looking very good bro excellent job. as for the plant i dont think its nutes the plant looks very happy. is this plant from seed? by this i mean how old is it. seed plants can get wind burn alot easier then older plants. is it very windy up there? could the top have snapped or been bent over, maybe it just died off after it was pinched for super cropping? just some ideas. good luck i cant wait to see all these strains in flower