 It takes about 75 days for the grafting to be completed and to take out the seedling for transplanting; the yield from the grafted plant is generally about 30% more than from the non-grafted variety.Greenhouses in Taiwan and China produce two varieties of the grafted plants, Exporter 1 and Exporter 3, which are sold to the farmers at US$ 0.05 (2lps) per grafted plant without any profit margin, rotation of crops is widely practiced by the farmers; maize, "Solanaceae" and "cucurbitaceae" are the inter-crops used for crop rotation in the field.To control pests, barriers (wind breaks) of sorghum, king grass and sugar cane are created; "nematodes" is one of the pests which generally infests the agricultural lands, however the transplanted plants are resistant to this pest.