New kids on the block – exploring the role of lentils and lupins
When we think of the protein crops grown in Ireland, two immediate crops generally spring to mind – beans and peas. However, researchers in Teagasc are identifying and examining alternative crops that may form part of tillage rotations in Ireland is future years.
With a variable climate throughout Ireland and differing soil types – many of which are no conducive for growing field beans due to the lack of moisture needed to optimise yields – Dr. Shelia Alves and her team in Oak Park are examining the role that lupins and lentils may play under Irish conditions. Preliminary results from this ongoing research were presented at last week’s Teagasc Crops Open Day in Oak Park.
Lentils
Suited to conditions where other crops are not, lentils are a new addition to the trial plots in Oak Park. Being tolerant to drought, such crops have a good protein profile and appear suited to the Irish climate. 2023 marked the first year of a field trial in Oak Park, where two varieties bred for the Northern European Climate and seed rate have been established.
Narrow-leaf lupins
Recent studies of new varieties of narrow-leaf lupins have demonstrated the high potential of this crop in Ireland. Between 2011 and 2022, the average yield of lupins grown in Ireland far exceed that of other European countries. Yields of ~5t/ha have been reported, which is more than 1t/ha ahead of Denmark, ranked next on the list of countries for lupin yields.
While the crop would yield lower than both peas and beans, its higher protein content (40%) and suitability for sandy soils suggests the crop could be of interest in Irish conditions where other crops are not viable.
In its second year of a field trial, seven varieties are currently on trial in Oak Park, with the effect of seeding rate, row spacing and the addition and exclusion of rhizobium being examined. One of the primary challenges with lupins – that of late harvesting – is also being examined, with this being addressed through varietal evaluations.
Although the information presented at the Teagasc Crops Open Day was only preliminary, the results of this research in the coming years should be watched with interest.
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Photo caption: Narrow-leaf lupins being grown at Teagasc Oak Park