02191naa a2200217 a 450000100080000000500110000800800410001902200140006010000170007424502200009126000090031152014600032065000280178065000240180865300220183265300150185465300250186970000150189470000150190977300490192416340512023-05-05       1995    bl uuuu     u00u1 u    #d  a0032-079x1 aCAMPRUBI, A.  aGrowth enhancement of citrus reshni after inoculation with glomus intraradices and trichoderma aureoviride and associated effects on microbial populations and enzyme activity in potting mixes.h[electronic resource]  c1995  aThere have been some scientific reports suggesting that dual inoculations with arbuscular mycorrhizal (AM) and saprophytic soil fungi may cause an additive or synergistic growth enhancement of theinoculated host plant. Some Trichoderma spp. have shown antagonistic potential against pathogenic fungi and a beneficial effect on plant growt. Joint inoculations of the mycorrhizal fungus glomus intrardices Schenick and Smith, isolated from a citrus nursery (Tarragona, Spain) and a strain of Trichoderma aureoviride Rifai, isolated from an organic compost, were tested on a citrus rootstock, Citrus reshni Hort. ex Tan. The interactions between both microorganisms and their influence on mycorrhizal root colonization and plant growth enhancement, the changes produced inthe soil microbial activity, like esterase, trehalase, phosphatase andchitinase activities, and on microbial populations were evaluated in three organic substrates: (1) sphagnum peat and autoclaved sandy soil (1/1, v/v), (2) sphagnum peat, quartz sand and perlite (1/1, v/v) and (3) pine bark compost (BVU, Prodeasa Product). Substrate charactreistics were more important than the AM inoculation treatment in the determination of enzyme activity. In bark compost, the number of bacterial colonies obtained on soil-dilution plates was significantly higher in peat and sand mixtures. Inoculation with T. aureoviride alone produced no significant effect on growth enhancement of C. reshni.  aTrichoderma aureoviride  aGlomus Intraradices  aCitrus rootstocks  aMycorrhiza  aSoil enzyme activity1 aCALVET, C.1 aESTAUM, V.  tPlant and Soilgv.173, n.2, p.233-238, 1995.