[Annual report 1979-1980 of the agricultural service of Gitarama]

arachide arroz bananas banane banano ciencias forestales clima climat climate coffea colocase colocasia esculenta conservation des sols eleusine extension extension activities fish culture foresterie forestry froment fruits frutas haricot haricot commun igname ipomoea batatas kidney beans mais manihot esculenta manioc names papa patate douce piscicultura pisciculture pomme de terre potatoes rice riz rwanda soil conservation soja sorgho sorghum grain soybeans trigo vigna hosei vulgarisation wheats yams zea mays