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Increasing Rice Yield in Demonstration Plots Using Bio-Soil: Somdetpittayakom School, Somdet District, Kalasin Province
Organization(s):Somdetpittayakom School
Country:Thailand
Student(s):Mr. Wattanachai Rachmontian, Miss, Chanapat Choopan,
Miss Jariya Nasathit, Miss Warisara Lmpool, Mr. Kritiwit Ritchai,
Mr. Natthaphong Kaewmuang, Miss Nathaporn Wutti
Miss Ployrung Kanna, Mr. Prakasit Jaboon,
Miss Kanyanut Sapa, Miss Chananya Kinaseeta,
Miss Siwaporn Kaewsangsee
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Member(s):Prakaikham Thesarin
Contributors:Miss Prakaikham Thesarin,
Miss Sasikarn Pannorat
Report Type(s):Virtual Science Symposium Report
Protocols:Soil Fertility, Soil Characterization, Soil pH, Soil Temperature
Presentation Video:
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Presentation Poster:
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Language(s):English
Date Submitted:2026-01-30
The objectives of this research were: 1) to study the properties of planting soil mixed with bio-fertilizer, and 2) to compare rice yields from soil mixed with bio-fertilizer The study was conducted at a 784-square-meter demonstration rice field at Somdetpittayakom School, Somdet District, Kalasin Province. The research methodology followed the GLOBE Protocol to investigate soil color, texture, temperature, moisture, pH, and fertility, with data recorded in the Data Entry system
The results indicated that soil mixed with coffee grounds and cow manure was dark brown and clumpy, with a temperature of 33 degrees Celsius, a pH of 5, and high levels of N, P, and K Regarding rice yield comparison, rice grown in soil mixed with coffee grounds and cow manure showed an average height of 189 cm, an average leaf length of 96 cm, and an average circumference of 8 cm. This group produced larger stems and leaves and achieved a higher yield of 33 seeds per panicle. The seeds were larger and heavier; specifically, a standard weight of 1 gram contained only 30 seeds. In comparison, the seed counts per 1 gram for rice grown in soil mixed with coffee grounds, soil mixed with cow manure, and non-mixed soil were 34, 33, and 35 seeds, respectively