3-4-2 Effect of root zone irrigation system on mass production of sweetpotatoes

Abstract

The innovation is required to production of a large amount of biomass by cultivation of domestic photosynthetic plant and to replace fossil fuels. The author has found that the best crop is sweetpotato cultivated in multilayer system. So far, the 4-layers cultivation method using a triangular shelf showed that it is possible to sweetpotato production of about 20kg/m². This is eight times the amount of domestic average yield (2.5kg/m²). However, the soil hygroscopic level decreased quickly and the production of the sweetpotatoes suppressed significantly, were found by the multi-layer cultivation system. Therefore we investigated the influence of the basic irrigation state to produce sweetpotatoes. As the result the yield of sweetpotatoes cultivated with root zone irrigation system increased to 179% of the amount of the past. In addition, the root zone irrigation system was effective to increase the weight of the mass production of sweetpotatoes by increasing the density of the vine seeding per area.