Natural Basalt as a Potential Amendment for Highly Weathered Acid Soils
Basaltrocks, which are naturally available and contain many essential elements, were used to improve properties of a highly weathered acid Oxisol ( pH < 4.3 ). The results showed that basalt application ( 0 to 80 t · ha-1 ) significantly increased soil pH from about 3. 8 to 6.5, depending on basalt rates. On the other hand, values of pH0 and point zero net charge ( PZNC) decreased, indicating basalt application is able to generate negative charge. The charge generation ranged from 5.5 to 11.9 cmol c · kg-1. Basalt application also significantly increased Ca, Mg, K, Na and Si but significantly suppressed toxic elements ( Al and Mn) of in situ soil solution. The implication of the study is potential of basalt to be used to restore properties of acid soils.
Anda Markus J Shamshuddin CI Fauziah OSR Syed
Center for Agricultural Land Resource Research and Development, Jalan Jr.H.Juanda No.98 Bogor 16123, Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Sel
国际会议
The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)
广州
英文
174-175
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）