Abstract
A field experiment was conducted during Kharif season of 2013 to know the effect of fertility levels and biofertilizers on growth and yield of cowpea on sandy loam soil of Rajasthan. The experiment consisted of four treatments of fertility levels (control, 100 % RDF, 75 % RDF+VC @ 2 t/ha and 100 % RDF+VC @ 2 t/ha) and four levels of biofertilizers (control, Rhizobium, PSB and Rhizobium + PSB) thereby making sixteen treatment combinations tested in factorial Randomized Block Design with three replications. Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control. However, application the test weight and harvest index unchanged under different fertility levels. Results further indicated that inoculation of Rhizobium and PSB significantly increased the chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed and biological yield. However, inoculation of Rhizobium and PSB significantly increased the plant height, number of branches per plant and straw yield over the rest of treatments. However, the test weight and harvest index remained unchanged under different levels of biofertilizers.
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Claims 16
Claim · model-written summary
100 per cent RDF+VC @ 2 t/ha significantly increased plant height, number of branches per plant over control and was at par with 75 per cent RDF+VC @ 2 t/ha.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- 100 per cent RDF+VC @ 2 t/hae0
- Outcome
- plant height, number of branches per plante0
- Direction
- increasede0
- Qualifier
- remained at par with the application of 75 per cent RDF+VC @ 2 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control.”
t0“cowpea”
Claim · model-written summary
100 per cent RDF+VC @ 2 t/ha significantly increased chlorophyll content over control and was at par with 75 per cent RDF+VC @ 2 t/ha.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- 100 per cent RDF+VC @ 2 t/hae0
- Outcome
- chlorophyll contente0
- Direction
- increasede0
- Qualifier
- remained at par with the application of 75 per cent RDF+VC @ 2 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control.”
t0“cowpea”
Claim · model-written summary
100 per cent RDF+VC @ 2 t/ha significantly increased total root and effective root nodules over control and was at par with 75 per cent RDF+VC @ 2 t/ha.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- 100 per cent RDF+VC @ 2 t/hae0
- Outcome
- total root and effective root nodulese0
- Direction
- increasede0
- Qualifier
- remained at par with the application of 75 per cent RDF+VC @ 2 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control.”
t0“cowpea”
Claim · model-written summary
100 per cent RDF+VC @ 2 t/ha significantly increased fresh weight and dry weight of nodules over control and was at par with 75 per cent RDF+VC @ 2 t/ha.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- 100 per cent RDF+VC @ 2 t/hae0
- Outcome
- fresh weight and dry weight of nodulese0
- Direction
- increasede0
- Qualifier
- remained at par with the application of 75 per cent RDF+VC @ 2 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control.”
t0“cowpea”
Claim · model-written summary
100 per cent RDF+VC @ 2 t/ha significantly increased leghaemoglobin content over control and was at par with 75 per cent RDF+VC @ 2 t/ha.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- 100 per cent RDF+VC @ 2 t/hae0
- Outcome
- leghaemoglobin contente0
- Direction
- increasede0
- Qualifier
- remained at par with the application of 75 per cent RDF+VC @ 2 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control.”
t0“cowpea”
Claim · model-written summary
100 per cent RDF+VC @ 2 t/ha significantly increased number of pods per plant, number of seeds per pod over control and was at par with 75 per cent RDF+VC @ 2 t/ha.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- 100 per cent RDF+VC @ 2 t/hae0
- Outcome
- number of pods per plant, number of seeds per pode0
- Direction
- increasede0
- Qualifier
- remained at par with the application of 75 per cent RDF+VC @ 2 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control.”
t0“cowpea”
Claim · model-written summary
100 per cent RDF+VC @ 2 t/ha significantly increased seed, straw and biological yield over control and was at par with 75 per cent RDF+VC @ 2 t/ha.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- 100 per cent RDF+VC @ 2 t/hae0
- Outcome
- seed, straw and biological yielde0
- Direction
- increasede0
- Qualifier
- remained at par with the application of 75 per cent RDF+VC @ 2 t/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results indicated that application of 100 per cent RDF+VC @ 2 t/ha significantly increased the plant height, number of branches per plant, chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed, straw and biological yield and remained at par with the application of 75 per cent RDF+VC @ 2 t/ha over control.”
