inoculation · Yield · Vigna unguiculata (cowpea)

Effect of soil pH on plant growth and nodulation of cowpea · 1980

• positive
  Inoculated cowpea plants produced more seeds.

Yield Component Analysis in Five Cowpea Cultivars · 1985

• positive
  Rhizobial inoculation significantly increased cowpea seed yield over the unfertilized, uninoculated control.

  compared with unfertilized, uninoculated control treatment

• positive
  Inoculation increased harvest index in indeterminate cowpea cultivars.

cited by 1 paper here

Comparison of Inoculant and Indigenous Rhizobial Dinitrogen Fixation in Cowpeas by Direct Nitrogen‐15 Analyses · 1986

• positive
  Strains P132, 401, and 22A1 gave greater seed yield than other strains and uninoculated controls.

  compared with other strains and the uninoculated control

• no effect
  Inoculum density had no effect on cowpea yield response.

Response of cowpea (Vigna unguiculata) to inoculation with co-selected vesicular–arbuscular mycorrhizal fungi and Rhizobium strains in field trials · 1992

• positive
  Dual inoculation increased cowpea pod yield relative to single inoculations.

  compared with single inoculations of either VAM fungus or Rhizobium

Effect of Rhizobium inoculation, nitrogen and phosphorus on growth and seedyield of cowpea (Vigna sinensis Savi) · 1996

• positive
  A starter dose of 20 kg N/ha with Rhizobium inoculation significantly increased cowpea growth, yield and yield parameters.

Effect of Bradyrhizobium sp. Inoculation on Biomass and Nodulation of Cowpea · 1997

• positive
  Inoculation increased cowpea crop yield.

Productivity and profitability of legumes as influenced by integrated nutrient management with fruit crops under hot arid ecology · 2001

• positive
  The same treatment gave cowpea a benefit: cost ratio of 2.15.
• positive
  The combined fertilizer, zinc and biofertiliser treatment gave the highest cowpea net returns.

Response of vegetable cowpea to P, K and Rhizobium inoculation under Andaman condition · 2001

• positive
  The 80 kg P2O5, 120 kg K2O and 20 kg N/ha plus Rhizobium treatment gave the maximum green pod yield of 114.09 q/ha.
• positive
  The 80 kg P, 60 kg K and 20 kg N/ha plus Rhizobium treatment maximized pods per plant.

Integrated phosphorus management in maize (Zea mays)-sunflower (Helianthus annuus)-cowpea (Vigna unguiculata) fodder cropping system · 2001

• positive
  Single superphosphate with microbial inoculants and 75% recommended P2O5 increased growth and yield of cowpea fodder.

Departrnerzt of Agrorzorny, Tnrnil Nadu Agricultural University, Coirnbatore 641 003 · 2001

• positive
  Single superphosphate with microbial inoculants increased cowpea fodder growth and yield.

Effect of nitrogen, phosphorus and seed inoculation on cowpea (Vigna unguiculata) · 2001

• positive
  Combined nitrogen and seed inoculation significantly increased cowpea seed yield over either alone.

  compared with their individual application

• positive
  Rhizobium seed inoculation significantly improved cowpea seed yield over control.

  compared with control

The use of Arbuscular Mycorrhiza (AM) as a source of yield increase in sustainable alley cropping system · 2005

• positive
  Arbuscular Mycorrhiza inoculation significantly increased cowpea yield over no inoculation.

  compared with uninoculated treatment

Effect of Rhizobium inoculation and various sources of nitrogen on growth and yield of cowpea [Vigna unguiculata (L.) Walp.] · 2005

• positive
  Nitrogen sources plus seed inoculation significantly increased plant height and dry matter accumulation over control.

  compared with control

• positive
  Nitrogen sources plus inoculation significantly increased branches, seeds per pod, pods per plant, and yield per plant over control.

  compared with control

• positive
  Nitrogen sources plus inoculation significantly increased seed, stover, and total biomass yields per hectare over control.

  compared with control

cited by 1 paper here

Phosphate rock biofertiliser with Acidithiobacillus and rhizobia improves nodulation and yield of cowpea (Vigna unguiculata) in greenhouse and field conditions · 2006

• positive
  TSP and biofertiliser increased cowpea dry matter yield.
• positive
  TSP and biofertiliser increased cowpea grain yield.

Contribution of Arbuscular Mycorrhizal Fungi (AMF), Rhizobia and Metarhizium anisopliae to Cowpea Production in Cameroon · 2007

• positive
  Inoculated and sprayed cowpea had significantly enhanced pod dry weight at harvest versus controls.

  compared with the control

• positive
  Inoculated and sprayed cowpea produced significantly more pods per plant than controls.

  compared with the control

cited by 2 papers here

Integrated effect of biofertilizers with recycled sago waste and pressmud on the yield of soybean and cowpea · 2010

• positive
  Composted agrowastes alone and with biofertilizers increased cowpea yield.

