Quantitative Analysis of Soil, Nitrogen, Phosphorus, and Potassium in the Mango Farm of MEFCO, Mati City, Davao Oriental

The study was conducted at the Mango Farm of MEFCO to determine the concentrations of soil nitrogen (N), phosphorus (P), and potassium (K), and the two specific environmental parameters, soil temperature and soil moisture. This was conducted from December 2002 to January 2003. Quantitative analysis of soil nitrogen was determined using Wilde’s Colorimetric Method, soil phosphorus using Modified Olsen Method, and soil potassium using Warm H₂SO₄ Extraction. Moisture content was determined using the percent moisture calculation, and soil temperature was measured with a thermometer. Results showed that the mean available soil nitrogen concentration in the mango farm was 300 ppm. Soil phosphorus concentration ranged from as low as 1 ppm (Stations 1,2 and 3) to as high as 20 ppm (Station 5). The average available phosphorus concentration in the mango farm was 5.6 ppm. Soil potassium concentration in the mango farm was 444 ppm. Soil temperature in the mango farm of MEFCO ranges from 25.4 °C (Station 1) to 26.6°C (Station 2). Average soil temperature was found to be 26.08 °C. Soil moisture content ranges from 1.02 % to 1.04 %, with a mean of 1.03 % Result of the 1-Test for physicochemical parameters, as compared with desirable values and soil sufficiency level, was highly significant. This means that the parameters were found to be lower than the desirable and sufficient value. Environmental parameters, as compared to soil sufficiency and desirable levels, were also highly significant.