Liquid mulching agent composition containing seaweed extract

A liquid mulching agent composition, comprising:

• a seaweed extract;
• a first component comprising at least one selected from the group consisting of humic acid, fulvic acid, and charcoal;
• a second component comprising at least one selected from the group consisting of sodium alginate, polyvinyl alcohol, keratin, and sodium silicate;
• a third component comprising at least one selected from the group consisting of a waste brewery yeast byproduct, a coffee waste extract, an extract from citrus pomaces, and an extract from rice wine residue;
• and
• a fourth component that is a mixture of carboxymethylcellulose (CMC) and propylene glycol alginate,
• wherein the liquid mulching agent composition comprises, based on a total weight thereof, 60 to 85 wt % of the seaweed extract, 1 to 15 wt % of the first component, 3 to 25 wt % of the second component, 1 to 18 wt % of the third component, and 0.05 to 5 wt % of the fourth component.