Paper · 2018 · Agriculture & Food Security

Integrating inorganic NP application and Bradyrhizobium inoculation to minimize production cost of peanut (Arachis hypogea L.) in eastern Ethiopia

Anteneh Argaw

14
claims
24
verbatim quotes
11
citations
3
research areas
✓
Open access · cc-by

Abstract

Integrated application of inorganic NP and inoculation of Bradyrhizobium sp. exhibits various effect on nodulation and productivity of peanut in different locations. Therefore, this field experimental was set up in Fedis and Babile to investigate the effect of nitrogen, phosphorus and Bradyrhizobium inoculation on nodulation and yield of peanut. Fourteen treatments were laid out in randomized complete block with three replications. ANOVA revealed that the main effect of Bradyrhizobium inoculation, N and P and their two and three ways interaction had significant effect on most of the investigated traits of peanut. Applying 20 kg N ha−1 significantly enhanced the nodule number (NN) and nodule dry weight (NDW) at Fedis but reduction of nodulation was found at Babile site. Phosphorus application at 60 and 30 kg P2O5 ha−1 significantly increased the NDW by 88.4 and 34% over the P control at Babile and Fedis site, respectively. A significant increase in grain yield at 60 and 30 kg P2O5 ha−1 was also observed at Babile and Fedis, respectively. Although Bradyrhizobium increased the nodulation at Fedis site, this effect was not observed on yield of peanut. A significant increase in NN and NDW by inoculation was found with only when N was not applied either of the locations. However, inorganic N application increased plant N accumulation at Babile site. According to the results from the field experiments, the yield of peanut at Babile and Fedis can be enhanced by applying 60 and 30 kg P2O5 ha−1, respectively, with background rhizobia. Although P application increase the yield of peanut, the yield is still far below the potential yield of peanut reported elsewhere. Hence, further investigation of other yield limiting factors in the study sites is needed.

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Claims 14

Intervention effectobservedoriginal resultmixedsignificant (as stated)measured

Claim · model-written summary

Bradyrhizobium inoculation, N and P and their interactions significantly affected most investigated peanut traits.

Treatment
Bradyrhizobium inoculation, N and Pe0
Interactor
BradyrhizobiumBradyrhizobiume0symbiont
Outcome
most of the investigated traits of peanute0

Not reportedComparatorDirection

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗
Bradyrhizobium
Bradyrhizobium · Interactor · picture of the genus (one of its species)Louisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗

Verbatim

e0

“the main effect of Bradyrhizobium inoculation, N and P and their two and three ways interaction had significant effect on most of the investigated traits of peanut”

✓ located verbatim in the source · abstract, characters 456–619 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Applying 20 kg N ha−1 significantly increased nodule number and dry weight at Fedis.

Treatment
20 kg N ha−1e0
Outcome
nodule number (NN) and nodule dry weight (NDW)e0
Direction
enhancede0
Setting
Fedise0

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Applying 20 kg N ha−1 significantly enhanced the nodule number (NN) and nodule dry weight (NDW) at Fedis”

✓ located verbatim in the source · abstract, characters 621–725 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Applying 20 kg N ha−1 reduced peanut nodulation at Babile.

Treatment
20 kg N ha−1e1
Outcome
nodulatione0
Direction
reductione0
Setting
Babile sitee0

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“reduction of nodulation was found at Babile site”

✓ located verbatim in the source · abstract, characters 730–778 · show in text ↑
e1

“Applying 20 kg N ha−1 significantly enhanced the nodule number (NN) and nodule dry weight (NDW) at Fedis”

✓ located verbatim in the source · abstract, characters 621–725 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At Babile, 60 kg P2O5 ha−1 increased peanut nodule dry weight by 88.4% over the P control.

Treatment
Phosphorus applicatione0
Outcome
NDWe0
Direction
increasede0
Comparator
P controle0
Setting
Babilee0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Phosphorus application at 60 and 30 kg P2O5 ha−1 significantly increased the NDW by 88.4 and 34% over the P control at Babile and Fedis site, respectively”

✓ located verbatim in the source · abstract, characters 780–934 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At Fedis, 30 kg P2O5 ha−1 increased peanut nodule dry weight by 34% over the P control.

Treatment
30 kg P2O5 ha−1e0
Outcome
NDWe0
Direction
increasede0
Value
34%e0
Comparator
P controle0
Setting
Fedise0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Phosphorus application at 60 and 30 kg P2O5 ha−1 significantly increased the NDW by 88.4 and 34% over the P control at Babile and Fedis site, respectively”

✓ located verbatim in the source · abstract, characters 780–934 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At Babile, 60 kg P2O5 ha−1 significantly increased peanut grain yield.

