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Subject: Horticulture × Author: Hem Raj × End date: 2006 × Start date: 2006 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Effect of indole butyric acid on rooting and success of cuttings from bearing trees and juvenile plants of Japanese plum (Prunus salicina lindl.)
    (CCSHAU, 2006) Hem Raj; Chharia, A.S.
    The present study is entitled as, “Effect of Indole Butyric Acid on rooting and success of cuttings from bearing trees and juvenile plants of Japanese Plum (Prunus salicina Lindl.)”, was conducted in Nursery of Department of Horticulture, CCS Haryana Agricultural University, Hisar during winter season of 2003-2004. The experiment was laid out in Randomized Block Design having 3 replications in field on juvenile and mature cuttings with 6 treatments of IBA and three planting methods. Investigation on the effect of Indole Butyric Acid (I.B.A.) on rooting and success of cuttings from bearing trees and juvenile plants of Japanese plum (Prunus solicina Lindl.) were carried out during 2004-2005 on mature cuttings of grown up bearing trees and juvenile cuttings from two years old nursery plants of plum cv. Green Gage grown in the Experimental Orchard of Department of Horticulture at CCS HAU, Hisar and Experimental Orchard of Department of Horticulture in college of Agriculture at Kaul, District Kaithal, Haryana. Twenty cm. long and 5mm to 15mm thick juvenile and mature cuttings of Japanese plum were given different treatments of Indole Butyric Acid (IBA) @ 0, 500, 1000, 2000, 3000 and 4000 ppm by immersing basal one third portion of these cuttings up to five centimeter and subjected to three different treatments of planting viz. direct planting in nursery bed just after collecting and treating with IBA, planting IBA treated cuttings in nursery beds after callusing up to thirty days in pit, planting in nursery beds after IBA treatments and after sprouting them in mist propagation chamber of HARSAC, Hisar keeping air temperature of 30±2ºC and relative Humidity of 80%. Different observations were recorded in 2004 to 2005. It was observed that on the basis of different observations of initiation and completion of sprouting, number of roots per cutting, percentage of sprouting, rooting percentage, duration of sprouting, average root length and length of largest root, NPK and boron content in roots and content of phenolic co-factors, it can be concluded that IBA 1000 ppm is best concentration in treating plum cuttings for rooting. Results of IBA 1000 ppm and 2000ppm regarding percentage of rooting were at par. Rooting was less at IBA 500 ppm and minimum in untreated control cuttings. Highest concentration of IBA appeared inhibitory in rooting of Japanese plum cuttings. On the basis of overall results, it was found that juvenile cuttings of plum were better than mature cuttings. However, juvenile cuttings could not gain enough thickness up to one year for grafting when it is used as rootstock. Plants of plum raised through juvenile cuttings should be grown up to two years to be used as rootstocks of proper thickness. On an average it can be inferred that direct planting in Japanese plum in January, 2004 was better than callused planting and it was at par with mist chamber planting. In direct planting perhaps there was less drying in handling plum cuttings planted in January. Plum cuttings were better adapted to direct planting and there was no need of callusing these cuttings in pit. Better results of direct planting were probably because winter rains were there and humidity near ground around cuttings was enough particularly when these cuttings were frequently irrigated. Temperature at that period of taking cuttings for direct planting was congenial and optimum for proper rooting, sprouting and growth of cuttings. On the basis of overall observations it is concluded that rooting and success of Japanese plum Prunus salicina L. cuttings was significantly more in direct planting of cuttings as compared to other methods of planting. IBA 1000 ppm and IBA 2000 ppm were most effective in inducing rooting in juvenile and mature cuttings of Japanese plum as compared to untreated control cuttings. Juvenile cuttings proved better as compared to mature cuttings. However, juvenile cuttings could not attain proper grafting thickness up to one year of planting. Plants of plum raised through juvenile cuttings should be allowed to grow up to two years to be used as rootstocks of proper thickness.