Claim · model-written summary
Increasing N rate increased total and marketable tuber yields of potato.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- N ratee1
- Outcome
- total and marketable tuber yieldse1
- Direction
- increasede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of rate and timing of N fertilizer application on tuber yield, tuber size distribution and tuber specific gravity of potato (Solanum tuberosum L.)”
e1“Increasing N rate increased total and marketable tuber yields in both sites”
Title
Response to added nitrogen of a continuous potato sequence as related to sand thickness over clay
A. N. Cambouris; B. J. Zebarth; M. C. Nolin; et al. Canadian Journal of Plant Science 2007. doi:10.4141/p06-126
Other claims from this paper (11)
- Observation The N rates required to optimize economic return of potato ranged from 167 to 239 kg ha -1 among years and sites.
- Intervention effect Nitrogen fertilizer applied all at planting or all at hilling decreased potato tuber yields compared with split N application.
- Observation The percentage of N rate applied at planting that maximized potato marketable tuber yield varied among years from 34 to 61%.
- Intervention effect Applying N at planting allowed a potato marketable tuber yield increase of 2 to 20%.
- Association The proportion of large potato tubers was higher in the DMZ site, with greater depth to the clayey substratum, than in the SMZ site.
- Association Tuber yield and tuber N uptake of potato were higher in the SMZ site than in the DMZ site when no fertilizer N was applied.
- Association Potato tuber yield was more responsive to fertilizer N rate in the DMZ site than in the SMZ site in one year.
- Recommendation The differences between the two sites are not sufficient to justify different fertilizer N management for potato.
- Observation The two sites frequently differed in potato tuber yield, tuber size and specific gravity.
- Observation The optimal N rate and N timing for potato were similar in the two sites.
- Recommendation The site differences may justify different potato management practices, such as nutrient management and seedpiece spacing, for chip processing.