I have read an article that a family of 4 can subsist on a farm of 1 hectare that would be a mix of orchard and vegetable farm plus animals. The article is a sort of prescription for rural folks to convert 1 hectare of their land for their food needs. The garden cum orchard can be tended by 1 person. So that means a family of 4 can still till their big farm for their usual farming and the 1 hectare would involve only the patriarch. The model has 5,000 square meters for a variety of vegetables particularly sweet potato and crops like corn. 3,000 square meters is reserved for trees of their choice that would include banana and papaya. The remaining 2,000 square meters is reserved for their housing and animal husbandry of at least 4 female goats or 2 female cattle plus 10 hens - all animals with corresponding male counterparts for reproduction.