Effect of Calotropis gigantea Extracts on Early Growth Performance and Soil Quality in Cluster Bean (Cyamopsis tetragonoloba)

Author(s): SM Sangle and Jyoti Phulambrikar

Abstract:

The present research article provides an integrated and critical evaluation of the allelopathic influence of Calotropis gigantea on germination, early seedling growth and soil health parameters of cluster bean (Cyamopsis tetragonoloba (L.) Taub.), an economically and ecologically significant legume crop. Aqueous extracts prepared from different plant parts of C. gigantea (leaf, stem and flower) were incorporated into soil under controlled conditions and their effects were compared with untreated control soil. Germination percentage, seedling height at different growth stages, and a comprehensive set of soil physico-chemical parameters were assessed. Results revealed differential, plant-part-specific effects: flower and leaf extracts showed moderate stimulatory effects on germination and early growth, whereas stem extract exerted strong inhibitory effects. Soil analysis indicated marked alterations in pH, electrical conductivity, organic carbon, macro- and micronutrient availability, bulk density, carbon stock and soil health index. A critical interpretation suggests that the allelochemicals present in C. gigantea mediate complex plant–soil feedbacks that can either suppress or transiently enhance crop performance depending on residue type and concentration. The study highlights both the ecological significance of C. gigantea in agroecosystems and the need for cautious evaluation before its biomass is considered for agronomic use.

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Pages: 118-121     |    2 View     |    0 Download