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Integrated Application of Organic (PLBC and Biochar) and Inorganic Fertilizers for Sustainable Onion (Allium cepa L.) Production Full text
2025
Humayara Islam | Md. Mamunur Rashid | Md. Mainul Hasan | Md. Mahmudul Hasan | Md. Maniruzzaman Bahadur | Abu Khayer Md. Muktadirul Bari Chowdhury
Excessive use of inorganic fertilizers degrades soil health by disrupting the microbiota, reducing organic matter, and leading to compaction, acidity, and nutrient imbalance. This study aimed at the combined application of organic and inorganic fertilizers as an environmentally friendly approach increasing soil organic matter and crop yields. From January to April 2022, a field experiment was carried out at the Crop Physiology & Ecology Department of Hajee Mohammad Danesh Science and Technology University in Dinajpur to assess the effects of integrated fertilization on onion (Allium cepa L.). Three replications employing a two-factorial Randomized Complete Block Design (RCBD) were performed to set up the experiment. Factor A contained three onion varieties (V1: Taherpuri, V2: BARI Piaz 4, and V3: BARI Piaz 6) while Factor B comprised four fertilization treatments: T1 (RDF + Cowdung @ 5 t ha⁻¹), T2 (RDF + PLBC @ 5 t ha⁻¹), T3 (PLBC @ 15 t ha⁻¹), and T4 (Biochar @ 10 t ha⁻¹). Measurements were made concerning growth traits such as plant height, leaf number, SPAD value, bulb diameter, neck diameter, average bulb weight, and total yield. The findings showed that variety and fertilization provided a significant effect on growth performance, yield and yield traits. Taherpuri (V1), performed better than V2 and V3. The majority of growth and yield traits were most effectively performed by fertilization treatment T2 (RDF + PLBC), which was followed by T1, T3, and T4. Performance appeared lowest for the V3T4 interaction and got maximum for the V1T2 interaction. These results demonstrate that the combination of organic and synthetic fertilizers leads to sustainable onion production.
Show more [+] Less [-]Farklı Depolama Koşullarının Domates Ürünlerinin Bazı Kimyasal Özellikleri Üzerine Etkisi Full text
2025
Zeynep Güler | Derya Alkan
Bu çalışmada iki farklı ev yapımı domates ürününün (kuru domates ve domates sosu) iki farklı depolama sıcaklığında (4°C ve 25°C) muhafaza edilmesiyle oluşan kimyasal değişimler incelenmiştir. Depolamanın 0., 60. ve 120. günlerinde domates ürünlerinin bazı kimyasal analizleri yapılmıştır. Kimyasal analizlerin sonucunda kuru madde ve kül miktarlarının depolama ile azaldığı bulunmuştur. Suda çözünür kuru madde miktarı kuru domates örneklerinde azalırken, domates sosu örneklerinde artmıştır. Kuru domates örneklerinin pH değerleri artış, toplam asitlik değerleri azalış göstermiştir. Bunun aksine, domates sosu örneklerinin toplam asitliğinin depolama ile birlikte arttığı belirlenmiştir. Oda sıcaklığında depolanan kuru domateslerin haricinde tüm örneklerde hidroksimetilfurfural (HMF) miktarları depolama sonunda azalmıştır. Askorbikasit değerlerinin tüm örneklerde depolama ile birlikte önemli ölçüde azaldığı görülmüştür. Likopen miktarındaki azalma özellikle buzdolabı koşullarında muhafaza edilen domates sosları için önemli bulunmuştur. Tüm bulgular gözden geçirildiğinde depolama sıcaklığının kalite özellikleri üzerinde önemli bir parameter olduğu ve sıcaklık etkisinin ürün özelliklerine bağlı olarak farklılık gösterebileceği söylenebilmektedir.
Show more [+] Less [-]Influence of Different Bleeding Times on Structural and Physicochemical Characteristics of Beef from Halal-Slaughtered Cattle Full text
2025
Dilek Ceyda Öztekin | Kezban Candoğan
The bleeding process during slaughter significantly influences meat quality by affecting post-mortem biochemical and structural changes. In this study, the effects of three different bleeding durations (5, 10, and 15 min) during Halal cattle slaughter on the biochemical properties of expelled blood and selected physicochemical, structural, and textural characteristics of beef Longissimus dorsi thoracis muscle were evaluated. Blood loss increased significantly with prolonged bleeding times, with 15 min resulting in the highest bleeding efficiency (p<0.05). Biochemical analyses revealed that total protein and urea concentrations in blood decreased significantly with longer bleeding times, while glucose and lactate dehydrogenase (LDH) levels increased at 10 min bleeding and declined at 15 min bleeding durations. In the beef samples, proximate composition, pH, water activity, and CIE lightness (L*), redness (a*), yellowness (b*), chroma and hue values showed no significant differences between the bleeding durations. However, meat hardness increased significantly (p<0.05) with longer bleeding times, which was supported by scanning electron microscopy (SEM) observations showing more compact and organized muscle fiber structures in samples subjected to 10 and 15 min bleeding in comparison to the 5-min group. Fourier Transform Infrared Spectroscopy (FTIR) further confirmed changes in proteins and nucleic acids associated with bleeding time. The results obtained from this study suggest that a 15-min bleeding duration improves bleeding efficiency and without compromising beef chemical and colour properties. This study highlights the importance of optimizing bleeding duration during Halal slaughter to enhance beef quality and shelf-life.
