Claim · model-written summary
SCU 21.5 gave yields comparable to one ammonium nitrate application.
- Taxon
- Tomatoes
Solanum lycopersicumt0 - Treatment
- SCU 21.5e0
- Outcome
- yieldse0
- Direction
- comparablee0
- Comparator
- single application of NH 4 NO 3e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“When SCU 21.5 or SCU 29.3 was used, the yields were comparable to a single application of NH 4 NO 3”
t0“Tomatoes”
Title
J. E. Shelton Soil Science Society of America Journal 1976. doi:10.2136/sssaj1976.03615995004000010034x
Other claims from this paper (10)
- Intervention effect SCU 11.4 at 392 or 560 kg N/ha produced greater marketable yields than ammonium nitrate at the same rate.
- Intervention effect SCU 29.3 gave yields comparable to one ammonium nitrate application.
- Intervention effect Fruit number per plot was not significantly related to treatments.
- Intervention effect Average fruit weight differed significantly among treatments.
- Association Average fruit weight correlated with total yield.
- Intervention effect At first sampling, tissue nitrogen was highest after a single ammonium nitrate application.
- Intervention effect At first sampling, tissue nitrogen was lowest with SCU 11.4.
- Intervention effect At later samplings SCU 11.4 maintained higher tissue nitrogen.
- Intervention effect A single 729 kg N/ha ammonium nitrate application harmed tomato growth and production.
- Intervention effect The growth and production harm seen with 729 kg N/ha ammonium nitrate was not observed with sulfur-coated urea.