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Long-Term Optimization of Agronomic Practices Increases Water Storage Capacity and Available Water in Soil

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Title: Long-Term Optimization of Agronomic Practices Increases Water Storage Capacity and Available Water in Soil
Authors: Feng Chang, Wenjia Yang, Shiwen Wang, Lina Yin, Xiping Deng
Source: Agronomy, Vol 14, Iss 10, p 2286 (2024)
Publisher Information: MDPI AG, 2024.
Publication Year: 2024
Collection: LCC:Agriculture
Subject Terms: wheat yield, saturated hydraulic conductivity, field capacity, soil available water, soil organic carbon, manure, Agriculture
More Details: In drylands, where the annual precipitation is low and erratic, improving the water storage capacity and the available water in the soil is crucial for crop production. To explore the effect of long-term agronomic management on water storage capacity and available water in the soil, four agronomic management systems were used (including the farmer’s management model (FM), the high nitrogen input model (HN), the manure amendment model (MM), and the biochar amendment model (BM)) for eight consecutive years, and the variation in wheat yield and soil hydraulic, physical, and chemical properties in the 0–100 cm soil profile were investigated. The management practices varied in terms of seeding rates, nitrogen (N)-application strategies, and the application of manure or biochar. The results showed that, under the manure amendment model (MM), the wheat yield was increased by 17–35%, and the water-use efficiency was increased by 14–29% when compared to the farmer’s management model (FM) and the high nitrogen input model (HN). However, no significant differences in wheat yield and water-use efficiency were found under the biochar amendment model (BM) compared to the HN. The high yield and water-use efficiency under the MM were mainly due to the higher saturated hydraulic conductivity, soil saturated water content, field capacity, and soil available water content, which led to an increase in the available water storage in the 0–100 cm soil profile by 29–48 mm. Furthermore, the MM also improved soil organic matter, porosity, root length density, and root weight density and reduced the soil bulk density, which are beneficial for the improvement of the above soil hydraulic properties. Therefore, it is a practical way to ensure high yield and high efficiency of crops in dryland by improving water storage capacity and the available water in the soil, which can be profoundly regulated by agronomic management.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2073-4395
Relation: https://www.mdpi.com/2073-4395/14/10/2286; https://doaj.org/toc/2073-4395
DOI: 10.3390/agronomy14102286
Access URL: https://doaj.org/article/33e37a888fc4466e9f20be82b9ee53f1
Accession Number: edsdoj.33e37a888fc4466e9f20be82b9ee53f1
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  Data: Long-Term Optimization of Agronomic Practices Increases Water Storage Capacity and Available Water in Soil
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  Data: <searchLink fieldCode="AR" term="%22Feng+Chang%22">Feng Chang</searchLink><br /><searchLink fieldCode="AR" term="%22Wenjia+Yang%22">Wenjia Yang</searchLink><br /><searchLink fieldCode="AR" term="%22Shiwen+Wang%22">Shiwen Wang</searchLink><br /><searchLink fieldCode="AR" term="%22Lina+Yin%22">Lina Yin</searchLink><br /><searchLink fieldCode="AR" term="%22Xiping+Deng%22">Xiping Deng</searchLink>
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  Data: Agronomy, Vol 14, Iss 10, p 2286 (2024)
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  Data: MDPI AG, 2024.
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  Data: <searchLink fieldCode="DE" term="%22wheat+yield%22">wheat yield</searchLink><br /><searchLink fieldCode="DE" term="%22saturated+hydraulic+conductivity%22">saturated hydraulic conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22field+capacity%22">field capacity</searchLink><br /><searchLink fieldCode="DE" term="%22soil+available+water%22">soil available water</searchLink><br /><searchLink fieldCode="DE" term="%22soil+organic+carbon%22">soil organic carbon</searchLink><br /><searchLink fieldCode="DE" term="%22manure%22">manure</searchLink><br /><searchLink fieldCode="DE" term="%22Agriculture%22">Agriculture</searchLink>
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  Label: Description
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  Data: In drylands, where the annual precipitation is low and erratic, improving the water storage capacity and the available water in the soil is crucial for crop production. To explore the effect of long-term agronomic management on water storage capacity and available water in the soil, four agronomic management systems were used (including the farmer’s management model (FM), the high nitrogen input model (HN), the manure amendment model (MM), and the biochar amendment model (BM)) for eight consecutive years, and the variation in wheat yield and soil hydraulic, physical, and chemical properties in the 0–100 cm soil profile were investigated. The management practices varied in terms of seeding rates, nitrogen (N)-application strategies, and the application of manure or biochar. The results showed that, under the manure amendment model (MM), the wheat yield was increased by 17–35%, and the water-use efficiency was increased by 14–29% when compared to the farmer’s management model (FM) and the high nitrogen input model (HN). However, no significant differences in wheat yield and water-use efficiency were found under the biochar amendment model (BM) compared to the HN. The high yield and water-use efficiency under the MM were mainly due to the higher saturated hydraulic conductivity, soil saturated water content, field capacity, and soil available water content, which led to an increase in the available water storage in the 0–100 cm soil profile by 29–48 mm. Furthermore, the MM also improved soil organic matter, porosity, root length density, and root weight density and reduced the soil bulk density, which are beneficial for the improvement of the above soil hydraulic properties. Therefore, it is a practical way to ensure high yield and high efficiency of crops in dryland by improving water storage capacity and the available water in the soil, which can be profoundly regulated by agronomic management.
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        Type: general
      – SubjectFull: saturated hydraulic conductivity
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      – SubjectFull: field capacity
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