The Allelopathic Efficacy of Sorghum (Sorghum bicolor L.) in Suppressing the Germination and Seedling Growth of Weeds in Sesame (Sesamum indicum L.) Crop
The Allelopathic Efficacy of Sorghum (Sorghum bicolor L.) in Suppressing the Germination and Seedling Growth of Weeds in Sesame (Sesamum indicum L.) Crop
Muhammad Saleem Chang1*, Muhammad Nawaz Kandhro1, Bakhat-un-Nisa Mangan1, Zia-ul-Hassan Shah2 and Siraj Ahmed Channa3
ABSTRACT
Allelopathy has emerged as eco-friendly, effective and sustainable tool for weed management. Sorghum contains various allelo-chemical compounds and weeds can be controlled by utilizing the allelopathic properties of sesame. The current Laboratory study was carried out access the allelopathic efficacy of sorghum (extract and powder) on preliminary growth stages of weeds associated with sesame. The experiment was laid out under a three replicated completely randomized design (CRD) with nine treatments including various concentrations of sorghum extract, powder, and their integration. The most common weeds species of sesame were selected and tested. The analysis of variance shown all levels of sorghum water extract and powder resulted in substantial suppression of weeds as compared to control. Sorghum extract @ 40 ml kg-1 soil exhibited the strong allelopathic potential with significant reduction of weeds seed germination (37.20, 42.34, 39.57 and 39.67 %), root length (8.06, 3.56, 4.48, and 2.23 cm), shoot length (4.40, 42.34, 39.57 and 4.96 cm), fresh biomass (3.97, 3.67, 2.00 and 2.10 g), dry biomass (2.73, 1.23, 1.00 and 1.28 g), vigour index (699, 310, 514 and 519) and moisture content (29.42, 37.29, 34.18 and 32.29 %). Hence, the overall findings suggested that the sole application of Sorghum extract @ 40 ml kg-1 soil exerted a higher phytotoxic potential and significantly suppressed the germination and seedling growth of all tested weeds as compared to control. Therefore, it is recommended the use of sorghum water extract was found to be more effective as compared to control as well as integrated doses.
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