Abstract
Abstract Soil erosion and moisture retention are major concerns of soybean growers. Conservation tillage provides residue cover to reduce soil loss and water evaporation. This study was conducted on a Tiptonville silt loam near Portageville, MO, USA. to determine the effect of tillage system and planting date on soybean [Glycine max (L.) Merrill] root growth and distribution. Tillage systems were conventional (clean) tillage, ridge tillage, and no‐tillage. ‘Essex’ soybean was planted on 14 May, 15 June, and 7 July in 1992 and 12 May, 2 June, and 21 June in 1993. Roots were observed 30 and 60 days after emergence (DAE) using a minirhizotron system. Stand density was not affected by tillage in either year or by planting date in 1992. Tillage did not effect rooting depth in either year. In 1992, rooting depth 30 DAE was greater for the 14 May planting date than for either of the other two planting dates. No other planting date effects on rooting depth were found. Among soil depths, root length density (RLD) was greatest for the 14 to 26 cm depth in 1992 and for the 0 to 13 cm depth in 1993. Neither tillage system nor planting date affected RLD in either year and there was no interaction between these main effects and soil depths. The largest changes in RLD (CRLD) were observed in the 14 to 26 cm and 27 to 39 cm depths in 1992 and the 0 to 13 cm depth in 1993. Tillage did not planting date in 1992 and the 12 May and 2 June planting dates in 1993 produced the highest yields. Tillage did not affect yield and there was no interaction between tillage and planting date.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Tillage did not affect soybean stand density in either year.
- Taxon
- soybean
Glycine maxt0 - Treatment
- tillagee1
- Outcome
- Stand densitye1
- Direction
- not affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“Stand density was not affected by tillage in either year or by planting date in 1992”
Claim · model-written summary
Tillage did not affect soybean rooting depth in either year.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tillagee1
- Outcome
- rooting depthe1
- Direction
- did not effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“Tillage did not effect rooting depth in either year”
Claim · model-written summary
In 1992, soybean rooting depth at 30 DAE was greater for the 14 May planting than for either of the other two planting dates.
- Taxon
- soybeanGlycine maxt0
- Treatment
- planting datee1
- Outcome
- rooting depth 30 DAEe1
- Direction
- greatere1
- Qualifier
- In 1992e1
- Comparator
- either of the other two planting datese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“In 1992, rooting depth 30 DAE was greater for the 14 May planting date than for either of the other two planting dates”
Claim · model-written summary
No other planting date effects on soybean rooting depth were found.
- Taxon
- soybeanGlycine maxt0
- Treatment
- planting datee1
- Outcome
- rooting depthe1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“No other planting date effects on rooting depth were found”
Claim · model-written summary
Soybean root length density (RLD) was greatest in the 14 to 26 cm depth in 1992 and in the 0 to 13 cm depth in 1993.
- Taxon
- soybeanGlycine maxt0
- Outcome
- root length density (RLD)e1
- Qualifier
- greatest for the 14 to 26 cm depth in 1992 and for the 0 to 13 cm depth in 1993e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“root length density (RLD) was greatest for the 14 to 26 cm depth in 1992 and for the 0 to 13 cm depth in 1993”
Claim · model-written summary
Tillage system did not affect soybean RLD in either year.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tillage systeme1
- Outcome
- RLDe1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“Neither tillage system nor planting date affected RLD in either year and there was no interaction between these main effects and soil depths”
Claim · model-written summary
Planting date did not affect soybean RLD in either year.
- Taxon
- soybeanGlycine maxt0
- Treatment
- planting datee1
- Outcome
- RLDe1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“Neither tillage system nor planting date affected RLD in either year and there was no interaction between these main effects and soil depths”
Claim · model-written summary
There was no interaction between tillage system and planting date on RLD across soil depths.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tillage system nor planting datee1
- Outcome
- interaction between these main effects and soil depthse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“Neither tillage system nor planting date affected RLD in either year and there was no interaction between these main effects and soil depths”
Claim · model-written summary
The largest soybean RLD changes were observed in the 14 to 26 cm and 27 to 39 cm depths in 1992 and the 0 to 13 cm depth in 1993.
- Taxon
- soybeanGlycine maxt0
- Outcome
- The largest changes in RLD (CRLD)e1
- Qualifier
- observed in the 14 to 26 cm and 27 to 39 cm depths in 1992 and the 0 to 13 cm depth in 1993e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“The largest changes in RLD (CRLD) were observed in the 14 to 26 cm and 27 to 39 cm depths in 1992 and the 0 to 13 cm depth in 1993”
Claim · model-written summary
Tillage did not affect soybean yield.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tillagee1
- Outcome
- yielde1
- Direction
- did not affecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“Tillage did not affect yield and there was no interaction between tillage and planting date”
Claim · model-written summary
The 12 May and 2 June planting dates in 1993 produced the highest soybean yields.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 12 May and 2 June planting datese1
- Outcome
- yieldse1
- Direction
- higheste1
- Qualifier
- in 1993e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“the 12 May and 2 June planting dates in 1993 produced the highest yields”
Claim · model-written summary
There was no interaction between tillage and planting date on soybean yield.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tillage and planting datee1
- Outcome
- yielde1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of planting date and tillage system on soybean root growth”
e1“Tillage did not affect yield and there was no interaction between tillage and planting date”
The same questions in other papers
tillage · growth · Glycine max (soybean)Results differ
31 papers in the same direction as this paper · 52 in the opposite direction
- positive
- negative
- negative
80 papers more in this group
See all 84 papers →sowing time · growth · Glycine max (soybean)Positive and negative results
34 papers in the same direction as this paper · 37 in the opposite direction
- negative
- negative
- positive
68 papers more in this group
See all 72 papers →sowing time · yield · Glycine max (soybean)Positive and negative results
114 papers in the same direction as this paper · 89 in the opposite direction · 3 reporting no difference from an alternative
- positive
- negative
- negative
203 papers more in this group
See all 207 papers →tillage · yield · Glycine max (soybean)Positive and negative results
125 papers in the same direction as this paper · 264 in the opposite direction
- positive
- positive
- positive
386 papers more in this group
See all 390 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.