Currently growing Big Budah's Cheese indoor under 4 * 600W HPS-HID lamps in a (12 x 12)ft room. The walls are painted white with matt emulsion. There is extraction through the ceiling using an 8" extractor and there is also extraction through a 10" acustic box fan on the floor which becomes bi-directional if necessary which is ducted to another room. The temperature of the room is no more than 28C and no less than 19C. The humidity seldom exceeds 48% and is often constantly around 44%. The air intake is via an open window at the back of the grow space behind the crop. It has rained outside and and the humidity had begun to rise a little during the downpoor, adjusting the 10" out-take compensated for this.
Recently there has been a minor infestation of white fly on around 10 plants which has been contained and eradicated using around a common greenhouse insecticide. The plants look near perfect health and appear to be going through the right stages of development.
The problem is a Browning appearance occuring where the Stigmas emerge from the Calyx. This appearance is symetically uniform through a few plants. I am wondering ir it is normal for this strain. I somehow don't think it is. It doesn't look like a growth. I don't have a microscope. I will, however, take a few pics as soon as I can borrow a tripod to get a steady close up shot.
How do bud rot spores spread throughout a plant?
How do I identify bud rot?
Are there and links to pics of bud rot that anyone can drop inks to that I can use to compare?
Any info will be appreciated.