Eficiência agronômica de estirpes de rizóbio inoculadas em feijão-caupi no Cerrado, Gurupi-TO · 2010

• positive
  Mean grain yield of cowpea was 826 kg ha-1 with strain BR 3302 inoculation, versus the nitrogen-fertilized treatments.

  compared with treatments with nitrogen

• positive
  Inoculation with strain BR 3302 raised productivity of cultivar Vinagre by 11% over the nitrogen-fertilized treatment.

  compared with treatment fertilized with nitrogen

• positive
  Inoculation with strain BR 3302 raised productivity of cultivar Pujante by about 22 percent over the nitrogen-fertilized treatment.

  compared with treatment fertilized with nitrogen

Effect of Bio Fertilizer and Fertility Levels on Yield, Protein Content and Nutrient Uptake of Cowpea [ Vigna unguiculata (L.) Walp.] · 2011

• positive
  Rhizobium inoculation produced the highest stover yield of 1716 kg/ha.

  compared with rest of the treatments

• positive
  Rhizobium inoculation produced the highest grain yield of 1441 kg/ha.

  compared with rest of the treatments

cited by 2 papers here

Leaf Photosynthetic Metabolism and N2 Fixation at the Flowering Stage in Three Genotypes of Cowpea [Vigna unguiculata (L.) Walp.] · 2011

• positive
  Inoculated plants had more pods per plant than controls.

  compared with controls

Effect of arbuscular mycorrhizal inoculation on nutrient uptake, growth and productivity of cowpea (Vigna unguiculata) varieties · 2011

• positive
  AM fungal inoculation significantly affected cowpea productivity, attributed to growth, height, nodules, mycorrhizal dependency, and flowers per plant.
• positive
  AM inoculated cowpea outperformed uninoculated plants in growth, productivity, and nutrient uptake.

  compared with non-inoculated plants (control)

cited by 2 papers here

Effect of inorganic and bio-fertilizers on productivity and nutrients uptake in cowpea [Vigna Unguiculata (L.) Walp] · 2012

• positive
  Combined fertilizer and Rhizobium plus PSB increased seed yield to 8.85qha-1.

  compared with the control

• positive
  Combined fertilizer and Rhizobium plus PSB increased pods per plant to 8.23.

  compared with the control

• positive
  Rhizobium plus PSB seed inoculation increased pods per plant to 8.52.

  compared with rest of the treatments

• positive
  Rhizobium plus PSB seed inoculation increased seeds per pod to 8.11.

  compared with rest of the treatments

• positive
  Rhizobium plus PSB seed inoculation increased seed yield to 9.20q ha-1.

  compared with rest of the treatments

• positive
  Rhizobium plus PSB seed inoculation increased straw yield to 20.12q ha-1.

  compared with rest of the treatments

• positive
  Combined fertilizer and Rhizobium plus PSB increased seeds per pod to 7.83.

  compared with the control

• positive
  Combined fertilizer and Rhizobium plus PSB increased straw yield to 19.20q ha-1.

  compared with the control

Soil Amendment on Growth, Nodulation, Yield, Soil Health, and Economics of Cowpea · 2012

• positive
  Organic amendments and beneficial bacteria could improve yield and profitability of cowpea compared with the recommended N-P-K control.

  compared with control (recommended rate of N–P–K fertilizer)

Effect of N, K and biofertilizers on yield and quality of cowpea (Vigna unguiculata L.) in konkan region · 2012

• positive
  NPK at 30:50:30 kg per hectare plus inoculation produced higher seed yield, growth, and yield components.

Effect of different nitrogen sources and phosphate solubilizing bacteria on growth and yield of grain cowpea (Vigna unguiculata (L.) Walp.) · 2012

• positive
  Rhizobium plus PSB with 20 kg N/ha through vermicompost consequently increased grain and haulm yield of grain cowpea.
• positive
  Dual inoculation of Rhizobium plus PSB with 20 kg N/ha through vermicompost gave a higher B:C ratio for grain cowpea.
• positive
  Rhizobium plus PSB with 20 kg N/ha through vermicompost increased pods per plant, grains per pod and seed index of grain cowpea.
• positive
  Dual inoculation of Rhizobium plus PSB with 20 kg N/ha through vermicompost increased harvest index and net returns of grain cowpea.

