Growing Gerbera as a biennial crop from cuttings and meristem cultures

arena biennials bouture calidad crop yield cultivo de meristemas cuttings esquejes fertilisation fertilizer application gerbera growing media herbaceous ornamentals irrigation israel laine de roche lana mineral meristem culture plantas bienales plante bisannuelle quality rendement des cultures rendimiento de cultivos riego rockwool sable sand substrat de culture substratos de cultivo variedades varieties