Nutrient and Water Management in Dryland Crops

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Nutrition".

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 1744

Special Issue Editor


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Guest Editor
College of Agronomy, Northwest A & F University, Yangling, Xianyang 712100, China
Interests: dry farming; nutrient and water management; plant physiological ecology; cropping systems; crop cultivation

Special Issue Information

Dear Colleagues,

Water scarcity has become an important factor limiting the development of agriculture and threatening human food security worldwide. Despite its vast territory, the variety of soil types and the abundance of light resources, the potential for agricultural production in dry farming areas is severely limited by the lack of water and its uneven spatial and temporal distribution, the lack of vegetation, the seriousness of soil erosion and the fragility of the ecological environment. Irrational cropping systems and farming techniques in some areas have further exacerbated the environmental pressures in dry farming areas, leading to serious problems such as soil erosion and deterioration in the quality of cultivated land. To rationalize the use of limited rainfall resources and improve crop water utilization, it is necessary to restructure cropping and establish a stable cropping system that can adapt to various arid climate types and take advantage of regional resources. This Special Issue of Plants will highlight the nutrient and water management, resource efficiency, yield, and economic benefits of different cropping systems in dry farming areas, and their role in the interactions of plants with their environment.

Prof. Dr. Xiaolong Ren
Guest Editor

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Keywords

  • nutrient and water management
  • dry farming
  • cropping systems
  • agricultural ecosystem
  • economic and environmental benefits

Published Papers (1 paper)

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Research

12 pages, 1465 KiB  
Article
Effect of Urea Coated with Polyaspartic Acid on the Yield and Nitrogen Use Efficiency of Sorghum (Sorghum bicolor, (L.) Moench.)
by Peng Yan, Mengying Fang, Lin Lu, Liang Ren, Xuerui Dong and Zhiqiang Dong
Plants 2022, 11(13), 1724; https://doi.org/10.3390/plants11131724 - 29 Jun 2022
Cited by 4 | Viewed by 1459
Abstract
Innovative approaches to enhance N fertilization to improve season-long N availability are essential to optimal sorghum (Sorghum bicolor, (L.) Moench.) productivity and N use efficiency. A two-year field experiment was conducted in the 2020 and 2021 summer seasons on the North [...] Read more.
Innovative approaches to enhance N fertilization to improve season-long N availability are essential to optimal sorghum (Sorghum bicolor, (L.) Moench.) productivity and N use efficiency. A two-year field experiment was conducted in the 2020 and 2021 summer seasons on the North China Plain to determine the effects of a novel urea coated with polyaspartic acid (PAA) (PN) and a control treatment (CN) on grain sorghum yield and N utilization characteristics at four N application rates (0, 60, 120, and 240 kg ha−1). The results showed that sorghum yield, agronomic traits (including leaf area duration (LAD), crop growth rate (CGR), and dry matter accumulation (DMA)), the accumulation of nitrate N and ammonium N in the 0–60 cm soil layer, stover and grain N content, and total N uptake (NUT) in 2020 and 2021 significantly increased as N application rates increased from 0 to 240 kg ha−1, whereas nitrogen agronomic efficiency (NAE), N uptake efficiency (NUpE), and N utilization efficiency (NUtE) varied inversely with increasing N application rates. Compared to CN, PN demonstrated a significant enhancement in grain sorghum yield, LAD, and CGR, from 3.3% to 7.1%, from 4.8% to 6.1%, and from 5.8% to 6.8%, respectively, at 60 and 120 kg N ha−1. PN improved the N availability (mainly nitrate-N) in the sorghum soft dough and the stover and grain N content at harvest and NUT, NUpE, and NAE accordingly compared with CN at the 60 and 120 kg ha−1 N application rates. In short, our two-year field trials demonstrated that PN with 120 kg N ha−1 is recommended in grain sorghum to optimize sorghum productivity and nitrogen use efficiency at the current yield level in the North China Plain. Full article
(This article belongs to the Special Issue Nutrient and Water Management in Dryland Crops)
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