What problem is this?

Are you feeding?

 

My guess is lack of nutrients combined with being root bound. That container is quite small for a flowering plant. When plants get root bound, the lower foliage will die off to provide adequate resources for the new growth, which tends to leave plants bare near the bottom of the stalk.

EDIT: also I'd say you have like 5 weeks of flowering til harvest.

 

If plant is root bound at this point u can still take it through flower, just feed, feed , feed. A plant can start to digest itself pretty quick so it can keep its flowers alive.

 

Its hard to say... bt from size of plant I would guess 'round 3oz dried

 

more like 1/2oz
ya Id say various deficiencies, repotting would help.

 

sure... easily 5 weeks left, thats plenty of time to grow roots.

 

Nah dude if u took the bud off it rite now you'll prolly have a 1/2 oz bt with 5 more wks of flowering (if u can keep her alive) you'll pull off more then 2oz. That thing has 4 tops. Plants put on a lot more weight the last two weeks of flowering.

 

The lower leafs tend to yellow during flowring.

 

Give her something with a good amount of phosphorus and she'll blow up.