Abstract
Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions,in which seminal roots were divided equally between two compartments in partitioned galvanized steel containers containing Lou soil.Four types of soil treatments were imposed:low density (both compartments packed to 1.20 g·cm -3 ),middle density (both compartments packed to 1.33 g·cm -3 ),high density (both compartments packed to 1.45 g·cm -3 ),and mix density (one compartment packed to 1.20 g·cm -3 ,the other to 1.45 g·cm -3 ).The results showed that high soil bulk density and low matric potential effects on root growth was independently significant,but low matric potential effects was more profound,and there was also an interactive negative effect of them upon the growth.There was a significant decrease in root length and also in root dry matter when plants are grown on compacted soils or the soil matric potential reach -0.86 MPa from -0.17 MPa.In high bulk density soils,not only was there a reduction of root length but there was increase in the diameter of roots.In contrast,when plants were grown in soil of mixed bulk density,there was enhanced growth of root in low density soil to compensate or even overcompensate for reduced growth in high density soil.
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Claims 8
Claim · model-written summary
High soil bulk density and low matric potential each had an independently significant effect on maize root growth.
Zea maysNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e1“high soil bulk density and low matric potential effects on root growth was independently significant”
Claim · model-written summary
Low soil matric potential had a more profound effect on maize root growth than high bulk density.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e1“high soil bulk density and low matric potential effects on root growth was independently significant”
e2“low matric potential effects was more profound”
Claim · model-written summary
High bulk density combined with low matric potential had an interactive negative effect on maize root growth.
- Treatment
- high soil bulk density and low matric potentiale1
- Outcome
- growthe3
- Direction
- negativee3
- Qualifier
- interactivee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e1“high soil bulk density and low matric potential effects on root growth was independently significant”
e3“there was also an interactive negative effect of them upon the growth”
Claim · model-written summary
Compacted soil or a soil matric potential of -0.86 MPa significantly decreased maize root length relative to -0.17 MPa.
- Treatment
- compacted soils or the soil matric potential reach -0.86 MPae4
- Outcome
- root lengthe4
- Direction
- decreasee4
- Comparator
- -0.17 MPae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e4“There was a significant decrease in root length and also in root dry matter when plants are grown on compacted soils or the soil matric potential reach -0.86 MPa from -0.17 MPa”
Claim · model-written summary
Compacted soil or a soil matric potential of -0.86 MPa significantly decreased maize root dry matter relative to -0.17 MPa.
- Treatment
- compacted soils or the soil matric potential reach -0.86 MPae4
- Outcome
- root dry mattere4
- Direction
- decreasee4
- Comparator
- -0.17 MPae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e4“There was a significant decrease in root length and also in root dry matter when plants are grown on compacted soils or the soil matric potential reach -0.86 MPa from -0.17 MPa”
Claim · model-written summary
In high bulk density soils, the diameter of maize roots increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e5“In high bulk density soils,not only was there a reduction of root length but there was increase in the diameter of roots”
Claim · model-written summary
In high bulk density soils, maize root length was reduced.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e5“In high bulk density soils,not only was there a reduction of root length but there was increase in the diameter of roots”
Claim · model-written summary
In mixed bulk density soil, root growth in the low density compartment was enhanced, compensating for or overcompensating reduced growth in high density soil.
- Treatment
- mixed bulk densitye6
- Outcome
- growth of roote6
- Direction
- enhancede6
- Qualifier
- compensate or even overcompensatee6
- Comparator
- high density soile6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split root experiments were conducted on maize under both low (-0.86 MPa) and high (-0.17 MPa) soil matric potential conditions”
e6“when plants were grown in soil of mixed bulk density,there was enhanced growth of root in low density soil to compensate or even overcompensate for reduced growth in high density soil”