Valorization of vitamin C industrial byproduct as a soil amendment: Environmental benefits and enhancement of maize productivity.
Cheng H, Sun H, Gu J, Yang W, Gao M
Soil Health
If you grow corn, tomatoes, or heavy-feeding vegetables, a dilute organic liquid amendment — even a byproduct most factories pour down the drain — can meaningfully feed the soil microbes that unlock nutrients your plants actually absorb.
When factories make vitamin C, they're left with a liquid byproduct that usually goes to waste. Researchers tried dripping this liquid onto cornfields and found that it woke up the soil's microbial community — the tiny organisms that break down nutrients into forms plants can use. With more active soil life, the corn absorbed more carbon and nitrogen, photosynthesized more efficiently, and produced noticeably larger harvests over three consecutive years.
Key Findings
Soil dissolved organic carbon rose 5.75–16.73% and available nitrogen (ammonium + nitrate) increased 23–69% after vitamin C residue application.
Corn photosynthetic rate improved 12.88–33.41% and relative chlorophyll content rose 9.73–25.10%, indicating stronger plant vigor.
Grain yield increased 8.26–13.46% in 2023, with yield gains confirmed as stable through 2025.
chevron_right Technical Summary
Applying the liquid byproduct left over from vitamin C manufacturing to farm fields boosted corn yields by 8–13% and improved soil health, offering a practical way to turn industrial waste into a crop-production asset.
Abstract Preview
The mechanisms by which vitamin C residue after evaporation (RAE) regulates soil microbial processes and maize productivity remain unclear. A randomized complete block field trial was conducted in ...
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Maize, also known as corn in North American English, is a tall stout grass that produces cereal grain. The leafy stalk of the plant gives rise to male inflorescences or tassels which produce pollen, and female inflorescences called ears. The ears yield grain, known as kernels or seeds. In modern ...