Olive orchard amended with two experimental olive mill wastes mixtures: effects on soil organic carbon, plant growth and yield.
Amendments of olive orchard soil with two different preparations of olive mill solid waste (OMWMs) at the rate of 9tonha(-1) per year for five years in two different plots were compared with an industry standard soil amendment using urea. Both the OMWMs amendments showed significant increases in total organic carbon and humic substances in soil of approximately 40% and 58%, respectively, without negative effects on tree growth and yield. This work has shown that olive oil mill waste (OMW) can be recycled safely using the bioremediation system used in this study. We suggest that this system is particularly beneficial to organic farming and is an alternative solution to direct spreading of raw OMW on farm lands.
Altieri
Roberto
R
Institute for Agricultural and Forest Mediterranean Systems, National Research Council (ISAFoM-CNR), Via Madonna Alta 128, 06128 Perugia, Italy. r.altieri@iro.pg.cnr.it
Esposito
Alessandro
A
D002244:Carbon / Q000737:chemistry*; D006812:Humic Substances; D007220:Industrial Waste; D031658:Olea / Q000254:growth & development*; D018515:Plant Leaves / Q000737:chemistry; D012987:Soil
D006812:Humic Substances; D007220:Industrial Waste; D012987:Soil; D002244:Carbon