Skip to main content

Table 1 Examples of studies documenting plant growth-promoting rhizobacteria in Africa

From: Advancement and practical applications of rhizobacterial biofertilizers for sustainable crop production in sub-Saharan Africa

Crop PGPR PGP effects Place of study References
Common Beans Rhizobium 285% increase in Fe, 67% increase in Zn Tanzania [17]
Rhizobium spp. Increased shoot dry weight and nodule weight Kenya [18]
Rhizobium spp. Increased uptake of nutrients Tanzania [19]
Rhizobium spp. Improved yields South Africa [20]
Rhizobium Increased seed yields over control Kenya [21]
Rhizobia Significant yield increase Ghana, Kenya, Tanzania, Uganda [22]
Chickpea Rhizobium Up to 138% increase in yield Ethiopia [23]
Cowpea Rhizobia Increased yields Kenya [24]
Bradyrhizobium Improved nodulation, dry matter, and grain yield Ghana [25]
Flax Azospirillum, Azotobacter 50% reduction in fertilizer use Egypt [26]
Bacillus Enhanced productivity Egypt [27]
Maize Paenibacillus alvei, B. safensis, B. pumilus, Lysinibacillus sphaericus 33% yield increments South Africa [28]
Azotobacter, Azospirillum 100% reduction in fertilizer use Egypt [27]
Pseudomonas, Klebsiella oxytoca, Enterobacter sakazakii Increased agronomic characteristics Nigeria, Kenya [29]
Mung bean Bradyrhizobium Increased nitrogen fixation and yields Ethiopia [30]
Okra P. aeruginosa Improved growth Nigeria [31]
Azospirillum, Azotobacter 100% reduction in fertilizer use Egypt [32]
Potato Serratia, Citrobacter, Serratia Enhanced nutrient levels in tubers and rhizosphere soils Kenya [33]
Rice Azolla pinnata, A. nilotica, A. filiculoides, A. caroliniana Increased yield and soil N content Nigeria, South Africa, Ivory Coast, Togo, Senegal, and Kenya [34]
Soybean Rhizobium Increased yield by 447 kg ha−1 Nigeria [35]
Bradyrhizobium japonicum Increased yield and micronutrient uptake Tanzania [17]
Rhizobium Up to 47% increase in yields Several countries [36]
Rhizobium 15–30% increase in yields Kenya [37]
Bradyrhizobium 24% increase in yields Ghana [25]
 Bradyrhizobium Significant increase in dry weight of shoot and grain yield Kenya [38]
Rhizobium Increased nutrients content in soil Tanzania [39]
Rhizobium Increased yields Several countries [40]
Rhizobia Significant yield increase Ghana, Kenya, Tanzania, Uganda [22]
Sweet fennel Rhizobium Enhanced productivity Egypt [41]
Tomato Bacillus subtilis, Pseudomonas aeruginosa, Klebsiella pneumonia, Citrobacter youngae Enhanced seedling height, leaf area, number of leaves Nigeria [42]
P. aeruginosa Improved growth Nigeria [31]