With the autumn conditions delaying sowing of many crops growers are asking questions about how late winter beans can be sown, bringing back recollections of the winter of 2012 /2013.
Trials conducted at PGRO back then showed that winter beans sown in the spring were not a disaster, even at 18 plants/m². Maturity is, however, later by the order of 7-12 for days for Wizard.
Now as back then growers having seed in the barn (either bought or saved) are asking the inevitable questions:
- How late can I plant winter beans?
- Can I plant winter beans in the spring?
- What is the likely yield?
- And how late will they be to harvest?
In 2012 a small amount of previous trials, indicated that they could be grown when planted in the spring, but to treat them as a spring bean, increasing the plant population to more like that of spring beans (typically 40 plants/m²).
Of course, PGRO winter bean trials 2012/13 suffered the same fate as commercial plantings and this gave an opportunity to gather some concrete data.
As part of the Optibean project, winter beans Wizard and Clipper were sown at 3 sites, at 4 populations and and at 3 sowing dates. A summary of data is presented here from the sites at Dowsby, Lincoln and Thorney.
To stress that winter beans sown in the spring were not a disaster, even at 18 plants/m². Maturity is however, later by the order of 7-12 for days for Wizard.
It must be remembered that 2013 was a late season for most crops, by about 10-14 days. The lateness of the season benefited autumn crops sown in the spring and, indeed, late sown spring crops too.
(Edition Number 11 : CB1911)