t0“cowpea”
Claim · model-written summary
Test weight and harvest index were unchanged across fertility levels.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- different fertility levelse0
- Outcome
- test weight and harvest indexe0
- Direction
- unchangede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“However, application the test weight and harvest index unchanged under different fertility levels.”
t0“cowpea”
Claim · model-written summary
Rhizobium and PSB inoculation significantly increased chlorophyll content.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation of Rhizobium and PSBe0
- Second interactor
- PSBe0symbiont
- Outcome
- chlorophyll contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results further indicated that inoculation of Rhizobium and PSB significantly increased the chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed and biological yield.”
t0“cowpea”
Claim · model-written summary
Rhizobium and PSB inoculation significantly increased total root and effective root nodules.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation of Rhizobium and PSBe0
- Second interactor
- PSBe0symbiont
- Outcome
- total root and effective root nodulese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results further indicated that inoculation of Rhizobium and PSB significantly increased the chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed and biological yield.”
t0“cowpea”
Claim · model-written summary
Rhizobium and PSB inoculation significantly increased fresh weight and dry weight of nodules.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation of Rhizobium and PSBe0
- Second interactor
- PSBe0symbiont
- Outcome
- fresh weight and dry weight of nodulese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results further indicated that inoculation of Rhizobium and PSB significantly increased the chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed and biological yield.”
t0“cowpea”
Claim · model-written summary
Rhizobium and PSB inoculation significantly increased leghaemoglobin content.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation of Rhizobium and PSBe0
- Second interactor
- PSBe0symbiont
- Outcome
- leghaemoglobin contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results further indicated that inoculation of Rhizobium and PSB significantly increased the chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed and biological yield.”
t0“cowpea”
Claim · model-written summary
Rhizobium and PSB inoculation significantly increased number of pods per plant, number of seeds per pod.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation of Rhizobium and PSBe0
- Second interactor
- PSBe0symbiont
- Outcome
- number of pods per plant, number of seeds per pode0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results further indicated that inoculation of Rhizobium and PSB significantly increased the chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed and biological yield.”
t0“cowpea”
Claim · model-written summary
Rhizobium and PSB inoculation significantly increased seed and biological yield.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation of Rhizobium and PSBe0
- Second interactor
- PSBe0symbiont
- Outcome
- seed and biological yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Results further indicated that inoculation of Rhizobium and PSB significantly increased the chlorophyll content, total root and effective root nodules, fresh weight and dry weight of nodules, leghaemoglobin content, number of pods per plant, number of seeds per pod, seed and biological yield.”
t0“cowpea”
Claim · model-written summary
Rhizobium and PSB inoculation significantly increased height, branch number and straw yield over other treatments.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation of Rhizobium and PSBe0
- Second interactor
- PSBe0symbiont
- Outcome
- plant height, number of branches per plant and straw yielde0
- Direction
- increasede0
- Comparator
- rest of treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“However, inoculation of Rhizobium and PSB significantly increased the plant height, number of branches per plant and straw yield over the rest of treatments.”
t0“cowpea”
Claim · model-written summary
Test weight and harvest index remained unchanged across biofertilizer levels.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- different levels of biofertilizerse0
- Outcome
- test weight and harvest indexe0
- Direction
- unchangede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“However, the test weight and harvest index remained unchanged under different levels of biofertilizers.”
t0“cowpea”
The same questions in other papers
Rhizobium · symbiosis · Vigna unguiculata (cowpea)Results differ
17 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
17 papers more in this group
See all 21 papers →Rhizobium · molecular: metabolites · Vigna unguiculata (cowpea)Results agree
1 paper in the same direction as this paper
- positive
Rhizobium · physiology: pigments · Vigna unguiculata (cowpea)Results agree
2 papers in the same direction as this paper
- positive
- positive
Rhizobium · yield · Vigna unguiculata (cowpea)Results agree
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- positive
- positive
- positive
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56 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
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See all 69 papers →inoculation · yield · Vigna unguiculata (cowpea)Results differ
98 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- positive
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- negative
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2 in the opposite direction
- positive
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inoculation · physiology: pigments · Vigna unguiculata (cowpea)Positive and negative results
7 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
5 papers more in this group
See all 9 papers →8 of 13 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.