SUM20.07b: Effects of Seed Manganese Concentration in Lupins, Eradu
Aim
This trial aims to utilise seed retained from SUM19.19 to assess the growth and performance of Barlock and Jurien lupin seed with different manganese (Mn) concentrations on a low Mn status sandy soil south of Eradu.
Trial Details
Location: Eradu.
Trial Size: 1.61m x 8m, 12 treatments x 4 reps = 48 plots.
Season Rainfall: 255 mm, BOM Eradu, 25 mm below long-term average.
Results
Key Messages
Increased Mn concentrations in seed improved germination at 90% confidence level but not 95%.
Whole top and stem sampling indicated Mn in lupin tissue was not affected by seed Mn concentration.
Mn in seed as the only non-soil source of Mn to the crop had limited effect on yield or split seed.
The most profitable seed Mn concentration was 20mg/kg in Jurien, returning $1390/ha.
Evidence from this trial and the associated 20.07a trial suggests that utilising adequate Mn status lupin seed can improve stored seed viability, improve crop emergence and can have a positive impact on lupin crop profitability.
For further information about this trial please get in touch with local Area Manager Shane Turner, sturner@summitfertz.com.au.