摘要:
This invention relates to enhancing plant productivity employing a method and improved compositions containing water-soluble crosslinked polyamino acids having a weight average molecular weight of a size larger than about 1,500. More particularly, crosslinked polyamino acids enhance plant productivity when supplied to the plant directly as the free acid or salt thereof or hydrolyzed from a crosslinked precursor of the crosslinked polyamino acid by the method disclosed. Particularly suitable for this purpose are water-soluble, crosslinked polyaspartic acid, and salts thereof and hydrolyzed crosslinked polysuccinimide.
摘要:
Plant productivity in a hydroponic medium is enhanced by the addition of a water-soluble, non-biodegradable, non-peptidal polymeric acid having a molecular size larger than about 1,500 Daltons.
摘要:
This invention relates to enhancing plant productivity employing a method and improved compositions containing water-soluble amino acid co-polymers having a molecular size larger than about 1,500 Daltons.
摘要:
This invention relates to enhancing plant productivity employing a method which supplies to a plant a water-soluble co-polymeric acid having a molecular size larger than about 1,600 Daltons.
摘要:
Polyaspartic acid is produced by hydrolysis of anhydropolyaspartic acid that has been produced by thermal condensation polymerization of L-aspartic acid. Conversion in excess of 80 percent is achievable utilizing "temperature vs. time" profiles.