Intervention effectmodel-written summary

Marketable bulb yield of NPK once was 66.12 Mg ha -1, not significantly greater than CRF 50%, CRF 100% and NPK 3-split.

A claim from Evaluation of Controlled Release Fertilizer on Bulb Yield, Nutrient Content, and Storage Quality of Overwintering Intermediate-Day Onions · 2022

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Taxon: OnionsAllium cepat0
Treatment: NPK oncee2
Outcome: Marketable bulb yieldse2
Direction: not significantly greatere2
Value: 66.12 Mg ha -1e2
Comparator: CRF 50%, CRF 100%, and NPK 3-splite2
Setting: onion growers' fieldse1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

*Allium cepa* · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0
“Overwintering Intermediate-Day Onions”
✓ located verbatim in the source · title, characters 100–137

e1
“in onion growers' fields during the 2013/2014 and 2014/2015 growing seasons”
✓ located verbatim in the source · abstract, characters 362–437

e2
“Marketable bulb yields for NPK once and CRF 150% was 66.12 Mg ha -1 and 65.67 Mg ha -1 , respectively, on a 2-year average, which were not significantly greater than CRF 50%, CRF 100%, and NPK 3-split”
✓ located verbatim in the source · abstract, characters 923–1123

Title

Evaluation of Controlled Release Fertilizer on Bulb Yield, Nutrient Content, and Storage Quality of Overwintering Intermediate-Day Onions

Jongtae Lee; Byeonggyu Min Korean Journal of Soil Science and Fertilizer 2022. doi:10.7745/kjssf.2022.55.4.324

Other claims from this paper (9)

Intervention effect Marketable bulb yield of CRF 150% was 65.67 Mg ha -1, not significantly greater than CRF 50%, CRF 100% and NPK 3-split.
Intervention effect Bulb nutrient uptake did not differ among the fertilized treatments; only the non-fertilized control differed.
Observation Apparent N recovery of CRF 25% was 32.5%.
Observation Apparent P recovery of CRF 25% was 20.9%.
Observation Apparent K recovery of CRF 25% was 76.1%.
Intervention effect Apparent nutrient recovery of CRF 25% was approximately twice that of CRF 100%.
Intervention effect Total flavonoids content was higher in CRF 25% than in other treatments.
Recommendation A 50% reduced CRF rate based on the soil test recommended N rate should satisfy crop demand of available nutrients when soil electric conductivity exceeds 1.5 dS m -1 and organic matter is 35 g kg -1.
Observation Soil nitrate-N content in all CRF treatments and NPK once peaked at 133 days after transplanting.

Record rev-2284fc51132bc6e3f84b69ca9e533f21b8819c7f299d3a6c7163c1568930acc3 · schema claims-v0.9 · position 1 in the model’s answer

fertilization · quality: postharvest · Allium cepa (onion)Positive and negative results

69 papers: 53 positive, 16 negative or no effect

15 papers in the same direction as this claim · 53 reporting no difference from an alternative

positive
Maximum marketable yield was 62.7 Mg·ha−1 at 40 Mg·ha−1 CMC.
Evaluation of Composted Cattle Manure Rate on Bulb Onion Grown with Reduced Rates of Chemical Fertilizer · 2012
No difference from an alternativeCited by this paper
positive
Compost tea sprays increased marketable onion yield.
SUPPRESSION OF EARLY BLIGHT ON TOMATO AND PURPLE BLIGHT ON ONION BY FOLIAR SPRAYS OF AERATED AND NON-AERATED COMPOST TEAS · 2007
No difference from an alternative
positive
Riviera F1 marketable yield increased 27% with 50 kg·ha−1 N fertigation.
Effect of Drip Irrigation and Fertilization Timing and Rate on Yield of Onion · 2003
No difference from an alternative
positive
The highest total bulb yield was 47.69 t ha-1 with 92 kg ha-1 N and 242 kg ha-1 NPS.
Improving onion productivity through optimum and economical use of soil macronutrients in Central Rift Valley of Ethiopia · 2022
No difference from an alternative
positive
Increasing nitrogen to 214.2 kg N/ha significantly increased growth, yield, culls, bulb weight and storage weight loss.
ONION YIELD AS AFFECTED BY FOLIAR APPLICATION WITH AMINO AND HUMIC ACIDS UNDER NITROGEN FERTILIZER LEVELS · 2013
No difference from an alternative
positive
Total and marketable yields and individual bulb weight increased quadratically with organic fertilization rate in sweet onion.
Sweet Onion (Allium cepa L.) as Influenced by Organic Fertilization Rate: 2. Bulb Yield and Quality before and after Storage · 2018
No difference from an alternative
positive
At 120% ETc irrigation with 105 kg N ha-1, marketable bulb yield was 11.64 t ha-1, among the maximum yields.
Effects of irrigation and nitrogen levels on bulb yield, nitrogen uptake and water use efficiency of shallot (Allium cepa var. ascalonicum Baker) · 2013
No difference from an alternative
positive
Marketable yield of onion was highest (20.8 ha-1) at 105:119.6:22 kg ha-1 N:P2O5:S in the Adama Red variety.
Optimum rate of NPS fertilizer for economical production of irrigated onion (Allium cepa L) in Dembyia District of Amhara Region, Ethiopia · 2019
No difference from an alternative

60 papers more in this group

See all 69 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.

Other papers on the same question

fertilization · quality: postharvest · Allium cepa (onion)Positive and negative results