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Birsa Agricultural University, Ranchi

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1996 - 19973
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Subject: Silviculture and Agroforestry × End date: 1997 × Start date: 1996 × Type: Thesis ×
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    ThesisItemOpen Access
    Studie4s on Seed Germination And Seedling Growth of Teak ( Tactona Grandis Linn F.)
    (Birsa Agricultural University, Ranchi, 1997) Pankaj Kumar Singh; V. Sivaji
    Preparation of good nursery gook for teak is prerequisite for raising plantations as health and vigour of the seedlings is an index for stump preparation and its future performance on out planting in the field. Present investigations were aimed to determine the optimum size of the fruits, best provenance and most suitable pretreatment needed for production of nursery stock of Tectona grandis Linn.f. Three fruits sizes viz. Large fruit 14mm to 18mm diameter (L.F.), Medium fruit = 11mm to 13mm dia. (H.F.), Small fruit = 8mm to 10mn (S.F.). Three provenances viz. P₁ = Ranchi, P2 = Jabalpur, Pa = Dehradun and four treatments including control, viz. C = Control, 28-D=20 days alternate soaking/drying (12 hours each), 35-D-35 days alternate soaking/drying (12 hours each), 50-D-50 days alternate soaking/drying (12 hours each) were taken for the study. The studies were conducted to study the effect of factors individually and interaction of fruit size and provenance, fruit size and pretreatment. The nursery experiments were conducted in Completely Randomised Design (C.R.D.) with three replications during year 1996 at the nursery of Faculty of Forestry, B.A.U. Kanke, Ranchi. Laboratory investigations were also conducted to study emptiness and seededness in fruits of teak. Results of present investigations indicated that the bigger sized fruits having more than 11mm diameter consists better percentage of seeded fruits and was found to be most suited for the germination and growth of seedlings. The dry weight of shoot, root and leaves was found to be more in case of large sized fruits, whereas, it was found that, it takes more time for commencement of germination in comparison to small sized fruits. Results of experiment indicated that the provenance had shown nonsignificant influence on the parameters studied with an exception of shoot length. However, the fruits from Jabalpur provenance had given higher values on parameters studied. Present study had shown that the pretreatment has significant influence on all the parameters of germination and growth of seedlings. Increase in the number of days of pretreatments will reduce the number of days taken for the commencement of germination. It was found that the higher values of growth parameters were obtained from the fruits given 20 days treatment than that of the 50 days treatment. Interaction of the factors between fruit size and provenance and fruit size and pretreatment did not have any significant influence on any of the parameters studied. Thus, in the present study fruit size and pretreatment had shown the significant on the germination and growth of the teak seedlings. Provenance, interaction of factors between fruit size and provenance, fruit size and pretreatment had shown nonsignificant results in most of the parameters studied.
