I went to a Soyl workshop today, and Kings cover crops had a slot. They warned against drilling on the green into oil radish as they have seen alleopethic effects of oil radish killing black grass, and so would probably kill a cereal too. Anyone had any experience, as my plan was to glyphosate the day before drilling spring barley and now I may have lost my bottle........its strong land, so I wanted the crop to draw as much moisture as possible, so worried that killing off 3-4weeks prior could leave me a wet field.
Drilling on the green Oil Radish
- Thread starter Cutlerstom
- Start date
do they really know what they are talking about ? how much REAL experience do they have of this ?
oil radish in all my CC mixes and never seen an issue
- Location
- Hampshire
I know that there is an issue with rye for the same reason.
Friend of mine growing an oil radish for root knot nematode control. Mulches & incorporates but cannot drill for week-ten days afterwards due to the toxic nature of the thiocyanates released(which help control the eelworms, and have an effect on seed germination- hence the blackgrass effects). the growing crop does also have an allelopathic effect on germination. This green manure is 100% oil radish after OSR before sowing wheat early Oct. There are numerous different oil radish species. The one he grows is to give best effects against nematode.
- Location
- Bury St Edmunds
I was there too and thought the same thing. I thought that tillage radish would be handy post OSR and before WW, maybe I need to rethink this and only use radish as an overwinter cover crop before drilling beans. Maybe tillage radish at a low inclusion in a mix would be best . Like you I had planned to drill on the green and spray post drilling as don't want a wet field post cover crop.
SilliamWhale
Member
I haven't heard the yanks noticing anything about wheat and tillage radish
what nematode ? I really wouldn't want to be killing the good ones !
They saw the blackgrass in a trial plot die last year in the oil radish compared to westerwolds rye grass plot next door where it didn't, so based on limited data, but I guess they are wanting to cover themselves in case something goes wrong!
I'm a bit sceptical, as it doesn't appear to have had any alleopethic affects on my black grass. It still looks fairly healthy to me...but then again, I don't want a failed spring barley crop - I can hear "told you so" from the old guard already ringing in my ears....
If you have strong land I am not sure you want to leave the cover to be honest, when we have had patches of green cover the soil has been wet,cold and sticky whereas bare ground is much drier and drills better and is warmer. It is very different on boys ground where they use the cover to keep the moisture in.
It cant work both ways if it wicks out moisture then it will do it on light as well as heavy soil, the same applies if it stops moisture being evaporated off bare soil, it works on heavy and light soil. Covers are a good idea but personally I am using sheep to clear them now so I can spray by 1st wk March and aim to drill from beginning of April, conditions permitting
Got a drill now then Andrew?
- Location
- Bury St Edmunds
Hopefully
dontknowanything
Member
- Location
- Cambridge
I think all these things happen when you have a straight stand of a particular plant? Mixes less likely to be a problem IMO
Funnily enough, watching that you tube link that Fred posted, I noticed Jill Clapperton mentioned that daikon radish shouldn't be sown at more than 1lb/acre and then only in a mix as it is toxic to the following crop. I'm not sure how different daikon radishes are from oil radish sold here, but...
Returning to OP, I'd spray them off now and let the sun on to the ground
dontknowanything
Member
- Location
- Cambridge
Daikon is tillage radish (dai means big in Japanese), but I don't know what exactly oil radish is either
- Location
- Cornwall.
Forage radish (Raphanus sativus var.longipinnatus) is also known as ‘Daikon’, "Tillage Radish" is an EU registered trade name for a forage radish, "Groundhog Radish" being another trade name.
Oilseed radish (Raphanus sativus var.oleiformis) are similar to the forage radish, but have a stubbier, more branched taproot and tend to be somewhat more winter hardy than the forage radish (‘Daikon’).
Oilseed radish (Raphanus sativus var.oleiformis) are similar to the forage radish, but have a stubbier, more branched taproot and tend to be somewhat more winter hardy than the forage radish (‘Daikon’).
dontknowanything
Member
- Location
- Cambridge
is fodder radish the same as forage radish?
- Location
- Cornwall.
I think they are derivatives of oilseed radish (stand to be corrected) the difference between the two being root size, could be wrong though.
dontknowanything
Member
- Location
- Cambridge
That would make sense as I've never seen massive roots when I've grown fodder radishI think they are derivatives of oilseed radish (stand to be corrected) the difference between the two being root size, could be wrong though.
- Location
- Cornwall.
Back to the forage radish, is "Tillage" radish available in the UK? Also I forgot DSV's forage radish which they call "Deeptill".