Paper · RePEc: Research Papers in Economics

Increasing Rates of Phosphate Fertilizer with and without Controlled Release on Corn and Soybean in the Brazilian Cerrado Region

Luiz Cláudio Garcia; Felipe Augusto Rogrigues Vaurof; Welington Massinham; et al.

4
claims
8
verbatim quotes
0
citations
1
research areas
—
Not open access

Abstract

The objective of this study was to evaluate the efficiency of controlled release technology as well as testing different rates for P fertilization. This research was carried out in Midwest Brazil in the Cerrado region. The soil is characterized as a Ferralsol. We tested two commercial fertilizers with and without P controlled release technology and application rates of 50, 75, 100 and 125% of the recommended rate for each fertilizer. Our results demonstrated that phosphate fertilization significantly increased corn yield components from the second season after the operation. We could see that applications of 50% of the recommended rate resulted in the same crop yield levels of the higher rates (75, 100 and 125%) for both fertilizers. The use of controlled release technology did not result in higher crop yield levels for soybean and corn.

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 4

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Phosphate fertilization significantly increased corn yield components from the second season.

Treatment
phosphate fertilizatione0
Outcome
corn yield componentse0
Direction
increasede0
Qualifier
from the second season after the operatione0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn and Soybean”

✓ located verbatim in the source · title, characters 80–96 · show in text ↑
e0

“phosphate fertilization significantly increased corn yield components from the second season after the operation”

✓ located verbatim in the source · abstract, characters 468–580 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The 50% recommended phosphate rate yielded the same crop yield as higher rates for both fertilizers.

Treatment
50% of the recommended ratee0
Outcome
crop yield levelse0
Direction
samee0
Qualifier
for both fertilizerse0
Comparator
higher rates (75, 100 and 125%)e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn and Soybean”

✓ located verbatim in the source · title, characters 80–96 · show in text ↑
e0

“applications of 50% of the recommended rate resulted in the same crop yield levels of the higher rates (75, 100 and 125%) for both fertilizers”

✓ located verbatim in the source · abstract, characters 600–742 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Controlled release technology did not raise soybean yield.

Taxon
SoybeanGlycine maxt0
Treatment
controlled release technologye0
Outcome
crop yield levels for soybeane0
Direction
did not result in highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Corn and Soybean”

✓ located verbatim in the source · title, characters 80–96 · show in text ↑
e0

“The use of controlled release technology did not result in higher crop yield levels for soybean and corn”

✓ located verbatim in the source · abstract, characters 744–848 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Controlled release technology did not raise corn yield.

Treatment
controlled release technologye0
Outcome
crop yield levels for soybean and corne0
Direction
did not result in highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn and Soybean”

✓ located verbatim in the source · title, characters 80–96 · show in text ↑
e0

“The use of controlled release technology did not result in higher crop yield levels for soybean and corn”

✓ located verbatim in the source · abstract, characters 744–848 · show in text ↑

phosphate · yield · Zea mays (maize)Results differ

23 papers: 20 positive, 3 negative or no effect

19 papers in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. no effect
  3. no effect

19 papers more in this group

See all 23 papers →

fertilization · yield · Glycine max (soybean)Positive and negative results

1,192 papers: 1,021 positive, 171 negative or no effect

170 papers in the same direction as this paper · 1,021 in the opposite direction

  1. positive
  2. positive
  3. positive

1,188 papers more in this group

See all 1,192 papers →

fertilization · yield · Zea mays (maize)Positive and negative results

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

3,904 papers more in this group

See all 3,908 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.