Targeting the food insecure households in rural areas. A case study in Hai District, Northern Tanzania

agroecosistemas agroecosystems basic needs besoin fondamental cash crops cultivos alimenticios cultivos comerciales culture de rapport diagnostic rural rapide estructura social farm income farming systems food crops food security food supply highlands hogares households living standards niveau de vie nivel de vida plant production plante alimentaire pueblos rapid rural appraisal revenu de l'exploitation rural areas seguridad alimentaria social structure structure sociale suministro de alimentos tanzania tanzanie village villages zonas rurales zone rurale