[murch]

I have just picked my first radishes and although they were ready for picking some of them were almost hollow inside. Any one got any ideas.

Murch

[michael brenock]

this is probably due to Boron deficiency in the soil. can be prevented by applying Borax (a compound containing Boron) before sowing any brassicas (cabbages or turnips etc). Usually the centres turn brown or black but can be hollow in fast growing crops like radishes. Always more severe in dry weather. An artificial fertiliser 7 6 17 plus Boron is an excellent way to prevent the deficiency. Another product Solubor to be sprayed on after or before sowing is usually available from agricultural supply stores.
Boron is a naturally occurring element but some soils do not have enough present.
michael brenock horticultural adviser (retired)