Effect of Solid Phosphate Sludge Amendments on the Growth of Fruit and Forest Trees in the Nursery

Phosphorus deficiency is a major limiting factor in horticultural production. One potential solution can be restoring soil phosphorus from mineral resources, such as solid phosphate sludge (SPS) generated treatment processes at mining sites agriculture. This study explores the possibility of using this nurseries to produce fruit and forest plants. We tested six mixtures SPS with sandy Maamora on ten plant species. In second experiment, we same sea sand. addition, one concentration four composts based was also two citrus rootstocks carob. The first experiment’s results showed significantly higher growth control mixture for pomegranate, acacia, C. volkameriana relative concentrations 20% 30% other species, although there no significant difference between treatments. estimations AUGPC (area under progress curve) most M4 (30% + 70% sand) higher, AUGCP compared M1 mixture. application positively affects improves trees nurseries, especially when 20 30%. For purpose, could have great used create favourable condition cultivation substrate.