PRODUCTIVITY IMPROVEMENT OF COWPEA UNDER DESERT SOIL CONDITIONS · 2012

• positive
  The combined treatment gave highest yield and components.
• positive
  Combined seed and soil inoculation surpassed other methods for yield and components.

  compared with other methods

Biological Nitrogen Fixation in Production of Vigna unguiculata (L.) Walp, Family Farming in Piauí, Brazil · 2013

• positive
  BR 3262, BR 3267 and UFLA 3-154 inoculation increased cowpea productivity in Itaueira.
• positive
  INPA 3-11B and BR 3267 inoculation was more efficient for cowpea shoot dry biomass.

cited by 5 papers here

EFFECT OF MICROBIAL INOCULATION ON REDUCTION OF COWPEA (Vigna unguiculata, L. Walp) CHEMICAL FERTILIZERS UNDER NEWLY RECLAIMED SOILS CONDITION IN EGYPT · 2013

• positive
  Mixed microbial inoculation enhanced cowpea dry seed yield and pod characters.
• positive
  75 % recommended fertilisation plus mixed inoculation produced the strongest dry seed yield and pod responses.
• positive
  Individual Bacillus megaterium and Pseudomonas fluorescens inoculations were most effective for yield, pod characters, leaf phosphorus and potassium relative to control.

  compared with control untreated plants

cited by 1 paper here

Effects of Phosphorus and Bradyrhizobium japonicum on Growth and Chlorophyll Content of Cowpea (Vigna unguiculata (L) Walp) · 2014

• positive
  B. japonicum inoculation significantly increased height, leaf number and stem girth.

  compared with control

cited by 2 papers here

Superior symbiotic performance ofnative bradyrhizobia isolates over foreign inoculants with cowpea cultivars in India · 2014

• positive
  Native B. yuanmingense produced higher seed yield than foreign B. japonicum.

  compared with foreign B. japonicum inoculated plants

• positive
  Native B. yuanmingense produced more plant dry matter than foreign B. japonicum.

  compared with foreign B. japonicum inoculated plants

Effect of vermicompost and biofertilizer on symbiotic efficiency and yield of cowpea in arid zone of Rajasthan · 2015

• positive
  Rhizobium plus PSB inoculation increased seed, straw and biological yield relative to control and other treatments.

  compared with control and other treatments

• positive
  Rhizobium plus PSB inoculation increased net returns.

  compared with control and other treatments

cited by 1 paper here

Productivity of cowpea as affected by salt stress in presence of endomycorrhizae and Pseudomonas fluorescens · 2015

• positive
  Tap water plus both inoculants gave the highest pod length, 13 cm.
• positive
  Tap water plus both inoculants gave the highest seeds per pod, 9 seed/pod.
• positive
  At 6000 ppm NaCl, P. fluorescence inoculation gave the highest 100-seed weight, 19.71 g.

cited by 1 paper here

Effect of vermicompost and biofertilizer on yield, quality and economics of cowpea · 2015

• positive
  Rhizobium plus PSB inoculation increased cowpea seed, straw and biological yields over control and other treatments.

  compared with control and other treatments

Effect of fertility levels and biofertilizers on growth and yield of cowpea on sandy loam soil of Rajasthan · 2015

• positive
  Rhizobium and PSB inoculation significantly increased number of pods per plant, number of seeds per pod.
• positive
  Rhizobium and PSB inoculation significantly increased height, branch number and straw yield over other treatments.

  compared with rest of treatments

• positive
  Rhizobium and PSB inoculation significantly increased seed and biological yield.

cited by 1 paper here

Rhizobium tropici exopolysaccharides as carriers improve the symbiosis of cowpea-Bradyrhizobium-Paenibacillus · 2015

• positive
  Simultaneous co-inoculation with Bradyrhizobium sp., P. graminis and P. durus stood out from all treatments in cowpea development and productivity.

  compared with all treatments

Effects of Phosphorus and Rhizobium Inoculation on Yield Components and Grain Yield of Some Selected Cowpea Genotypes · 2016

• positive
  Rhizobium MC92 inoculation had a significant effect on the measured cowpea characters and grain yield

Efficacy of Biochar from Tender Coconut Husk on Yield of Yard Long Bean in Ferralitic Soils · 2016

• positive
  Biochar at 20 t/ha with 2% PGPR and NPK gave better B:C ratio and pod yield.
• positive
  Biochar at 20 t/ha with 2% PGPR and NPK gave better total dry matter, pod protein and harvest index.

COWPEA (VIGNA UNGUICULATA) CROPS IN AFRICA CAN RESPOND TO INOCULATION WITH RHIZOBIUM · 2016

• positive
  In Mozambique, inoculation with one of the Brazilian rhizobium strains more than doubled cowpea grain yield, which reached 1.4 Mg/ha despite witchweed damage.
• positive
  In the second experiment, inoculation increased cowpea grain yield significantly by 39% to 57%, reaching over 2.0 Mg/ha.

cited by 5 papers here

Efficiency of the inoculation of Trichoderma asperellum UFT-201 in cowpea production components under growth conditions in field · 2016

• positive
  Seed inoculation with Trichoderma asperellum UFT 201 raised cowpea yield by 9.5% compared with control in both harvests.

  compared with control

Influence of Arbuscular mycorrhiza fungi (AMF) on drought tolerance and charcoal rot disease of cowpea · 2017

• positive
  G. deserticola inoculation produced high yield in water-stressed cowpea.

