Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Soil Bulk Density and Penetration Resistance under Different Tillage and Crop Management Systems and Their Relationship with Barley Root Growth

J. Lampurlanés and C. Cantero-Martínez*

Departament de Producció Vegetal i Ciència Forestal, Universitat de Lleida–IRTA, Rovira Roure, 177, 25198 Lleida, Spain



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Fig. 1. Daily rainfall and tillage operations. T1, subsoiling and cultivation in subsoil tillage (ST) plots; T2, cultivation in ST and minimum tillage (MT) plots; T3, cultivation in ST and MT fallow plots.

 


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Fig. 2. Bulk density (BD) trends for three tillage systems in the deep soil: subsoil tillage (ST), minimum tillage (MT), and no-tillage (NT).

 


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Fig. 3. Penetration resistance (PR) profiles in the three strips at different times for the three tillage systems in the deep soil: subsoil tillage (ST), minimum tillage (MT), and no-tillage (NT).

 


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Fig. 4. Penetration resistance (PR) changes in time for the three strips and the two tillage systems in the shallow soil: minimum tillage (MT) and no-tillage (NT).

 


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Fig. 5. Two penetration resistance (PR) profiles in the fallow strip showing the largest PR differences between the tillage systems in the shallow soil: minimum tillage (MT) and no-tillage (NT).

 





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