Show more [+] Less [-]Growth Performance, Meat Quality, and Serum Biochemistry of Broiler Chickens Fed with the Addition of Dietary Cherry Laurel Fruit (Laurocerasus officinalis Roem.) Powder Full text
2025
Canan Kop Bozbay | Esma Barasoğlu | Gamze Yiğit Arpacıoğlu | Emre Turan
Plant feed additives containing bioactive compounds with potential positive effects on poultry health and productivity can be included in poultry diets. This study aimed to investigate the effects of dietary supplementation with cherry laurel fruit (Laurocerasus officinalis Roem.) powder (CLF) on growth performance (body weight, BW; body weight gain, BWG; feed intake, FI; feed conversion rate, FCR), meat quality, and serum biochemistry of broiler chickens. The study included 600 one-day-old mixed-sex Ross 308 broiler chickens, randomly allocated into four treatment groups, each with six replicates of 25 birds. The birds were subjected to treatments consisting of diets supplemented without CLF (control diet, CLF0) or with 2.5 (CLF2.5), 5 (CLF5), and 10 (CLF10) g CLF/kg until 42 days of age. The diets with CLF increased BWG and FI and improved FCR compared to the CLF0 (P<0.05). Carcass yield was higher in the CLF2.5 and CLF5 groups (P<0.05) than in the CLF0 group. Compared to the others, the CLF5 and CLF10 treatments enhanced the water-holding capacity (WHC), and the CLF10 treatment increased the dry matter (DM) content of breast meat (P<0.05). In thigh meat, all CLF treatments increased WHC compared to the control, while CLF100 increased DM content compared to the CLF0 and CLF2.5 treatments (P<0.05). The LDL level was higher in the CLF0 than in the CLF50 group (P<0.05). Overall, dietary supplementation with CLF enhanced broiler chickens' performance and meat quality.
Show more [+] Less [-]Evaluation of Grafting onto Different Rootstocks on Yield and Disease Incidence of Eggplant (Solanum melongena L.) Under Verticillium and Fusarium Wilt Stress Full text
2025
Emine Polat | Naif Geboloğlu
Grafting is an effective strategy for enhancing disease resistance and improving eggplant (Solanum melongena L.) yield under pathogen stress. This study examined the effects of grafting onto different rootstocks in a soilless culture system contaminated with Fusarium oxysporum f. sp. melongenae and Verticillium dahliae. A split-plot experimental design with three replicates was employed to assess disease severity, yield components, and marketable fruit production. Results indicated that grafting onto specific rootstocks significantly increased marketable yield and reduced disease severity. In Verticillium-infected plants, the KingKong F₁ exhibited the highest early yield (2.75 kg plant⁻¹) and marketable yield (5.01 kg plant⁻¹), whereas self-grafted plants had the lowest yield (3.51 kg plant⁻¹). In Fusarium-infected plants, the Hawk rootstock achieved the highest marketable yield (5.20 kg plant⁻¹), representing a 68.28% increase over non-grafted control plants. Disease severity was significantly lower in grafted plants, with Hawk and KingKong F₁ showed complete resistance to Verticillium wilt, while Hawk, KingKong F₁, Anafor F₁, and Hikyaku F₁ exhibited complete resistance to Fusarium wilt. These findings underscore the efficacy of grafting as a sustainable disease management strategy, enhancing eggplant productivity in pathogen-stressed cultivation systems.
Show more [+] Less [-]The Comparison of Different Lactation Curves Models in Damascus Goats Full text
2025
G. Tamer Kayaalp | Nazan Koluman | Gönen Vurana
The shape of lactation curve for Damascus was estimated by fitting a gamma function to daily milk yields from monthly recording of 434 records lactations. The purpose of this study was to examine the models of lactation curve of purebred dairy goats and make some suggestions concerning appropriate mathematical model. R2 values obtained from model ( 3 ) were all greater than those found from other models (Model 1;and 2). Hence model (3) was seen to be superior to other models.
Show more [+] Less [-]Optimization approaches for higher production of single cell protein from Sugarcane Bagasse by Aspergillus niger: Potential Industrial Use and Environmental Management Full text
2025
Muhammad Asif Asghar | Syeda Aliza Raza | Ibadat Jawed Iqbal | Farman Ahmed | Zainab Bibi | Nida Saleem
The global dilemma of waste management and food scarcity require novel solutions that fulfill both environmental concerns and nutritional requirements. To address these significant problems in a sustainable manner, this research investigates the possibility of producing single cell protein (SCP) from sugarcane bagasse, an abundant industrial waste product in the presence of Aspergillus niger strain. The production of SCP was further optimized by inducing variations in Physico-chemical properties to increase the protein yield. These parameters include temperature, pH, fermentation time, inoculum size, carbon and nitrogen sources. The results of this study revealed that A. niger showed maximum production of biomass (24.0±0.02%) at the temperature of 25°C after 7 days of incubation time with the pH adjusted to 5. In conclusion, this multidisciplinary strategy emphasizes how essential biotechnology is to be advancing the idea of how sugarcane bagasse could potentially be used as a beneficial asset to help feed the world's expanding population.
