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Förslaget inkom 2004-03-25

The effect of Mycorrhiza inoculation on Acacia seedling performance.

OBS! ANSÖKNINGSTIDEN FÖR DETTA EXJOBB HAR LÖPT UT.
Background for the project: Department of Forest Ecology (FE) and Sabah Forest Industries (SFI) of Sabah, Malaysia are jointly operating an environmental impact assessment research project on site effects of the conversion of tropical rain forest to fast growing forest plantation (for more information see http://www.sek.slu.se/~malm/Joint_projec.htm). During the more than ten years of cooperation, the working environment within the framework of the joint project have been a good growing ground for teaching and training. For higher education degrees, the project have resulted in one Malaysian taking a MSc and one Swede taking a PhD. Presently, a MSc training aiming at graduating two Malaysians is in operation. Malaysian officers, laboratory personnel and field conductors have undergone successive training mostly in Sabah, but also for shorter periods in Umeå. Since 1989 eleven Swedish students have made field studies of between 4 to 10 weeks at the research site. Seven of these students have done Minor field studies (MFS).

Background for this study: In Sabah, Malaysia the normal potting medium in plantation nurseries is subsoil. This is because good topsoil is getting increasingly scarce and valuable. When seedlings are grown in subsoil the performance is very poor without heavy fertilizer application. However, the total nutrient content in the subsoil is not very low. The problem instead seems to be that the nutrients are not available to the plants.

The objective for this thesis would be to answer if this could be due to a lack of vigorous mycorrhiza in the subsoil. Some commercial mycorrhiza strains and locally extracted strains would be used to see if the nutrient uptake could be improved by inoculation.


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