He CAN grow big swedes!

Wow!  Can you imagine trying to cut that up (you'd need a chainsaw)? 

he most probably fed it Actively aerated compost teas ....

my veg and garden plants are all a lot bigger (and healthier) than normal since brewing the stuff (I supercharge mine by adding extra worm humis, alfalfa, fish hydrolsate, seaweed extract, humic and fulvic acid,  bat guano and a few more ingredients bought from hydroponic stores ....

, plus I topdress with stuff like volcanic rock dust 

watch this video (the guy who has several world records):

GaMNAfaebNc

I know my limits.