Table 5.

Selected studies conducted on different crops with different liquid inoculants and bacteria strains in recent years.

Plant	Liquid Inoculant Medium	Bactria type	Cell count (CFU mL−1)	Nitrogen (%, unless specified)	Phosphorus (%, unless specified)	Potassium (%, unless specified)	Nodulation (%)	Plant growth (cm/plant)	Root dry mass (g/plant)	Shoot dry weight (g/plant)	References
Alfalfa	Yeast mannitol broth agar	Sinorhizobium meliloti L3Si	8.1✕108	3	-	-	100	16	-	0.018	(Buntić et al., 2019)
Vitis vinifera L. (grape)	Nutrient agar	Pseudomonas putida Rs-198	1.4✕1013	44 mg kg−1	29 mg kg−1	192 mg kg−1	-	-	-	-	(Lu et al., 2020)
Cucumber (Cucumis sativus)	Glycerin pitch	Lactobacillus	-	-	-	-	-	40	-	-	(Nasarudin et al., 2020)
Pepper (Capsicum spp.)	Nutrient medium	Pseudomonas putida Rs-198	1✕109	18	25	25	-	-	0.434	3	(Y. He et al., 2019)
Oryza sativa L. (rice) Toledo	N/A	Azospirillum brasiliense Ab-V5 and Ab-v6	2✕108	-	-	-	-	108	32	195	(Guimarães et al., 2020)
Oryza sativa L. (rice) Palotina								106	32	189
Oryza sativa L. (rice) Cascavel								111	33	192
Oryza sativa L. (rice) São Miguel do Iguaçu								107	33	189
Green gram (Vigna radiata L)	Tap water	Chlorella vulgaris at 100% concentration	-	25∗	43	17∗	133 (on day 6)	42	0.68	0.7	(Dineshkumar et al., 2020)
		Spirulina platensis at 100% concentration		46	66	17∗	142 (on day 6)	40	0.67	0.66
Cotton	Nutrient agar	Pseudomonas putida Rs-198	1✕1014	-	-	-	-	20	0.19	-	(Y. He et al., 2016)
Onion	Nutrient broth	Azotobacter sp. + Sphingobacterium sp. + Burkholderia sp.	1✕1010	-	-	-	-	42	-	-	(Tinna et al., 2020)
Chickpea	-	Bacillus subtilis	3.6✕109	30	-	18	-	-	2	3.0	(Abd_Allah et al., 2018)
Wheat	-	Azotobacter + PSB + KMB + ZSB	>8.5 ✕108	-	-	-	-	92	-	-	(Jain et al., 2021)