02311naa a2200181 a 450000100080000000500110000800800410001910000180006024501250007826000090020352015170021270000210172970000120175070000160176270000140177870000160179277303210180813149132008-09-24       2008    bl uuuu     u00u1 u    #d1 aVELASQUEZ, E.  aSoil restoration in tea plantations by the FBO technology. Improvement of macro fauna communities and macro aggregation.  c2008  aIn tea plantations of Southern China, a pilot experiment using the FBO technology was installed in three replicated plots 15x30 m each allocated to four different treatments: control, FBO with full organic fertilisation and no pesticide application, FBO with 50% inorganic fertilization, with application of either chemical or bio pesticides. FBO restores soil function by creating small islands with full ecological functionality in a degraded soil. The islands are trenches 1.5m in length, 30cm wide and 45 cm deep, filled with soil and two sorts of organic matter of contrasted qualities and inoculated with earthworms. The choice of earthworms and organic matters and their specific spatial array are key elements for the success of the technology. Macro fauna communities were greatly changed after one year. Ants were no longer over dominant in FBO treatments since the abundance and diversity of termites, Diplopoda and predators had significantly increased. After 18 months, macro fauna abundance was 240 ind m-² in FBO trenches and 370 on average in the control plot. Earthworms were only found in FBO treatments. The FBO increased soil aggregation in the three layers (0-10; 10-20; 20-30 cm); total abundance of macro aggregates was increased 11.7 times in the FBO 100% as compared with the conventional plot. Effects were more important in deep layers (10-30cm) than surface layers (0- 10). Biogenic aggregates mainly made by earthworms comprised over 30% of total aggregation in all FBO treatments.,1 aRUIZ-CAMACHO, N.1 aDAI, J.1 aLAVELLE, P.1 aZHANG, C.1 aYONG, T. L.  tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.