How do I treat over grown ground?? I want to grow potatos this spring, and I'm putting in CARA...

I want to grow potatos this spring, and I'm putting in CARA kernel as they taste wounderful around Aug'
I don't enjoy land myself, but my friend give me an big patch,It's quite over grown, also I cleared an other patch ending year but there be an awfull amount of worm in the spuds.
How do I stop this from taking place this year.????
Should I cover the ground with black plastic be fore digging,
Should I use lime, and what amounts
Thanking you
Tom M
Helpzzzzzzzzzzzzzzzz?
Answers:    I nick it that the worm you refer to is wireworm (click beetle larvae) which can be cleared by using a sulphur based powder(can`t remember the name) Is this years patch close to where on earth you had a problem ultimate year? Spray with a Glyphosate base herbicide(roundup-clinic) now,as it will pilfer weeks to work at this time of year. When the vegetation starts to ashen,dig it within.(not heavy,woody stuff) and cover next to plastic to warm the ground. Do not lime for potatos, it cause scab! For an early crop,try Sharpes Express-should be in place about untimely July.
How does one remove a tree hugger?
Not sure about the worm problem, but covering the ground beside dark plastic sheet will shoot off any unwanted foliage.I should procure it down soon before the modern growth starts.