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	R^2
Rooting condition (rc)
Coarse material	8.17	Y = 0.0025900x^2 − 0.2568578x + 11.9093576	0.96
Effective depth	8.46	Y = −0.0008354x^2 + 0.29100569x − 1.3957496	0.97
Nutrient retention (nr)
Organic carbon	8.46	Y = −25.492979x^2 + 47.9575089X − 8.9895067	0.97
Nutrient availability (na)
Total N	8.54	Y = −305.5574654X^2 + 155.8690907X − 2.7439640	1.00
K exchangeable	5.58	Y = −10.6697409X^2 + 18.5239943X + 2.3179289	0.95
Erosion hazard (eh)
Slopes	8.54	Y = 0.0183X^2 − 0.9559X + 14.806	0.92
Soil erosion	8.17	y = 0.0000184X^2 − 0.0198647X + 9.0537569	0.89
Land preparation (lp)
Rock outcrops	7.41	Y = 0.0057496X^2 − 0.3845867X + 8.6269785	0.92
Surface rock	7.41	Y = 0.0057496X^2 − 0.3945867X + 8.6269785	0.92