THE EFFECT ON LUPIN ESTABLISHMENT AS A RESULT OF REDUCED SEED INTEGRITY
21 October 2019
27 May 2022
Growers in the Kwinana East, Kwinana West, Geraldton and Albany port zones will have an improved understanding of the contributing factors behind poor lupin establishment. In recent seasons, growers have been experiencing issues with poor germination of lupin crops from retained seed and as such want to better understand the contributing factors behind this.
Project lead organisation
In recent seasons, growers have been experiencing issues with poor germination of lupin crops from retained seed and as such want to better understand the contributing factors behind this. Manganese (Mn) deficiency, variety, harvester settings and moisture at harvest have all been identified as contributing factors behind poor establishment, however there is limited information available to growers and advisors as to the most important and controllable factors in our modern farming systems (some research was done in the 1970’s but farming practises have changed drastically since then) that could be managed differently, to improve lupin germination percentages.
The issue has been raised in the Geraldton zone RCSN meeting in June 2019 after issues in 2018 with retained seed from the previous season. Whilst it is widely accepted that Manganese deficiency is a contributing factor toward poor germination due to its expression in Lupins as split seed, it is however unclear under what circumstances Mn deficiency is most prevalent and what other factors contribute to this issues. Harvest operations are considered the other likely contributing factor as the threshing mechanisms within the header can damage the seed coating, an effect possibly exacerbated by grain moisture, harvesting conditions and variety. This project will assist all stakeholders in the lupin industry including growers, advisors, researchers and breeders to ensure the issue is better managed in future seasons.
The project has been extended through a variation with GRDC, investigating various mechanical handling processes that are leading to this decline in germination.
Results and Reports