In many cases bio-effectors are not only applied as single products but also as product combinations to induce multiple responses of the target plants (e.g. stimulation of root growth in combination with mobilisation of sparingly available sources of phosphate and other nutrients). Therefore, the overall objective of WP02 is the development of bio-effector products based on combined or synergistic interactions of single bio-effectors identified in WP01, to combine multiple beneficial properties according to the requirements of the different alternative fertilisation systems addressed within WP04-WP07.
Starting point is the identification of functional combinations of promising bio-effectors based on the products, microbial strain and product collections already available from partners with expertise in bio-effector production. In a second phase, also combinations of promising bio-effectors identified in the WPs addressing the different alternative fertilisation systems (WP04-WP07) will be included. A special task is the investigation of positive synergistic interactions of bio-effectors with the native microflora (e.g. promotion of already existing symbiotic interactions).
Pilot experiments are conducted in controlled environments to characterise the conditions required for the best performance of the most promising bio-effector combinations and to dissect the detected synergistic effects as a prerequisite to elucidate the functional mechanisms behind within WP03.
