OSRsulphur advised
25 January 2002
OSRsulphur advised
MANY advisers are still paying scant attention to the sulphur needs of average oilseed rape crops, let alone those with 5t/ha (2t/acre) yield potential.
That is the warning from Liz Williams, CPB Twyfords head of oilseeds.
Leaching and the inability of waterlogged crops to dredge up S reserves from depth meant many potentially high yielding crops performed poorly last season, she notes.
"Hybrids that start to grow away early need an initial amount of S and then a steady supply from stem extension onwards."
• ADAS recommends that 30kg/ha of S be applied in early spring to all rape crops on soils where deficiency symptoms have been seen or confirmed by analysis. *
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