Re: [CH] rocoto
Brent Thompson (brent@hplbct.hpl.hp.com)
Mon, 12 Jul 2004 14:10:24 -0700
> I've not yet tried a pH of higher than 7, but for my local conditions 6.4
> seems better than 6.9. In one of Bosland's books he states that most
> capsicums are grown in soil with a pH of 7.0 - 8.5 and to me that seems not
> an endorsement, but a statement. In the same book he states that
> greenhouse plants are kept at a pH of 5 to 6 and a humidity level of
> 60-80%. Temps are kept at 24°C night & day. Jean Andrews states that 5.5
> to 6.8 pH is ideal. Next year I'll try some plants at 7.5 or 8. Please
> keep in mind that I am not disagreeing with Brent, as I really don't know.
Great, so it should be safe to combine all these quotes and say that pH of
5.5-8.5 should work fine for chiles, with lower half of this range best
(i.e. slightly acidic to neutral).
But below 5.5 or maybe 5, I could imagine problems, and "too much" peat
would lower pH below 5, far enough below to imagine problems. So watch out
for too much peat, or in the other direction, too much supplemental
calcium/dolomite.
--- Brent