Applications [of agricultural research] in Cagayan Valley, Philippines

adoption de l'innovation agriculteur agricultores citrus crop losses cropping systems cultivo de temporal cultural methods culture pluviale environment environnement farmers filipinas ganado innovation adoption land use legumes leguminosas livestock mangifera indica medio ambiente mode de culture musa (bananas) musa (bananes) musa (bananos) oryza sativa philippines plant production plante racine rainfed farming recherche research root crops sistemas de cultivo technologie technology tecnologia utilisation des terres zea mays