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ThesisItem Open Access STATISTICAL STUDIES ON LIFE TABLE OF TWO INSECT SPECIES PLUTELLA XYLOSTELLA (L.) AND HELICOVERPA ARMIGERA (HUB.)(COLLEGE OF FORESTRY DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI, SOLAN, 2004) MOHAN, CHANDER; MAHAJAN, P. KThesisItem Open Access SOME MULTIVARIATE STUDIES ON MORPHOLOGICAL CHARACTERS OF BAMBOO (DENDROCALAMUS STRICTUS ROXB.) IN SUBTROPICAL AND SHIVALIK HILLS OF HIMACHAL PRADESH(COLLEGE OF FORESTRY DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI, SOLAN, 2001) AWASTHI, NISHANT; MAHAJAN, P. KThesisItem Open Access APPROXIMATE OPTIMUM STRATIFICATION FOR EQUAL ALLOCATION(COLLEGE OF FORESTRY DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI, SOLAN, 2001) MEENAKSHI; MAHAJAN, P. KThesisItem Open Access SITE SPECIFIC VARIABILITY ANALYSES AMONG CPT'S OF DALHERGIA SISSOO FOR PHYSICAL CHARACTERS(COLLEGE OF FORESTRY DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI, SOLAN, 2000) JAMWAL, SANJAY K; MALHOTRA, RThesisItem Open Access VOLUME MODEL FOR EUCALYPTUS HYBRID FRI-4 UTS DEVELOPMENT AND COMPARATIVE PREDICTIVE ABILITY(COLLEGE OF FORESTRY DR. YASHWANT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI, SOLAN, 1999) THAKUR, BABITA; DHALL, S. PThesisItem Open Access USE OF AUXILIARY INFORMATION FOR INCREASING THE PRECISION OF THE ESTIMATORS - A CRITIQUE(DR. YASHWNAT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI SOLAN, 1999) GARG, SHALINI; DHALL, S.PThesisItem Open Access STUDIES ON PREDICTION MODELS IN HILL POPULS DELTOIDES G-3(DR. YASHWNAT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI SOLAN, 1996) PANDEY, RAJIV; DHALL, S. PThesisItem Open Access DETERMINATION OF OPTIMUM PLOT SIZE ESTIMATION OF TOMATO (LYCOPERSICON ESCULENTUM MILL.) YIELD IN SAPROON VALLEY OF SOLAN DISTRICT (H.P.)(DR. YASHWNAT SINGH PARMAR UNIVERSITY OF HORTICULTURE AND FORESTRY NAUNI SOLAN, 1992) SHARMA, ANJU; KANWAR, B. S;ThesisItem Open Access STATISTICAL INVESTIGATION ON GROWTH ATTRIBUTES FOR VOLUME ESTIMATION OF Pinus roxburghii(2016) KIRAN; GUPTA, R.K.ABSTRACT The present investigation entitled “Statistical Investigation on growth attribute for volume estimation of Pinus roxburghii” was conducted in Solan district of Himachal Pradesh. Data on Pinus roxburghii was collected from the State Forest Department, Solan. Stratified random sampling technique was used to select different compartments. Solan forest division was divided into four altitudinal ranges i.e. up to 1200 m amsl, 1200-1400 m amsl, 1400-1600 m and above 1600 m amsl and from each altitudinal range twenty compartments of pure stand of Pinus roxburghii was selected randomly. Trees on each compartment was divided into seven diameter classes and data from all selected compartment were subjected to variability analysis in order to test the variability among different altitudinal ranges. Bartlett’s chi-square test for testing the homogeneity of variances suggested that there were significant variation with respect to number of trees and volume per tree among these altitudinal ranges. Maximum number of tree per hectare was observed in 10 - 20 cm diameter class (252.08) in all altitudinal ranges and minimum was observed in 70-80 cm diameter class (0.95). Maximum number of trees per hectare was found in altitudinal range 1200-1400 m amsl (507.32) and minimum in altitudinal range up to 1200 m amsl (211.53). Maximum (1.83 m3) and minimum (1.12 m3) volume per tree were observed in altitudinal range above 1600 m and 1200-1400 m amsl. Regression analysis was performed. Different linear and non-linear regression models were fitted to estimate the volume of chirpine using ordinary least square estimation method. S curve model can be used for the construction of volume table for Solan forest division as well as different altitudinal ranges on the basis of highest R2 value and least root mean square error value.