Paper · 1993 · Scientia Agricola

Rates and methods of applying urea to common beans

J.C. Kiehl; R.I. Silveira; J. Brito Neto

10
claims
22
verbatim quotes
5
citations
1
research areas
✓
Open access · cc-by

Abstract

The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1) was evaluated on a Red-Yellow Latosol (Psamentic Haplortox) of Arapiraca and on a Solodic Planosol (Ustalf) of Igaci, both sandy-clay-loams located in the State of Alagoas, Brazil. Rates of 30,60 and 90 kg N/ha were applied placing the urea totally in the furrow at planting time; totally sidedressed twenty days after planting, mixed or not with the soil; or 1/3 of the amount in the furrow at planting plus 2/3 sidedressed twenty days after planting, mixed or not with the soil. Bean yield responses to nitrogen followed quadratic equations. In the Red-Yellow Latosol response to nitrogen occurred up to the rate of 66 kg N/ha, while in the Solodic Planosol the yield increased up to the highest applied rate of 90 kg N/ha. The relative yield increase for each site was 22% and 16%, respectively. Sidedressed application of the total amount of urea resulted in the lowest yields, whereas split application and furrow fertilization were the best and equally effective methods. No significant yield increase was observed by mixing the urea with the soil.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 10

Associationobservedoriginal resultmeasured

Claim · model-written summary

Bean yield responses to nitrogen followed quadratic equations.

Taxon
common beansPhaseolus vulgarise0
Material
cv. IPA-1e0
Treatment
nitrogene1
Outcome
yield responsese1

Not reportedDirection

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e1

“Bean yield responses to nitrogen followed quadratic equations”

✓ located verbatim in the source · abstract, characters 595–656 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

On the Red-Yellow Latosol, the yield response to nitrogen increased up to 66 kg N/ha.

Taxon
common beansPhaseolus vulgarise0
Treatment
nitrogene2
Outcome
response to nitrogene2
Direction
increaseinferrede2
Value
66 kg N/hae2
Setting
Red-Yellow Latosole2

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e2

“In the Red-Yellow Latosol response to nitrogen occurred up to the rate of 66 kg N/ha”

✓ located verbatim in the source · abstract, characters 658–742 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

On the Solodic Planosol, yield increased up to the highest applied rate of 90 kg N/ha.

Taxon
common beansPhaseolus vulgarise0
Treatment
90 kg N/hae3
Outcome
yielde3
Direction
increasede3
Setting
Solodic Planosole3

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e3

“while in the Solodic Planosol the yield increased up to the highest applied rate of 90 kg N/ha”

✓ located verbatim in the source · abstract, characters 744–838 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The relative yield increase on the Red-Yellow Latosol site was 22%.

Taxon
common beansPhaseolus vulgarise0
Outcome
relative yield increasee4
Direction
increasee4
Value
22%e4
Setting
Red-Yellow Latosole2

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e2

“In the Red-Yellow Latosol response to nitrogen occurred up to the rate of 66 kg N/ha”

✓ located verbatim in the source · abstract, characters 658–742 · show in text ↑
e4

“The relative yield increase for each site was 22% and 16%, respectively”

✓ located verbatim in the source · abstract, characters 840–911 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The relative yield increase on the Solodic Planosol site was 16%.

Taxon
common beansPhaseolus vulgarise0
Outcome
relative yield increasee4
Direction
increasee4
Value
16%e4
Setting
Solodic Planosole3

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e3

“while in the Solodic Planosol the yield increased up to the highest applied rate of 90 kg N/ha”

✓ located verbatim in the source · abstract, characters 744–838 · show in text ↑
e4

“The relative yield increase for each site was 22% and 16%, respectively”

✓ located verbatim in the source · abstract, characters 840–911 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Sidedressed application of the total amount of urea gave the lowest bean yields compared with split application and furrow fertilization.

Taxon
common beansPhaseolus vulgarise0
Treatment
Sidedressed application of the total amount of ureae5
Outcome
yieldse5
Direction
loweste5
Comparator
split application and furrow fertilizatione5

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e5

“Sidedressed application of the total amount of urea resulted in the lowest yields, whereas split application and furrow fertilization were the best and equally effective methods”

✓ located verbatim in the source · abstract, characters 913–1090 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Split application of urea was among the best methods for bean yield compared with total sidedressing.

Taxon
common beansPhaseolus vulgarise0
Treatment
split applicatione5
Outcome
yieldse5
Direction
beste5
Comparator
Sidedressed application of the total amount of ureae5

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e5

“Sidedressed application of the total amount of urea resulted in the lowest yields, whereas split application and furrow fertilization were the best and equally effective methods”

✓ located verbatim in the source · abstract, characters 913–1090 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Furrow fertilization was among the best methods for bean yield compared with total sidedressing.

Taxon
common beansPhaseolus vulgarise0
Treatment
furrow fertilizatione5
Outcome
yieldse5
Direction
beste5
Comparator
Sidedressed application of the total amount of ureae5

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e5

“Sidedressed application of the total amount of urea resulted in the lowest yields, whereas split application and furrow fertilization were the best and equally effective methods”

✓ located verbatim in the source · abstract, characters 913–1090 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Split application and furrow fertilization were equally effective for bean yield.

Taxon
common beansPhaseolus vulgarise0
Treatment
split applicatione5
Outcome
equally effectivee5
Direction
no_changeinferrede5
Comparator
furrow fertilizatione5

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e5

“Sidedressed application of the total amount of urea resulted in the lowest yields, whereas split application and furrow fertilization were the best and equally effective methods”

✓ located verbatim in the source · abstract, characters 913–1090 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Mixing urea with the soil gave no significant bean yield increase.

Taxon
common beansPhaseolus vulgarise0
Treatment
mixing the urea with the soile6
Outcome
yielde6
Direction
increasee6

Not reportedComparator

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

Phaseolus vulgaris
Phaseolus vulgaris · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The effect of rate and method of urea application on the yield of common beans (Phaseolus vulgaris L., cv. IPA-1)”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e6

“No significant yield increase was observed by mixing the urea with the soil”

✓ located verbatim in the source · abstract, characters 1092–1167 · show in text ↑

irrigation · yield · Phaseolus vulgaris (common bean)Positive and negative results

122 papers: 87 positive, 35 negative or no effect

86 papers in the same direction as this paper · 32 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

118 papers more in this group

See all 122 papers →

nitrogen · yield · Phaseolus vulgaris (common bean)Positive and negative results

156 papers: 131 positive, 25 negative or no effect

24 papers in the same direction as this paper · 131 in the opposite direction

  1. no effect
  2. positive
  3. positive

152 papers more in this group

See all 156 papers →

fertilization · yield · Phaseolus vulgaris (common bean)Positive and negative results

376 papers: 331 positive, 45 negative or no effect

330 papers in the same direction as this paper · 42 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

372 papers more in this group

See all 376 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.