Nutrient effiency of Populus and Salix

DSC03931 - Arbeitskopie 2

The sustainability of short-rotation plantations depends on the supply and maintanance of water and dissolved nutrients in order to meet the demand of the plants. The efficient use of nitrogen is important for maintaining or increasing biomass yields and reducing environmental impacts. We study  the effect of nitrogen fertilization on chlorophyll content and photosynthetic performance of poplars (Populus maximovizcii × P. nigra clone Max 4) and willows (Salix viminalis clone Inger) growing at different nitrogen levels (0, 25, 50 and 75 kg N/ha) in a field trial. Leaf chlorophyll content were measured in situ with a Yara-N-Tester (Yara, Oslo) and electron transport rate of photosystem II were detemined with a chlorophyll fluorescence system under constant light conditions 

In cooperation with Leibnitz-Institut für Agrartechnik Potsdam-Bornim, Potsdam 

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