Paper · 2025 · Asian Journal of Soil Science and Plant Nutrition

Optimisation of Nutrient Sources for Improving Growth, Yield, and Quality of Yardlong Bean (Vigna unguiculata subsp. sesuipedalis L.)

M. Ramanjineyulu; S. V. Vaishnavi; T. Basavaraj; et al.

16
claims
46
verbatim quotes
0
citations
1
research areas
✓
Open access

Abstract

In India, vegetable production is not sufficient to meet the requirements of the growing population, and the extent of cultivated land is also limited. Therefore, the potential of vegetable production must be fully exploited through the intensification of improved agronomic practices. Among the different vegetables cultivated in India, vegetable cowpea or yard long bean (Vigna unguiculata subsp. sesquipedalis L.) holds an important place due to its high nutritional value and wide consumer preference, making yield and quality significant factors. The paper aims to optimise nutrient sources for improving growth, yield, and quality of yardlong bean. A field experiment was conducted during June 2024 at the Olericulture Block of Sri Krishnadevaraya College of Horticultural Sciences, Ananthapuramu, to evaluate the effects of organic manures, inorganic fertilizers, biochar and bioinoculants on the growth and yield of yard long bean (Vigna unguiculata subsp. Sesquipedalis L.) under semi-arid conditions. The trial was laid out in a randomised block design (RBD) with 18 treatments replicated thrice. The treatments included control, rhizobium inoculation, different levels of NPK, farmyard manure (FYM), vermicompost, biochar and their various combinations. Significant variation was observed among treatments for vegetative, reproductive and yield traits. The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant. It also produced the longest pods (54.76 cm), greatest pod girth (3.28 cm), maximum pod weight (15.32 g), highest number of seeds per pod (12.82) and the maximum yield (3812.37 kg ha-1). In contrast, the control (T₁) consistently recorded the lowest values across parameters. The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions. From the present study, it can be concluded that the application of organic manures or inorganic fertilizers alone did not produce significant improvements in the growth and yield parameters of yard long bean. Treatments involving organic fertilizers showed better performance than the control, while increasing fertilizer dosage further enhanced growth and yield attributes.

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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 16

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 (35:70:35 NPK kg/ha + 4 t/ha biochar) gave the maximum vine length in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
vine lengthe1
Direction
maximume1
Value
532.87 cme1
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the maximum leaf area index in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
leaf area indexe1
Direction
maximume1
Value
3.42e1
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the maximum dry matter production in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
dry matter productione1
Direction
maximume1
Value
2632.17 g plant-1e1
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the minimum days to flowering in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
days to floweringe1
Direction
minimume1
Value
32.96 dayse1
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the highest number of leaves per plant in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
number of leavese1
Direction
higheste1
Value
219.76e1
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the highest number of pods per plant in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
podse1
Direction
higheste1
Value
66.3e1
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the longest pods in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
longest podse4
Direction
longeste4
Value
54.76 cme4
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
e4

“It also produced the longest pods (54.76 cm), greatest pod girth (3.28 cm), maximum pod weight (15.32 g), highest number of seeds per pod (12.82) and the maximum yield (3812.37 kg ha-1)”

✓ located verbatim in the source · abstract, characters 1645–1830 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the greatest pod girth in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
pod girthe4
Direction
greateste4
Value
3.28 cme4
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
e4

“It also produced the longest pods (54.76 cm), greatest pod girth (3.28 cm), maximum pod weight (15.32 g), highest number of seeds per pod (12.82) and the maximum yield (3812.37 kg ha-1)”

✓ located verbatim in the source · abstract, characters 1645–1830 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the maximum pod weight in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
pod weighte4
Direction
maximume4
Value
15.32 ge4
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
e4

“It also produced the longest pods (54.76 cm), greatest pod girth (3.28 cm), maximum pod weight (15.32 g), highest number of seeds per pod (12.82) and the maximum yield (3812.37 kg ha-1)”

✓ located verbatim in the source · abstract, characters 1645–1830 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the highest number of seeds per pod in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
seeds per pode4
Direction
higheste4
Value
12.82e4
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
e4

“It also produced the longest pods (54.76 cm), greatest pod girth (3.28 cm), maximum pod weight (15.32 g), highest number of seeds per pod (12.82) and the maximum yield (3812.37 kg ha-1)”

✓ located verbatim in the source · abstract, characters 1645–1830 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment T18 gave the maximum yield in yard long bean.

