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OBA is an important type of vegetable dishes are popular with Japan consuming more domestic Thailand. Make the demand even more OBA. OBA has a retail price each 0.5 – 1 baht, but in the winter season, with short day length, the price will be higher, since OBA prototype from Aoba is a flowering plant, because it is a day shorter, making the output decrease OBA price is higher. Solution implemented by Aoba planted in conjunction with the use of light stretching length of days in which to grow plants in a greenhouse so popular, how to grow plants in the planting material. To provide water and nutrients in nutrient solution format because it offers greater than operating plants in the soil. Therefore, it has made an experiment to study the effect of concentration of nutrient solution formula Enshi on growth and yield of Aoba. By removing the seeds, planting the seedlings come Aoba is then moved from the material planted saplings, lint-free cloth, coconut. Inside the House, then let the nutrient solution formula, Enshi, different concentrations of 5 level is 2.4 1.8 3.6 3.0 and 1.2 mS/cm, respectively. It found that concentration 2.4 3.0 and 3.6 mS/cm, the height of most trees and the concentration and 2.4 1.8 mS/cm, width canopy most statistically significant. Section 2.4 and 3.0 concentration mS/cm yield (the number of) the best.
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