Why not to lobby your farms ?

You shouldn’t lobby your farms. Not that you should lobby somebody elses farm, your league probably have rules against that. What I mean is that if a city produces enough to make it worthwhile for you to plunder (everything fully built with 2 oases), then lobbying it to make it your city will not give you any increase in your resource production. All you will be doing is trading in a farm for another sub-city that you have to manage. A better alternative that will increase your production is to find a city that is too small and undeveloped to farm but is an ideal location – a 9c/15c with 2 50% Grain in the 7×7. This way you get a new city without losing a productive farm.

How to find the growth rate of your farm ?

To find out the hourly resource production of a city, send an attack large enough to plunder all of the resources (battle efficiency 98% or less). After you deploy this attack immediately send out a small one from the same city. Click Scheduled Deployment; add 1 hour to the current time, then select OK. The amount of plundered between attacks will be equal to the hourly production of the city. This can be used to see how much a sub-city produces and if it is worth lobbying (a 15c sub-city making 10k+ food is not going to improve much when lobbied). You can also use this to estimate the resource field levels of a Main city. I have seen too many players take an oasis off of a Main city farm, resulting in lower total food production. A 6c Main only needs level 13 farmlands to produce the same amount of food as a 15c sub-city. Taking a 50% oasis off of a 6c with level 15 farmlands equals -3,600 food/h for that city. Make sure you get a production increase with every action.