Papers by John Paul D . Galvan
Journal of Biodiversity and Environmental Sciences (JBES), 2022
This study investigates the influence of magnetic treatment on the growth and yield of lettuce, a... more This study investigates the influence of magnetic treatment on the growth and yield of lettuce, as measured by plant height, the number of leaves per plant, leaf length, leaf area, root length, and fresh weight. The collected data were compiled and statistically analyzed using Analysis of Variance arranged in Randomized Complete Block Design (RCBD) configuration with four treatments repeated three times. The least significant difference (LSD) test was used to determine differences between treatment means. The use of magnetized water in a hydroponic system significantly increased the parameters of growth performance (height, leaf area, leaf length, root length, and fresh weight) of lettuce. Further, the number of leaves per plant, plant height, leaf length, leaf area, and fresh weight increase as the number of magnets increases. These results implied that magnetic water technology applied in hydroponics could help increase crop growth and yield performance with less water.
International Network For Natural Sciences | INNSPUB, 2021
Magnetic water treatment and hydroponics system, as two distinct technologies, has shown remarkab... more Magnetic water treatment and hydroponics system, as two distinct technologies, has shown remarkable results in enhancing crop growth and yield. The combination had somehow shown promising results; however, literature is still limited. This study determined the growth and yield performance of pechay as influenced by magnetic water treatment in a hydroponics system. Magnetization was done using a varying number of permanent magnets. Based on the result, a positive effect was observed for all the parameters considered. Notably, an increase of 24.7% in height, 30% in the number of leaves, 18.56% in leaf length, 47.93% in leaf area, 46.50% in root length, and 34.97% in fresh weight against the control. The results suggest that the application of magnetic fields on the nutrient solution in hydroponics systems could further enhance crop production and could be applied for practical use.
Mindanao Journal of Science and Technology, Dec 14, 2021
Zenodo (CERN European Organization for Nuclear Research), Jul 30, 2021
The motorized coconut dehusking machine was designed using AutoCAD and made of locally available ... more The motorized coconut dehusking machine was designed using AutoCAD and made of locally available materials using local manufacturing technology and tested to evaluate its performance in terms of dehusking capacity, de-husking efficiency, percent nut damage and energy consumption at different angular speed of dehusking rollers and nominal diameter of nuts; three levels of dehusking roller’s angular speeds (50 rpm, 60 rpm and 70 rpm) and three levels of nuts’ nominal diameters (178 mm, 212 mm and 248 mm) were used. The study was laid-out in two-factorial experiment in randomized complete block design. The performance evaluated in terms of dehusking capacity, de-husking efficiency, percent nut damage and energy consumption at different angular speeds of dehusking rollers and different nominal diameters of nuts indicated that the dehusking capacity was dependent on the angular speed and nominal diameter of coconut as well as their interaction. A dehusking capacity of 271 nuts per hour w...
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Papers by John Paul D . Galvan