It is proposed that seed-applied, placed and foliar applications of nitrogen and phosphate are assessed individually and in combination for effects on early canopy development.
The experimental approach will be to undertake field trials through to full canopy. Taking trials to yield could be avoided to minimize costs. Alternatively, yield estimates could be estimated using the BeetGro model from the full canopy stage. This would also allow for modelling impacts of different weather patterns post-full canopy stage.
Canopy development will be closely monitored by RGB photography, NDVI (multi-spectral) imaging and fresh weight plant analysis.
Outcomes / Key Message For Growers And Industry
- Despite a few site-specific responses there were no consistent effects of applying either additional soil or foliar nutritional treatments to sugar beet in 2018.
- All treatments were applied earlier to the crop before the summer drought which may have masked any responses as early canopy production was lost due to moisture and heat stress.