Special Issue "Optimizing Grain Yield and Water Use Efficiency in Maize Production"

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Crop Production".

Deadline for manuscript submissions: 10 December 2021.

Special Issue Editor

Prof. Dr. Shaokun Li
E-Mail Website
Guest Editor
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture, Beijing 100081, China
Interests: maize cultivation; high yield and high efficiency; physiology and ecology

Special Issue Information

Dear Colleagues,

Maize is a widely cultivated food crop in the word, which is of great significance for ensuring food security and social stability. Water shortage is a main factor limiting maize growth and grain yield in arid and semi-arid agricultural areas. Therefore, improving maize yield and water use efficiency has become a difficult and hot issue in current research.

Maize grain yield and water use efficiency have been affected by the interaction of genotype, environment, and cultivation measures. Exploiting the drought-tolerant gene to breed new varieties, increasing plant density to improve high grain yield, covering the ground to reduce soil moisture evaporation, and optimizing the irrigation schedule and irrigation method are effective ways to obtain high grain yield and water use efficiency. Revealing the water requirement of maize through molecular, physiological, and phenotypic aspects, and further adopting agronomic and engineering water-saving methods to optimize yield and water use efficiency is the development direction of maize production in arid and semi-arid agricultural areas in the future.

This Special Issue will publish recent research that describes the state of the art in research and development on solutions in maize production systems in arid and semi-arid agricultural areas.

Prof. Dr. Shaokun Li
Guest Editor

Manuscript Submission Information

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Keywords

  • maize
  • grain yield
  • water use efficiency
  • varieties
  • cultural practices
  • irrigation schedule
  • irrigation method
  • soil moisture evaporation

Published Papers (1 paper)

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Research

Article
Determining Threshold Values for a Crop Water Stress Index-Based Center Pivot Irrigation with Optimum Grain Yield
Agriculture 2021, 11(10), 958; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture11100958 - 02 Oct 2021
Viewed by 675
Abstract
The temperature-based crop water stress index (CWSI) can accurately reflect the extent of crop water deficit. As an ideal carrier of onboard thermometers to monitor canopy temperature (Tc), center pivot irrigation systems (CPIS) have been widely used in precision irrigation. However, [...] Read more.
The temperature-based crop water stress index (CWSI) can accurately reflect the extent of crop water deficit. As an ideal carrier of onboard thermometers to monitor canopy temperature (Tc), center pivot irrigation systems (CPIS) have been widely used in precision irrigation. However, the determination of reliable CWSI thresholds for initiating the CPIS is still a challenge for a winter wheat–summer maize cropping system in the North China Plain (NCP). To address this problem, field experiments were carried out to investigate the effects of CWSI thresholds on grain yield (GY) and water use efficiency (WUE) of winter wheat and summer maize in the NCP. The results show that positive linear functions were fitted to the relationships between CWSI and canopy minus air temperature (Tc − Ta) (r2 > 0.695), and between crop evapotranspiration (ETc) and Tc (r2 > 0.548) for both crops. To make analysis comparable, GY and WUE data were normalized to a range of 0.0 to 1.0, corresponding the range of CWSI. With the increase in CWSI, a positive linear relationship was observed for WUE (r2 = 0.873), while a significant inverse relationship was found for the GY (r2 = 0.915) of winter wheat. Quadratic functions were fitted for both the GY (r2 = 0.856) and WUE (r2 = 0.629) of summer maize. By solving the cross values of the two GY and WUE functions for each crop, CWSI thresholds were proposed as being 0.322 for winter wheat, and 0.299 for summer maize, corresponding to a Tc − Ta threshold value of 0.925 and 0.498 °C, respectively. We conclude that farmers can achieve the dual goals of high GY and high WUE using the optimal thresholds proposed for a winter wheat–summer maize cropping system in the NCP. Full article
(This article belongs to the Special Issue Optimizing Grain Yield and Water Use Efficiency in Maize Production)
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