Claim · model-written summary
Combined organic manure and inorganic fertilizer gave higher flag-leaf photosynthetic rate, photosystem 2 activity, chlorophyll content, and leaf area index at mid grain filling than inorganic fertilizers alone.
- Taxon
- Winter Wheat
Triticum aestivumt0 - Organ / stage
- flag leavese0
- Treatment
- combined organic manure and inorganic fertilizerse0
- Outcome
- net photosynthetic rate (PN), maximal activity of photosystem 2, PS2 (Fv/Fm), and chlorophyll content (SPAD value) of flag leaves and leaf area index (LAI)e0
- Direction
- much highere0
- Qualifier
- mid grain filling stage (20 or 23 d post anthesis, DPA)e0
- Comparator
- only inorganic fertilizerse0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the treatments of combined organic manure and inorganic fertilizers (TMI), net photosynthetic rate (PN), maximal activity of photosystem 2, PS2 (Fv/Fm), and chlorophyll content (SPAD value) of flag leaves and leaf area index (LAI) were much higher at the mid grain filling stage (20 or 23 d post anthesis, DPA), and exhibited slower declines at the late grain filling stage (30 DPA), compared with the treatments of only inorganic fertilizers (TI)”
t0“Winter Wheat”
Title
D. Jiang; T. Dai; Q. Jing; et al. Photosynthetica 2004. doi:10.1023/b:phot.0000046164.77410.ef
Other claims from this paper (9)
- Intervention effect Combined organic and inorganic fertilizer slowed the late grain-filling decline in flag-leaf photosynthetic traits relative to inorganic fertilizers alone.
- Intervention effect Combined organic and inorganic fertilizer produced higher canopy photosynthetic traits at mid grain filling than inorganic fertilizers alone.
- Observation The organic-plus-inorganic and inorganic-only treatments produced different grain yields.
- Intervention effect Within both fertilizer treatment classes, added N, P, and K raised flag-leaf and canopy photosynthetic abilities, except under NK.
- Intervention effect Within both fertilizer treatment classes, added N, P, and K raised yield levels except under NK.
- Observation NK increased soil N and K but decreased soil P.
- Mechanism The authors attributed reduced photosynthetic characteristics and leaf area index under NK to nutrient imbalance in soil.
- Mechanism The authors attributed the rapid decline in flag-leaf photosynthetic traits under NK to nutrient imbalance.
- Intervention effect NK reduced yield to near the unfertilized control level.