Evidence map›Paper›PMID 35009146›Full record

ArticlePlants (Basel, Switzerland)2022

Impact of Harvest Time and Pruning Technique on Total CBD Concentration and Yield of Medicinal Cannabis.

Danilo Crispim Massuela, Jens Hartung, Sebastian Munz, Federico Erpenbach, Simone Graeff-Hönninger

Open access · goldAbstract read
In one paragraph

Article in Plants (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
7.8field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
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  8. Determination of Optimal Harvest Time inPlants (Basel, Switzerland) · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Danilo Crispim MassuelaCropping Systems and Modelling, Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany.ORCID 0000-0001-7597-4748
Jens HartungBiostatistics, Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany.
Sebastian MunzCropping Systems and Modelling, Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany.ORCID 0000-0001-6713-1863
Federico ErpenbachCropping Systems and Modelling, Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany.
Simone Graeff-HönningerCropping Systems and Modelling, Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany.ORCID 0000-0002-2384-3233
University of Hohenheim · DE

Funding

German Federal Ministry for Economic Affairs and Energy 16KN089622
6 · The paper itself

Abstract

The definition of optimum harvest and pruning interventions are important factors varying inflorescence yield and cannabinoid composition. This study investigated the impact of (i) harvest time (HT) and (ii) pruning techniques (PT) on plant biomass accumulation, CBD and CBDA-concentrations and total CBD yield of a chemotype III medical cannabis genotype under indoor cultivation. The experiment consisted of four HTs between 5 and 11 weeks of flowering and three PTs-apical cut (T); removal of side shoots (L) and control (C), not pruned plants. Results showed that inflorescence dry weight increased continuously, while the total CBD concentration did not differ significantly over time. For the studied genotype, optimum harvest time defined by highest total CBD yield was found at 9 weeks of flowering. Total CBD-concentration of inflorescences in different fractions of the plant's height was significantly higher in the top (9.9%) in comparison with mid (8.2%) and low (7.7%) fractions. The T plants produced significantly higher dry weight of inflorescences and leaves than L and C. Total CBD yield of inflorescences for PTs were significantly different among pruned groups, but do not differ from the control group. However, a trend for higher yields was observed (T > C > L).

Indexed as

cannabidiolCannabis sativaCBD yieldharvest timepruningtopping

Identifiers

PMID35009146
PMCPMC8747189
OpenAlexW4205989289

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.