To evaulate the nitrogen fixing capacity of various legume species grown on Kangaroo Island.
Key messages
All the legumes sown - peas, lupins, sub clover and faba beans - were equal in terms of their nitrogen-fixing capabilities, reflecting the importance of having well nodulated legumes.
The average amount of N fixed by the legumes was calculated at approx. 86kg/ha.
In year 2, this residual N gave rise to a approx. 1 t/ha canola yield advantage.
In yera 3, no differences in residual nitrogen from legumes were measured.
Linseed extracted more moisture, from a greater depth, than the faba beans in the same year and all subsequent crops - canola and oats.
The linseed was able to dry the soil profile in a decile 10 year (812mm rainfall). This is a potential solution for farmers wanting to dry out their soil profile.
Two years after growing linseed, soil moisture levels were even.
Lead research organisation
N/A
Host research organisation
N/A
Trial funding source
SAGIT
Related program
N/A
Acknowledgments
Funding/Sponsors:
South Australia Grains Industry Trust (SAGIT) funding administered by AgKI.
Thanks to the Stantons for providing the trial site, seed and spraying.
Trial source data and summary not available Check the trial
report PDF for trial results.
Climate
Derived climate information
No observed climate data available for this trial. Derived climate data is
determined from trial site location and national weather sources.
MacGillivray SA
NOTE: Exact trial site locality unknown - Climate data may not be accurate
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to
construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol
16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.
