Claim · model-written summary
Fertilizers gave 1.5–2.5 times higher grain yield than no fertilizer.
- Taxon
- rice–wheat
Oryza sativa
Triticum aestivumt0 - Treatment
- Fertilizerse0
- Outcome
- grain yieldse0
- Direction
- highere0
- Value
- 1.5–2.5 timese0
- Comparator
- no‐fertilizere0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizers resulted in 1.5–2.5 times higher grain yields than no‐fertilizer”
t0“rice–wheat”
Title
Y. Duan; M. Xu; X. He; et al. Soil Use and Management 2011. doi:10.1111/j.1475-2743.2011.00364.x
Other claims from this paper (12)
- Observation Fertilizer treatments had nitrogen recovery efficiency of 21.0 to 58.3%.
- Intervention effect At Suining, NPM and NPKM increased rice yields by 22.6–25.9% versus NM.
- Intervention effect At Suining, NPM and NPKM increased wheat yields by 34.4–37.5% versus NM.
- Observation Yields were similar among the named fertilizer treatments at Wuchang.
- Observation At Suining, N accumulation ranked NM below NPM and NPKM, which were equal.
- Observation At Suining, nitrogen recovery efficiency ranked NM below equal NPM and NPKM.
- Observation At Wuchang, nitrogen accumulation was equal among NM, NPM, and NPKM.
- Observation At Wuchang, nitrogen recovery efficiency was equal among NM, NPM, and NPKM.
- Observation Nitrogen losses represented 21.4–49.1% of total nitrogen input.
- Observation With fertilizer, soil total nitrogen accumulated at 0.01–0.04 g/kg/yr from 1982 to 2005.
- Observation Without fertilizer, soil total nitrogen decreased or remained constant.
- Recommendation Authors concluded chemical phosphorus and potassium could be reduced or eliminated after long-term manure application while preserving yield and increasing soil nitrogen.