Evaluation of seedlings of six tree species in lime mined soil by using some amendments.
This study was conducted to determine the best combinations of amendments for the optimum seedling growth (in terms of root and shoot length, photosynthetic area and dry weight) and establishment of six tree species planted on lime mined soil of Madukkarai, Coimbatore, Tamil Nadu, India. The tree species were Acacia mellifera, Casuarina littorea, Ceiba pentandra, Melia azedarach, Pongamia pinnata and Tamarindus indica. The soil collected from the lime mined area was amended with farmyard manure (FYM), rock phosphate (RP), vesicular arbuscular mycorrhizal (VAM) fungi, and appropriate cultures of Azospirillum, Rhizobium and Frankia. Higher values of shoot length, photosynthetic area and dry weight of seedlings A. mellifera were recorded in lime mined soil amended with FYM, RP, and Rhizobium compared to other treatments. All the growth attributes of Casuarina littorea were higher in limed mined soil amended with FYM, RP and Frankia inoculation. Soil amended with FYM, VAM fungi and Azospirillum recorded higher growth performance of Ceiba pentandra. The highest root length Melia azedarach and shoot length and photosynthetic area of P. pinnata were recorded in the mined soil amended with FYM and VAM fungi. Higher values of photosynthetic area and dry weight of T. indica were observed in the soil alone treatment and mined soil amended with FYM, VAM and Azospirillum, compared to other treatment.