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   The growth of birch (Betula pendula Roth.) plantations on the abandoned agricultural lands

   Policy Papers & Briefs

   December, 2006

   Latvia

   farmland

   research

   The results of birth growth investigation in the 9 year old plantation on the abandoned podzolic soils of agriculture lands are assumed. The planting density was 1100; 1600; 2500; 5000 and 1000 plants per hectare. The average heights have reached 5.31 and 5.36 m, but average DBH 5.38 and 5.36 cm in the plots with 10 000 and 5000 trees per hectare accordingly. The average height has reached 6.47; 6.65 and 6.73 m but average DBH 7.17; 6.67 and 7.38 cm in the plots with 2500; 1000 and 111 trees per hectare accordingly.