Claim · model-written summary
Relative yield of potato was significantly related to CMR and soil nitrate, measured 40 to 50 days after planting, by linear-plateau functions.
- Taxon
- potato
Solanum tuberosume0 - Compound
- soil nitratee2
- Outcome
- Relative yielde1
- Qualifier
- measured 40 to 50 d after plantinge1
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proper N management is essential to prevent N losses and ensure high potato ( Solanum tuberosum L.) yield and quality”
e1“Relative yield (RY) was significantly related by linear‐plateau functions to CMR and NO 3AEMs measured 40 to 50 d after planting”
e2“soil nitrate adsorbed on anion exchange membranes”
Title
Efficiency of Controlled‐Release Urea for a Potato Production System in Quebec, Canada
Noura Ziadi; Cynthia Grant; Nicolas Samson; et al. Agronomy Journal 2011. doi:10.2134/agronj2010.0298
Other claims from this paper (9)
- Intervention effect Marketable yield and the yield of jumbo and medium size classes significantly increased with N fertilization up to 150 kg N/ha in potato.
- Intervention effect Yields were higher with CRU at 150 kg N/ha than with CAN at 150 or 200 kg N/ha in potato.
- Intervention effect Nitrogen fertilization increased chlorophyll meter readings (CMR) in potato relative to the unfertilized control.
- Intervention effect Nitrogen fertilization had no effect on the specific gravity of potato tubers relative to the unfertilized control.
- Intervention effect The CRU released more nitrate during the growing season in potato, as indicated by higher soil nitrate adsorbed on anion exchange membranes.
- Intervention effect CRU had higher nitrogen use efficiency (NUE) than the other treatments in potato.
- Observation A CMR value of 41.9 is the critical value above which the probability of a potato yield response to additional N is low.
- Observation A NO3AEMs value of 15 μg cm −2 d −1 is the critical value above which the probability of a potato yield response to additional N is low.
- Recommendation Controlled-release urea is a promising N source for increasing the yield and NUE of potatoes produced in eastern Canada.