Symbiotic and agronomic efficiency of new cowpea rhizobia from Brazilian Semi-Arid · 2017

• positive
  ESA 18 increased production of BRS Pujante relative to the absolute control in the field.

  compared with absolute control

cites 2 papers herecited by 1 paper here

Growth and Yield Responses of Cowpea to Inoculation and Phosphorus Fertilization in Different Environments · 2017

• positive
  Inoculation alone consistently increased cowpea grain yield across locations.
• positive
  Combined inoculant and phosphorus increased cowpea grain yield to 1674 kg ha-1, versus 1097 kg ha-1 for control.

  compared with non-inoculated control

cites 2 papers herecited by 11 papers here

Influence of Bradyrhizobia inoculation on growth, nodulation and yield performance of cowpea varieties · 2017

• positive
  Bradyrhizobium inoculation significantly increased yield and yield components.

  compared with control

cites 1 paper herecited by 1 paper here

Improved grain yield of cowpea (Vigna unguiculata) under water deficit after inoculation with Bradyrhizobium elkanii and Rhizophagus irregularis · 2017

• positive
  B. elkanii inoculation increased cowpea grain yield by 45% under severe water deficit.
• positive
  B. elkanii inoculation increased cowpea grain yield by 63% under moderate water deficit.

cited by 3 papers here

Effect of soil salinity, phosphorus and biofertilizers on physical properties of soil, yield attributes and yield of cowpea [Vigna unguiculata (L.) Wilczek] · 2017

• positive
  Dual PSB and VAM inoculation gave maximum significantly higher yield components and root mass.

  compared with rest of the treatments

Effect of Organic Manures, Organic Supplements and Biofertilizers on Growth and Yield of Cowpea [Vigna unguiculata (L.) Walp] · 2017

• positive
  T14 (Vermicompost + Fish Amino Acid + Panchagavya + Biofertilizers) was best for number of branches (28.93) in cowpea compared with T13.

  compared with T13 (Vermicompost + Panchagavya + Biofertilizers)

• positive
  T14 (Vermicompost + Fish Amino Acid + Panchagavya + Biofertilizers) was best for pod yield (254.03 q/ha) in cowpea compared with T13.

  compared with T13 (Vermicompost + Panchagavya + Biofertilizers)

• positive
  T14 (Vermicompost + Fish Amino Acid + Panchagavya + Biofertilizers) was best for pod weight (17.63) in cowpea compared with T13.

  compared with T13 (Vermicompost + Panchagavya + Biofertilizers)

• positive
  T14 (Vermicompost + Fish Amino Acid + Panchagavya + Biofertilizers) was best for number of pods per plant (37.70) in cowpea compared with T13.

  compared with T13 (Vermicompost + Panchagavya + Biofertilizers)

• positive
  T14 (Vermicompost + Fish Amino Acid + Panchagavya + Biofertilizers) was best for number of seeds per pod (14.10) in cowpea compared with T13.

  compared with T13 (Vermicompost + Panchagavya + Biofertilizers)

Effects of Rhizobium, PSB Inoculation and Phosphorus Management on Soil Nutrient Status and Performance of Cowpea in Acid Soil of Arunachal Pradesh, India · 2017

• positive
  Dual inoculation with P2O5 fertilizer gave 34 % better pod yield than dual inoculation without phosphatic fertilizer.

  compared with duel inoculation without phosphatic fertilizer

• positive
  Dual inoculation with P2O5 fertilizer significantly increased yield attributes and green pod yield of cowpea.

Assessment of effect of zero tilled cowpea (Vigna unguiculata L.) grown with various inputs on growth, yield and economics · 2017

• positive
  T8 had the highest benefit-cost ratio, followed by weed control alone.

  compared with weed control (T2)

Effect of rates and sources of soluble phosphorus on the behavior of cowpea plants inoculated with rhizobacteria from soils of the north region of Brazil · 2017

• positive
  Bradyrhizobium inoculation increased cowpea dry matter production.

cited by 1 paper here

Application of biofertilization and biological control for cowpea production · 2017

• positive
  NPK microbial inoculants combined with mineral fertilizers gave the highest total yield.

cites 2 papers here

Integrated nutrient management in intercropping system of Cenchrus and cowpea under semi-arid condition of Rajasthan · 2018

• positive
  Maximum economic return of Cenchrus and cowpea was obtained with 40 kg N + 60 kg P2O5 + bacterial inoculation, at Rs99695/ha.
• positive
  Applying 40 kg N + 60 kg P2O5 + bacterial inoculation significantly increased economic return of Cenchrus and cowpea compared with other treatments.

  compared with other treatments

Integrated Nutrient Management in Summer Cowpea (Vigna unguiculata L.) Under South Gujarat Condition · 2018

