Respon morfosiologi rumput toleran dan peka alumunium terhadap penambahan mikroorganisme dan pembenahan tanah

Abstract

Umumnya lahan yang digunakan untuk penanaman hijauan makanan ternak adalah Tahun kelas IV ke atas yang merupakan lahan-lahan merjinal dengan pH masam. Jenis tanah masam yang paling luas di Indonesia adalah tanah podzolik merah kuning meliputi 10% luasan daratan Indonesia.

Most of the pasture land are classified as the fourth land capability class, considered as marginal, acid of Red Yellow Podzolic (RYP) soil. This type of soil covers 30% of Indonesian land. Most important problem faced on RYP soil includes, 1) high concentration of H', Al, Fe and Mn, 2) low available nutrient elements of P, N, K, Са, Mg and Mo, 3) inhibit the growth of plant roots, the absorption of moisture and nutrients. There are four classic steps to solve the problems, i.e. 1) the use of soil conditioners, 2) use of tolerant grass species, 3) improvement of soil microorganisms, such as inoculation of AMF (Arbuscular Mychorrhizal Fungi), Phosphates Solubilizing Bacteria (PSB), and Azospirillum (N-fixing bacteria).