Hop bine base issue

[Sebas83]

Hi all. I'm having a hard time finding an answer to this so maybe y'all can help. I'm in NY state and I'm growing two varieties(first time grower), Mt. Hood and Sterling. My sterling hop has an issue at the base of the bine. It's brittle, dark, and thin for about 4". After that, it's a healthy plant but growing slowly. The leaves are not as deep green as the Mt. Hood.

I will add pics when I get home.

Any thoughts?

Thanks in advanceView attachment ImageUploadedByHome Brew1467244391.697743.jpg