Our first attempt was with tillage radish and phacelia mix. direct drilled into stubble in late august early sept and today we are disappointed. The dry weather did not help but we have not got proper soil cover so grass weeds are present as they normally would be. We used the seed rate advised but we think its to low in hindsight.
-/-
now, I think that this is the best contrast. Watching onto "Phil"'s pictures, which show good development and the comment of the previous writet. Just undrlines the most important fact: get the cover crops out as early as possible.This was sown last week of July. Had rain after drilling and two good months of weather. No drought. Ahead of spring cropping cover is beneficial. Unless it is drilled in august it can be unreliable. Oats is reliable in wet weather / later timings. Cover crops need to be cost effective.
DD cover crops might lack the mineralisation of nitrogen you might get from disc or cultivator drill
Over here the cover crop seed will be a little less next year due to the amount of seed which is still in the bag due to no oportunity of planting at a decent enough time of the year.
The rule of thumb: one day growth in July = one week in August - the whole September.
York-Th.