Ulmus Pumila under Irrigate and Rain-fed Continental Conditions in the First Year of Growth
Pérez, I., Pérez, J., Carrasco, J.E., Ciria, P.
Siberian elm (Ulmus pumila) can be a good alternative for biomass production under dry conditions in the Mediterranean areas, particularly due to its resistance to graphiosis and the low water requirements. The aim of this study is to describe an experience in regard to the ability of Ulmus pumila for implantation and growth during the first vegetative period. The research was carried out in Soria, a province in Northern Spain, at an altitude of 1,000 m above sea level where climate is extreme continental. The soil of the parcels had low contents of organic matter and nutrients and the elms were established at two different plantation densities (3,333 plants/ha and 6,666 plants/ha), under rainfed and two different irrigation conditions. When the dry weight was studied, significant differences were detected between irrigated and rainfed conditions, however the Spacing in the first year of growth was not a limiting factor and the weight per plant in different plots was similar. A Mathematic model for relating the dry biomass weight with diameter and height was carried out and equations with Rsquared between 92 94 % were obtained. The most outstanding analytical results were: Ash: 3.2%, Nitrogen: 1.17% and NCV: 18.04 MJ/kg dm.
biomass, irrigation, short rotation forestry (SRF), water use, yield
Energy crops (session 5)
19th European Biomass Conference and Exhibition
765 - 769
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