Adoption of maize production technologies in Eastern Tanzania

adoption de l'innovation analyse input output augmentation de rendement aumento del rendimiento conduite de la culture control de plagas credit policies crop management cropping systems cultivation cultivo cultural methods demografia demographie demography descascarado development policies diffusion de la recherche diffusion of research drought resistance economic analysis economic viability empleo emploi employment environment environnement extension extension activities facteur de production fertilisation fertilizer application fitomejoramiento highlands industria de semillas industrie des semences innovation adoption inorganic fertilizers input output analysis land resources land use lowland lutte antiravageur manejo del cultivo marketing policies mechanization medio ambiente mode de culture pest control pest resistance petite exploitation agricole plant breeding plant production plant water relations pratique culturale precios prices prix production de semences production economics production factors projet de recherche recursos de la tierra relaciones planta agua relation plante eau rendement rendimiento research projects resistencia a las plagas seed industry seed production shelling sistemas de cultivo small farms socioeconomic environment statistical methods stem eating insects tanzania tanzanie technology transfer tierras bajas transfert de technologie utilisation des terres variedades varieties vulgarisation yield increases yields zea mays