• positive
  The higher nutrient and inoculation treatments significantly increased cowpea yield components and yields.

  compared with 50 % RDF (F1), FYM @ 0 t ha-1 (O1) and No inoculation (B1)

• positive
  The three higher nutrient and inoculation treatments significantly increased cowpea growth traits compared with their lower counterparts.

  compared with 50 % RDF (F1), FYM @ 0 t ha-1 (O1) and No inoculation (B1)

cites 3 papers here

Integrated Nutrient Management Practices to Enhance Yield and Quality of Cowpea (Vigna unguiculata L.) · 2018

• positive
  The combined 75 percent RDF, biofertilizer and vermicompost treatment gave higher seed yield of 1066 kg ha-1.
• positive
  The combined treatment gave higher straw yield of 2707 kg ha-1.

Response of Cowpea (Vigna unguiculata) to Inorganic and Biofertilizers · 2018

• positive
  Dual PSB and Rhizobium inoculation surpassed PSB alone for cowpea growth and yield.

  compared with alone PSB treatment

Efficiency of Biological Fertilization and Moringa Extract Application on Cowpea Productivity and Decreasing Mineral Fertilizers · 2018

• positive
  Combined inoculation, moringa seed treatment and spraying with reduced mineral fertilizer attained the highest cowpea seed yield, 1263.8 kg/fed.

The Effect of Using Chemical Nitrogen Fertilizer and Biological Fertilizer on Seed Yield and Protein Percent of Cowpea (Vigna unguiculata L.) · 2018

• positive
  At every nitrogen level, inoculation had the highest yield and no application the lowest.

  compared with non-application

• positive
  Nitroxin with 50 kg urea produced the highest seed yield, 2046 kg per hectare.

  compared with no fertilizer application biological fertilizer + no fertilizer urea

Delivery of Inoculum of Rhizophagus irregularis via Seed Coating in Combination with Pseudomonas libanensis for Cowpea Production · 2019

• positive
  P. libanensis enhanced plant biomass and seed yield.
• no effect
  Dual PGPB and AMF inoculation gave no benefit for growth or seed yield.

cites 2 papers herecited by 1 paper here

Growth and nutrition of cowpea (Vigna unguiculata) under water deficit as influenced by microbial inoculation via seed coating · 2019

• positive
  Inoculation with P. putida enhanced total biomass, seed weight and seed yield of cowpea.

cites 2 papers here

Influence of Nitrogen Sources and Bio-fertilizer on Soil Nutrients, Yield and Quality of Cowpea under Saline Soil Conditions · 2019

• positive
  Nitrogen at 71.4 kg N/ha with biofertilizer increased plant height, seed and pod weights, and seed yield relative to other treatments.

  compared with other treatments

Combined application of inoculant, phosphorus and organic manure improves grain yield of cowpea · 2019

• positive
  Adding Bradyrhizobium inoculant to P and fertisoil increased cowpea shoot biomass yield from 1677 to 1913 kg ha−1.

  compared with plots without Bradyrhizobium inoculation

cites 2 papers herecited by 1 paper here

Effect of Organic and Inorganic Nutrient Sources on Growth, Yield, Nutrient Uptake and Economics of Fodder Cowpea [Vigna unguiculata (L.) Walp.] · 2020

• positive
  T6 produced significantly higher green matter yield (334.5 q ha-1) in fodder cowpea or postharvest soil.

cited by 1 paper here

Technical and economic viability of cowpea co-inoculated with Azospirillum brasilense and Bradyrhizobium spp. and nitrogen doses · 2020

• positive
  Co-inoculation with A. brasilense increased cowpea grain yield.

  compared with without inoculation - control

cites 3 papers here

Inoculation of Rhizobium associated with Trichoderma asperellum on the development and yield of cowpea · 2020

• positive
  Seed inoculation with rhizobia and Trichoderma with a later Trichoderma application increased cowpea yield in three varieties under field conditions.

Integrated nutrient management and relationship studies in Cowpea (Vigna unguiculata L. Walp) under rainfed conditions · 2020

• positive
  The 75 per cent RDF with biofertilizers and vermicompost gave significantly higher pod yield per plant in cowpea, 7.7 g.

  compared with other treatments

• positive
  The 75 per cent RDF with biofertilizers and vermicompost gave significantly higher seed yield in cowpea, 1066 kg/ha.

  compared with other treatments

• positive
  The 75 per cent RDF with biofertilizers and vermicompost gave significantly higher straw yield in cowpea, 2707 kg/ha.

  compared with other treatments

• positive
  The 75 per cent RDF with biofertilizers and vermicompost gave significantly higher pods per plant in cowpea, 6.6.

  compared with other treatments

• positive
  The 75 per cent RDF with biofertilizers and vermicompost gave the maximum dry matter production of cowpea, 17.5 g per plant.

  compared with other treatments

cites 1 paper here

Interaction effect of Bacillus subtilis co-inoculation and mine water irrigation on cowpea's growth, physiology and nutritional quality · 2020

• positive
  With tap water and inoculation, Soronko and Nyira had the highest seed number and fresh weight.

  compared with Asetenapa and control

Phosphorus Fertilizer Rating and Rhizobia Inoculation for Improved Productivity of Cowpea in Northern Uganda · 2020

• positive
  Inoculation and phosphorus fertilizer increased yield of both cowpea varieties.
• positive
  Rhizobia inoculation increased Agondire grain yield by 26.4%.
• positive
  Rhizobia inoculation increased SECOW 2W grain yield by 28.4%.