Show more [+] Less [-]Nutrition and Antioxidant Potential of Three Cauliflower (Brassica oleracea L. Var. Botrytis) Cultivars Cultivated in Southern Part of Bangladesh Full text
2025
Mousumi Jahan Sumi | Sharmin Akter Serity | Tusar Kanti Roy | Keya Akter | Shishir Rasul | Mostofa Jaman Depro | Md. Masum Abdullah | Md. Nesar Uddin
This study aimed to evaluate the biochemical and nutritional profiles of three cauliflower cultivars—Valentena, Carotena, and Snow White—focusing on chlorophyll, carotenoids, anthocyanins, vitamin C, flavonoids, phenolics, and antioxidant activity. Uniform curds were harvested at 60 days post-sowing from Baratia, Dumuria, Khulna, and analyzed at Khulna Agricultural University. Valentena exhibited the highest chlorophyll content (40.06±0.39 µg/100g FW chlorophyll a, 28.98±3.35 µg/100g FW chlorophyll b), superior lycopene (8.71±0.38 µg/100g FW) levels. Carotena showed the highest total carotenoid content (60.52±1.76 µg/100g FW) and β-carotene (26.99±0.44 µg/100g FW), while Snow White had the lowest values across most parameters. Valentena also led in anthocyanins (101.56±3.9 mg/L FW) and total flavonoids (79.56±10.36 mg/100g FW), with Carotena having the highest vitamin C content (60.05±2.93 µg/g FW). DPPH assays indicated that Valentena showed the most effective antioxidant (IC50 = 43.65±3.56 mg/mL FW), followed by Carotena and Snow White. Hierarchical clustering and pricipal component analysis (PCA) revealed distinct biochemical profiles: Valentena and Carotena shared similarities in carotenoids and antioxidant activity, whereas Snow White differed significantly. Linear discriminant analysis identified lycopene, chlorophyll b, and β-carotene as major differentiators, highlighting the diverse nutritional and antioxidant properties of these cauliflower varieties. The findings highlight the potential of Carotena and Valentena for health-conscious consumers seeking nutrient-rich, antioxidant benefits in functional meals.
Show more [+] Less [-]Detection of Prunus Necrotic Ringspot Virus (PNRSV) and Apple Mosaic Virus (ApMV) in Rose (Rosa spp.) Plants in Konya Province Full text
2025
Adile Tuğçe Orhan | Serkan Yeşil
This research was conducted to determine the presence of Prunus necrotic ringspot virus (PNRSV) and Apple mosaic virus (ApMV) that can cause infection in rose (Rosa spp.) plants grown in Konya province. For this purpose, field and laboratory studies were carried out in areas where roses are mostly grown for landscaping purposes, and infection rates were calculated with the data obtained. The hypothesis of the study is that roses in Konya province may be infected with PNRSV and ApMV and the presence of these viruses can be determined. In line with this hypothesis, various rose growing areas in Konya province were selected as the research area. During the field studies in 2023, guided sampling was carried out and 94 leaf, branch and flower samples were collected from different rose varieties. The collected samples were tested for determining of PNRSV and ApMV infections by Double Antibody Sandwich (DAS) ELISA method, which is one of the serological testing methods in the laboratory. As a result of the tests, it was revealed that the single infections of PNRSV and ApMV were present in 12 and 11 samples of rose plants in Konya province. The total infection rate of both viruses in the province was calculated as 24.47%. Also, PNRSV+ApMV mixed infections were detected in 2 samples. In this study, the infections of PNRSV and ApMV on roses in Konya province were determined for the first time by serological methods. These results will serve as an important source of information for rose producers and agricultural engineers in the region and will allow the development of strategies to control the spread of viruses and minimize infections.
Show more [+] Less [-]Growing Degree Day Climatology in Aydın, Türkiye Full text
2025
Ercan Yeşilırmak
Plants need to accumalate heat to complete a particular or whole growth period. This accumalation depends on temperature thresholds above or below which plant growth ceases, and on air temperature. It can be speculated that more heat accumulation is available for plants due to rapid warming within three or four decades. This study presents more recent heat accumulation for plants, quantified using a useful index called growing degree day (GDD), for five locations (Söke, Kuşadası, Aydın, Sultanhisar and Nazilli) in Aydın, Türkiye, during the latest climatic normal period from 1991 to 2020. GDD values were calculated both in monthly basis from March through October, and in daily basis from March 1st to October 31st. Monthly GDD averages, as expected, showed a pattern that increased from March to July or August, then decreased thereafter till October. Range and standart deviation showed approximately an opposite pattern, suggesting higher uncertainity in relatively colder months. The results are expected to provide farmers or agricultural practitioners with the latest averages of GDD to predict plant growth and development.
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