Wood Ash or Lime?
The trees accumulate the minerals from the soils in several decades. Large amounts of cations are removed from the field by the lumber of forest which leads to the decrease of its buffer capacity. To maintain the sustainability of soils it is necessary to maintain its buffer capacity and pH. Besides lime wood ash can be one of the most effective sources to provide the sustainability of intensive land use. The effects of wood ash as a possible micro-nutrient and liming material were examined in our experiment on the early growth of cucumber and corn seedlings. Based on the evidence of its pH increasing effect we came to the conclusion that the use of wood ash is recommended instead of lime for the improvement of acidic soils. Wood ash contains several micronutrients in an optimum composition for forestry and agricultural plants. The solubility of heavy metals is very low; therefore there is no risk using wood ash in agriculture and horticulture as our lab-experiments showed. The effects of wood ash were different on the monocot com, and the dicot cucumber. The monocot corn was more sensitive. This effect is contradictory, since the uptake of some important micronutrients based on phytosiderophores, and these plants are less sensitive to the soil pH. The dicots release organic acids into the rhizosphere, and therefore the uptake of nutrients depends on soil pH.
Laszlo Levai Szilvia Veres Nora Bdkonyi Eva Gajdos
Division of Agricultural Botany and Crop Physiology, Institute of Plant Science, University of Debrecen, Boszormenyi u.138.H-4032 Debrecen, Hungary
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
190-191
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）