Claim · model-written summary
Without FYM, phosphate fertilizer increased carrot yields.
- Taxon
- Carrots
Daucus carotat0 - Treatment
- phosphatee0
- Outcome
- yieldse0
- Direction
- increasede0
- Qualifier
- In the absence of FYMe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the absence of FYM, more than 31 lb. per acre N as Nitrochalk depressed yields, whereas both phosphate and potash fertilizers increased them”
t0“Carrots”
Title
The Effects of Different Manurial Treatments on The Yield and Mineral Composition of Carrots
F. Haworth; T. J. Cleaver; J. M. Bray Journal of Horticultural Science 1966. doi:10.1080/00221589.1966.11514178
Other claims from this paper (9)
- Intervention effect Farmyard manure at 20 tons per acre per crop gave consistently higher carrot yields than fertilizers alone.
- Association The yield increases from farmyard manure were greater in dry years than in wet years.
- Observation The yield difference between manured plots and fertilizer-treated plots did not increase consistently after 1959.
- Mechanism The authors interpret the plateau in the yield difference as showing that a saturation level of the factors causing the yield increases had been reached.
- Intervention effect In the presence of FYM, N, P and K fertilizers had only small effects on carrot yields.
- Intervention effect Without FYM, more than 31 lb per acre N as Nitrochalk depressed carrot yields.
- Intervention effect Without FYM, potash fertilizer increased carrot yields.
- Intervention effect Carrot plants from FYM plots contained about twice as much potassium as those from fertilizer-only plots.
- Intervention effect Carrot plants from FYM plots contained about 30% more phosphorus than those from fertilizer-only plots.