Davao del Sur State College Institutional Repository
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Recent Submissions
Processing of cacao by-products and corn bran as feed pellet for rabbit
Calamba, Elsie O. (Davao del Sur State College, 2024-06)
The study was conducted to determine the cacao by-products and corn bran as feed pellet for rabbit. It was conducted to determine the nutrient content kilogram of cacao placenta meal, cacao pod husk, cacao bean shell and corn bran, durability, bulk density and cost to produce a kilogram of feeds. Completely Randomized Design were used in the study with three treatment and three replications. Moreover, the study utilized carboxymethyl cellulose as binder for feed pellet. The study's results and findings indicate that the crude protein levels fell within an acceptable range across treatments. However, the crude fiber content was notably higher compared to that typically seen in rabbit feed, as well as the ash content. Additionally, the durability showed significant difference between Treatment 1 and Treatment 2, with Treatment 3 displaying a highly significant difference among treatments. Bulk density also showed significant differences among treatment. Moreover, the cost to produce a kilogram of feed was found to be minimal than the market price of rabbit pellets.
Water consumption and growth of pechay in Kratky method at different depth level of nutrient solution under shaded condition
Canon, Kirby S. (Davao del Sur State College, 2024-05)
Green crops are currently cultivated using a hydroponic method. However, the production cost is quite expensive due to the higher cost of commercial nutrient solutions. The purpose of the thesis study was to explore the possibility of reducing the quantity of nutrient solutions and their impact on the growth of pechay. The study was carried out using a Completely Randomized Design (CRD) with three treatments replicated three times. T1 (2 inches depth), T2 (3 inches depth), and T3 (4 inches depth). The collected data were analyzed using a One-Way Analysis of Variance (ANOVA) at a significance level of 5%. The Least Significant Difference (LSD) test was employed to ascertain the variations between the different treatments. The analysis indicated that the treatments revealed significantly varied in root length with a P-value of 0.0010. Further, the analysis indicates that there is no statistically significant difference in terms of mean daily water consumption, plant height, number of leaves, breadth of leaves, plant yield, mean daily difference temperature nutrient solution, and mean daily difference pH level, as indicated with P-values of 0.03272, 0.3787, 0.4376, 0.3787, 0.0727, 0.2997, and 0.4029 respectively.
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).
Evaluation of magnetized miracle fruit (Crescentia cujete) peel ash in the adsorption of methylene blue at different dosage
Calledo, Carol Joy A. (Davao del Sur State College, 2024-08)
This study evaluated the magnetized miracle fruit peel ash (MMFPA) as an efficient methylene blue adsorbent. The effect of dosage (0.5 g, 1 g. 1.5 g, 2 g, 2.5 g, and 3 g) was studied to determine the equilibrium concentration, equilibrium adsorption capacity, and removal efficiency of the adsorbent. The experimental data was analyzed using the One-way ANOVA at 1% and 5% level of significance. The treatment means was compared using the Tukeys's Honest Significant Difference (HSD) test. Based on the result in the equilibrium concentration, Dosage Six (D6) had the lowest equilibrium concentration at 0.7997 ppm. In relation to the adsorption equilibrium capacity, D6 had the lowest equilibrium adsorption capacity at 1.64 mg/g. In the removal efficiency, D6 exhibited highest removal efficiency at 98.40%, showing a substantial decrease in the concentration in methylene blue. In general, this study concluded that magnetized miracle fruit peel ash demonstrated a high potential as an economical alternative for treatment of dye contaminated wastewater.
Strength analysis of bioplastic made from cardava banana peel starch reinforced with different chitin-based material
Ordaneza, Angel Mae C. (Davao del Sur State College, 2024-06)
This study conducted to evaluate the flammability, biodegradability, and tensile strength of the bioplastic made from cardava banana peel starch and different chitin-based material. The experimental samples were laid in complete randomized design (CRD) with three treatments, namely; T1 (Commercial), T2 (Eggshell) and T3 (Golden Apple Snail Shell) and each was replicated three times. The data gathered was analyzed using One-way ANOVA and LSD at 5% level of significance. Based on the result, T3 has the highest mean flammability and biodegradability value of 3.35 mm/sec and 77.04% respectively, followed by T2 (3.09 mm/sec and 66.62%} and T1 (2.74% mm/sec and 20.39%) that has the lowest mean flammability and biodegradability value. Acid solubility results revealed that Treatment 1 has the highest acid solubility with the value of 7.53% followed by Treatment 2 with 6.8% and Treatment 3 with 5.76% that has the lowest acid solubility. In the tensile strength, Treatment 2 has the highest tensile strength with the value of 7.12074 MPa followed by T3 (6.8932 MPa) and T1 (5.87459 MPa) which has the lowest tensile strength value. The ANOVA results revealed that there's a highly significant difference in the flammability and biodegradability among the means of the three treatments. In general, the results revealed that different chitin-based materials (particularly eggshell and golden apple snail) and cardava banana peel starch can be used to make bioplastics given that they exceed the flammable standard, have excellent biodegradability, low solubility, and has high tensile strength. Furthermore, it is produced from waste materials, decreasing the threat of environmental pollution.