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Chemical and Biological Technologies in Agriculture
Fig. 1 | Chemical and Biological Technologies in Agriculture

Fig. 1

From: Challenge of transition: the history of a case study involving tropical fruits polyculture stimulated by humic acids and plant-growth promoting bacteria

Fig. 1

Changes on root traits of different plant seedlings (A: sugarcane, B: maize, C: tomato and D: arabidopsis treated with humic acids isolated from vermicompost in comparison with control—non treated seedlings). The concentration of humic acids (HA) used varied from 4 to 5 mM C L−1 in the hydroponic cultivation. Note the enhancement of lateral root emergence zone (highlighted by the circles) out of the meristematic zone. (Source: personnel file of LPC)

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