TP6: Site management

In- and outputs of above-ground biomass, site management Dornburg, linking science and practice

Summary

TP6 will concentrate on the inputs and outputs of above-ground biomass at the core plots. Research activities will be conducted in the silvo-arable alley cropping system Dornburg and will use similar methods as the groups conducting the biomass estimates at Reiffenhausen (TP2-2), Wendhausen (TP5) and Lausitz (TP7). Additionally, TP6 has the task of providing logistical support for research activities of other SIGNAL TPs on the Dornburg alley cropping system. To ensure a two-way information flow, suggestions, problems and hindrances from the farmers’ point of view will be gathered, evaluated and provided for the researchers in partner TPs of SIGNAL, as well as they are being published to reach responsible decision-makers. The amount of aboveground biomass output from crop strips is quantified during harvest. Yield estimation and mapping will be done with GPS-equipped harvesters. The spatial distribution of yields in dependence of the distance from the tree strips is analysed using GIS. In addition, crop yield and quality parameters are determined at 1, 3, 7, 12 and 24 m distance from the tree strips with 4 replications within each core plot. The following parameters are to be tested by TP5: grain yield (harvest-fresh, weighing), straw yield (harvest fresh, weighing), dry matter content grain (1 day 105°C), dry matter content straw (1 day 105°C), grain: straw-ratio (calculation). The following quality parameters will be analysed by TP5: protein content and starch content (cereals), protein content, raw fat content and glucosinolate content (rapeseed). The amount of aboveground biomass input by crop harvest residues is determined at the above mentioned sampling locations. The amount of biomass output from SRC strips A-C is quantified during harvest in 2018. The biomass weight of each tree row in each SRC strip will be determined by weighing of absolute masses. Quality parameters of harvested wood will be analysed by TP5. Harvest of SRC strips D to G is planned for 2022. Each year during the dormancy period diameters at breast height (1.30 m) and heights of trees are measured non-destructively. The amount of aboveground biomass input by tree harvest residues is determined. Litterfall will be quantified by using litterfall traps. To analyse the spatial distribution of tree litter, traps will be placed along transects into the crop field (1, 3, 7, 12, 24 m distance from SRC strips within the core sampling plots, 4 replications) as well as directly within the tree strip. Quality parameters will be analysed by TP5.

Additional Information

http://www.agroforstenergie.de/de/

Contact

Torsten Graf

Thuringian State Institute for Agriculture (TLL)
Postbox 100 262, 07702 Jena, Germany

Phone: +49 (0)3641 683146
Email: Torsten.Graf@tll.thueringen.de

Carolin Rudolf

Thuringian State Institute for Agriculture (TLL)
Referat 430, Thüringer Zentrum für Nachwachsende Rohstoffe (TZNR)
Naumburger Str. 98, D-07743 Jena, Germany

Phone: +49 (0) 3641 683-263
Email: carolin.rudolf@tll.thueringen.de