Treatment
35:70:35 NPK kg ha-1 + 4 t ha-1 biochare1
Outcome
yielde4
Direction
maximume4
Value
3812.37 kg ha-1e4
Comparator
controle2
Setting
semi-arid conditionse3

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The treatment T₁₈ (35:70:35 NPK kg ha-1 + 4 t ha-1 biochar) recorded the maximum vine length (532.87 cm), leaf area index (3.42), dry matter production (2632.17 g plant-1), minimum days to flowering (32.96 days) and the highest number of leaves (219.76) and pods (66.3) per plant”

✓ located verbatim in the source · abstract, characters 1364–1643 · show in text ↑
e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
e4

“It also produced the longest pods (54.76 cm), greatest pod girth (3.28 cm), maximum pod weight (15.32 g), highest number of seeds per pod (12.82) and the maximum yield (3812.37 kg ha-1)”

✓ located verbatim in the source · abstract, characters 1645–1830 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The control recorded the lowest values across yard long bean parameters.

Outcome
values across parameterse2
Direction
loweste2
Comparator
controle2

Not reportedTreatment

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e2

“the control (T₁) consistently recorded the lowest values across parameters”

✓ located verbatim in the source · abstract, characters 1845–1919 · show in text ↑
e3

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Organic manures or inorganic fertilizers alone gave no significant improvement in yard long bean growth and yield parameters.

Treatment
the application of organic manures or inorganic fertilizers alonee1
Outcome
growth and yield parameterse1
Direction
no_changeinferrede1

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“the application of organic manures or inorganic fertilizers alone did not produce significant improvements in the growth and yield parameters of yard long bean”

✓ located verbatim in the source · abstract, characters 2189–2348 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatments with organic fertilizers performed better than the control in yard long bean.

Treatment
Treatments involving organic fertilizerse1
Outcome
performancee1
Direction
bettere1
Comparator
controle1

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“Treatments involving organic fertilizers showed better performance than the control, while increasing fertilizer dosage further enhanced growth and yield attributes”

✓ located verbatim in the source · abstract, characters 2350–2514 · show in text ↑
e2

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing fertilizer dosage further enhanced growth and yield attributes of yard long bean.

Treatment
increasing fertilizer dosagee1
Outcome
growth and yield attributese1
Direction
enhancede1

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“Treatments involving organic fertilizers showed better performance than the control, while increasing fertilizer dosage further enhanced growth and yield attributes”

✓ located verbatim in the source · abstract, characters 2350–2514 · show in text ↑
e2

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The integrated application of 35:70:35 NPK kg/ha with 4 t/ha biochar is highly effective for growth and yield performance of yard long bean under semi-arid conditions.

Treatment
integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochare1
Outcome
growth and yield performancee1
Direction
enhancinge1
Setting
semi-arid conditionse1

Not reportedComparator

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

Vigna unguiculata subsp. sesquipedalis
Vigna unguiculata subsp. sesquipedalis · TaxonDavid · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The findings clearly demonstrate that the integrated application of 35:70:35 NPK kg ha-1 with 4 t ha-1 biochar is highly effective in enhancing growth and yield performance of yard long bean under semi-arid conditions”

✓ located verbatim in the source · abstract, characters 1921–2138 · show in text ↑

biochar · growth · Vigna unguiculata (cowpea)Positive and negative results

15 papers: 13 positive, 2 negative or no effect

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

  1. no effect
  2. no effect
  3. positive

11 papers more in this group

See all 15 papers →

organic · yield · Vigna unguiculata (cowpea)Positive and negative results

20 papers: 19 positive, 1 negative or no effect

19 in the opposite direction

  1. positive
  2. positive
  3. positive

16 papers more in this group

See all 20 papers →

biochar · yield · Vigna unguiculata (cowpea)Positive and negative results

22 papers: 18 positive, 4 negative or no effect

17 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

18 papers more in this group

See all 22 papers →

fertilization · growth · Vigna unguiculata (cowpea)Positive and negative results

143 papers: 131 positive, 12 negative or no effect

130 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative

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

139 papers more in this group

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fertilization · yield · Vigna unguiculata (cowpea)Positive and negative results

292 papers: 275 positive, 17 negative or no effect

274 papers in the same direction as this paper · 15 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

288 papers more in this group

See all 292 papers →

biochar · phenology · Vigna unguiculata (cowpea)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

fertilization · phenology · Vigna unguiculata (cowpea)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 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.