CPC A01G 33/00 (2013.01) [C05F 11/00 (2013.01); C05G 5/23 (2020.02); C05G 5/27 (2020.02); C05G 3/00 (2013.01)] | 17 Claims |
1. A method for preparing a liquid composition comprising living green microalgae to improve plant growth, wherein the method comprises:
culturing green microalgae in an open pond in an aqueous medium at pH 10 to pH 12, the medium comprising less than 5 mM sodium, and supplying hydrogen carbonate as the inorganic carbon source;
harvesting the green microalgae by sedimentation or centrifugation to obtain a liquid composition comprising living green microalgae, the liquid composition having a dry matter content in the range of 0.5% w/w to 10% w/w and a sodium content of less than 5 mM.
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8. A method for promoting plant growth, comprising applying the liquid composition obtained by the method of claim 1 to a plant to promote growth of the plant.
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9. A liquid composition comprising living green microalgae, maximally 5 mM sodium and a dry matter content in the range of 0.5% w/w to 10% w/w.
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12. A method for improving growth, nutrient assimilation, efficiency of metabolism or photosynthesis of a plant, seed, tuber or bulb, comprising applying the liquid composition of claim 9 to a plant, seed, tuber or bulb to improve growth, nutrient assimilation, efficiency of metabolism or photosynthesis.
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