Dual PSB and VAM inoculation gave maximum significantly higher nodulation except that nodule index was comparable to PSB.

inoculation · symbiosis · Vigna unguiculata (cowpea)Results differ

56 papers in the same direction as this claim · 11 in the opposite direction · 1 reporting no difference from an alternative

1. no effect
   Commercial rhizobial inoculation did not significantly affect cowpea nodulation, biomass yield, or shoot nitrogen content compared with controls.

   Potential of indigenous bradyrhizobia versus commercial inoculants to improve cowpea (Vigna unguiculataL. walp.) and green gram (Vigna radiataL. wilczek.) yields in Kenya · 2012 · compared with controls

   Opposite direction

2. no effect
   Mycorrhizal inoculation did not effectively improve cowpea nodulation.

   Abiotic and Biotic Limitations to Nodulation by Leguminous Cover Crops in South Texas · 2019

   Opposite direction

3. negative
   Cowpeas inoculated with the aluminum-sensitive strain had significantly fewer nodules in more acid, aluminum-rich soils.

   Nodulation of Cowpeas and Survival of Cowpea Rhizobia in Acid, Aluminum‐Rich Soils · 1983 · compared with the same soils with higher pH values and less extractable Al

   Opposite direction

4. no effect
   Bradyrhizobium inoculation had no effect on cowpea nodulation compared with non-inoculated plants.

   Effects of cowpea (Vigna unguiculata) inoculation on nodule development and rhizosphere carbon and nitrogen content under simulated drought · 2023 · compared with non-inoculated

   Opposite direction

5. negative
   R. reniformis infection preceding rhizobial inoculation hindered nodule formation on cowpea.

   Interrelations between Meloidogyne javanica, Rotylenchulus reniformis, and Rhizobium Sp. on Vigna sinensis. · 1980

   Opposite direction

6. no effect
   Rhizobium inoculation did not significantly affect nodule weight, pod number, pod weight, or seed yield.

   Performance of Cowpeas on an Inland Valley Swamp in the Dry Season in Sierra Leone · 1983

   Opposite direction

7. no effect
   Cowpea nodule and plant dry weights after a one to 24 hour inoculation lag were on par with uninoculated controls.

   INFLUENCE OF ADHESIVES AND TIME LAG BETWEEN SEED TREATMENT AND SOWING ON SURVIVAL OF RHIZOBIA AND CROP RESPONSE TO INOCULATION · 1996 · compared with uninoculated control

   Opposite direction

8. no effect
   The same inoculation treatment made no difference in cowpea nitrogen application and nodulation.

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

   Opposite direction

60 papers more in this group

mycorrhiza · symbiosis · Vigna unguiculata (cowpea)Positive and negative results

6 papers in the same direction as this claim · 1 in the opposite direction

1. no effect
   Mycorrhizal inoculation did not effectively improve cowpea nodulation.

   Abiotic and Biotic Limitations to Nodulation by Leguminous Cover Crops in South Texas · 2019

   Opposite direction

2. positive
   Cowpea root dry weight and nodule activity increased significantly only on the VAM side.

   LOCALIZED INCREASE IN NODULE ACTIVITY BUT NO COMPETITIVE INTERACTION OF COWPEA RHIZOBIA DUE TO PRE‐ESTABLISHMENT OF VESICULAR‐ARBUSCULAR MYCORRHIZA · 1987

   Same direction

3. positive
   Dual AMF and Rhizobia inoculation significantly increased plant vigor, nodule numbers and active nodulation rate.

   Optimizing biomass yield of three herbaceous forage legumes through dual inoculation of Arbuscular Mycorrhizal Fungi and Rhizobia · 2023 · compared with single inoculation and un-inoculated forages

   Same direction

4. positive
   The treatment gave 53.27 nodules, a significant increase.

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

   Same direction

5. positive
   Mycorrhizal inoculation with nutrient amendment significantly increased nodule, shoot and root dry matter yield of cowpea.

   Stimulation of mycorrhizal activity inVigna unguiculatathrough low level fertilization of an oxisol subjected to imposed erosion · 1990

   Same direction

6. positive
   Compost combined with AM generally increased cowpea nodule number and nodule weight.

   Assessment of AM biotechnology in improving agricultural productivity of nutrient-deficient soil in the tropics · 2006

   Same direction

7. positive
   Mycorrhiza with rhizobium produced higher nodulation than rhizobium alone.

   The Effect of Mycorrhiza (Glomus Geosporum), Rhizobium and Meloidogyne Incognita on Growth and Development of Cowpea (Vigna Unguiculata L. Walp). · 2010 · compared with rhizobium alone

   Same direction