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Undergraduate Theses

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14578/5

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Degree: search.filters.degree.Bachelor of Science in Agricultural and Biosystems EngineeringSDG: search.filters.sdg.SDG 2 - Zero hunger

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    Growth and yield of lettuce under Kratky hydroponics using coco peat mixed with charcoal and oyster shell as growing media
    Cañedo, Ranel A. (Davao del Sur State College, 2024-06)
    A study was conducted in March in sitio Balutakay Managa, Bansalan, Davao del Sur to investigate the growth and yield of lettuce using Kratky hydroponics. The growing media consisted of cocopeat mixed with charcoal and oyster shell. This study employed a Completely Randomized Design (CRD) consisting of three (3) treatments and five (5) replications. Specifically, the purpose of this research was to identify the growth and yield of lettuce under Kratky hydroponics using cocopeat mixed with charcoal and oyster shell as growing media in terms of plant height, number of leaves, root length and yield. In terms of plant height, treatment 1 (87.5% (266 g) cocopeat, 7.5% (22.8 g) charcoal, 5% (15.2 g) oyster shell) had the highest mean height with (20.240 cm) while treatment 2 (82.5% (250.8 g) cocopeat, 7.5% (22.8 g) charcoal, 10% (30.4 g) oyster shell) had the lowest mean height with 19.508 cm. In number of leaves, treatment 1 (87.5% (266 g) cocopeat, 7.5% (22.8 g) charcoal, 5% (15.2 g) oyster shell) had the highest number of leaves with (14,000 cm). In root length, treatment 2 (82.5%), (250.8 g) cocopeat, 7.5% (22.8 g) charcoal, 10% (30.4 g) oyster shell) had the highest mean root length with (20.624 cm) while treatment 3 (77.5%) 5.6 g) cocopeat, 7.5% (22.8 g) charcoal, 5% (15.2 g) oyster shell) had the highest mean plant yield with (0.121 kg) while treatment 2 (82.5%), (250.8 g) cocopeat, 7.5% (22.8 g) charcoal, 10% (30.4 g) oyster shell) had the lowest mean of (0.109 kg).
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    Estimation of potato (Solanum tuberosum) evapotranspiration using blaney-criddle method in Sitio Gagpang, Brgy. Alegre, Bansalan, Davao del Sur
    Dico, Joshua Cedrick (Davao del Sur State College, 2024-01)
    This research study aimed to estimate potato (Solanum tuberosum) evapotranspiration using the Blaney-Criddle method in Sitio Gagpang, Brgy. Alegre, Bansalan, Davao del Sur. The study collected temperature data from February to April 2022 and computed the reference evapotranspiration (ETo) and crop evapotranspiration (ETc) across different growth stages of the potato crop. Results show that the mean monthly temperature in the study area is suitable for potato planting, falling within the range of 15 to 20 C. The study also found that potato plants require significant water, and the computed ETo values of 5 mm/day, 4.98 mm/day, and 5.1 mm/day were within the range of water requirements for potato cultivation. Furthermore, the ETc of the potato crop varied across its growth stages, with the highest ETc in the reproductive stage. The findings can guide farmers in managing their irrigation practices and maximizing crop yields. Future studies may continue the investigation to the months beyond April or explore other irrigation systems that could be implemented in the study area. Overall, this study provides valuable information on potato crop evapotranspiration rates in Sitio Gagpang, Brgy. Alegre, Bansalan, Davao del Sur, and can aid in improving potato farming practices in the study area.
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    Nutritional and sensory attributes of banana coffee produced from cavendish banana (Musa cavendishii) flesh at different maturity stage
    Itang, Kris Caresza Kate C. (Davao del Sur State College, 2024-06)
    This study was conducted to utilized and process rejected cavendish banana fruits into coffee. Sensory evaluation (Aroma, Texture, Color, and General Acceptability), Nutritional Analysis (Protein, Fat, Fiber, Ash, and carbohydrates), and Microbial Analysis in terms of bacterial and fungi count were performed to assess the quality and characteristics of the banana coffee and were analyzed using T-test. In the overall rating, T2 got higher mean rating percentage of Aroma (3.26%), Texture (4.2%), Color (4.106%), and the General Acceptability parameter with 3.36%. For proximate analysis, T1 got higher content percentage in terms of protein (3.742%), Fiber (2.21%), and Ash (5.5%), and T2 for carbohydrates (86.8%) and Fat (5.6%). In microbial analysis, both treatments got equal bacterial count (total plate count) of <1.1 cfu/g however, T2 contained less yeast and molds count (fungi count) of 4.7 x 10 (2) cfu/g present in the composite sample. Based on the T-test result, only aroma difference was not statistically significant while texture, color, and general acceptability showed significant difference. Hence, this study still needs more modification in order to enhance the quality of processing cavendish banana into coffee.