Productivity of willow short rotation coppice in one-year cutting cycles
2005
Szczukowski, S., E-mail: [email protected] | Tworkowski, J. | Stolarski, M. | Grzelczyk, M. (Uniwersytet Warminsko-Mazurski, Olsztyn (Poland). Katedra Hodowli Roslin i Nasiennictwa)
The 1996-03 field trial on Kwidzyn Lowland (Poland) heavy alluvial soil (complex of agricultural suitability 8 and class 3b, according to the Polish Soil Sciences Society) aimed at defining the productivity of six willow clones planted from 20,000 to 60,000 plants/ha and harvested in annual cutting cycles. The yield of one-year old stems ranged from 12.51 to 21.52 t of dry matter/ha x year. The highest yield of dry matter of wood was recorded for Salix viminalis 082, 19.77 t/ha x year on average. Increasing planting density from 20,000 to 40,000 plants/ha resulted in a significant increase in dry matter of wood. A further increase in planting density up to 60,000 plants/ha resulted in a slight yield increase trend only. The water content in one-year willow stems over harvest ranged from 50.4 to 53.1 percent
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