The only few problems the regional agriculture had was the use of fertilizers. The fertilizer would run off into streams which would then flow to the sea, or underground, then the sea. This caused slight algal bloom problems. The other problem was the use of fertilizers made of meat. This caused seagulls to come inland and try to eat that fertilizer. Meat is used to make some organic fertilizer, and it helps to grow plants, but there are some drawbacks to it. It is difficult for bacteria to digest, and sometimes attracts unwanted animals to come and try to eat the fertilizer pellets. This is what the seagulls are doing with the meat fertilizer in Reykjavik.
To avoid problems like algal bloom and changing the food web with the seagulls moving inland, is to not use fertiliser at all. Instead the crops will be genetically altered for growth and resistance pests. To do this, genetic engineering is used. In genetic engineering, the DNA of one organism is extracted, and is combined with the DNA of another organism, effectively giving the latter new traits. These traits can be to increase the chances of survival of the organism, resistance against pests, increasing the rate of growth of the plant, and changing the size of the plant. Here is a simple diagram that explains this process:This will be very successful, as it would not disturb the seagulls natural habitats and the food web, and it would eliminate the use of fertilizers so that algal bloom would not be a problem. Money is not a problem in this project as we get to completely redesign this city. However, money may be a limitation to the genetic engineering of the crops in the present, or as the world is right now, because it takes time to research then develop how to modify each crop separately, the same changes cannot be made to both potatoes and tomatoes. Time is also one of the limitations, as it may sometimes take a very long time for research to be done. Many expensive tools are required as well.