Just to add that you can use food to help meet the node bonus stat requirements. HQ Jhinga Curry will give you up to 136 additional Gathering so while it's not quite enough if you're currently at 3715, it would be if you can get to 3764.

Also, the bonuses can go higher. What you see listed is only the first level of bonus. I never did figure out the exact number for +2 yield but I suspect it's around 4000 Gathering. To get +3 yield, 4100 Gathering is needed.

For nodes with +gathering attempt, it is 900 GP for +1 attempt and 950 GP for +2 attempts.

It will require pentamelded HQ Indagators to reach the higher bonuses, which most players won't find worth it.