Claim · model-written summary
Selection for higher harvest index and N harvest index could improve grain yield and nitrogen-use efficiency of grain amaranth.
- Taxon
- grain amaranth
Amaranthus hypochondriacuse0 - Treatment
- selection for higher HI and NHIe1
- Outcome
- grain yield and nitrogenuse efficiencye1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the response of grain amaranth to applied N, P, and K”
e1“This suggests that selection for higher HI and NHI could be effective in improving grain yield and nitrogenuse efficiency of grain amaranth”
Title
Nitrogen Fertilizer and Cultivar Effects on Yield and Nitrogen‐Use Efficiency of Grain Amaranth
A. Elbehri; D.H. Putnam; M. Schmitt Agronomy Journal 1993. doi:10.2134/agronj1993.00021962008500010023x
Other claims from this paper (14)
- Intervention effect Grain amaranth showed no yield response to P and K applications when soil tests were high.
- Intervention effect Grain amaranth responded linearly to applied P at one location with low initial soil P.
- Observation Grain yield of grain amaranth ranged from 794 to 1980 kg/ha across environments.
- Intervention effect Grain yield of grain amaranth responded to N in most environments.
- Observation Forage yield of grain amaranth ranged from 6.1 to 16.6 Mg/ha.
- Intervention effect Forage yield of grain amaranth increased at higher N rates.
- Intervention effect Lodging of grain amaranth increased with N application at all locations.
- Intervention effect Fertilizer N increased pre-flowering N accumulation in grain amaranth.
- Intervention effect Fertilizer N did not increase post-flowering N accumulation in grain amaranth.
- Observation Nitrogen-use efficiency of grain amaranth ranged from 3.48 to 7.91 kg/kg across cultivars and environments.
- Association Nitrogen-use efficiency of grain amaranth decreased with increased soil N, mainly because of decreasing N-uptake efficiency.
- Observation Grain amaranth had a harvest index of 9–15%.
- Observation Grain amaranth had an N harvest index of 12–26%.
- Mechanism Grain amaranth is relatively inefficient in N use, primarily because of its low harvest index.