INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 16, No. 05, Month SEPTEMBER, Year 2020, Pages 1153 - 1164

Allelopathic potential of aqueous extract of archidendron jiringa (jering) pods for weed control in the swamp paddy field

Nurjanah, U., Setyowati, N. and Simarmata, M.

Abstract Download PDF

The allelopathic potential of Archidendron jiringa (jering) pods to control weeds in swamp paddy field was investigated. The Aqueous extract of jering pods was first evaluated on the germination of paddy seeds in the laboratory. Then, field experiment was conducted to study the allelopathic effect of jering pod extracts on weeds and swamp paddy. The results showed that the aqueous extracts of jering pods inhibited the germination and the growth of radicles and plumules of paddy germination. The extracts showed allelochemical effects to inhibit the emergence of weeds in the swamp paddy plots, where the level of inhibition was stronger by increasing the concentration of jering pods extracts. Preemergence application of an aqueous extract of jering pods effectively controlled the number of population and the growth of narrow-leaf (grass and sedges) weeds, and the growth of broad-leaf weeds. The highest efficacy observed at the highest concentration of extract of 500 g/L, suppressed dry weight of narrow-leaf and broad-leaf weeds by 74.4 and 37.5 percent, respectively. As the weeds were suppressed, the growth and yield of swamp paddy were increased in the number of productive tillers, dry weight of biomass, and yield by 19.01, 42.61, and 43.54 percent, respectively.

Keywords

Allelochemicals, Allelopathy, Jering pods, Swamp paddy, Weed control

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