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Undergraduate Theses

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

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    Growth and yield performance of loose-leaf lettuce (Lactuca sativa) under greenhouse condition using different levels of ventilation in Barangay Kapatagan, Digos City, Davao del Sur
    Ragomio, Ranel Q. (Davao del Sur State College, 2024-06)
    The study was conducted to evaluate the growth and yield performance of loose-leaf lettuce (Lactuca sativa) under greenhouse condition using different levels of ventilation in Brgy. Kapatagan, Digos City, Davao del Sur. A Complete Randomized Design was used as the experimental layout of the study with 3 treatments replicated 3 times. The treatments used were as follows: Treatment 1 (T1) = Ambient Airflow, Treatment 2 (T2) = 1 Intake Fan and 1 Exhaust Fan and Treatment 3 (T3) = 2 Intake Fans and 2 Exhaust Fans. It was evaluated during 15th, 30th and 40th day after transplanting. Data were statistically analyzed using Single Factorial Analysis of Variance (ANOVA) and Tukey's test was used to identify treatments that are significantly different from each other. The result on analysis of variance (ANOVA), shows that there were significantly difference among treatments in terms of plant height, number of leaves and yield of loose-leaf lettuce. Tukey's test results, revealed that the plant height of loose-leaf lettuce during 15th day after transplanting T1 and T2, T1 and T3 significantly differ from each other while, T2 and T3 has no significant difference. Result also revealed that on 30th and 40th day after transplanting T1, T2 and T3 has a significant difference from each other. In terms on the number of leaves on 15th and 30th day after transplanting Treatment 1 has significant difference against Treatment 2 and Treatment 3. However, Treatment 2 and Treatment 3 have no significant difference from each other. While on 40th day after transplanting results shows that T1, T2 and T3 has a significance difference to each other. In terms on the yield (g) of loose-leaf lettuce, all treatments show that treatment 3 was observed to be the best experimental treatments in all parameters.
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    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.
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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).