Treatment
P2O5e0
Outcome
grain yielde0
Direction
increasee0
Setting
Babilee0

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“A significant increase in grain yield at 60 and 30 kg P2O5 ha−1 was also observed at Babile and Fedis, respectively”

✓ located verbatim in the source · abstract, characters 936–1051 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At Fedis, 30 kg P2O5 ha−1 significantly increased peanut grain yield.

Treatment
30 kg P2O5 ha−1e0
Outcome
grain yielde0
Direction
increasee0
Setting
Fedise0

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“A significant increase in grain yield at 60 and 30 kg P2O5 ha−1 was also observed at Babile and Fedis, respectively”

✓ located verbatim in the source · abstract, characters 936–1051 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bradyrhizobium increased peanut nodulation at Fedis.

Treatment
Bradyrhizobiume0
Interactor
BradyrhizobiumBradyrhizobiume0symbiont
Outcome
nodulatione0
Direction
increasede0
Setting
Fedis sitee0

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗
Bradyrhizobium
Bradyrhizobium · Interactor · picture of the genus (one of its species)Louisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Bradyrhizobium increased the nodulation at Fedis site”

✓ located verbatim in the source · abstract, characters 1062–1115 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Bradyrhizobium did not increase peanut yield at Fedis despite increasing nodulation.

Treatment
Bradyrhizobiume0
Interactor
BradyrhizobiumBradyrhizobiume0symbiont
Outcome
yield of peanute0
Direction
not observede0
Setting
Fedis sitee0

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗
Bradyrhizobium
Bradyrhizobium · Interactor · picture of the genus (one of its species)Louisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Although Bradyrhizobium increased the nodulation at Fedis site, this effect was not observed on yield of peanut”

✓ located verbatim in the source · abstract, characters 1053–1164 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Inorganic N application increased peanut plant N accumulation at Babile.

Treatment
inorganic N applicatione0
Outcome
plant N accumulatione0
Direction
increasede0
Setting
Babile sitee0

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“inorganic N application increased plant N accumulation at Babile site”

✓ located verbatim in the source · abstract, characters 1295–1364 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend 60 kg P2O5 ha−1 with background rhizobia to improve peanut yield at Babile.

Treatment
P2O5e0
Outcome
yield of peanute0
Direction
enhancede0
Setting
Babilee0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“the yield of peanut at Babile and Fedis can be enhanced by applying 60 and 30 kg P2O5 ha−1, respectively, with background rhizobia”

✓ located verbatim in the source · abstract, characters 1419–1549 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend 30 kg P2O5 ha−1 with background rhizobia to improve peanut yield at Fedis.

Treatment
30 kg P2O5 ha−1e0
Outcome
yield of peanute0
Direction
enhancede0
Setting
Fedise0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“the yield of peanut at Babile and Fedis can be enhanced by applying 60 and 30 kg P2O5 ha−1, respectively, with background rhizobia”

✓ located verbatim in the source · abstract, characters 1419–1549 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Peanut yield remained far below the potential yield reported elsewhere.

Outcome
yield of peanute0
Direction
far belowe0
Comparator
potential yield of peanut reported elsewheree0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“the yield is still far below the potential yield of peanut reported elsewhere”

✓ located verbatim in the source · abstract, characters 1604–1681 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors call for investigation of other yield limiting factors at the study sites.

Outcome
further investigation of other yield limiting factorse0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“further investigation of other yield limiting factors in the study sites is needed”

✓ located verbatim in the source · abstract, characters 1690–1772 · show in text ↑
t0

“peanut (Arachis hypogea L.)”

✓ located verbatim in the source · title, characters 99–126 · show in text ↑

Bradyrhizobium · yield · Arachis hypogaea (peanut)Results differ

14 papers: 12 positive, 2 negative or no effect

1 paper in the same direction as this paper · 12 in the opposite direction

  1. positive
  2. positive
  3. positive

10 papers more in this group

See all 14 papers →

Bradyrhizobium · symbiosis · Arachis hypogaea (peanut)Positive and negative results

13 papers: 12 positive, 1 negative or no effect

11 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

nitrogen · symbiosis · Arachis hypogaea (peanut)Results differ

29 papers: 17 positive, 12 negative or no effect

16 papers in the same direction as this paper · 12 in the opposite direction

  1. negative
  2. no effect
  3. negative

25 papers more in this group

See all 29 papers →

phosphorus · yield · Arachis hypogaea (peanut)Results differ

178 papers: 160 positive, 18 negative or no effect

159 papers in the same direction as this paper · 17 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

174 papers more in this group

See all 178 papers →

nitrogen · nutrient: content · Arachis hypogaea (peanut)Positive and negative results

24 papers: 22 positive, 2 negative or no effect

21 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. negative
  3. positive

20 papers more in this group

See all 24 papers →

phosphorus · symbiosis · Arachis hypogaea (peanut)Positive and negative results

28 papers: 27 positive, 1 negative or no effect

26 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

24 papers more in this group

See all 28 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.