Paul is a big advocate of chicken paddocks and I am incline to agree with his reasoning. I had the idea that an annual garden could follow behind the chickens to not only stack two functions in one space but also enjoy the pest control, perennial weed control and fertilization that chickens would provide. I then realized that while we are stacking functions, chicken feed can be planted in front of the chickens. Chickens follow cover crop/chicken feed, cover crop/chicken feed follows people food and people food follows chickens (diagram a). The paddock is rotated every 2 months so that 1) the chickens have access to the entire area over a growing season and 2) even the longest growing vegetables are able to finish growing before the chickens move in (the cover crops can be relay-seeded for crops like tomatoes that may be in the ground for longer than 4 months).
Simple in theory, but the details get complicated. I came up with a list of problems and solutions to them:
The paddock rotates too fast for long-growing crops to mature and for potential pathogens in chicken poop to die: the ones that take the longest are planted in the most recently vacated paddock. This way they have up to 4 months to mature and pathogens have up to 4 months to die off. Fast maturing crops can be planted in the least recently vacated paddock.
The chicken food/cover crop is either inadequate to feed the flock (necessitating external feed input) or is more than addequate (becoming weedy): I have access to lots of cardboard and organinc materials. I will smother everything with cardboard hot-composted
compost that will have killed off seeds. combined with the fact that each newly-vacated paddock will have been subjected to chickens for 5 2-month cycles means that weeding chores should be minimal.
Access to chicken coop: The chicken coop will be in the "trees" section. This is also where the chickens will overwinter. I will keep all the unfinished compost in here as well so that the chickens can forage for bugs over the winter. I am hoping that this will replace the need for chicken feed over the winter months. The reason there are 8 paddocks, 2 being dedicated to vegtables and 1 to cover crops is so that there is always at least one chicken occupied paddock that can provide access to and from the coop.
Those of you with more experience than I, are there any other problems I am overlooking?
For those of you who want to know: I am in PNW Washington with heavy clay soil.