Abeer H.E. Abd-El Kareim1 and Gamal.A.M El-Sayed2( 2013). IMPACT OF COMPOST TEA, HUMIC ACID AND MICROBIAL INOCULANT ON ACCLIMATIZATION STAGE OF DATE PALMEgyptian Journal of Biotechnology , 43 (13) : 47 – 63
Abstract: Little is known about the effect of organic biofertilizers on date palm acclimatization process. Compost tea, Humic acid and EM at three concentrations (50, 100 and 150 ml/l) and combination between previous concentration of compost tea and Humic acid with 50 ml/l EM were used as fertilizers every two weeks for 12months during acclimatization process of date palm dry cultivar Bartomouda. Plants received NPK at 2g/l were used as control treatment. Morphological parameters were enhanced to high values using compost tea at any concentration in combination with EM at 50ml/l. Application of compost tea (150 ml/l), compost tea (50, 100 or 150 ml/l) + 50 ml/l EM and Humic acid (150 ml/l)+ EM (50 ml/l) enhanced significantly leaves N content while compost tea+ EM (50 ml/l) and chemical fertilizers, EM (150 ml/l) enhanced leaves K content. No significant difference of P content could be observed between all treatments used. Chemical fertilizers and Humic acid succeeded to increase contents of N and K in the soil. On the other respect, compost tea, Humic acid and EM were the superior for increasing the biological activity in the date palm rhizosphere in terms of total counts of bacteria, actinomycetes and fungi as well as dehydrogenase activity.
Keywords: (Date palmو Compost tea, Humic acid EM (effective microorganisms))
