Hiya,
In a word: No.
As mentioned before maybe in transport but a good rule of thumb for planters is 20 to 25hp per row depending on depth and soil type. 20 x 6 = 120HP, about double what the 4720 has. 15HP per row may get you by if your planting shallow and your soil is loose/sandy but you will be working the tractor hard. You need at least to be in the 5000 and better off in the 6000 series to pull a 6 row effectively.
My 2 cents
Tom
Are you telling me these new 42 row planters are being pulled by 840-1050hp tractors?
I was curious if a 4720 could pull a 6row planter?
Thanks