Oilseed rape yields show a near-8% rise in gross output in independent trial sites that established well and were largely free of pests.
Early results show a gross output of 5.7t/ha, above a four-year average of 5.29t/ha, according to three AHDB English trial sites.
“Where crops got off to a good start, established well and were free of pests then the weather conditions suited the crop,” AHDB variety expert Simon Oxley told Farmers Weekly.
Gross output is measured by the seed yield adjusted for the oil content, with the Oxfordshire site giving the highest output at 6.16t/ha.
Oil contents for the three trials in Hampshire, Norfolk and Oxfordshire show levels near the norm, ranging from 43.5-45.7%.
All three sites were outside the main hot spot for cabbage stem flea beetle damage – around the M11 corridor – and established well.
The highest yield varieties include Arazzo (111%), Charger (111%), Avator (108%), Fencer (108%), Incentive (108%), Harper (108%), V316OL (107%) and Campus (107%).
Based on four-year averages, the highest yielding varieties to date are V316OL (108%), Incentive (107%), Charger (107%), Campus (106%), Arazzo (106%) and Picto (105%).
The clubroot-resistant variety Mentor had a gross output of 102% compared with the established resistant variety Cracker at 94%.