| 摘要 |
PURPOSE:To obtain a plant growth promoter, containing an extract separated from Euglena cells with methanol as an active ingredient and excellent in growth promoting action on plants without exhibiting inhibitory action on soil organisms, the plants, etc., at all. CONSTITUTION:Euglena cells obtained from euglenoids such as Euglena.gracilis, Euglena.viridis or Euglena.intermedia are dipped in an ethanol-water mixture solution and allowed to stand at about 5-20 deg.C or slowly stirred and extracted. The resultant ethanol-water mixture solution is then distilled under reduced pressure to separate the ethanol and provide an extract solution containing active ingredients. The obtained extract solution is subsequently used as a plant growth promoter. That is the aforementioned extract solution may simply be sprayed on the objective soil. The above-mentioned plant growth promoter is especially effectively used for gramineous plants such as rice plant or lawn or orchids such as dendrobium. |
