Abstract
ABSTRACT The effects of P and K fertilization on soybean [ Glycine max (L.) Merr.] seed quality are unclear. Fertilization rates can have a positive effect on yield and composition in some growing locations and years but not in others. As the cost of soybean seed production increases, seed companies are interested in improving seed quality of soybeans possibly through increased soil fertilization. The objectives of this study were to determine the effect of different levels of P and K fertilization on soybean seed quality defined as seed viability, vigor, and seed composition. Seed samples were obtained from a long‐term P and K fertilization trial. Phosphorus and K treatments were 0, 28, or 56 kg P ha −1 yr −1 and 0, 66, or 132 kg K ha −1 yr −1 . Results indicated that excessive levels of P and K fertility decreased seed quality. Seed composition changed across sites and treatments, but changes were generally inconsistent. Total seed protein and oil were not significantly affected by P and K fertilization in most locations. However, linolenic acid concentrations increased with excessively high P and K fertilization while linoleic acid concentrations decreased only with P. These results indicate that excessively high levels of soil fertility may have negatively impacted seed quality.
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Claims 5
Claim · model-written summary
Excessive P and K fertility decreased soybean seed quality.
- Taxon
- soybean
Glycine maxt0 - Treatment
- excessive levels of P and K fertilitye0
- Outcome
- seed qualitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive levels of P and K fertility decreased seed quality”
t0“Soybean”
Claim · model-written summary
Seed composition varied inconsistently across sites and treatments.
- Taxon
- soybeanGlycine maxt0
- Treatment
- treatmentse0
- Outcome
- Seed compositione0
- Setting
- sitese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed composition changed across sites and treatments, but changes were generally inconsistent.”
t0“Soybean”
Claim · model-written summary
P and K fertilization did not significantly affect total seed protein and oil in most locations.
- Taxon
- soybeanGlycine maxt0
- Treatment
- P and K fertilizatione0
- Outcome
- Total seed protein and oile0
- Direction
- not significantly affectede0
- Qualifier
- in most locationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total seed protein and oil were not significantly affected by P and K fertilization in most locations.”
t0“Soybean”
Claim · model-written summary
Excessively high P and K increased linolenic acid concentration.
- Taxon
- soybeanGlycine maxt0
- Treatment
- excessively high P and K fertilizatione0
- Outcome
- linolenic acid concentrationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“linolenic acid concentrations increased with excessively high P and K fertilization”
t0“Soybean”
Claim · model-written summary
P fertilization decreased linoleic acid concentration.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Pe0
- Outcome
- linoleic acid concentrationse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“linoleic acid concentrations decreased only with P”
t0“Soybean”
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See all 134 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.