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  • [ X ]
    Öğe
    Chemical weed control strategies for sweet corn in Tükye'ris diverse production areas
    (Tubitak Scientific & Technological Research Council Turkey, 2025) Arslan, Zubeyde Filiz; Uludag, Ahmet; Gungor, Huseyin; Tas, Timucin; Aydin, Emine; Williams, Martin M., II
    Sweet corn production in T & uuml;rkiye is failing to match growing demand from consumers and the food industry. Weeds severely limit sweet corn production, yet only a single herbicide is registered in T & uuml;rkiye. Due to labor costs, hand weeding is no longer affordable and growers are demanding cost-effective weed control strategies for sweet corn production. Nine treatments including preemergence (PRE) and/or postemergence (POST) herbicides were tested across the country's diverse growing environments. Compared to the weedy control, all treatments increased the number of marketable ears. Only two treatments-s-metolachlor plus terbuthylazine followed by isoxaflutole plus cyprosulfamide plus theincarbazone-methyl and dimethenamid followed by mesotrione plus nicosulfuron-provided consistent late-season weed control and fully protected crop yield. This study quantifies the value that additional herbicide registrations in T & uuml;rkiye could have for controlling problematic weeds in the country's sweet corn production.
  • [ X ]
    Öğe
    Effect of black mulberry (Morus nigra) extract treatment on cognitive impairment and oxidative stress status of d-galactose-induced aging mice
    (Taylor & Francis Ltd, 2016) Turgut, Nergiz Hacer; Mert, Derya Guliz; Kara, Haki; Egilmez, Hatice Reyhan; Arslanbas, Emre; Tepe, Bektas; Gungor, Huseyin
    Context: Morus nigra L. (Moraceae) has various uses in traditional medicine. However, the effect of M. nigra on cognitive impairment has not been investigated yet. Objective: The objective of this study is to determine the phenolic acid content and DNA damage protection potential of M. nigra leaf extract and to investigate the extract effect on cognitive impairment and oxidative stress in aging mice. Materials and methods: Phenolic acid content was determined by quantitative chromatographic analysis. DNA damage protection potential was evaluated on pBR322 plasmid DNA. Thirty-two Balb-C mice were randomly divided into four groups (control, d-galactose, d-galactose + M. nigra 50, and d-galactose + M. nigra 100). Mice were administered d-galactose (100 mg/kg, subcutaneous) and M. nigra (50 or 100 mg/kg, orally) daily for 8 weeks. Behavioral responses were evaluated with Morris water maze. Activities of antioxidant enzymes and levels of malondialdehyde (MDA) were assayed in serum, brain, and liver. Results: In extract, vanillic (632.093 mu g/g) and chlorogenic acids (555.0 mu g/g) were determined. The extract between 0.02 and 0.05 mg/mL effectively protected all DNA bands against the hazardous effect of UV and H2O2. Morus nigra significantly improved learning dysfunctions (p< 0.01), increased memory retention (p < 0.01), reduced MDA levels (p < 0.05), and elevated SOD, GPx, and CAT activities (p < 0.05) compared with the d-galactose group. Discussion and conclusion: These results show that M. nigra has the potential in improving cognitive deficits in mice and that M. nigra may be useful to suppress aging, partially due to its scavenging activity of free radicals and high antioxidant capacity.