Claim · model-written summary
Spinach under single chemical fertilizer treatment (0 OSR) had the highest nitrate content, 341.5 mg kg-1.
- Taxon
- spinach
Spinacia oleraceae1 - Treatment
- Single chemical fertilizer treatment (0 OSR)e1
- Outcome
- nitrate contente1
- Direction
- higheste1
- Value
- 341.5e1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“Single chemical fertilizer treatment (0 OSR) had the highest yield (54.4 and 24.8 t hm−2) and nitrate content (1118.8 and 341.5 mg kg−1) of Chinese cabbage and spinach”
Title
Evaluation of organic substitution based on vegetable yield and soil fertility
Guo-Qing Hu; Xi-Xian Ma; Xu-Hua Li; et al. Environmental Pollutants and Bioavailability 2022. doi:10.1080/26395940.2022.2064335
Other claims from this paper (8)
- Intervention effect Chinese cabbage under single chemical fertilizer treatment (0 OSR) had the highest yield, 54.4 t hm-2.
- Intervention effect Spinach under single chemical fertilizer treatment (0 OSR) had the highest yield, 24.8 t hm-2.
- Intervention effect Chinese cabbage under single chemical fertilizer treatment (0 OSR) had the highest nitrate content, 1118.8 mg kg-1.
- Intervention effect Vitamin C content of Chinese cabbage gradually increased as the organic substitution rate increased.
- Intervention effect Vitamin C content of spinach gradually increased as the organic substitution rate increased.
- Intervention effect Organic substitution had a positive effect on the main soil fertility indicators.
- Intervention effect The 50% and 75% organic substitution rates significantly improved vegetable quality and soil fertility, although they did not give the highest vegetable yield.
- Recommendation The authors conclude that it is feasible to increase or maintain soil fertility by organic substitution under abandoned farmland recultivation.