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Agronomy
Special Issues
Fertilization and Water Use in Long-Term Dryland Cotton Crop Systems
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Fertilization and Water Use in Long-Term Dryland Cotton Crop Systems

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Innovative Cropping Systems".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 2310

Special Issue Editors

Prof. Dr. Daniel Tan

E-Mail Website
Guest Editor
Sydney Institute of Agriculture, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia
Interests: crop agronomy; abiotic stress; farming systems; plant nutrition
Prof. Dr. Honghai Luo

E-Mail Website
Guest Editor
Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, China
Interests: cotton; abiotic stresses; photosynthesis; root physiology; yield formation
Special Issues, Collections and Topics in MDPI journals
Dr. Aziz Khan

E-Mail Website
Guest Editor
Key Laboratory of Plant Breeding and Genetics, College of Agriculture, Guangxi University, Nanning 530005, China
Interests: cotton physiology; cotton biotic and abiotic stresses; cotton breeding; cotton production; Irrigation

Special Issue Information

Dear Colleagues,

Cotton is the most important fiber and oil crop species in the world. Water and fertilizer applications are approaches used to improve the yield in cotton production, especially in arid regions. Modeling studies have projected that the optimal water–nutrient application modes exploit cotton compensation and self-regulation capacities, which are beneficial for decreasing inputs, but are not conducive to obtaining the highest yields. In the future, higher energy costs and scarce nutrient resources are likely to result in rising fertilizer prices and environmental pollution. To counteract these issues, efficient water, and nutrient management strategies are needed to achieve an optimal cotton yield under arid conditions.

In this Special Issue, we aim to focus on the impacts of irrigation and fertilization in terms of changes in soil water levels and nutrient content on cotton production and quality. Ingenious, improved management strategies capable of increasing productivity and improving the quality and resilience of cotton are planned to be documented.

Prof. Dr. Daniel Tan
Prof. Dr. Honghai Luo
Dr. Aziz Khan
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fertigation
  • yield formation
  • root growth
  • photosynthesis
  • water production
  • agronomy
  • quality

Published Papers (1 paper)

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Research

15 pages, 2233 KiB  
Article
Fertilizer Reduction Combined with Organic Liquid Fertilizer Improved Canopy Structure and Function and Increased Cotton Yield
by Qi Liang, Xiaojuan Shi, Nannan Li, Feng Shi, Yu Tian, Hongxia Zhang, Xianzhe Hao and Honghai Luo
Agronomy 2022, 12(8), 1759; https://doi.org/10.3390/agronomy12081759 - 27 Jul 2022
Cited by 4 | Viewed by 1908
Abstract
The application of organic liquid fertilizer combined with chemical fertilizer is one of the key technologies used to simultaneously improve cotton yield and efficiently utilize resources. However, organic fertilizer is usually applied once as a base fertilizer during production, and few studies have [...] Read more.
The application of organic liquid fertilizer combined with chemical fertilizer is one of the key technologies used to simultaneously improve cotton yield and efficiently utilize resources. However, organic fertilizer is usually applied once as a base fertilizer during production, and few studies have been conducted on topdressing with water during the growth period. Therefore, in this study, Xinluzao 74 was used as the experimental material, and a single fertilizer application (CF) was used as a control in 2019–2020 under the conditions of integrated control of water and fertilizer with mulch drip irrigation. Five combinations of reduction in chemical fertilizer combined with organic fertilizer (OF1, OF2, OF3, OF4, and OF5) were used to investigate the influences of chemical fertilizer combined with organic liquid fertilizer on the leaf area index (LAI), canopy openness (DIFN), mean foliage tilt angle (MTA), photosynthetically active radiation (PAR), canopy apparent photosynthesis (CAP), and yield and quality of cotton. The results show that among the different fertilization treatments, the OF2 treatment had the best results, not only ensuring a suitable LAI (4.8) and maintaining a large DIFN (0.1) but also increasing the light transmittance of the middle and lower canopies (0.02–0.03). At the same time, CAP increased significantly compared with that in the CF treatment, with an average increase of 12.8%. The high value lasted for a long time, and the late decay stage remained at 8.9 μmol m−2 s−1. The ratio of the population respiration rate to total photosynthesis (CR/TCAP) decreased significantly, with an average decrease of 13.5%. Compared with that in CF, the lint yield increased by 27.0% in the other treatments. The correlation analysis showed that lint yield was positively correlated with the relative chlorophyll content (SPAD value), PAR transmittance (PARU) and CAP in the upper canopy (p < 0.05) and significantly negatively correlated with PAR transmittance (PARM) in the middle canopy and PAR transmittance (PARD) and CR/TCAP in the lower canopy (p < 0.05). Therefore, under mulch drip irrigation, the OF2 treatment (OF + 80% CF) improved the canopy structure of cotton at the late growth stage, increased the population photosynthetic rate, and increased lint yield significantly; thus, this approach can be used as an effective fertilization method to achieve the goal of decreasing costs and increasing efficiency in cotton production. Full article
(This article belongs to the Special Issue Fertilization and Water Use in Long-Term Dryland Cotton Crop Systems)
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