You make a 3x3 square and dig out the middle block and till the 8 surrounding blocks. Fill the center with water and the edges with seeds. Make a giant 60x60 square, with 400 holes. This makes a layer. Each 3x3 yields 8 wheat. There are 400 of these patterns so you will end up with 3200 wheat, assuming all plants are good. However, realistically it should yield h=harvest; 3000≤h≤3200 and you can make the water fall, platform to platform, so you only need a mod/op to place 400 water blocks. And 400/12800 is 1/32, so you need only 1 bucket of water to feed 32 pieces of wheat. Also make the platform spacing 2 to prevent greifers making you replow the whole thing by trampling it.
When I punch those numbers into my calculator it makes a happy face 
i know that design but i mean another
that u pull a lever and it will harvest all at the same time
not with hand
but
Wow -That was a monster to work on. And the rain held out right until the very last minute too.
Good job on the layout 
Nooo You Good job you worked as a Beast !! :p
I could help you though im not gonna be on this server for 5 days 
kk but i will make it bigger but for now it is good !
Have a look at my home go upstairs the ladders , follow the cobble path and see it it is huge !!!
All thanks to The best workers !!!