Growth and Yield Responses of Cowpea and Groundnut to Five Rhizobial Inoculant Strains in the Guinea Savanna Zone of Ghana · 2020

• positive
  Rhizobial inoculation increased yield of cowpea and groundnut by 67% on average compared with the control.

  compared with control

cites 1 paper here

Potential of Native Rhizobia to Improve Cowpea Growth and Production in Semiarid Regions of Kenya · 2020

• positive
  Inoculation with native isolates increased yield by 22.7% over the uninoculated control in the first season.

  compared with uninoculated control

• positive
  Inoculation with native isolates increased yield by 28.6% over the uninoculated control in the second season.

  compared with uninoculated control

cites 2 papers herecited by 1 paper here

Combined Application of Inoculant, Phosphorus and Potassium Enhances Cowpea Yield in Savanna Soils · 2020

• positive
  The same inoculant and fertilizer treatment gave the highest grain yield on Ferric Luvisol, without differing from the BR-40-20 treatment.

  compared with BR-40-20 kg ha−1 P2O5 and K2O

• positive
  The inoculant with 30 kg P2O5 and 20 kg K2O gave the highest grain yield on Ferric Lixisol, 1.68 tons ha−1.

  compared with BR-40-30 kg ha−1 P2O5 and K2O ha−1

cites 4 papers herecited by 1 paper here

Effect of integrated nutrient management on yield and yield attributes of yardlong bean (Vigna unguiculata (L.) walp. ssp. sesquipedalis verdc.) · 2021

• positive
  The integrated nutrient treatment produced significantly higher pods per cluster.
• positive
  The integrated nutrient treatment produced significantly higher pod yield per plant.
• positive
  The integrated nutrient treatment produced significantly higher number of cluster per plant.
• positive
  The integrated nutrient treatment produced significantly higher seeds per pod.
• positive
  The integrated nutrient treatment produced significantly higher pod length.
• positive
  The integrated nutrient treatment produced significantly higher total yield.

Effect of integrated nutrient management on growth and yield of Yardlong bean (Vigna unguiculata (L.) Walp. Ssp. Sesquipedalis Verdc.) · 2021

• positive
  The same treatment gave 19.37 nodes per plant.
• positive
  Combined nutrient treatment gave significantly higher pod length of 62.08 cm.
• positive
  Combined nutrient treatment gave significantly higher 15.06 seeds per pod.
• positive
  Combined nutrient treatment gave significantly higher pod yield of 14.26t/ha.
• positive
  Combined inorganic, vermicompost and biofertilizer treatment gave significantly higher 48.30 clusters per plant.
• positive
  Combined nutrient treatment gave significantly higher 3.93 pods per cluster.

Yield response of field‐grown cowpea varieties to Bradyrhizobium inoculation · 2021

• positive
  CP‐24 inoculation increased cowpea seed yield by 21% relative to control.

  compared with the control

• positive
  CP‐24 inoculation increased cowpea 100-seed weight by 13% relative to control.

  compared with the control

• positive
  CP‐24 inoculation increased cowpea pod number by 16% relative to control.

  compared with the control

cites 3 papers here

Effect of biofertilizers and phosphorus on growth parameters and yield of Cowpea (Vigna unguiculata (L.) Walp.) in sandy loam soil of Prayagraj · 2021

• positive
  The treatment gave seed yield of 2.62 t/ha, a significant increase.
• positive
  The treatment gave 100-seed weight of 8.02 g, a significant increase.
• positive
  The treatment gave 4.87 branches, a significant increase.
• positive
  The treatment gave biological yield of 9.07 t/ha, a significant increase.

Bradyrhizobium japonicum AND PHOSPHORUS FERTILIZATION ON Vigna Unguilata (L.) WALP · 2021

• positive
  Phosphorus fertilization and inoculation raised second-period grain yield to a maximum of 145.94 kg ha−1.

