
Welcome to CLSU Granarium
A digital institutional repository of the Central Luzon State University community. It is for management, dissemination, and preservation of digital materials that represent the scholarly works of CLSU.
'Granarium' from the Latin word meaning "storehouse for grains" symbolizes a repository of valuable intellectual outputs produced by CLSU's faculty, staff, students, and partners.
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Recent Submissions
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Rogie boy
(2025) Roggie boy
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Modified rabbitry structure equipped with micro-climatic monitoring and automated misting system
(2023) Xaviery D. R. Caluya and Resty V. De Leon
This study aimed to enhance existing rabbitry structures by implementing a micro-climatic monitoring and misting system. The effectiveness of the modified structure and monitoring system was evaluated by assessing the rabbit's body weight gain and feed conversion ratio. Twelve New Zealand White Rabbits, aged 35 days, were selected as subjects, with six housed in the modified structure with the misting system and the other six placed in bamboo cages. Both types of housing were equipped with micro-climatic sensors to measure temperature, relative humidity and ammonia levels. Data was collected and analyzed over a nine-week period.
Results showed that rabbits in the modified structure exhibited an average body weight gain of 1285 grams, while those in the bamboo cages averaged 1042.5 grams. The feed conversion ratio was 3.61 in the modified structure, compared to 4.49 in the bamboo cages. The modified rabbitry structure demonstrated a23% higher body weight gain and a 24% better feed conversion ratio than the bamboo cages. Additionally, the modified structure maintained a temperature difference of 1 to 3 degrees Celsius compared to the bamboo cages, with relative humidity ranging from 70% to 82%, in the modified structure and 50% to 75% in the bamboo cages. Ammonia level peaked at 4.2 ppm in the modified structure and 8.2 ppm in the bamboo cages.
These findings highlight the positive impact of the modified rabbitry structure with the micro-climatic monitoring and misting system on rabbit performance. The rabbits exhibited improved body weight gain and feed conversion ratio, indicating enhanced growth and resource utilization. The controlled temperature and humidity levels in the modified structure provided a more favorable environment for the rabbits' well-being, while lower ammonia levels suggested improved waste management.
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Performance evaluation of a Plastic Mulch Laying Implement
(2023) Wave Nher G. Gomez
The study was carried out to evaluate the performance of a plastic mulch laying implement attached to a hand tractor. Specifically, varying tilt angle ( 15°, 25°, 35°) of the wheel mulcher for laying the plastic mulch was done to determine the optimum mulching efficiency, draft force, power requirement, field capacity wheel slippage and bed height.
Results of the study showed that setting the tilt angle of the wheel mulcher at 35°, field efficiency of 82.70% and field capacity of 0.2691 ha/hr were recorded the highest compared to the results obtained from 15° and 25° tilt angles. On the other hand , the lowest draft force of 110.89 kg and power requirement of 63.74kW were also obtained using the tilt angle of 35° . Results also revealed that setting the tilt angle of the wheel mulcher at 15° , it was found out that a 161.61 kg draft force and 69.95 kW power requirement, was the highest observed values compared to the values obtained from using 25° and 35° tilt angles. In terms of the bed height, results revealed that at 35° tilt angle, the lowest bed height was observed at 13.03 cm and the highest bed height of 19.03 cm was attained at tilt angle of 15° . In terms of width and thickness of soil cover, it shows that the tilt angle (35°) produced the lowest values at 20.47 cm and 7.23 cm and the highest values were attained using a tilt angle of 15° observed at 35.10 cm and 14.50 cm, respectively.
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Multipurpose Grating Machine
(2023) Vianca Mae C. Muncal
In this study, a multi-purpose grating machine has been developed, and its performance has been evaluated and analyzed. The machine was designed for multi-commodity grating, high throughput capacity. easy assembly, and disassembly and reduction of grating time. The performance evaluation of the grating machine was conducted to establish its capacity, efficiency, power consumption, size reduction and distribution based on the Philippine Agricultural Engineering Standard for the multi-crop grater. A belt and pulley combination design was adopted as primary powers transmission mechanism.
Using a 5 mm abrasive hole size, the grating capabilities for turmeric and bamboo shoots were found to be 30.13 kg/hr and 22.24 kg/hr,. resoectively. Grating efficiencies for turmeric and bamboo shoots were found to be 92.62% and 84.72%, in average respectively. The energy consumption were measured to be 0.1167 KW-hr and 0.2478 KW-hr per kilogram of turmeric and bamboo shoots, respectiovely.
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Automated Granular Fertilizer Dispensing Machine for Drip fertigation System
(2023) Trishia Maeve U. Agustin, Ricardo M. Caburnay Jr., and Keith Matthew P. Carlos
The increasing demand for efficient water and nutrient management in agriculture has prompted the adoption of innovative technologies such as drip fertigation. the study was conducted to design and evaluate an automated drip fertigation system equipped with a precision granular fertilizer dispensing machine. Due to their availability and cost-effectiveness, the machine was designed to utilize granular fertilizers in the fertigation system. It focused on automating the mixing and dispensing of fertilizers through an automated control system allowing the users to input specific parameters, such as fertilizer amount and fertilization date, enabling precise and timely nutrient applications. The machine's performance was evaluated by comparing the actual output of the dispensed fertilizer from the machine to the desired output specified by the user, the fertigation distribution uniformity, and the assessment of the fertilizer concentration delivered by the system. the automated system consists of a user interface, where users can input parameters such as fertilizer amount and a control system that automates the fertigation process. The system performance evaluation indicates that the system can effectively deliver the required amount of fertilizer with minimal marginal error of 2.59%. The machine has a 97.4% dispensing efficiency. However, a more uniform fertigation distribution and a higher nutrient concentration in the middle of farthest sections of the plots were observed. In contrast, the upstream sections had the lowest distribution uniformity and nutrient concentration.