The excessive use of inorganic agrochemicals poses risks to both environmental and human health, necessitating the development of sustainable alternatives. This study evaluates the efficacy of a novel organic liquid fertilizer derived from Clidemia hirta and Chromolaena odorata , supplemented with Pongamia pinnata , Phyllanthus emblica , and Carica papaya , on the growth, yield, and root‐knot nematode ( Meloidogyne spp.) control in Basella alba under field conditions. The nutrient composition of the extracts was analyzed, and different concentrations (25, 50, 75, and 100 g L −1 ) of C. hirta and C. odorata were tested separately. Growth parameters were assessed using one‐way ANOVA, while the nematicidal efficacy of Azadirachta indica extract was evaluated against root‐knot nematodes. Results indicated that C. hirta at 100 g L −1 (CHM 100) and C. odorata at 75 g L −1 (COM 75) significantly enhanced growth and yield compared to the control and standard treatments. Additionally, A. indica extract effectively suppressed root‐knot nematode infestation in B. alba . These findings suggest that CHM 100 and COM 75 can serve as effective organic fertilizers, offering a sustainable alternative for enhancing crop productivity and pest management in horticulture.
Ratnayake et al. (Thu,) studied this question.
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