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M. Sc. Dissertations

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2010 - 20122
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Subject: Forestry × End date: 2012 × Start date: 2010 × Type: Thesis ×
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    ThesisItemOpen Access
    Studies on breeding of Common carp (Cyprinus carpio Lin.) using modified breeding technique
    (CCSHAU, 2010) Verma, Nitin; Gupta, R.K.
    Common carp (Cyprinus carpio) is one among the earliest species to be cultured. Its maturation and breeding is affected by biotic and abiotic environmental conditions of water. Nutrition is known to have profound effect upon gonadal growth as well as larval development. Common carp breeding is still very traditional in India, including Haryana.Quantity of common carp seed which is available is needed to be most economic and technique should be such that the resources are utilized most efficiently to meet the demand of farmers and entrepreneurs. The field experiment was designed under four sets of pond with three replicates and one controlled experimental pond. Fish weight, length, gonad weight, Gonado somatic index and fecundity were estimated for observing maturity of fishes. The effect of nutritious feed and environmental conditions on fertilization, hatching and survival of larvae were also studied. In the field experiment wide range of seasonal fluctuations were observed in the following factors. Water temperature showed a range of 9-28.5°C throughout the experiment. There was not much fluctuation in all the experimental pools. Conductivity values for different experimental pools were different and minimum value was recorded during onset of winter season. The pH values were found to range between 5.2 -7.3. During initial stages the pH value were lower and showed a gradual increase in the later stages. The variation in DO values ranged from 4.2-7.28 mg/l in different experimental ponds. DO content increased with higher production of photosynthetic organisms. Free CO2 varied between 0.03-6 mg/l. On cloudy day maximum free CO2 content was found initially because of more concentration of phytoplankton. Pattern of changes in both carbonate and bicarbonate alkalinities in different experimental sets were more or less similar. The carbonate alkalinity was observed to show a reverse trend to that of free CO2. It ranged between 0-5.6 mg/l. Bicarbonate alkalinity ranged from 86 to 124 mg/l in all experimental pools during the experiment. The BOD was higher initially. The value ranged between 0.48-8.96 mg/l. Some fluctuation is found in Hardness ranged between 156-189.7 ppm. Plankton volume ranged between 0.015- 0.018 cc/l in different experimental sets. Highest plankton volume was recorded in 1st week of February. The Gross primary productivity value was found to be low during clouds and rain. Fertilization, hatching and fry produced were also observed and found to be highest in the hatchlings produced from 6:1 male to female ratio. The highest growth was observed in hatchlings that were fed on rice bran & mustard oil cake in 1:1@150% of initial body weight.
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    ThesisItemOpen Access
    Studies on growth potential, market trend and wood volume tables of poplar (Populus deltoides) grown in Haryana
    (CCSHAU, 2012) Doha, Amit Singh; Bangarwa, K. S.
    The present investigation entitled “Studies on growth potential, market trend and wood volume tables of poplar (Populus deltoides) grown in Haryana” was carried out in the Yamunanagar district of Haryana, India. One to 6 years old plantations of poplar (G 48) with spacing’s of 5×4 m, 4×4 m, 6×3 m were selected for recording data in order to find out growth potential (height and DBH). Current annual increment for basal diameter was observed highest in 5 × 4 m spacing during all the six years as well as on the overall basis. The current annual increment for total height were in increasing order up to 4th year in all the three spacing as well as on overall basis. The rate of growth for total height was in decreasing order from 4th year to 6th year in all the three spacing. Ninety one randomly selected trees were sampled to predict the weight and volume table for poplar tree. Four equations were fitted using linear and non linear regression techniques to predict the volume table. Two models (Schumacher and Hall and single-entry) were used to predict the green timber weight. Results were statistically and graphically analyzed. All equations had very good-fit statistics. The Schumacher and Hall model was selected to estimate the volume of standing poplar trees in Haryana. It is not always easy to measure total height of each standing tree, which is both time consuming and cumbersome. Therefore, regression equation of timber volume based on DBH alone was also worked out. Survey of Yamunanagar market was conducted to find out prices of four types of poplar wood pieces. Prices of all the four types of poplar wood pieces for the last four years were recorded from randomly selected ten poplar wood purchasing units. Market survey for poplar wood suggests increasing trend from 2004 for all the four categories (over, under, sokta and dandi). The increase in poplar wood price for the last 3 years was comparatively low.