Claim · model-written summary
Economic analysis indicated 60 kg ha −1 as likely the most profitable seedbed N rate for most situations in winter oilseed rape.
- Taxon
- winter oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Outcome
- most profitable rate of seedbed Ne0
- Value
- 60 kg ha −1e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“winter oilseed rape”
e0“Economic analysis showed 60 kg ha −1 as likely to be the most profitable rate of seedbed N for most situations”
Title
Seedbed fertilizer requirements of winter oilseed rape
Michael R. J. Holmes; Alan M. Ainsley Journal of the Science of Food and Agriculture 1978. doi:10.1002/jsfa.2740290802
Other claims from this paper (9)
- Intervention effect Seedbed N raised average seed yield of winter oilseed rape from 2.711 to 2.881 ha −1 when 200 kg ha −1 N was given in spring.
- Intervention effect P fertilizer increased yield significantly on soils with low or moderate available soil P.
- Intervention effect There was little response in yield to K fertilizer on soils of high or medium K status.
- Intervention effect S applied to the seedbed as calcium sulphate did not increase yield.
- Intervention effect Seedbed N decreased seed oil content slightly, not always significantly.
- Intervention effect Seedbed P, K and S had no effect on seed oil content.
- Observation Nutrient removal in the seed of an average 3 t ha −1 crop would be 90 kg ha −1 of N.
- Observation Nutrient removal of P in the seed of an average 3 t ha −1 crop would be 17 kg ha −1 (40 kg ha −1 P 2 O 5).
- Observation Nutrient removal of K in the seed of an average 3 t ha −1 crop would be 17 kg ha −1 (20 kg ha −1 K 2 O).