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Evaluation of the response of some lettuce cultivars to growth, production, and quality indicators using hydroponic systems

AMAN IDELBE
LDepartment of Rural Engineering, Faculty of Agricultural Engineering, Damascus University, Syria
HASSAN OBEAD
LDepartment of Horticultural sciences, Faculty of Agricultural Engineering, Damascus University, Syria
REYAD BALADIAH
LDepartment of Rural Engineering, Faculty of Agricultural Engineering, Damascus University, Syria

Abstract:

The research was conducted at Abi Jarsh Farm in the Faculty of Agricultural Engineering at Damascus University during the first season of 2020-2021 and the second season (experi- mental repetition) of 2021-2022. The experiment aimed to study the evaluation of growth, production, and quality indicators for two lettuce varieties, Romaine and Iceberg, within various hydroponic techniques: Nutrient Film Technique (NFT), Drip System Technique (DST), Deep Water Culture (DWC), and using three different concentrations of nutrient solutions (100%, 50%, 25%). The results of the analysis of variance, according to chemical analyses, showed that the average of the Romaine variety had the highest percentage in the Carotenoids pigment estimation index for lettuce leaves compared to the Iceberg variety. Additionally, the Romaine variety recorded the highest percentage in the Total Soluble Sol- ids (TSS%) estimation index for lettuce leaves compared to the Iceberg variety. Meanwhile, the results of the variance analysis, according to physical tests, indicated that the average of the Iceberg variety had the highest percentage in the number of leaves compared to Ro- maine, while the Romaine variety recorded the highest value in the indicator of the total green length and inner stem

Keywords : cattle, milk, production systems, technological model. ,University of Santo Tomas ,
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Myanmar High School Students’ Perceptions of College and International Readiness in Western Society

Mark Speckien
Louisiana Tech University
Mark Speckien
Louisiana Tech University

Abstract:

International students are more likely to experience mental health issues and increased stress. Mental health is often surrounded by negative societal stigmas that act as barriers to seeking support and tend to lead to greater mental health concerns. International students tend to seek socioemotional support from other international student peers rather than seeking out counseling services. However, this study shows that LGBTQIA+ international students were less likely to seek socioemotional support from other international student peers due to fear of their sexual orientation being discovered and their families finding out about their identity. This study examines how LGBTQIA+ international students talk about their experiences on and off campus in relations to their socioemotional well-being. Specifically, this study sought to better understand the complexities of LGBTQIA+ students’ identities, and the challenges they faced in terms of their socioemotional well-being. Implications for practice and future research are discussed.
Keywords : international students, socioemotional well-being, mental health, identity development, intersectionality, LGBTQIA
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