A Quantitative Comparison of Conventional and Conservation Tillage of Diverse Agro‐Ecologies

A detailed insight on global yield change of crops, soil quality parameters, and water‐nutrient‐energy nexus and biotic factors under conservation tillage (CT) in comparison to conventional tillage (CONT) is limited. We summarized the impacts of CT on yields, profitability, soil quality, and ecosystem sustainability in comparison to CONT. Globally, average yields of crops increased by 3.7% (p < 0.05) with adoption of CT (> 3 years) compared to CONT. The CT has led to a significant improvement in crop productivity in North America (+6.2%) and Australia/Oceania (+21.4%) over CONT. Similarly, positive changes in yields with CT, although nonsignificant, were noted in Asia, South America, Europe, and Africa. The CT significantly increased the yields (+4.0%) of cereal crops. Among the crops, yield increase under CT was the highest for sorghum (110.1%) and lowest for soybean (1.3%). Adoption of CT for > 10 years (11–20 years) could increase yields of crops up to 6%–18%. Notably, CT resulted in improved soil aggregation with greater proportion of macroaggregates (+40%), soil organic carbon (+19.1%), and microbial biomass carbon (+44%) across diverse ecologies over CONT. Despite higher emissions of nitrous oxide, the net global warming potential was consistently lower in CT‐based systems than CONT. The CT could result in 25% increase in mean grain yield of crops with 22% higher net returns and 27% energy saving across regions than CONT. The CA can reduce soil bulk density (by 6.2%), increase aggregate stability (by 30%), and enhance infiltration rate (by 53%) as compared with CONT over a large agro‐ecologies.

• Publication year

  2025

• Venue

  Land Degradation &amp; Development

• Publication date

  2025-02-08

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1002/ldr.5511
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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