Claim · model-written summary
Additional nitrogen fertilizer was less effective for early-season than main-season potatoes.
- Taxon
- potatoes
Solanum tuberosume0 - Treatment
- additional nitrogen fertilizere0
- Outcome
- less effectivee0
- Direction
- less effectivee0
- Comparator
- main-season potatoese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“additional nitrogen fertilizer in the early-season potatoes was less effective compared to that in the main-season potatoes.”
Title
Potato Yield Gaps in North Korea and Strategies to Close the Gaps
Yean-Uk Kim; Byun-Woo Lee; Sunggi Heu; et al. Agronomy 2020. doi:10.3390/agronomy10101605
Other claims from this paper (9)
- Observation Potato yield gaps were about 80% in both early and main seasons.
- Association Early-season potato yield was determined by water or nitrogen supply according to spring drought conditions.
- Intervention effect Vegetative-stage irrigation reduced year-to-year yield variation.
- Intervention effect Vegetative-stage irrigation reduced the yield gap, corresponding to 7.0 t ha−1 and 66.1%.
- Association Nitrogen supply was the main limiting factor for main-season potato yield.
- Association Heavy rainfall aggravated nitrogen leaching.
- Recommendation The authors recommend additional nitrogen as top dressing rather than basal dressing.
- Intervention effect Additional top dressing 50 days after planting was expected to raise main-season potato yield by 42.0 t ha−1 or 191.4%.
- Recommendation The authors recommend different agronomic strategies for the two cropping seasons in North Korea.