Prospects of employment of Japanese larch (Larix leptolepis) in Czechoslovak forestry

agronomic characters arbre arbre forestier arbre pour bois de construction biological control bois breeding breeding aims breeding methods checoslovaquia conifere conifers crops cultivos czechoslovakia disease resistance economic plants europa europe forest trees gimnospermas gymnosperme gymnosperms hybridation hybridizing larix larix decidua larix leptolepis lutte biologique madera methode methods objetivo de mejoramiento pest control methods pest resistance pinaceae plantas plante plante de culture plante pour construction plants recherche research resistance to injurious factors resistencia a la enfermedad resistencia a las plagas structural crops timber trees trees wood