The results showed the level of soil fertility in the area of secondary forests is low, whereas in the area of bush and grasslands are relatively high. Research objectives were to determine the level of soil fertility and land suitability for crop sengon jabon mahoni and kemiri in the area of ex PT. Therefore, before planting, land suitability assessment should be performed and the level of soil fertility on the location to be planted, so that high planting success. There is a fact that not all types of plants can live and thrive in a particular area. Buku_3_2008_kesuburan tanah.pdfĮcological aspects such as soil fertility and land characteristics is one important factor affecting plant growth or on the kinds of trees to be cultivated., Moreover, for an alien tree species to new areas.
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