Plant activator containing amino acid or salt thereof, and oligosaccharide, and use thereof
Physiological processes in plants are regulated and reinforced, and crop vitality, yield, quality and post-harvesting storage life are improved. A plant vitalizer containing an amino acid or its salt and an oligosaccharide is applied to plants.
1 . A plant vitalizer comprising:
at least one amino acid or its salt, wherein the at least one amino acid is glycine;
a chitin oligosaccharide; and
at least one oligosaccharide selected from the group consisting of a cellooligosaccharide and a xylooligosaccharide,
wherein the chitin oligosaccharide and the at least one oligosaccharide are the only oligosaccharides in the plant vitalizer, and
the total content of the chitin oligosaccharide and the at least one oligosaccharide in the plant vitalizer is 5 to 10 mass %,
wherein the chitin oligosaccharide is a chemically or enzymatically modified chitin, and
wherein the chitin oligosaccharide comprises a compound of
wherein some of acetyl groups (COCH 3 ) of the compound are shed, leaving NH 2 groups, and a percentage of deacetylation is no greater than 30% of a total chitin oligosaccharide.
2 . The plant vitalizer according to claim 1 , wherein the at least one oligosaccharide is a cellooligosaccharide and a xylooligosaccharide.
3 . The plant vitalizer according to claim 1 , wherein the total content of the at least one amino acid or its salt in the plant vitalizer is 2.5 to 30 mass %.
4 . The plant vitalizer according to claim 1 , which further comprises a spreading agent.
5 . The plant vitalizer according to claim 1 , consisting of
the at last one amino acid or its salt;
the chitin oligosaccharide
the at least one oligosaccharide; and
water.
6 . The plant vitalizer according to claim 1 , consisting of
the at last one amino acid or its salt;
the chitin oligosaccharide;
the at least one oligosaccharide;
water; and
at least one additive selected from the group consisting of an antiseptic agent, a spreading agent, an anti-settling agent, a thickener and a filler.
7 . The plant vitalizer according to claim 1 , wherein the cellooligosaccharide is a cellooligosaccharide that comprises oligomers with a glucose polymerization degree of 3 to 6.
8 . A plant cultivation method, which comprises applying the plant vitalizer according to claim 1 to a plant.
9 . The method according to claim 8 , which comprises applying the plant vitalizer to a plant at a concentration so that the total content of the chitin oligosaccharide and the at least one oligosaccharide is 0.1 to 500 ppm by mass.
10 . The method according to claim 8 , wherein the plant vitalizer is applied to the plant by foliar application.
11 . The method according to claim 8 , which comprises applying the plant vitalizer to a plant at a concentration so that the total content of the oligosaccharide is 0.1 to 100 ppm by mass.
12 . A method of producing a plant or a part thereof having increased elicitor activity compared to the same without application of the plant vitalizer according to claim 1 , wherein the method comprises cultivating the plant or part hereof by applying the plant vitalizer to the plant or the part thereof.
13 . The method according to claim 12 , wherein the elicitor activity is determined by measuring glucanase production in the plant.
14 . A fertilizer composition comprising:
a plant vitalizer according to claim 1 ; and
water.