Propagation studies of Kagzi lime (Citrus aurantifolia Swingle) under Jammu region
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Date
2022-01
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Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The present investigation was undertaken to study the “Propagation studies of Kagzi lime (Citrus aurantifolia Swingle) under Jammu region” at the Rainfed Research Sub-Station for Sub- Tropical Fruits (RRSS), Raya (SKUAST- Jammu) during the rainy season of 2020- 2021. The experiment was laid out in factorial RCBD with three replications and sixteen treatments. There were three levels of IBA (500 ppm, 1000 ppm and 1500 ppm) along with control (water) and four rooting media in different ratio, soil + sphagnum moss (2:1); soil + cocopeat + vermicompost (2:1:1) and soil + F.Y.M + sand (2:1:1) along with the control (soil). IBA@ 1500 ppm was found effective in maximizing success percentage (%) of layered plants (87.66%); root parameters i.e. number of primary roots (24.31), maximum length of primary roots (6.58 cm), number of secondary roots (30.28), maximum length of secondary roots (7.84 cm); survival percentage of air layered plants (88.08%); growth parameters including shoot parameters i.e. number of shoots (7.70) and number of leaves per shoot (24.02); leaf parameters viz., number of leaves per plant (48.42), leaf area (50.47 cm2), fresh weight of leaves (54.24 g), dry weight of leaves (6.69 g), leaf chlorophyll content (47.86) and leaf area index (0.54) whereas, least values for same were reported in control. Rooting media, soil and sphagnum moss (2:1) was also found effective in maximizing all above given parameters as compared to soil. Interaction effect of growth regulator and rooting media, IBA@1500 ppm + soil and sphagnum moss (2:1) proved significant in maximizing success percentage (%) of layered plants (95.99%); root parameters; survival percentage of air layered plants (98.68%); growth parameters including shoot parameters; leaf parameters whereas, minimum success percentage (%) of layered plants (62.69%) was reported in control. Also, maximum B:C ratio of 1:4.8 was recorded in above cited treatment and minimum of 1:0.2 was recorded in control. Hence, it can be ascertained that for layering in Kagzi lime, best results can be obtained with the combined effect of IBA@1500 ppm as rooting treatment and soil + sphagnum moss (2:1), as rooting media.
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Preferred for your work. Sharma, R. 2021. Propagation studies of Kagzi lime (Citrus aurantifolia Swingle) under Jammu region. M.Sc. Thesis, SKUAST-Jammu.