Abstract
Soybean is an important grain crop for Brazil, and phosphorus (P) plays an important role in improving yield of this crop in Brazilian Oxisols. Data are limited on influence of P sources and rate on soybean yield, yield components, and P-use efficiency. A field experiment was conducted for 3 consecutive years to determine response of soybean to three fertilizers (single superphosphate, Yoorin, and Arad) with 0, 17.5, 35, and 52.5 kg P ha−1 (0, 40, 80 and 120 kg P2O5 ha−1). Grain yield was significantly influenced by phosphorus fertilization. Overall, maximum grain yield was produced by application of single superphosphate, followed by Yoorin and Arad. Number of grains per pod and 100-grain weights were also influenced significantly by P fertilization. Shoot dry weight, number of pods per plant, and grain harvest index had a significant positive association with grain yield. Phosphorus uptake in grain was about six times more than uptake in shoots, and P uptake in grain had a significant positive association with grain yield. Phosphorus-use efficiency (kg grain/kg P applied or uptake) decreased with increasing P rate, and it was greater for single superphosphate than for Yoorin and Arad sources of P fertilization. However, P-utilization efficiency (kg grain plus straw yield / P uptake in grain plus straw) was greater under Yoorin treatment compared to the two other sources of P.
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 9
Claim · model-written summary
Phosphorus fertilization significantly influenced grain yield.
- Taxon
- soybean
Glycine maxt0 - Treatment
- phosphorus fertilizatione0
- Outcome
- Grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was significantly influenced by phosphorus fertilization.”
t0“Soybean”
Claim · model-written summary
Single superphosphate produced maximum grain yield, followed by Yoorin and Arad.
- Taxon
- soybeanGlycine maxt0
- Treatment
- single superphosphatee0
- Outcome
- maximum grain yielde0
- Direction
- maximume0
- Comparator
- Yoorin and Arade0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, maximum grain yield was produced by application of single superphosphate, followed by Yoorin and Arad.”
t0“Soybean”
Claim · model-written summary
P fertilization significantly influenced grains per pod and 100-grain weights.
- Taxon
- soybeanGlycine maxt0
- Treatment
- P fertilizatione0
- Outcome
- Number of grains per pod and 100-grain weightse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of grains per pod and 100-grain weights were also influenced significantly by P fertilization.”
t0“Soybean”
Claim · model-written summary
Shoot dry weight, pods per plant, and harvest index were positively associated with grain yield.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- shoote0
- Outcome
- grain yielde0
- Direction
- positive associatione0
- Qualifier
- Shoot dry weight, number of pods per plant, and grain harvest indexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot dry weight, number of pods per plant, and grain harvest index had a significant positive association with grain yield.”
t0“Soybean”
Claim · model-written summary
P uptake in grain was about six times uptake in shoots.
- Taxon
- soybeanGlycine maxt0
- Outcome
- Phosphorus uptake in graine0
- Direction
- more thane0
- Value
- six timese0
- Comparator
- uptake in shootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus uptake in grain was about six times more than uptake in shoots”
t0“Soybean”
Claim · model-written summary
P uptake in grain was positively associated with grain yield.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- graine0
- Outcome
- grain yielde0
- Direction
- positive associatione0
- Qualifier
- P uptake in graine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P uptake in grain had a significant positive association with grain yield.”
t0“Soybean”
Claim · model-written summary
P use efficiency decreased as P rate increased.
- Taxon
- soybeanGlycine maxt0
- Treatment
- P ratee0
- Outcome
- Phosphorus-use efficiencye0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus-use efficiency (kg grain/kg P applied or uptake) decreased with increasing P rate”
t0“Soybean”
Claim · model-written summary
P use efficiency was greater for single superphosphate than Yoorin and Arad.
- Taxon
- soybeanGlycine maxt0
- Treatment
- single superphosphatee0
- Outcome
- ite0
- Direction
- greatere0
- Comparator
- Yoorin and Arade0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was greater for single superphosphate than for Yoorin and Arad sources of P fertilization”
t0“Soybean”
Claim · model-written summary
P utilization efficiency was greater under Yoorin than the other two P sources.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Yoorin treatmente0
- Outcome
- P-utilization efficiencye0
- Direction
- greatere0
- Comparator
- the two other sources of Pe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P-utilization efficiency (kg grain plus straw yield / P uptake in grain plus straw) was greater under Yoorin treatment compared to the two other sources of P.”
t0“Soybean”
The same questions in other papers
phosphorus · yield · Glycine max (soybean)Positive and negative results
302 papers in the same direction as this paper · 42 in the opposite direction · 10 reporting no difference from an alternative
- positive
- positive
- negative
351 papers more in this group
See all 355 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.