Abstract
Three different soybean [Glycine max (L.) Merr.] cultivars (A-3127, Derry, and Yemsoy) were evaluated for dry matter (DM) yield, plant components, and crop growth rate (CGR) at different row spacings and harvesting stages in 3 locations with Mediterranean-type climate in a split-split plot design with 3 replications in 2009 and 2010. In addition, crude protein (CP), crude protein yield (CPY), acid detergent fiber (ADF), neutral detergent fiber (NDF), total digestible nutrients (TDN), and relative feed value (RFV) of harvested forage soybeans were determined at the Bursa (Turkey) location. Increased row spacings significantly reduced DM yield at all locations. Combined over other main effects, the 25-cm row spacing produced 35% more DM yield than the 75-cm row spacing. Row spacings greatly affected DM yield at the R5 and particularly the R7 stage, but this effect was minimal at the R1 stage. The forage-type cultivar Derry produced significantly higher DM yield in all locations, particularly at the R5 and R7 stages. The constituent components of DM were similar at different row spacings of soybean cultivars. In general, the CGR decreased from 25-cm row spacing to 75-cm row spacing in all locations, and the CGR of the cultivars varied significantly according to harvest period, row spacing, and location. Derry had a significantly higher CGR than the other cultivars in the Antalya and Bursa locations. Quality characteristics of soybean forage were not significantly affected by row spacing and showed little effect by cultivar. Harvest stage significantly affected CP, ADF, NDF, TDN, and RFV concentrations of soybean forage. It was concluded that in Mediterranean environments forage-type soybeans (i.e. Derry) can be seeded in narrow rows (25 cm) at high plant population (100 kg ha^{-1}) and offer the most DM yield when harvested at later R stages (e.g., R7) rather than at the early reproductive stage.
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 13
Claim · model-written summary
Wider row spacing significantly reduced soybean dry matter yield at every location.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Increased row spacingse0
- Outcome
- DM yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased row spacings significantly reduced DM yield at all locations.”
t0“soybean”
Claim · model-written summary
A 25-cm spacing yielded 35% more dry matter than a 75-cm spacing.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 25-cm row spacinge0
- Outcome
- DM yielde0
- Direction
- moree0
- Value
- 35%e0
- Comparator
- 75-cm row spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 25-cm row spacing produced 35% more DM yield than the 75-cm row spacing.”
t0“soybean”
Claim · model-written summary
Spacing affected dry matter yield strongly at R5 and especially R7, but minimally at R1.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- R5 and particularly the R7 stagee0
- Treatment
- Row spacingse0
- Outcome
- DM yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Row spacings greatly affected DM yield at the R5 and particularly the R7 stage, but this effect was minimal at the R1 stage.”
t0“soybean”
Claim · model-written summary
Derry had significantly higher dry matter yield across locations, especially at R5 and R7.
- Taxon
- soybeanGlycine maxt0
- Material
- Derrye0
- Organ / stage
- R5 and R7 stagese0
- Outcome
- DM yielde0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The forage-type cultivar Derry produced significantly higher DM yield in all locations, particularly at the R5 and R7 stages.”
t0“soybean”
Claim · model-written summary
Dry matter components were similar across row spacings.
- Taxon
- soybeanGlycine maxe0
- Treatment
- different row spacingse0
- Outcome
- constituent components of DMe0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The constituent components of DM were similar at different row spacings of soybean cultivars.”
Claim · model-written summary
Soybean crop growth rate generally fell from 25-cm to 75-cm spacing.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 75-cm row spacinge0
- Outcome
- CGRe0
- Direction
- decreasede0
- Comparator
- 25-cm row spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CGR decreased from 25-cm row spacing to 75-cm row spacing in all locations”
t0“soybean”
Claim · model-written summary
Cultivar crop growth rate varied significantly with harvest period, spacing and location.
- Taxon
- soybeanGlycine maxt0
- Treatment
- row spacinge0
- Outcome
- CGR of the cultivarse0
- Setting
- locatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CGR of the cultivars varied significantly according to harvest period, row spacing, and location.”
t0“soybean”
Claim · model-written summary
Derry had significantly higher crop growth rate than other cultivars at Antalya and Bursa.
- Taxon
- soybeanGlycine maxt0
- Material
- Derrye0
- Outcome
- CGRe0
- Direction
- highere0
- Comparator
- the other cultivarse0
- Setting
- Antalya and Bursa locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Derry had a significantly higher CGR than the other cultivars in the Antalya and Bursa locations.”
t0“soybean”
Claim · model-written summary
Row spacing did not significantly affect soybean forage quality traits.
- Taxon
- soybeanGlycine maxe0
- Treatment
- row spacinge0
- Outcome
- Quality characteristics of soybean foragee0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quality characteristics of soybean forage were not significantly affected by row spacing”
Claim · model-written summary
Cultivar had little effect on forage quality.
- Taxon
- soybeanGlycine maxt0
- Material
- cultivare0
- Outcome
- little effecte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“showed little effect by cultivar.”
t0“soybean”
Claim · model-written summary
Harvest stage significantly affected CP, ADF and NDF concentrations.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- Harvest stagee0
- Outcome
- CP, ADF, NDFe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvest stage significantly affected CP, ADF, NDF, TDN, and RFV concentrations of soybean forage.”
Claim · model-written summary
Harvest stage significantly affected TDN and RFV concentrations.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- Harvest stagee0
- Outcome
- TDN, and RFV concentrationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvest stage significantly affected CP, ADF, NDF, TDN, and RFV concentrations of soybean forage.”
Claim · model-written summary
The authors recommend narrow rows and late R-stage harvest for high forage soybean dry matter yield.
- Taxon
- soybeansGlycine maxe0
- Material
- Derrye0
- Outcome
- seeded in narrow rows (25 cm) at high plant population (100 kg ha^{-1}) and offer the most DM yield when harvested at later R stages (e.g., R7)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“forage-type soybeans (i.e. Derry) can be seeded in narrow rows (25 cm) at high plant population (100 kg ha^{-1}) and offer the most DM yield when harvested at later R stages (e.g., R7) rather than at the early reproductive stage.”
The same questions in other papers
density · quality: general · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- no effect
- positive
density · growth · Glycine max (soybean)Positive and negative results
58 papers in the same direction as this paper · 23 in the opposite direction
- no effect
- positive
- negative
78 papers more in this group
See all 82 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.