This preprint is under consideration at Journal of Cotton Research. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
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Photosynthetic Characteristics of Cotton Are Enhanced by Altering the Timing of Mulch Film Removal
Xiang kun Yang
Xinjiang Academy of Agricultural and Reclamation Science
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9533-1122
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: The photosynthetic parameters of cotton plants may be modified by the timing of film-removal during their growing period. This study was undertaken during 2015–2017 in Xinjiang, China, to determine to what extent the film mulching removal time—1 and 10 days before the first irrigation and 1 day before the second irrigation after seedling emergence—influenced cotton’s photosynthetic characteristics. The control group consisted of film mulching present throughout the growing period.
Results: The results suggested the following: (1) Removing mulching-film within 50 days of seedling emergence had adverse effects on soil temperature and moisture. (2) Film-removal before the first or second irrigation after emergence improved the net photosynthetic rate in cotton’s later flowering stage and its transpiration rate in mid and later flowering stages, while enhancing the actual electron transport rate (ETR) and maximum electron transfer rate (ETRmax) between cotton photosystems I and II. (3) Film-removal treatment post-emergence also increased cotton plants’ tolerance to high irradiation, a trend more pronounced in the early flowering stage in wetter years. (4) Leaf area index (LAI) of cotton was reduced in the film-removal treatment, for which the greatest maximum accumulation of dry matter occurred in a drought year (i.e., 2015). (5) Film-removal increased lint cotton yield, except in dry year (2015).
Conclusions: Film-removal can improve cotton’s fiber quality to a certain extent. Collectively, our study’s experimental results indicate that applying mulch film removal at an appropriate, targeted time can improve photosynthesis and yield of cotton crops.
Keywords
chlorophyll fluorescence, gas exchange parameters, lint yield, removing mulch film, soil temperature and moisture content
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CURRENT STATUS: Under Review
Version 1
Posted 11 Dec, 2020
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Review #2 received
Received 18 Feb, 2021
Reviewer #2 agreed
On 04 Feb, 2021
Review #1 received
Received 13 Jan, 2021
Reviewer #1 agreed
On 01 Jan, 2021
Reviewers invited
Invitations sent on 29 Dec, 2020
Editor assigned
On 05 Dec, 2020
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On 05 Dec, 2020
Editor invited
On 05 Dec, 2020
First submitted
On 02 Dec, 2020
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Subject Areas
Agricultural Engineering
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This preprint is under consideration at Journal of Cotton Research. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research
Photosynthetic Characteristics of Cotton Are Enhanced by Altering the Timing of Mulch Film Removal
Xiang kun Yang
Xinjiang Academy of Agricultural and Reclamation Science
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9533-1122
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 11 Dec, 2020
No community comments so far
Review #2 received
Received 18 Feb, 2021
Reviewer #2 agreed
On 04 Feb, 2021
Review #1 received
Received 13 Jan, 2021
Reviewer #1 agreed
On 01 Jan, 2021
Reviewers invited
Invitations sent on 29 Dec, 2020
Editor assigned
On 05 Dec, 2020
Submission checks complete
On 05 Dec, 2020
Editor invited
On 05 Dec, 2020
First submitted
On 02 Dec, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Agricultural Engineering
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: The photosynthetic parameters of cotton plants may be modified by the timing of film-removal during their growing period. This study was undertaken during 2015–2017 in Xinjiang, China, to determine to what extent the film mulching removal time—1 and 10 days before the first irrigation and 1 day before the second irrigation after seedling emergence—influenced cotton’s photosynthetic characteristics. The control group consisted of film mulching present throughout the growing period.
Results: The results suggested the following: (1) Removing mulching-film within 50 days of seedling emergence had adverse effects on soil temperature and moisture. (2) Film-removal before the first or second irrigation after emergence improved the net photosynthetic rate in cotton’s later flowering stage and its transpiration rate in mid and later flowering stages, while enhancing the actual electron transport rate (ETR) and maximum electron transfer rate (ETRmax) between cotton photosystems I and II. (3) Film-removal treatment post-emergence also increased cotton plants’ tolerance to high irradiation, a trend more pronounced in the early flowering stage in wetter years. (4) Leaf area index (LAI) of cotton was reduced in the film-removal treatment, for which the greatest maximum accumulation of dry matter occurred in a drought year (i.e., 2015). (5) Film-removal increased lint cotton yield, except in dry year (2015).
Conclusions: Film-removal can improve cotton’s fiber quality to a certain extent. Collectively, our study’s experimental results indicate that applying mulch film removal at an appropriate, targeted time can improve photosynthesis and yield of cotton crops.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF.