Feeding sweetcorn

What are the requirements for sweetcorn? I tried looking on google and all I could find was the nutrition of sweetcorn, not what plant food it needs. I have some growmore granules, chicken manure pellets or blood fish and bone. The funny thing is half my sweetcorn looks well fed and half doesn't. The half that looks really healthy happens to be growing where I burned all my rubbish in early spring so wood has has done it wonders! It like theres a circle of healthy plants

Thanks!