Claim · model-written summary
Crop yield was lower in areas with arid climates within the optimal tillage depth of 25 cm.
- Taxon
- wheat, maize and soybean
Glycine max
Triticum aestivum
Zea mayse1 - Outcome
- yielde2
- Direction
- lowere2
- Qualifier
- within optimal depth of 25 cm, 30 cm, and 25 to 35 cme2
- Setting
- areas with arid climatese2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“crop yield first increased within tillage depths from 25 to 35 cm, and then reduced under higher depth of deep tillage compared to conventional tillage, according to 1109 wheat, maize and soybean (WMS) yield observations”
e2“a lower yield was observed in areas with arid climates, silty and sandy soils, and lower bulk density within optimal depth of 25 cm, 30 cm, and 25 to 35 cm”
Title
The effect of deep-tillage depths on crop yield: A global meta-analysis
Shangshu Huang; Mahbub Ul Islam; Fahui Jiang Plant Soil and Environment 2023. doi:10.17221/373/2022-pse
Other claims from this paper (15)
- Intervention effect Tillage depths from 25 to 35 cm increased crop yield of wheat, maize and soybean relative to conventional tillage.
- Intervention effect Deeper tillage above 35 cm reduced crop yield of wheat, maize and soybean relative to conventional tillage.
- Observation The optimum tillage depth of WMS across the world was 35 cm, varying among regions.
- Association Crop yield was higher in areas with a humid climate under the optimal tillage depth of 40 cm.
- Association Crop yield was higher in soils with high clay contents under the optimal tillage depth of 35 cm.
- Association Crop yield was higher with large bulk density under the optimal tillage depth of 45 cm.
- Association Crop yield was lower in silty and sandy soils within the optimal tillage depth of 30 cm.
- Association Crop yield was lower with lower bulk density within the optimal tillage depth of 25 to 35 cm.
- Association Fertilizer addition mostly increased crop yield under deep tillage.
- Association Irrigation mostly increased crop yield under deep tillage.
- Association Straw returning mostly increased crop yield under deep tillage.
- Association Changing of cropping system or crop species mostly increased crop yield under deep tillage.
- Recommendation Straw returning needs a greater tillage depth.
- Observation Predicted optimum tillage depths were 30 and 35 cm in temperate and tropical regions.
- Intervention effect Optimal tillage depth increased predicted total crop yield of global WMS by 2689 million tons per year compared with conventional tillage.