Abstract
Abstract Two cultivars and three advanced lines of soybean (Glycine max (L.) Merr.) were planted in Evesboro loamy sand soil in plasticlined steel drums in 1974. Potassium fertilizer (KCl) at 0, 56, or 223 kg/ha actual K was added to the soil and the soybean leaves and pods were evaluated for gross photosynthesis and respiration, mineral concentration, seed yield and seed quality. Disease incidence in the seed was measured. Potassium applications to the soil did not influence gross photosynthesis and dark respiration of leaves or pods. Yield was significantly increased in those plants receiving the high rate of K fertilizer. The cultivars ‘York’ and ‘Essex’ had higher yield than did the advanced lines of soybeans tested. Apparently the soil type used was not effected by the additional fertilizer K because soil tests made the following spring showed no difference in soil test K level from the check or the K supplemented treatments. Thus, disease incidence, seed quality, leaf tissue K, Mg, Ca, P and N and pod tissue N were unaffected by the supplemental amounts of K added to the soil.
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Claims 6
Claim · model-written summary
Potassium fertilizer did not influence soybean leaf or pod gross photosynthesis and dark respiration.
- Taxon
- soybean
Glycine maxe1 - Treatment
- Potassium applications to the soile0
- Outcome
- gross photosynthesis and dark respiration of leaves or podse0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium applications to the soil did not influence gross photosynthesis and dark respiration of leaves or pods.”
e1“soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
High potassium fertilizer significantly increased soybean yield.
- Taxon
- soybeanGlycine maxe1
- Treatment
- high rate of K fertilizere0
- Outcome
- Yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield was significantly increased in those plants receiving the high rate of K fertilizer.”
e1“soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
York and Essex soybean cultivars yielded more than the advanced lines.
- Taxon
- soybeansGlycine maxe0
- Material
- ‘York’ and ‘Essex’e0
- Outcome
- yielde0
- Direction
- highere0
- Comparator
- advanced lines of soybeanse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivars ‘York’ and ‘Essex’ had higher yield than did the advanced lines of soybeans tested.”
Claim · model-written summary
Supplemental K did not alter spring soil test K levels.
- Taxon
- soybeanGlycine maxe1
- Treatment
- K supplemented treatmentse0
- Outcome
- soil test K levele0
- Direction
- no differencee0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil tests made the following spring showed no difference in soil test K level from the check or the K supplemented treatments.”
e1“soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Supplemental K left soybean seed disease incidence and quality unaffected.
- Taxon
- soybeanGlycine maxe1
- Treatment
- supplemental amounts of K added to the soile0
- Outcome
- disease incidence, seed qualitye0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thus, disease incidence, seed quality, leaf tissue K, Mg, Ca, P and N and pod tissue N were unaffected by the supplemental amounts of K added to the soil.”
e1“soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Supplemental K did not alter soybean leaf K, Mg, Ca, P or N, or pod N.
- Taxon
- soybeanGlycine maxe1
- Treatment
- supplemental amounts of K added to the soile0
- Outcome
- leaf tissue K, Mg, Ca, P and N and pod tissue Ne0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thus, disease incidence, seed quality, leaf tissue K, Mg, Ca, P and N and pod tissue N were unaffected by the supplemental amounts of K added to the soil.”
e1“soybean (Glycine max (L.) Merr.)”
The same questions in other papers
potassium · physiology: photosynthesis · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
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See all 13 papers →fertilization · yield · Glycine max (soybean)Positive and negative results
1,020 papers in the same direction as this paper · 155 in the opposite direction · 16 reporting no difference from an alternative
- positive
- no effect
- no effect
1,188 papers more in this group
See all 1,192 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.