EFFECT OF TIME OF SOWING AND CHEMICAL TREATMENTS ON SEED GERMINATION AND SEEDLING GROWTH OF CUSTARD APPLE (Annona squamosa L.) CV. SINDHAN 2845

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dc.contributor.advisorD. R. Kanzaria
dc.contributor.authorDADHANIYA DISHABEN BHIKHUBHAI
dc.date.accessioned2021-07-06T05:17:29Z
dc.date.available2021-07-06T05:17:29Z
dc.date.issued2019-07
dc.description.abstractAn experiment was conducted at Lalbaug, Fruit Research Station, Department of Horticulture, College of Agriculture, Junagadh Agriculture University, Junagadh during the year of 2018 with a view to study the “Effect of time of sowing and chemical treatments on seed germination and seedling growth of custard apple (Annona squamosa L.) cv. Sindhan”. The experiment laid out in Completely Randomized Design with three replications. The treatments comprised of three different levels of time of sowing (S) viz., S1 - 15th April, S2 - 15th May; S3 - 15th June and seeds were treated with six different levels of chemicals (M) viz., M1 - Control, M2 - GA3 200 ppm soaking for 24 hours, M3 - Concentrated H2SO4 0.1% soaking for 2 minutes, M4 - Concentrated HCl 0.1% soaking for 2 minutes, M5 - Cow dung and Cow urine slurry (1:2 ratio) soaking for 24 hours and M6 - Hot water (50 to 60˚C) soaking for 24 hours. The results on the effect of time of sowing indicted that custard apple seed sowing at 15th April (S1) executed significantly the lowest days taken for germination (17.64 days) and maximum seedling vigour index - I (3779.31 cm). Growth parameters were also significantly influenced by S1 - 15th April. It was recorded significantly maximum height of seedling (20.2, 39.01 and 50.01 cm), stem girth (2.39, 3.20 and 4.10 mm) and number of leaves (5.26, 11.32 and 17.51) at 60, 90 and 120 DAS, respectively. Maximum shoot length (33.31 cm), longest root length (16.70 cm), number of roots (11.02) and fresh weight of shoot (5.90 g) at 120 DAS was observed in S1 - 15th April. The result on the effect of different chemical treatments indicated that the M2 - GA3 200 ppm soaking for 24 hours executed minimum days required for germination (16.48 days) and significantly maximum seedling vigour index- I (4774.02 cm). Growth parameters were also significantly influenced by M2 that maximum height of seedling (22.53, 45.00 and 53.82 cm), stem girth (2.48, 3.58 and 4.49 mm) and number of leaves (6.94, 12.90 and 19.10) at 60, 90 and 120 DAS respectively. Maximum shoot length (36.83 cm), root length (16.99 cm), number of roots (11.57) and fresh weight of shoot (6.55 g) at 120 DAS was observed in M2. Highest root: shoot ratio (0.25) was observed in M3. Interaction effect of time of sowing and chemical treatments was found significant on germination parameters. The maximum seed germination percentage (90.33 %), minimum seed germination span (22.13 days), significantly highest germination index (4.23) and significantly maximum vigour index - II (386.02 g) were observed in S1M2. Growth parameters were also significantly influenced by S1M2 treatment combinations. The maximum leaf area (13.03 cm2 ), fresh weight of root (1.60 g), dry weight of shoot (3.93 g), dry weight of root (0.29 g) and highest percentage of survival (89.00 %) were found with S1M2. Hence, to raise custard apple seed in net house, it should be sown on 15th April with soaking treatment in GA3 200 ppm for 24 hours to attain better seed germination and seedling growth of custard apple cv. Sindhan.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810170120
dc.keywordsCustard apple, Time of sowing, Chemicals, Seed germination, Seedling growthen_US
dc.language.isoEnglishen_US
dc.pages111pen_US
dc.publisherJAU, JUNAGADHen_US
dc.subHorticultureen_US
dc.themeEFFECT OF TIME OF SOWING AND CHEMICAL TREATMENTS ON SEED GERMINATION AND SEEDLING GROWTH OF CUSTARD APPLE (Annona squamosa L.) CV. SINDHAN 2845en_US
dc.these.typeM.Scen_US
dc.titleEFFECT OF TIME OF SOWING AND CHEMICAL TREATMENTS ON SEED GERMINATION AND SEEDLING GROWTH OF CUSTARD APPLE (Annona squamosa L.) CV. SINDHAN 2845en_US
dc.typeThesisen_US
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