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Agronomy
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Coupled with Optimal Resource Allocation and Efficient Cropping Patterns for...
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Coupled with Optimal Resource Allocation and Efficient Cropping Patterns for Sustainable Agriculture

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

Deadline for manuscript submissions: closed (30 May 2023) | Viewed by 6777

Special Issue Editor

Dr. Baizhao Ren

E-Mail Website
Guest Editor
College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
Interests: maize; cultivation physiology; stress physiology; yield formation; growth and development
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The increasing population poses huge threats to all spheres of life, including agriculture. It is anticipated that there is need for a 50% increase in crop production by the mid-21st century in order to achieve the major purpose of “feeding the world”. As climate change progresses, various biotic and abiotic challenges that interefere with the growth and development of crops and that limit the increase in crop productivity have developed in recent years. Future field agronomic management practices should use efficient cropping patterns so that the allocation of optimal resources is possible in most of the areas of crop production. Thus, in this Special Issue, we encourage any advancements in crop cultivation physiology, ecology, yield formation, resource use efficiency, management practices, growth, and development leading to enhanced sustainability for cultivated field crop production. This Special Issue will cover a wide variety of areas, aiming to contribute to the overall knowledge of efficient cultivation management methods and regulation from several aspects and also aims to provide a theorhetical basis for measures to cultivate field crops in a sustainable way.

Dr. Baizhao Ren
Guest Editor

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

  • crop management
  • cultivation ecophysiology
  • yield formation
  • growth and development
  • sustainable cropping systems
  • optimal resource allocation

Published Papers (2 papers)

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Research

24 pages, 4118 KiB  
Article
Effects of Carbon-Based Fertilizer on Soil Physical and Chemical Properties, Soil Enzyme Activity and Soil Microorganism of Maize in Northeast China
by Xuerui Wang, Bin Wang, Wanrong Gu and Jian Li
Agronomy 2023, 13(3), 877; https://doi.org/10.3390/agronomy13030877 - 16 Mar 2023
Cited by 3 | Viewed by 4313
Abstract
The soil environment is an important factor that affects the growth of maize. Our study discusses the effect of carbon-based fertilizer on the rhizosphere soil microenvironment. Xianyu 335 and Jingke 968 maize varieties were selected, and six treatments were set up as follows: [...] Read more.
The soil environment is an important factor that affects the growth of maize. Our study discusses the effect of carbon-based fertilizer on the rhizosphere soil microenvironment. Xianyu 335 and Jingke 968 maize varieties were selected, and six treatments were set up as follows: no fertilizer, chemical fertilizer, or carbon-based fertilizer (3 t/hm2, 3.75 t/hm2, 4.5 t/hm2, and 5.25 t/hm2). The results showed that the carbon-based fertilizer significantly reduced the soil pH value in the late growth stage. Carbon-based fertilizer can significantly improve the conductivity of soil solution. On 8 July (jointing stage), the conductivity of the two varieties of soil was the highest at 3.75 t treatment, 259.38% and 169.26% higher than that of chemical fertilizer, respectively. Carbon-based fertilizer significantly increased the soil carbon flux. The soil carbon flux of Jingke 968 showed a trend of first rising and then falling with the increase in the application amount of carbon-based fertilizer. On 8 July (jointing stage) and 28 July (tasseling stage), the 4.5 t treatment reached the maximum value, and on 16 August (early filling stage) and 4 September (waxy stage), the 3.75 t treatment reached the maximum value. Carbon-based fertilizer significantly increased the content of nitrate nitrogen, ammonium nitrogen, available phosphorus, and available potassium in the topsoil. Carbon-based fertilizer had a significant effect on soil enzyme activity and significantly increased soil neutral phosphatase activity in the late growth stage. On 16 August (early stage of grouting), β-Glucosidase activity was significantly higher in 3 t and 3.75 t treatments than other treatments in Xianyu 335 and Jingke 968. The activity of α-Xylosidase reached the highest at 3.75 t. The activities of polyphenol oxidase and catalase reached their maximum at 5.25 t treatment on 4 September (waxy ripening) and 26 September (full ripening). Carbon-based fertilizer significantly increased the soil bacterial diversity index (Shannon index, ACE index and Chao1 index), but had no significant impact on the fungal diversity index, and significantly increased the abundance of soil bacterial and fungal populations. Full article
(This article belongs to the Special Issue Coupled with Optimal Resource Allocation and Efficient Cropping Patterns for Sustainable Agriculture)
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13 pages, 3411 KiB  
Article
Improving Soil Fertility and Wheat Yield by Tillage and Nitrogen Management in Winter Wheat–Summer Maize Cropping System
by Haixing Cui, Yongli Luo, Chunhui Li, Yonglan Chang, Min Jin, Yong Li and Zhenlin Wang
Agronomy 2023, 13(3), 740; https://doi.org/10.3390/agronomy13030740 - 1 Mar 2023
Cited by 5 | Viewed by 2118
Abstract
Soil degradation and high environmental costs impede agricultural production in North China. A 6-year field experiment was conducted to determine the effects of tillage practice and nitrogen application rate on changes in soil fertility and wheat yield. Four tillage systems (rotary tillage without [...] Read more.
Soil degradation and high environmental costs impede agricultural production in North China. A 6-year field experiment was conducted to determine the effects of tillage practice and nitrogen application rate on changes in soil fertility and wheat yield. Four tillage systems (rotary tillage without maize straw return through 6 years, RT; rotary tillage with maize straw return through 6 years, RS; deep tillage with maize straw return through 6 years, DS; and rotary tillage through 2 years followed by deep tillage next year with maize straw applied for two cycles, RS/DS) and three N levels (HN, 300 kg N ha−1, refers to traditional farming practice; MN, 0.75 × HN, 225 kg N ha−1, to recommended N rate; and LN, 0.5 × HN, 150 kg N ha−1, to reduced N rate) were tested. The soil organic carbon, labile organic carbon, inorganic N, available phosphorus, and available potassium under straw return treatments were significantly higher than RT in the 0–30 cm soil layer (p < 0.05). The microbial diversity, invertase, urease, and alkaline phosphatase activities also increased when maize straw was returned. Tillage practices could distribute maize straw in different depths of the soil and then affect soil nutrients, enzyme activity, and microbial diversity. The RS treatment presented the greatest effects in the 0–10 cm layer, while more significant impacts were observed in DS and RS/DS treatments at the 10–30 cm depths. The levels of soil nutrients and enzyme activity increased with an increased N rate. Compared to that under LN, wheat yields increased under HN and MN treatments, whereas there were no significant differences between HN and MN (p > 0.05). An increasing tendency of grain yield was observed in DS and RS/DS, while conversely so in RS. RS/DS had lower farm costs than DS during the study duration. Thus, RS/DS at 225 kg N ha−1 is the best method for improving soil fertility and wheat yield. Full article
(This article belongs to the Special Issue Coupled with Optimal Resource Allocation and Efficient Cropping Patterns for Sustainable Agriculture)
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