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Marc Assis


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Is my newly planted Quercus Ilex dying?

Posted: 08/12/2012 at 19:39

Thank you blairs. But as I said, trees are dying when they are much older. I understand that the first two years are fundamental but it is not feasable for me to irrigate such an enormous area as the topography is quite irregular. Previous to the plantation, land was used for many years to grow cereals. Organic matter was insignificant. Today, after ten years, soil has accumulated a great deal mainly because trees were planted on leveled curves or lines reducing erosion to minimum values. Still, trees continue to die even after a well developed root system.

Is my newly planted Quercus Ilex dying?

Posted: 05/12/2012 at 11:54

After the 1992 international conference in Rio de Janeiro about climate change, many countries went into converting agricultural land into forestry. So I did, in soutern Portugal and planted 100 hectares in 1999 with Quercus ilex. This project was funded by the EEC (Reg. 2080). Summers are very dry in this area and many trees die at the end of the summer. But this is understandable as trees were still young. The problem is that some trees are dying when they are much older, already 6 foot tall. So I am now in deep trouble because I cannot maintain the minimal density of 300 trees per ha. and I am asked to refund the investment. It is my intuition that something must be lacking in the soil for the sucessfull growing of the tree. Soil analysis were made and major nutrients were abundant. Is there any symbiotic micro-organism in the soil fundamental for Quercus ilex ?

 

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