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Comparison of the physical and chemical properties of soil and the yield of Jasmine rice variety in paddy fields with different irrigation systems and terrain characteristics affecting rice yield in Lamoh Subdistrict, Nayong District, Trang Province
Organization(s):Sawat Rattanapimuk
Country:Thailand
Student(s):Miss Natnicha Srisawang
Miss Mathurada Wunkit
Miss Onuma Muangpoon
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Educator(s):Weerawit Anuntanasin
Contributors:Mrs. Karnrawee Churat : Co-Advisor
Mr. Tullawat Ketvaraporn : Sciencetist
Report Type(s):International Virtual Science Symposium Report
Protocols:Soil Moisture - Gravimetric, Soil pH, Soil Temperature
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Language(s):English
Date Submitted:03/05/2025
This study investigates the physical and chemical properties of soil in the paddy fields of Lamoh Subdistrict, Nayong District, Trang Province. The objective was to study the soil quality in paddy fields characterized by sloping terrain and using water from a recirculating irrigation system. Physical properties such as soil color, soil moisture, light intensity in the soil, and temperature were measured following the soil measurement methods of Pedosphere (Soil) by Golbe. Chemical properties of the soil, such as the pH, nitrogen, phosphorus, and potassium content, were also measured. The results showed that in the lowland area, the soil had a gray color, soil moisture level of 7, light intensity of 1,200 LM, and a temperature of 27.0°C. The chemical properties showed a pH of approximately 8.0, nitrogen content of 7.50%, phosphorus content of 120 mg/kg, and potassium content of 45 mg/kg, yielding 31 sacks (approximately 1,240.00 kg). In contrast, the soil in the hilly area had a brown color, soil moisture level of 7.75, light intensity of 675 LM, and a temperature of 27.0°C. The chemical properties showed a pH of approximately 8.0, nitrogen content of 5.0%, phosphorus content of 55.0 mg/kg, and potassium content of 27.5 mg/kg, yielding 22 sacks (approximately 880.00 kg).
Keywords:
Soil quality, Jasmine rice variety, Recirculating irrigation system, Sloping terrain