all MSWC applications in fruit yield per plant, pH, plant height, N, Mn and Cu parameters; 2 tons of MSWC applications in the TSS parameter and 1, 2 and 4 tons of MSWC applications in P and number of leaves per plant parameters gave better results compared to the control. Research findings support the idea that the use of MSWC as a plant nutrition input will provide both the production of plant nutrition input with low environmental and production costs and the prevention of the harms of waste to the environment, humans and living creatures.

7 September 2023 in Preprints.org
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HSHülya Sayğı
Hülya Sayğı
Drought is one of the leading abiotic factors limiting morphological and physiological activities in blackberry cultivation. We investigated the effect of silver nanoparticles (AgNPs) on morphological and physiological processes in the boysenberry crop (Rubus ursinus Chamisso & Schlenhtendal) under drought stress. The experiment was performed with three drought stress levels (0% PEG, 4% PEG and 8% PEG) and three AgNPs treatments (0, 0.1, 0.2 mg L−1) invitro conditions. The results showed that drought stress induced by PEG, reduced root and shoot development of boysenberry plants grown invitro. The addition of AgNPs is significantly alleviated the adverse effect of drought stress and increased the plant growth parameters. Antioxidant activity of SOD and CAT enzymes increased in boysenberry leaves when treated with AgNPs under drought conditions, while the amount of MDA decreased. Therefore, the results obtained in this study suggest that 0.1 mg L-1 AgNPs added to the medium improve the growth and development of invitro boysenberry plants under drought stress.