Record ID No. |
3994 |
Author(s) |
Hafif, B. Sabiham S. Anas I. Sutandi A. Suyamto , 2012 |
Affiliation |
Lampung Assessment Institute for Agricultural Technology, Jalan Z.A. Pagar Alam No. 1A Rajabasa, Bandar Lampung 35145, Indonesia. Email: bptp-lampung@litbang.deptan.go.id |
Title |
Impact of Brachiaria, arbuscular mycorrhiza, and potassium enriched rice straw compost on aluminum, potassium and stability of acid soil aggregates |
Source. Vol.(no):Page |
Indonesian Journal of Agricultural Science |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Difficult sites |
Host |
Cassava (Manihot esculenta), Brachiaria decumbens |
Organism |
Arbuscular Mycorrhiza (AM) |
Country |
Indonesia, Asia |
Abstracts |
Acid soil is commonly grown with cassava, which in general, tolerate low soil fertility and aluminum (Al) toxicity. However, without any improvement efforts such soil will become worse. Intercropping cassava with Brachiaria decumbens (BD) which adapts to acid soil and tolerates low fertility soils as well as application of arbuscular mycorrhiza (AM) and organic matters are among the important efforts to rehabilitate this soil. The experiment was conducted to examine the impact of BD, AM and potassium (K) enriched rice straw compost on exchangeable Al, available K, and stability of soil aggregates. Experiment was arranged n a completely randomized design with three factors and three replications. The first factor was BD as cassava intercropping, the second factor was AM, and the third factor was 2t ha-1 rice straw compost enriched with 0 kg, 50 kg, 100 kg, and 200 kg KC1 ha-1. The results showed that planting BD decreased 33% exchangeable Al, which means that the root exudates of this grass was effective in detoxifying Al3+. Treatment of BD and/or in combination with AM was effective in preserving K added to the soil, increasing total polysaccharides, and improving soil aggregate stability. This indicated that planting BD and apply AM and K-enriched rice straw compost improved acid soil fertility, and therefore can be recommended in cassava cultivation. |