This research aims to create a growing plants without soil (Soilless Culture) a 1x1 meter 25 channels spaced no lower than the market price. With a quality suitable for the applications. The education system Hydroponics vegetable plantation in plant material (substrate culture), which selectively used to grow lettuce. In the period of 45 days compared to vegetables grown in soil. To calculate the break-even
results of the calculation of the cost of growing plants without soil, compared with the planting soil. The total cost per cycle of the plant. Growing in the soil was 1732 baht / crops without soil around a set of 3431 baht / around which to grow plants in the soil below. But when compared to the income statement at the breakeven point is that the crop must be planted in the ground around 9 you can return costs. But the growing plants without soil, planted just 6 cycles it takes to return costs.
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