ussurian pears on about day 7 from germination are getting

ussurian pears on about day 7 from germination are getting their first leaves. growing pears in pots indoors can be tricky, I always seem to get some fabraea leaf spot, aka leaf blight, black spot. pear inside usually completely die from it after growing a few sets of healthy leaves, outside it’s less of an issue. first time trying them in a greenhouse. good air circulation helps, clean medium helps, and probably a spray bottle of captan will help.