Claim · model-written summary
Adding clover increased forage yield by 34.1% at the 112 kg/ha N rate.
- Taxon
- perennial grassese4
- Treatment
- clover was addede4
- Outcome
- average increase in forage yieldse4
- Direction
- increasee4
- Value
- 34.1%e4
- Qualifier
- at the 0, 37, 112, and 336 kg/ha N ratese4
- Comparator
- perennial grassese4
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Verbatim
e0“An investigation measured the influence of white clover on grass forage yields where perennial grass species were grown at four N rates with and without white clover”
e4“The average increase in forage yields when clover was added to the perennial grasses at the 0, 37, 112, and 336 kg/ha N rates was 218.9%, 93.0%, 34.1%, and 0.2%, respectively”
Title
Forage Yields of Five Perennial Grasses with and without White Clover at Four Nitrogen Rates
James W. Dobson; E. R. Beaty Journal of Range Management 1977. doi:10.2307/3897813
Other claims from this paper (9)
- Intervention effect White clover and perennial grass mixtures yielded more forage than grass fertilized with N.
- Intervention effect Adding white clover significantly increased forage yields of perennial grasses at N rates up to 112 kg/ha.
- Intervention effect Only at 336 kg N/ha were average yields of clover/grass and grass/N comparable.
- Intervention effect Adding clover increased forage yield by 218.9% at the 0 kg/ha N rate.
- Intervention effect Adding clover increased forage yield by 93.0% at the 37 kg/ha N rate.
- Intervention effect Adding clover changed forage yield by 0.2% at the 336 kg/ha N rate.
- Observation Clover production was concentrated in the first 7 months of the season and dropped sharply in August and September.
- Intervention effect Average clover/grass yields were consistently higher over the 4 years than grass/N yields.
- Recommendation White clover should be included in grass mixtures in Southern pastures to reduce the need for N fertilization.