Tuesday, 11 May 2010
I haven't sprayed for fungal diseases for quite a few years. Very few of the varieties I grow seem to be affected by fungal ills, but those that do are affected badly enough for spraying to be worthwhile. The worst is pear Santa Claus; the fruit that set on the cordon was completely 'corked' by infection, and the arch was almost completely defoliated, so these really need to be treated or grubbed up. Conference is affected by some sort of dark smut which doesn't affect the internal fruit quality but causes bad coarse russeting and discolouration of the skin. So I've just treated these for the first time, and will do so again at appropriate intervals, dependent on weather conditions. I use a saturated solution of Bordeaux mixture, with a tiny squirt of washing up liquid as a wetting agent. Conditions were perfect today, absolutely no breeze at all and no rain predicted.