Claim · model-written summary
Nitrogen application increased mean sorghum yield by 230% relative to no N
- Treatment
- N applicatione0
- Outcome
- sorghum yielde0
- Direction
- increasede0
- Value
- 230%e0
- Qualifier
- 0.69 Mg ha −1e0
- Comparator
- no N appliede0
SorghumNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Mean sorghum yield with no N applied (N 0 ) was 0.69 Mg ha −1 and was consistently increased by a mean of 230% with N application”
Title
Sorghum Response to Fertilizer and Nitrogen Use Efficiency in Uganda
Kayuki C. Kaizzi; John Byalebeka; Onesmus Semalulu; et al. Agronomy Journal 2012. doi:10.2134/agronj2011.0182
Other claims from this paper (13)
- Observation Mean economically optimal N rates were 34 to 18 kg ha −1 N at cost to price ratios of 10 to 30
- Observation Mean economically optimal P rates were 11 to 2 kg ha −1 P at cost to price ratios of 10 to 50
- Intervention effect Sorghum did not respond to potassium application
- Intervention effect Net economic returns were greater for nitrogen than phosphorus application
- Intervention effect Mean aboveground biomass N rose from 31.3 to 75.9 kg ha −1 at 90 kg ha −1 N
- Intervention effect Grain N concentration at the EONR was 1.67% and higher than at N 0
- Intervention effect N harvest index at the EONR was 53.2% and higher than at N 0
- Intervention effect Internal NUE at the EONR was 31.8 kg kg −1 and higher than at N 0
- Intervention effect Mean recovery efficiency declined with increased N rate and was 135% at the EONR
- Intervention effect Partial factor productivity declined with increased N rate and was 79 kg kg −1 at the EONR
- Intervention effect Agronomic efficiency declined with increased N rate and was 52 kg kg −1 at the EONR
- Observation The authors judge fertilizer N use to have high profit potential for smallholder sorghum in Uganda
- Recommendation The authors recommend policies reducing fertilizer cost and improving grain marketing to raise smallholder sorghum production