Tue Nov 23, 2010 10:29 pm by Backburner
No it is completely unpractical to include level 10 oasis crop consumption when calculating troop maintenance.
Level 10 oasis are rare and even when you do find one people will constantly try to steal it off you, the oasis changes hand multiple times in a day and even then you must also be on guard as to maintain the oasis level to not drop below 10.
Just because level 10 oasis exist doesn't mean anyone would use it as a stable source of food, so no, it is not possible in practice to use level 10 oasis to maintain your army. If you do then you're just asking for starvation.