Oilseed rape first nitrogen should be on by now. The crop is looking the best I have seen it for three years and has a lot of potential that will be worth looking after. Production figures are suggesting a shortage of OSR so this years crop should be worth something.
Winter wheat is just approaching GS31 and requires first application of nitrogen from now. Much of the nitrogen applied earlier than now will have been washed out of the soil and will not be available to the crop.
Maize and sunflower drilling is just about getting underway although recent rain has slowed plantings.
Officially all spring cereals have now been planted because the reports have been written saying so. But it hasn't.