Table 16 Criteria (reclassification) for land suitability of wheat crop in Ambesh watershed
Land Quality | Land characteristics | Unit of measurement | Suitability class | |||
|---|---|---|---|---|---|---|
Highly Suitable (S1) | Moderately Suitable (S2) | Marginally Suitable (S3) | Not Suitable (N) | |||
Climate | Temperature (t) | ℃ | 15–20 | 13.74–15.20 | 22.5- 25 |  < 13, > 28 |
Rain fall (rf) | mm | 908.1–1200 | 1200–1283 | 1283–1401 |  > 1401 | |
Topography | Altitude (alt) | masl | 2000–2600 | 2600–3000 | 3000–3300 |  < 1500; > 3300 |
Slope (s) | degree | 0–4.3 | 4.3–7.6 | 7.6–11.7 | 11.7–25.45 | |
Physical soil properties | Soil texture (txr) | css | CL | C | SiL, L | S |
Soil structure (str) | Â | VF, F | F | M | C | |
Soil depth (dp) | cm |  > 100 | 50–100 | 20–50 |  < 20 | |
Chemical soil properties | Organic matter | % | 4.1–5.1 | 3.3–4.1 | 2.7–3.3 | 1.5–2.7 |
Ele. conductivity | µs/cm | 14.7–35.1 | 35.1–71.3 |  |  | |
Soil pH:H2O | H2O | 5.5–5.8 | 5.1–5.5 | 5.0–5.1 | 4.6–5.0 | |
CEC | meq/100 g | 29.9–31.42 | 29.3–29.9 | 28.76–29.3 | – | |
Total N | % | – | – | – | 0.085–0.285 | |
Phosphorous (P) | ppm | – | 13.1–13.5 | 12.8–13.1 | 12.5–12.8 | |
Potassium (K) | ppm |  |  | 0.56–0.577 |  | |
CaCO3 | % | 20.3–21.7 | 21.7–22.4 | 22.4–23.1 | 23.1–24.2 | |