Yield uplift technology for seed

Symiro contains a naturally occurring compound known to be secreted by rhizobia for plant signalling. This has a number of effects. Firstly, the plant cells make more sugars available to the rhizobia. Secondly, the plant increases root respiration, which in turn increases CO2 availability for the rhizobia. Other compounds thought to be useful to the rhizobia are also synthesised by the plant. As a result of these processes beneficial to the rhizobia, nodulation, and therefore nitrogen fixation, is increased.

As well as benefitting the rhizobia, Symiro is also thought to enhance plant growth more directly, through the promotion of cell division and expansion, as well as through the enhancement of leaf photosynthesis.

Symiro technology has been tested across four years of rigorous field trials, both as a standalone compound, and incorporated into our finished product InSync™ Plus. Field trials conducted in Brazil showed InSync Plus gave a 241 kg/ha (5.6%) yield uplift compared to the control when averaged over 15 locations, each with 6 replications. The difference was statistically significant (P<0.001).

The effect of incorporating Symiro technology onto soybean seeds has been shown to significantly (P<0.001) affect nodule number. However, the effect is very concentration dependent. At the optimal concentration (labelled C on the graph) nodulation was increased by 40%. The overall biomass also increased, showing that Symiro can improve nitrogen fixation and therefore stimulate plant growth.