Browsing by Author "YOURMILA, KUMARI"
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ThesisItem Open Access BIOMASS PRODUCTION, NUTRIENT CYCLING AND CARBON SEQUESTRATION POTENTIAL OF BAMBOO PLANTATIONS IN MID-HILLS, SUB-MONTANE AND LOW HILLS OF HIMACHAL PRADESH(UHF,NAUNI, 2017-12) YOURMILA, KUMARI; BHARDWAJ, D.R.ABSTRACT The present investigations entitled “Biomass production, nutrient cycling and carbon sequestration potential of bamboo plantations in mid-hills, sub-montane and low hills of Himachal Pradesh” were carried out at three sites of Dr YSP University of Horticulture and Forestry, Nauni-Solan, Himachal Pradesh viz., experimental field of Department of SAF at Nauni, comprising of 7 bamboo species under pure bamboo plantation and 3 bamboo species under bamboo based agroforestry system in mid-hill conditions, RHRS Jacch, Kangra comprising of 5 bamboo species under bamboo based agroforestry system in sub-montane conditions and RHRS Bajaura, Kullu comprising of 4 tree species in combination with Phyllostaychys pubescens, during 2015-2016. The results revealed that Dendrocalamus hamiltonii showed better growth and development in pure bamboo plantation under mid-hill conditions. Whereas, in bamboo based agroforestry system, Bambusa balcooa displayed better growth behavior than Dendrocalamus asper and Dendrocalamus hamiltonii. Under submontane low hill conditions, the growth was better in Bambusa bambos when planted in agroforestry system while, Phyllostachys pubescens showed better growth and development behaviour when planted under the canopy of Platanus orientalis. The biomass of different bamboo species was affected significantly due to variation in climatic conditions of HP. In pure bamboo plantation under mid-hill conditions, Dendrocalamus asper produced maximum biomass whereas, in bamboo based agroforestry system, Dendrocalamus hamiltonii produced maximum biomass. In bamboo based agroforestry system under sub-montane and low-hill conditions, Bambusa bambos showed highest biomass production while, Phyllostachys pubescens produced highest biomass when planted with Platanus orientalis. Irrespective of bamboo species, the biomass production enhanced with increasing culm age. Dendrocalamus asper, Dendrocalamus hamiltonii and Bambusa bambos showed better carbon sequestration potential under mid-hill and sub-montane conditions, respectively. Under mid hill conditions, Dendrocalamus asper showed better nutrient cycling in pure plantation as well as in bamboo based agroforestry system while, under sub-montane low hill conditions, Bambusa bambos showed better nutrient cycling under bamboo based agroforestry system. In temperate climatic conditions, better nutrient status was recorded in soil under Phyllostachys pubescens and Platanus orientalis. Except for soil pH, all the soil physico-chemical and microbiological parameters decreased with increase in soil depth.ThesisItem Open Access PROPAGATION STUDIES ON Myrica nagi Thunb.(2012) YOURMILA, KUMARI; SHARMA, D.P.ABSTRACT The present investigation entitled “Propagation studies on Myrica nagi Thunb.” was undertaken in the Department of Silviculture and Agroforestry, Dr. Y.S. Parmar University of Horticuture and Forestry, Nauni, Solan 173230 (H.P.) during 2011-2012. The study involved three experiments in all. Experiment-I, involved the determination of the effect of pre-sowing seed treatments on germination behavior of Myrica nagi, seeds were collected during second week of May, 2011 and depulped and subjected to various pre-sowing treatments. Application of concentrated H2SO4 for 10 minutes was found to be maximum germination percentage (33.33%), germination capacity (90.00%), germination energy (18.33%), germination speed (0.74) germination value (0.57) and germination index (0.28). The experiment-II, dealt with effect of auxins application on rooting behavior in pre-conditioned (girdled) stem cuttings of Myrica nagi . Twelve different treatments of growth hormones (Auxins) were used. Application of 1.0% IBA resulted in maximum Sprouting percent (70.00%), Callusing percent (66.66%), Rooting percent (23.33%), Survival percent (16.67) and Root Length (6.77cm) and proved to be most significant from all other treatments. The experiment-III, dealt with effect of auxins application on rooting behavior of Myrica nagi layered shoots in two seasons i.e. Summer (May) and Monsoon (July). Nine different treatments of growth hormones (Auxins) were used. Application of 0.5% NAA resulted in maximum Callusing percent (26.67%) , Rooting percent (36.67%), Survival percent (16.67%) and Root Length (12.33cm) in summer as compared to monsoon season i.e Callusing percent (16.67%), Rooting percent (33.33%), Survival percent (13.33%) and Root Length (10.83cm) respectively.