2022
Subsoiling tillage enhances wheat productivity, soil carbon and available nutrients status in dryland fields
Yan, Q., Wu, L., Dong, F., Yan, S., Zhang, Q., Li, X., Li, J., Lu, J., Yang, F., Jia, Y., Shen, Y.
Export
Subsoiling tillage enhances wheat productivity, soil carbon …
Abstract
Amis Additional tillage practices such as subsoiling (SS) and deep tillage (DT) during fallow period are beneficial to water storage and yield increases in dryland wheat fields compared with no tillage (NT). However, soil chemical characteristics responses to tillage practices that change within growth seasons are less understood. Methods This study evaluated the effects of three tillage practices (NT, SS and DT) on soil organic carbon (SOC), total nitrogen (TN), available nutrient and its relations with yield. Soil samples from five experimental years were analyzed to determine the contents of SOC, TN, and available nutrients. Soil samples from the fifth experimental year were analyzed to determine the soil aggregate and aggregate-associated C and N fractions. Results The SS and DP treatments favored grain yield, straw yield and straw carbon return compared to NT. In the whole profile (0–40 cm), the mean annual SOC stock and sequestration rate were 62.3, 59.4 and 38.5 t ha − 1 and + 0.73, + 0.59 and − 8.27 t ha − 1 yr − 1 under NT, SS and DT. The mean annual TN stock and sequestration rate were 5.45, 6.18 and 5.95 t ha − 1 and + 0.28, + 0.53 and + 0.67 t ha − 1 yr − 1 under NT, SS and DT. Higher SOC levels under SS and NT were associated with greater aggregate-associated C fractions. Similarly, soil available nutrients improved under NT and SS at 0–20 cm soil layer. Conclusions This result indicated that SS was an excellent practice for increasing wheat productivity, SOC, TN and nutrient availability synergistically in dryland wheat fields in North China.
Show all
Amis Additional tillage practices such as subsoiling (SS) and deep tillage (DT) during fallow period are beneficial to water storage and yield increases in dryland wheat fields compared with no tillage (NT). However, soil chemical characteristics responses to tillage practices that change within growth seasons are less understood. Methods This study evaluated the effects of three tillage practices (NT, SS and DT) on soil organic carbon (SOC), total nitrogen (TN), available nutrient and its relations with yield. Soil samples from five experimental years were analyzed to determine the contents of SOC, TN, and available nutrients. Soil samples from the fifth experimental year were analyzed to determine the soil aggregate and aggregate-associated C and N fractions. Results The SS and DP treatments favored grain yield, straw yield and straw carbon return compared to NT. In the whole profile (0–40 cm), the mean annual SOC stock and sequestration rate were 62.3, 59.4 and 38.5 t ha − 1 and + 0.73, + 0.59 and − 8.27 t ha − 1 yr − 1 under NT, SS and DT. The mean annual TN stock and sequestration rate were 5.45, 6.18 and 5.95 t ha − 1 and + 0.28, + 0.53 and + 0.67 t ha − 1 yr − 1 under NT, SS and DT. Higher SOC levels under SS and NT were associated with greater aggregate-associated C fractions. Similarly, soil available nutrients improved under NT and SS at 0–20 cm soil layer. Conclusions This result indicated that SS was an excellent practice for increasing wheat productivity, SOC, TN and nutrient availability synergistically in dryland wheat fields in North China.
Amis Additional tillage practices such as subsoiling (SS) and deep tillage (DT) during fallow period are beneficial to water storage and yield increases in dryland wheat fields compared with no tillage (NT). However, soil chemical characteristics responses to tillage practices that change within growth seasons are less understood. Methods This study evaluated the effects of three tillage practices (NT, SS and DT) on soil organic carbon (SOC), total nitrogen (TN), available nutrient and its relations with yield. Soil samples from five experimental years were analyzed to determine the contents of SOC, TN, and available nutrients. Soil samples from the fifth experimental year were analyzed to determine the soil aggregate and aggregate-associated C and N fractions. Results The SS and DP treatments favored grain yield, straw yield and straw carbon return compared to NT. In the whole profile (0–40 cm), the mean annual SOC stock and sequestration rate were 62.3, 59.4 and 38.5 t ha − 1 and + 0.73, + 0.59 and − 8.27 t ha − 1 yr − 1 under NT, SS and DT. The mean annual TN stock and sequestration rate were 5.45, 6.18 and 5.95 t ha − 1 and + 0.28, + 0.53 and + 0.67 t ha − 1 yr − 1 under NT, SS and DT. Higher SOC levels under SS and NT were associated with greater aggregate-associated C fractions. Similarly, soil available nutrients improved under NT and SS at 0–20 cm soil layer. Conclusions This result indicated that SS was an excellent practice for increasing wheat productivity, SOC, TN and nutrient availability synergistically in dryland wheat fields in North China.
Similar papers
Dynamics of Soil Organic Carbon and Nitrogen Fractions in Dryland Wheat Fields as Affected by Tillage Practices on the Loess Plateau of China
Wang et al. · 2026 · Agronomy
10 shared concepts
19 findings1 site
Importance of cover crops in alleviating negative effects of reduced soil tillage and promoting soil fertility in a winter wheat cropping system
Büchi et al. · 2018 · Agriculture, Ecosystems & Environment
11 shared concepts
19 findings2 sites
Soil carbon and nitrogen changes as affected by tillage system and crop biomass in a corn–soybean rotation
Al-Kaisi, Yin & Licht · 2005 · Applied Soil Ecology
9 shared concepts