Synergetic effects of seaweed extract and Rhizobium on cowpea · 2021

• positive
  Seaweed extract with or without Rhizobium increased cowpea pod number, length, and weight relative to control.

  compared with the control

• positive
  Seaweed extract with or without Rhizobium increased cowpea seed yield components relative to control.

  compared with the control

• positive
  Seaweed extract plus Rhizobium gave better growth, biochemical, and yield results than seaweed extract alone.

  compared with the seaweed extract alone

Effect of integrated nutrient management on yield and quality of yardlong bean (Vigna unguiculata (L.) Walp. Ssp. Sesquipedalis Verdc.) · 2021

• positive
  pods per cluster was significantly higher under the combined nutrient treatment, reaching 3.93.
• positive
  total yield was significantly higher under the combined nutrient treatment, reaching 14.26 t/ha.
• positive
  number of cluster per plant was significantly higher under the combined nutrient treatment, reaching 48.30.
• positive
  pod length was significantly higher under the combined nutrient treatment, reaching 62.08 cm.
• positive
  seeds per pod was significantly higher under the combined nutrient treatment, reaching 15.06.
• positive
  pod yield per plant was significantly higher under the combined nutrient treatment, reaching 263.70 g.

Integrated management of Striga gesnerioides in cowpea using resistant varieties, improved crop nutrition and rhizobium inoculants · 2022

• positive
  Yield response to inoculation was clearest for resistant genotypes receiving IRJ2180A.

cited by 1 paper here

Cowpea Genotypic Variations in N2 Fixation, Water Use Efficiency (δ13C), and Grain Yield in Response to Bradyrhizobium Inoculation in the Field, Measured Using Xylem N Solutes, 15N, and 13C Natural Abundance · 2022

• positive
  Inoculation increased grain yield up to fourfold at Savelugu and Gbalahi depending on combination and site.

cites 2 papers here

Weed Dynamics and Yield of Cowpea Inoculated in Mulching (Crushed Capoeira) · 2022

• positive
  Bradyrhizobium inoculation yielded 1965.09 kg ha-1, compared with 987.14 kg ha-1 without inoculation.

  compared with treatment without inoculation

Growth and yield response of cowpea (Vigna unguiculata L.) in sodic soil amended with marine gypsum, biochar and bioinoculants · 2022

• positive
  The combined T8 amendment significantly enhanced cowpea plant height, dry matter production, yield, and yield attributes.

cites 2 papers here

Co-Inoculation with Azospirillum brasilense and Bradyrhizobium sp. Enhances Nitrogen Uptake and Yield in Field-Grown Cowpea and Did Not Change N-Fertilizer Recovery · 2022

• positive
  Co-inoculation increased cowpea grain yield by an average of 8% relative to Bradyrhizobium alone.

  compared with standard inoculation with Bradyrhizobium sp.

cited by 2 papers here

Interaction of liming, mineral nitrogen fertilization, and Rhizobium inoculation in biomass partitioning and production of cowpea · 2023

• positive
  Liming and Rhizobium seed inoculation improved grain yield in both cowpea cultivars.
• positive
  Liming and Rhizobium seed inoculation increased cowpea plant performance.

Optimizing biomass yield of three herbaceous forage legumes through dual inoculation of Arbuscular Mycorrhizal Fungi and Rhizobia · 2023

• positive
  Dual inoculation produced more forage than uninoculated forage in both seasons.

  compared with un-inoculated forages

• positive
  Dual inoculation produced more forage than single inoculation in both seasons.

  compared with single inoculation

• positive
  Dual AMF and Rhizobia inoculation significantly increased forage dry matter yield.

  compared with single inoculation and un-inoculated forages

cites 1 paper here

THE EFFECT OF BIOLOGICAL AND NANOFERTILIZERS ON COWPEA ( VIGNA UNGUICULATA L.) YIELD, QUANTITATIVE AND QUALITATIVE TREAITS IN THE SOUTHERN IRANIAN CLIMATE · 2023

• positive
  Bio20 with iron nano chelate increased seed yield by 50% versus no fertilizer.

  compared with control (no fertilizer use)

Exploring the benefits of inoculated cowpeas under different climatic conditions in Namibia · 2023

• positive
  In dry years below 200 mm, average simulated inoculation yield advantage was only 0.1 t/ha.

  compared with non-inoculated cowpeas

• positive
  In cool wet conditions, simulated inoculation yield advantage exceeded 1 t/ha.

  compared with non-inoculated cowpeas

cites 2 papers herecited by 1 paper here

Economic Analysis of Seed Inoculation and Phosphorus Doses Application in Cowpea (Vigna unguiculata L.) · 2023

• positive
  Seed inoculation yielded the highest cowpea returns compared with no inoculation.

  compared with un-inoculated one

cites 1 paper here

Evaluation of Biofertilizers Prepared from Local Bacterial Isolates in the Growth and Yield of Cowpea in Gypsiferous Soil · 2023

• positive
  All inoculated treatments were significantly superior to the control in growth and yield traits of cowpea.

  compared with control treatment

• positive
  Enterobacter cloaca inoculum gave higher plant height, shoot dry weight and pod yield than Rhizobium sp., Bacillus cereus and Enterobacter ludwigii treatments.

  compared with Rhizobium sp, Bacillus cereus, Enterobacter ludwigii

• positive
  Brad. manausense biofertilizer gave an early pod yield of 3658 g per plant, significantly more than the control.

  compared with control treatment

Biofertilizer based on fish waste increases the yield of Vigna unguiculata L. Walp, Zea mays L., and the rhizospheric microbiota · 2023

• positive
  Fish-waste biofertilizer at 1, 1.25 and 1.5% increased height, root length and yield of cowpea.

