Claim · model-written summary
Other fertilizer treatments showed no significant change in response.
- Taxon
- sweet potatoes
_Flower.jpg?width=60)
Ipomoea batatase1 - Outcome
- other treatmentse0
- Direction
- no significant changese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“other treatments showed no significant changes”
e1“especially of sweet potatoes”
Title
Changes in Yields and Fertilizer Responses with Continuous Cropping in Uganda
D. Stephens Experimental Agriculture 1969. doi:10.1017/s0014479700004579
Other claims from this paper (5)
- Observation Crop yields declined during the first four years following a grass resting period.
- Observation Responses to K increased during the trials.
- Observation Responses to farmyard manure increased during the trials.
- Mechanism Potassium deficiency may seriously limit crop yields after several years of continuous cropping, especially sweet potatoes.
- Intervention effect N, P, and K fertilizers maintained yields as well as farmyard manure.