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2007 - 20094
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Subject: Agroforestry × End date: 2009 × Start date: 2007 ×
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    ThesisItemOpen Access
    Vegetative propagation studies in important bamboo species
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-08) Yewale, Aalok Gulabrao; Kaushal, Rajesh
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    ThesisItemOpen Access
    Vegetative propagation by nodal cuttings in Eucalyptus clones
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-09) Tewari, Neetu; Tiwari, Salil K.
    The present investigations entitled “Vegetative propagation by nodal cuttings in Eucalyptus clones” was carried out at new site of Agroforestry Research Centre (AFRC), Haldi, G. B. Pant University of Agriculture and Technology, Pantnagar during March to June 2009. The investigations were performed in two different experiments in Completely Randomised Design in mist chamber and Randomised Block Design in vegetative multiplication garden (VMG). In experiment I, eight different clones viz. K-25, K-43, G-22, AP-10, AP-7, K-23, K-14 and K-16 were studied for their growth behaviour in VMG and sprouting & rooting response under intermittent misting. The results revealed the significant variation in growth, sprouting and rooting behaviour of different Eucalyptus clones. The following order was observed for clonal growth behaviour in VMG - K-25> AP-10> G-22> K-23> K-16> K-43> AP-7> K-14. For rooting, the order was K-43> K-25> G-22> AP-7> K-23> K-16> K-14> AP- 10. While maximum sprouting was observed in K-16 followed by K-14, K-23, G-22, AP-7, AP-10, K-43 and K-25. In Experiment II, effect of clone, girth class and height on growth behaviour, sprouting and rooting response was studied in two different Eucalyptus clones viz. AP-7 and K-25. The experiment was conducted with four different girth class treatments (viz. 15-20 cm, 20-25 cm, 25-30 cm and 30-35 cm) and three different stump height treatments (viz. 30 cm, 45 cm and 60 cm). The trend of growth behaviour in VMG was found K-25> AP-7. Similar trend was observed for sprouting and rooting behaviour. Among different girth classes G2 was found to be optimum for enhanced coppice shoot production while for rooting of cuttings G4 was optimum girth class. Among different stump heights, 60 cm was found to be optimum for coppice shoot production in VMG while there was no significant effect of height on sprouting response. However, for rooting behaviour the trend was H1> H2> H3. The interaction effect of clone, girth class and height was found significant for growth behaviour in VMG while it was non-significant in rooting behaviour. Hence, it was concluded that, growth performance of K-25 and AP-10 was superior than rest clones after coppicing in vegetative multiplication garden. Further, K-43 and K-25 can be easily propagated by rooted cuttings while AP-10 was difficult to root. The optimum height for enhanced coppice shoot production was found 60 cm. Whereas, 30 cm stump height was best for obtaining maximum rooted cuttings. The optimum girth of coppiced tree was found to 20-25 cm for enhanced coppice shoot production. While the girth of 30-35 cm was found to be more suitable for better rooting of cuttings.
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    ThesisItemOpen Access
    Studies on carbon sequestration in poplar (Populus deltoides Bartr. ex. Marsh.) based agroforestry system with varying tree density
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-07) Pingale, Bhanudas Narayan; Bana, O.P.S.
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    ThesisItemOpen Access
    Studies on macro and micro propagation in bamboo
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2007-06) Joshi, Reena; Tewari, Salil Kumar
    The present investigation entitled “Studies on Macro and Micro Propagation in Bamboo” was carried out at new site of Agroforestry Research Centre, Haldi, Pantnagar during June 2006 to May 2007 and in tissue culture laboratory of the Agroforestry Section, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar. Experiments were conducted to see the effect of age (one and two year old), growing condition (open intermittent misting and open no misting), position (basal, middle and top) in different seasons (June, August, October and March) on rooting and sprouting of culm cuttings of Bambusa balcooa and Dendrocalamus asper. The findings indicated that two year old culm cuttings collected from basal position in the intermittent misting condition gave best response in B. balcooa. In D. asper, one year old culm cuttings with above condition showed good results. The findings also indicated that rooting and shooting per cent of culm cuttings planted in different season showed response as March> June> August> October in both the species. For micropropagation nodal buds from one year old B. balcooa and D. asper were taken as ex-plant. In B. balcooa for sterilization 0.1% Tween-20 (5 min), (1.0% Bavistine (5 min), 0.1% Streptomycin (4 min), 70% Ethanol (5 min), 1.0% NaOCl (8 min) and 0.1% HgCl2 (3 min)), for bud break (3.0 ppm BAP+ 1.0 ppm GA+ 0.5 ppm Kinetin), for proliferation of bud (4.0 ppm BAP+ 0.5 ppm Kinetin) and in D. asper 0.1% Tween-20 (5 min), (1.0% Bavistine (4 min)+ 0.1% Streptomycin (3 min)+ 70% Ethanol (5 min)+ 1.0% NaOCl (10 min)+ 0.1% HgCl2 (5 min)) for sterilization, (3.0 ppm BAP, 0.5 ppm Kinetin+ 0.5 ppm GA) for bud break, (5.0ppm BAP+ 1.0 ppm) for proliferation of bud were found to be best for this investigation. In vitro rooting studied using different auxins; 3 ppm NAA+2.5 ppm IBA and 4 ppm+ 2 ppm IBA were found to be best for B. balcooa and D. asper respectively.