Abstract
Abstract No‐tillage planting of crops usually results in fewer plants per unit of row than the same planting rate with conventional planting. This research was conducted to relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield and plant growth differences on a Norfolk sandy loam soil (fineloamy, siliceous, thermic Typic Paleudult). ‘Bragg’ soybean were planted in the field with conventional and no‐till planters in 0.76 m wide rows during 1979, 1980, and 1981. Highest yields usually occurred at 20 plants m −1 . Yield, plant height, seed weight, and stem diameter differed little in relation to planting method except that seed weight was lower for no‐till plantings in the driest year (1981). Yield and plant height increased and seed weight and stem diameter decreased in relation to population density between 1.5 and 13 plants m −1 row, and then changed gradually to populations of 27 plants m −1 row. Adequate rainfall received during the pod‐fill period of 1979 (August and September) increased yield, plant height, and seed weight more than the planting method in any year.
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Claims 7
Claim · model-written summary
Soybean yield was highest at about 20 plants per metre of row.
- Taxon
- Glycine max
Glycine maxe0 - Treatment
- population densitye0
- Outcome
- yielde1
- Direction
- Higheste1
- Value
- 20 plants m −1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield”
e1“Highest yields usually occurred at 20 plants m −1”
Claim · model-written summary
Yield and plant height differed little between no-till and conventional planting.
- Taxon
- Glycine maxGlycine maxe0
- Material
- Bragge5
- Treatment
- no‐till plantingse2
- Outcome
- Yield, plant heighte2
- Direction
- differed littlee2
- Comparator
- conventionale5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield”
e2“Yield, plant height, seed weight, and stem diameter differed little in relation to planting method except that seed weight was lower for no‐till plantings in the driest year (1981)”
e5“‘Bragg’ soybean were planted in the field with conventional and no‐till planters”
Claim · model-written summary
Stem diameter differed little between no-till and conventional planting.
- Taxon
- Glycine maxGlycine maxe0
- Material
- Bragge5
- Treatment
- no‐till plantingse2
- Outcome
- stem diametere2
- Direction
- differed littlee2
- Comparator
- conventionale5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield”
e2“Yield, plant height, seed weight, and stem diameter differed little in relation to planting method except that seed weight was lower for no‐till plantings in the driest year (1981)”
e5“‘Bragg’ soybean were planted in the field with conventional and no‐till planters”
Claim · model-written summary
Seed weight was lower under no-till planting in the driest year.
- Taxon
- Glycine maxGlycine maxe0
- Material
- Bragge5
- Treatment
- no‐till plantingse2
- Outcome
- seed weighte2
- Direction
- lowere2
- Qualifier
- in the driest year (1981)e2
- Comparator
- conventionale5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield”
e2“Yield, plant height, seed weight, and stem diameter differed little in relation to planting method except that seed weight was lower for no‐till plantings in the driest year (1981)”
e5“‘Bragg’ soybean were planted in the field with conventional and no‐till planters”
Claim · model-written summary
Yield and plant height increased with population density between 1.5 and 13 plants per metre of row.
- Taxon
- Glycine maxGlycine maxe0
- Treatment
- population densitye3
- Outcome
- Yield and plant heighte3
- Direction
- increasede3
- Value
- between 1.5 and 13 plants m −1 rowe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield”
e3“Yield and plant height increased and seed weight and stem diameter decreased in relation to population density between 1.5 and 13 plants m −1 row”
Claim · model-written summary
Seed weight and stem diameter decreased with population density between 1.5 and 13 plants per metre of row.
- Taxon
- Glycine maxGlycine maxe0
- Treatment
- population densitye3
- Outcome
- seed weight and stem diametere3
- Direction
- decreasede3
- Value
- between 1.5 and 13 plants m −1 rowe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield”
e3“Yield and plant height increased and seed weight and stem diameter decreased in relation to population density between 1.5 and 13 plants m −1 row”
Claim · model-written summary
Adequate rainfall during the 1979 pod-fill period increased yield, plant height and seed weight more than planting method did.
- Taxon
- Glycine maxGlycine maxe0
- Treatment
- Adequate rainfalle4
- Outcome
- yield, plant height, and seed weighte4
- Direction
- increasede4
- Comparator
- planting methode4
- Setting
- pod‐fill period of 1979e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relate soybean [ Glycine max (L.) Merr.] population density under conventional and no‐till plantings to yield”
e4“Adequate rainfall received during the pod‐fill period of 1979 (August and September) increased yield, plant height, and seed weight more than the planting method in any year”
The same questions in other papers
rainfall · yield · Glycine max (soybean)Results differ
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- negative
- negative
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125 papers in the same direction as this paper · 264 in the opposite direction
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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.