Research Article
Determination of Land Suitability Criteria for Maize Hybrid in Boalemo Regency Based on Optimum Yield and Selected Land Quality
Table 7
The optimum hybrid maize yield by the land quality and land characteristics.
| Land quality/land characteristics | Optimum yield (ton/ha) | Yield equation | R2 |
| Rooting condition (rc) | Coarse material | 8.17 | Y = 0.0025900x2 − 0.2568578x + 11.9093576 | 0.96 | Effective depth | 8.46 | Y = −0.0008354x2 + 0.29100569x − 1.3957496 | 0.97 | Nutrient retention (nr) | Organic carbon | 8.46 | Y = −25.492979x2 + 47.9575089X − 8.9895067 | 0.97 | Nutrient availability (na) | Total N | 8.54 | Y = −305.5574654X2 + 155.8690907X − 2.7439640 | 1.00 | K exchangeable | 5.58 | Y = −10.6697409X2 + 18.5239943X + 2.3179289 | 0.95 | Erosion hazard (eh) | Slopes | 8.54 | Y = 0.0183X2 − 0.9559X + 14.806 | 0.92 | Soil erosion | 8.17 | y = 0.0000184X2 − 0.0198647X + 9.0537569 | 0.89 | Land preparation (lp) | Rock outcrops | 7.41 | Y = 0.0057496X2 − 0.3845867X + 8.6269785 | 0.92 | Surface rock | 7.41 | Y = 0.0057496X2 − 0.3945867X + 8.6269785 | 0.92 |
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