| Title |
Soil fertility analysis for rice production in the lowland areas of Diplahan, Zamboanga Sibugay, Mindanao, Philippines |
|
Authors |
Magdayo Jr., E.D., Guihawan, J.Q., Bacosa, H.P., Olowa, L |
|
Publication date |
2022 |
|
Journal |
International Journal of Agronomy and Agricultural Research |
| Volume |
21 |
| Issue |
2 |
| Pages |
8-19 |
| Abstract |
The most important practice that contributes to rice production is nutrient management. However, if the
nutrient plant required is insufficient, low production is unavoidable. Thus, this study was carried out to
determine the soil fertility status of lowland areas in the municipality of Diplahan. Soil samples from each
sampling site were collected in rice farms using a composite random soil sampling moving in a zigzag pattern.
A depth of 0- 15cm soil samples were collected from 15 - 30 different places in 1-5 hectares. An air-drying
procedure was done before it was carried to the laboratory for final testing. Soil samples were analyzed for pH,
organic carbon, organic matter, nitrogen, phosphorous, and potassium following the BSWM (Bureau of Soils
and Water Management) procedures. Furthermore, a soil fertility map was outlined through ArcGIS software
by plotting local coordinates in Google Map. Results showed that the areas in 10 selected barangays in the
municipality have moderate soil acidity, with a pH level that falls below the desirable range of 5.5 - 7.0 but no
lower than 4.5. According to the results of the soil organic carbon analysis, all barangays have insufficient SOC.
Only four barangays have the optimal soil organic matter content for lowland rice production. The study also
revealed that only two (2) barangays receive an adequate amount of nitrogen, while the rest are considered
deficient. Phosphorous-rich soils were found in two (2) barangays; the five (5) barangays have a medium
content; and the remaining three (3) barangays have a low content. Lastly, no barangay in the municipality
obtains an adequate amount of exchangeable potassium ranging from 82-246 ppm. Problem of insufficient
nutrient requirements for rice crop production is widespread in the municipality. |
| URL |
|
Mindanao State
University - Iligan Institute of Technology