Biostimulants Using Humic Substances and Plant-Growth-Promoting Bacteria: Effects on Cassava (Manihot esculentus) and Okra (Abelmoschus esculentus) Yield

Traditional agriculture represents the most-extensive food-producing segment in world. However, these agroecosystems are widely and closely associated with rural poverty, reflecting dualism between subsistence commodity-producing sector peripheric countries. Therefore, socially adapted technologies may be a reliable helpful methodology to enhance crop production. Humic substances natural organic biostimulants extractable as water suspensions from renewable sources such agricultural biomass farming residues. These easy-to-handle extracts mixed plant-growth-promoting bacteria (PGPB) used within low-cost technological application circular economy strategy. Few investigations have been focused on use of biostimulant practices marginal or crops. Cassava (Manihot esculenta Crantz) okra (Abelmoschus esculentus) two essential foods for poor communities territories tropical subtropical The aim this study was evaluate effect foliar humic/PGPB cassava crops grown an soil very low fertility. In pot trials, applied improved plant development 200% increase root weight cassava, while preservation active diazotrophic by 10- 100-times formulation humic acid. real field systems, treatment increased yield 70% 50%, respectively thereby allowing simultaneous nitrogen savings best performance obtained at lower N fertilization rate. can play role transition process, helping food security autonomy impoverished farmers. Combining elements traditional knowledge modern science is create innovative enabling sustainable management agroecosystems.