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Field Notes

The research side of permaculture.studio.

Verification record

Every claim in this article was checked against the abstracts of the papers it cites, by a separate pass that was given those abstracts and nothing else. A claim marked supported carries the sentence that supports it, quoted verbatim below.

References
14
Claims checked
6
Fully supported
4
Checked on
Sep 27, 2026

Claim by claim

  1. In a single-season field trial at Kishoreganj, Bangladesh, jute variety BJRI Tossa Pat-8 given 140 percent of the recommended nitrogen dose (112 kg per hectare) produced the highest fibre yield (3.21 t per hectare) and stick yield (6.71 t per hectare).

    SupportedField trialField trial

    “The maximum fibre yield (3.21 t ha-1) and stick yield (6.71 t ha-1) were achieved with T₄”

    The abstract fully supports the claim, documenting that treatment T4 (140% RDN, 112 kg/ha) resulted in the highest fibre (3.21 t/ha) and stick (6.71 t/ha) yields for BJRI Tossa Pat-8 in the Kishoreganj trial.

    Checked by google/gemini-3.8-flash on Sep 27, 2026

  2. Fibre yield increased with nitrogen application up to 140 percent of the recommended dose and then declined at 160 and 180 percent.

    Partially supportedField trialField trial

    “Fibre yield increased with N application up to T₄ and then declined at higher application rates.”

    The claim accurately reflects the study's treatment results (where T₄ was 140% RDN and higher rates were 160% and 180%), but generalises the finding by omitting that it was observed specifically in jute (Corchorus olitorius L.) under field conditions in Bangladesh.

    Checked by google/gemini-3.8-flash on Sep 27, 2026

  3. The tallest plants (291 cm) and the highest leaf number (113.34 per plant) occurred at the highest dose tested, 180 percent of the recommended dose, while the greatest basal stem diameter (19.46 mm) and fresh weight (3.53 kg per plant) occurred at 140 percent.

    SupportedField trialField trial

    “The tallest plants (291 cm) and highest number of leaves (113.34 plant-1) were recorded under T₆, whereas the greatest basal stem diameter (19.46 mm), fresh weight (3.53 kg plant-1) and stem weight without leaves were obtained under T₄.”

    The text explicitly confirms these values under treatments T₆ (180% RDN) and T₄ (140% RDN).

    Checked by google/gemini-3.8-flash on Sep 27, 2026

  4. Harvest index was highest at the recommended dose of 80 kg per hectare (33.43 percent) and lowest at 180 percent of the recommended dose (24.83 percent).

    SupportedField trialField trial

    “Harvest index was highest in T₂ (33.43 %) and lowest in T₆ (24.83 %)”

    The abstract defines T₂ as the recommended nitrogen dose of 80 kg ha-1 and T₆ as 180% RDN, and confirms harvest index was highest in T₂ (33.43%) and lowest in T₆ (24.83%).

    Checked by google/gemini-3.8-flash on Sep 27, 2026

  5. Correlation and principal component analyses indicated strong positive associations between plant height, stem diameter and fibre yield.

    SupportedField trialField trial

    “Correlation and principal component analyses (PCA) revealed strong positive associations between plant height, stem diameter and fibre yield.”

    The abstract directly confirms that correlation and principal component analyses showed strong positive associations between plant height, stem diameter, and fibre yield.

    Checked by google/gemini-3.8-flash on Sep 27, 2026

  6. Nitrogen application significantly affected all measured growth and yield parameters, with the lowest values recorded in the no-nitrogen control.

    Partially supportedField trialField trial

    “Nitrogen application significantly affected all measured growth and yield parameters.”

    While nitrogen application affected all parameters, the lowest values in the control treatment specifically referred to fibre and stick yields, whereas the lowest harvest index occurred under T₆.

    Checked by google/gemini-3.8-flash on Sep 27, 2026

What this does and does not prove

It proves that every DOI cited resolves to a real registered work whose returned DOI matches the one requested, that none of them is retracted, and that each claim has a named sentence in a cited abstract behind it.

It does not prove that the paper as a whole supports the claim. An abstract can overstate its own findings, and a sentence can be read out of context. That is why the quote is printed here rather than summarised: if the check is wrong, you can see that it is wrong.

Evidence grading is automatic and conservative. Anything it cannot classify is marked unclassified rather than flattered upward.