KPPSC Soil Conservation Assistant/Officer (BS-17)
The Directorate General of Soil and Water Conservation, Khyber Pakhtunkhwa undertakes crucial interventions across mountainous, piedmont, and rainfed (Barani) regions to prevent topsoil loss, stabilize active gullies, build water storage check dams, and conserve fertile agricultural land.
The appointment of Soil Conservation Assistant / Officer (BS-17) (Advt. No. 02/2026) seeks candidates trained in Soil Sciences or Agricultural Engineering.
KPPSC 45-MCQs Test Outline
The screening paper consists of 45 objective Multiple Choice Questions:
1. Soil Science Fundamentals (approx. 20-25 Questions)
- Soil Physics: Soil texture triangle, particle size distribution (Stokes’ Law for hydrometer analysis), soil bulk density vs particle density, total porosity, water retention curves (field capacity, permanent wilting point).
- Soil Chemistry: Cation Exchange Capacity (CEC), base saturation percentage, pH effects on nutrient availability, reclamation of alkaline and acidic soils.
- Organic Matter Dynamics: Humus formation, role of soil microorganisms, soil aggregate stability against water dispersion.
2. Soil Conservation & Agricultural Engineering (approx. 20-25 Questions)
- Forms of Water Erosion: Splash impact detachment, sheet wash, rill development, and gully progression (stages of gully erosion: initiation, development, healing).
- USLE Equation: Understanding the factors: Rainfall erosivity ($R$), soil erodibility ($K$), slope length and steepness ($LS$), cover management ($C$), and support practices ($P$).
- Structures for Gully Control: Design principles of loose stone check dams, wire-woven gabion spurs, masonry spillways, and chute spillways.
- Terracing Techniques: Level bench terraces, inward sloping terraces, broad-based diversion terraces, and contour trenching for arid reforestation in Southern KP (Karak, Kohat, Lakki Marwat).
- Rainwater Harvesting: Farm ponds, micro-catchment water harvesting, retaining runoff in Barani tract agriculture.
Exam Strategy & High-Scoring Tips
- Formula Inquiries: USLE factors and the Rational runoff equation ($Q = 0.278 \cdot C \cdot I \cdot A$) are frequently queried in both conceptual and calculation form.
- KP Specific Soil Challenges: Familiarize yourself with saline-sodic soils in Southern KP and water erosion hazards in Hazara and Malakand divisions.