Vanilla MC ticks 48 blocks per chunk in each game tick. MCServer ticks 50 blocks in each game tick. That's not the cause for the different growth speed.
http://www.minecraftwiki.net/wiki/Tick#Block_Ticks
I think vanilla slows the growth based on hydration - crops on a 1/4 hydrated block grow 4 times as slow, etc. Would make sense.
http://www.minecraftwiki.net/wiki/Tick#Block_Ticks
I think vanilla slows the growth based on hydration - crops on a 1/4 hydrated block grow 4 times as slow, etc. Would make sense.