Abstract
Optimum soybean (Glycine max (L) Merr.) production requires information on the interaction between cultivars, population densities and fertilizer nutrients as related to climate and region. Consequently, field experiments were conducted to determine the effects of N-fertilizer rate, plant population and cultivar on soybean nodulation and grain yield on two soils in southern Quebec. N-fertilizer application consistently depressed soybean nodulation, but it improved soybean growth where initial soil inorganic-N levels were low. High plant population densities had little effect on individual plant nodulation, but they increased fresh nodule mass per unit area. Grain yields were increased with high plant population densities. The two cultivars tested, Apache and Maple Arrow, generally produced similar grain yields on the Ste. Rosalie soil, where yields were low due to moisture stress or low initial inorganic-N levels. On the more productive Ormstown soil, Apache produced higher grain yields than Maple Arrow.Key words: Glycine max (L.) Merr., N fertilization, plant population, nodulation, grain yield
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Claims 7
Claim · model-written summary
N-fertilizer application depressed soybean nodulation.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- N-fertilizer applicatione0
- Outcome
- soybean nodulatione0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“N-fertilizer application consistently depressed soybean nodulation”
Claim · model-written summary
N-fertilizer application improved soybean growth.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- soybean growthe1
- Direction
- improvede1
- Qualifier
- where initial soil inorganic-N levels were lowe1
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e1“but it improved soybean growth where initial soil inorganic-N levels were low”
Claim · model-written summary
High plant population densities little effect individual plant nodulation.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- High plant population densitiese2
- Outcome
- individual plant nodulatione2
- Direction
- little effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e2“High plant population densities had little effect on individual plant nodulation”
Claim · model-written summary
High plant population densities increased fresh nodule mass per unit area.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- fresh nodule mass per unit areae3
- Direction
- increasede3
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e3“but they increased fresh nodule mass per unit area”
Claim · model-written summary
high plant population densities increased Grain yields.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- high plant population densitiese4
- Outcome
- Grain yieldse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e4“Grain yields were increased with high plant population densities.”
Claim · model-written summary
Apache and Maple Arrow had generally similar grain yields on Ste. Rosalie soil.
- Taxon
- SoybeanGlycine maxt0
- Material
- Apache and Maple Arrowe5
- Outcome
- similar grain yieldse5
- Direction
- similare5
- Qualifier
- where yields were low due to moisture stress or low initial inorganic-N levelse5
- Setting
- Ste. Rosalie soile5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e5“The two cultivars tested, Apache and Maple Arrow, generally produced similar grain yields on the Ste. Rosalie soil, where yields were low due to moisture stress or low initial inorganic-N levels.”
Claim · model-written summary
Apache yielded more grain than Maple Arrow on Ormstown soil.
- Taxon
- SoybeanGlycine maxt0
- Material
- Apachee6
- Outcome
- grain yieldse6
- Direction
- highere6
- Comparator
- Maple Arrowe6
- Setting
- Ormstown soile6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e6“On the more productive Ormstown soil, Apache produced higher grain yields than Maple Arrow.”
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