Bio-priming Treatment with PGPB Strains in Cowpea Production Increases Grain Yield and Net Income · 2024

• positive
  PGPB consortia raised grain yield 42.4% above hydro-primed plants.

  compared with hydro-primed plants

cites 2 papers here

Effect of different nitrogen sources on yield and economics of fodder cowpea (Vigna unguiculata L.) · 2024

• positive
  Seed microbial consortia plus 100% RDF gave higher gross returns of Rs.1,10,458 ha-1, on par with soil application plus RDF.

  compared with 100% RDF + soil application of microbial consortia

• positive
  100% RDF with seed-applied microbial consortia produced significantly higher pod number, 34.3 per plant, and was statistically on par with soil-applied consortia plus RDF.

  compared with 100% RDF + soil application of microbial consortia

• positive
  Seed microbial consortia plus 100% RDF gave higher net returns of Rs. 65508 ha-1, on par with soil application plus RDF.

  compared with 100% RDF + soil application of microbial consortia

• positive
  100% RDF plus seed microbial consortia gave significantly higher stover yield, 3085 kg ha-1, and was on par with soil application plus RDF.

  compared with 100% RDF + soil application of microbial consortia

• positive
  100% RDF plus seed microbial consortia gave significantly higher seed yield, 797.9 kg ha-1, and was on par with soil application plus RDF.

  compared with 100% RDF + soil application of microbial consortia

Analyzing the Role of Different Molybdenum doses and Rhizobium Inoculation in Optimizing Nutrient Absorption and Yield in Vegetable Cowpea [Vigna unguiculata (L.) Walp.] cv. AVCP 1 · 2024

• positive
  Ammonium molybdate and Rhizobium significantly improved total cowpea yield.
• positive
  M2 plus R1 produced the highest yield.

Managing scarce water and land resources: The potentials of cowpea production in Namibia · 2025

• positive
  Inoculation enhanced cowpea productivity in northern Namibia, with maximum yield 5.73 tons per hectare.

cites 2 papers here

Biochar and Plant Growth-Promoting Bacteria Boost Chemical and Biological Properties of Semiarid Soil in Cowpea · 2025

• positive
  Biochars inoculated with Bradyrhizobium elkanii had the highest cowpea productivity.

Improvement of yield parameters of cowpea (Vigna unguiculata) by rhizobia sp. isolated from Mucuna pruriens and Centrosema pubescens at Ile-Ife, Nigeria · 2025

• positive
  Bradyrhizobium sp C7 significantly increased Ife brown yield to 73.92 g.
• positive
  Bradyrhizobium sp C7 significantly increased Ife BPC yield to 58.14 g.

cites 4 papers here

Field productivity of sorghum and cowpea intercropping is increased by combining farm-made beneficial microorganisms with compost · 2025

• positive
  Combining compost with FBM significantly improved crop yield.

EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGI ON PHOSPHORUS ABSORPTION AND YIELD OF COWPEA VARIETIES IN SOILS OF WUDIL AND WARAWA SUDAN SAVANNAH, NIGERIA · 2025

• positive
  AMF inoculation raised Sampea15 yield to 874.56kg versus 550.42kg control.

  compared with control

Enhancing Growth and Forage Quality of Cowpea through Plant Growth-Promoting Rhizobacteria Inoculations · 2025

• positive
  PGPR increased cowpea growth and yield parameters relative to control and NPK.

  compared with control group and NPK fertilizer application

Synergistic Effect of Organic Waste Products and Microbial Inocula on Iron and Zinc Biofortification in Cowpea [ Vigna unguiculata (L.) Walp.] · 2026

• positive
  Application of organic waste products with microbial inocula increased cowpea haulm yield by up to 3.2-fold compared with the control.

  compared with control

• positive
  Application of organic waste products with microbial inocula increased cowpea grain yield by up to 2.4-fold compared with the control.

  compared with control

Interactive effects of biochar and microbial biofertilizers on sandy soil fertility and cowpea yield in Egyptian agroecosystems · 2026

• positive
  Integrated biochar and microbial inoculants changed cowpea-system seed yield by + 33% relative to the control.

  compared with the control

Effects of PGPR and nitrogen fixing bacteria on growth physiological and metabolic response of cowpea · 2026

• positive
  Dual inoculation enhanced pod and seed numbers.

cites 2 papers here