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    ThesisItemOpen Access
    Effect of Plant Growth Regulators on Stem Cutting of Dalbergia Latifolia Roxb. And Dalbergia Sissoo Roxb
    (Birsa Agricultural University, Ranchi, 1997) Lalan Kumar Sharma; Dr. O. N. Pandey
    It is well known fact that the quality and quantity of wood in India is depleting at an alarming rate. National Forest Policy(1988) enunciates that 1/ 3rd of the total land area of the country should be under forests. At present the total recorded area of the forest in India is only 19.4% (Anon, 1991) To overcome the situation we have to maintain the natural forest cover as well as to make large scale plantations of multipurpose tree species (MPTS). Dalbergia latifolia (Rosewood) and Dalbergia sissoo (Shisham) are the two species belonging to family Papilionaceae which rank among the finest woods Being good fodder and nitrogen fixing tree species these are opted in afforestation/ reforestation/social-forestry/agroforestry programmes very frequently. Nursery technique of D. sissoo has been standardized by various scientists Some attempts have also been made with stem cuttings. But most of the works have been done in mist condition. The technique for the rooting of cuttings in open conditions is yet to be standardized. No work has been reported on the propagation of D. latifolia except Negi (1982). It is a poor seed producing species. To maintain the quality of timber and to commercialize its propagation, the present investigation entitled "Effect of plant growth. regulators on stem cuttings of Dalbergia latifolia Roxb. and Dalbergia sissoo Roxb." was conducted. Four levels of P.G.RS (Plant Growth Regulators) ie.. 2000 ppm IBA. 5000 ppm IBA. 8000 ppm IBA solution and surootex-05 grade in powder form. were taken as treatments. Stem cuttings of 18-20 cm length and 0.5 to 10 cm diameter were collected from one-year old shoots of 10-15 years age class trees Observations were recorded upto four months. The experiment was conducted in Randomized Block Design with three replications during 1995 at Rarha Research Station of Faculty of Forestry, B.A U. Kanke, Ranchi Regarding root behavior, D. sisson performed better in comparison to 1). latifolia in all respects viz. number of days taken for rooting, number and length of primary & secondary roots, percentage of rooting. 62% rooting was achieved by D. Sisson whereas 1. latifolia secured 50% rooting Among levels of hormones used. IBA 5000 ppm always showed better result than other treatments 83% rooting response was seen in 5000 ppm IBA followed by 65% in 2000 ppm IBA. Surootex got fourth position having 40% of rooting. All the treatments were superior to control. Interactions between the species and levels of P.G.Rs showed significant effect on percentage of rooting. D.sixson with 5000 ppm IBA combination secured the maximum (39%) and D). latifolia with control secured the minimum (25%) Higher percentage of survival of plants (56%) was given by D. sissoo and D. latifolia gave 46% of survival 5000 ppm again showed its superiority giving maximum percentage of survival (78%) followed by 2000 ppm IBA (59%). Surootex got fourth position in this respect but all the treatments showed superior result to control. Regarding growth and uniformity of plants. D. sisson between species and 5000 ppm among the levels of hormones showed the best result in all respects viz. number of leaves pershoot, shoot length, plant height and basal diameter except in days taken for shoot emergence where D. latifolia performed better Maximum plant height of 38.0 cm was recorded after the four months of planting of cuttings in case of D. sissoo. D. latifolia achieved 33.0 cm of plant height during this period. 5000 ppm again attained the maximum height (37.2 cm) followed by 2000 ppm IBA (36.8 cm). Surootex got fourth position in this respect. At all stages of time the growth and uniformity of the plants was maintained. Hence for rooting of cuttings, 5000 ppm IBA may be recommended to growers for future use for the multiplication of plants of D. latifolia and D. sissoo.
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    ThesisItemOpen Access
    Standardization of Nursery Technique of Pjerocadus Marsudrum Roxb And Gmelina Areoria Roxb.
    (Birsa Agricultural University, Ranchi, 1996) Ras Bihari Sagh; Dr.O.N. Pandey
    Standardization of nursery technique of a tree species is an important pre-requisite as health and vigour of nursery stock is an index of its future performance on out planting in the field. Present investigations were aimed to determine the optimum size of polythene bag and the most suitable potting mixture needed for production of nursery stock of Pterocarpus marsupium and Gmelina arborea. Four bag sizes viz., S 10cm x 20cm with 100 gauge, S2 13.5cm x 24.5cm with 150 gauge, S3 17cm x 27.5cm with 150 gauge, S4= 20cm x 30cm with 200 gauge; and four potting mixtures viz.. soil, sand and FYM in 2:1:1 ratio (M), in 2:1:0 ratio (M2). in 1:1:1 ratio (M3). in 1:1:0 ratio (M): were taken for the study. The nursery experiments were conducted in a Completely Randomized Design with three replications during 1993 at Rarha Research Station of Faculty of Forestry, BAU. Kanke, Ranchi. Laboratory investigations were also conducted to study the nutrient relations in different plant parts of both the species.