This topic contains 4 replies, has 2 voices, and was last updated by kate robinson 10 years, 9 months ago.
-
Posts
-
I have it too Kate, really annoying as most of the fruit look fine from on top.
The classic advice is "Caused by irregular watering". But I am watering the same and have barely seen it for years and so i suspect, in this unusually hot spell, that it is from "irregular heat and light levels", which means weather, beyond our control.
However two things I have noticed are that some varities are more susceptibe, especially Black Russian, and that it is worse in my greenhouse than the tunnel (more heat and light in the latter).
Do you have it on any variety in particular?
Interesting that your greenhouse plants are more affected, so i think that excess heat stress is perhaps one cause. But also the main time of BER happening is at mid-maturity when plants already have some fruit and need lots of nutrients esp calcium to make the second and third truss, so your tunnel toms may not be there yet?
It seems that main cause is lack of calcium from soil too dry OR too wet. Adding calcium to soil or spraying on leaves is reckoned to be ineffective. I wonder if I may have been overwatering in that Homeacres soil appears to drain less readily than Lower Farm soil. I should have twigged that, but to be sure I am buying a soil moisture meter from eBay for £15, will let you know how it works!
You must be logged in to reply to this topic.