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Central Agricultural University, Pasighat

The Central Agricultural University has been established by an act of Parliament, the Central Agricultural University Act, 1992 (No.40 of 1992). The Act came into effect on 26th January, 1993 with the issue of notification by the Department of Agricultural Research and Education (DARE), Govt. of India. The University became functional with the joining of first Vice-Chancellor on 13th September, 1993. The jurisdiction of the University extends to six North-Eastern Hill States viz., Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Sikkim and Tripura, with headquarters at Imphal in Manipur. College of Horticulture & Forestry, a constituent College of the Central Agricultural University, Imphal, Manipur, was established on 7th March 2001 at Pasighat, Arunachal Pradesh on the bank of beautiful river Siang.

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2018 - 20193
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Subject: Forestry × End date: 2019 × Thesis Type: M.Sc ×
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Now showing 1 - 3 of 3
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    ThesisItemOpen Access
    Carbon sequestration potential of Different land use System under East Siang District, Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-02-19) Mihriemate, Royal L.; Singh, Bikram; Mehra, T. S.
    The present investigation were carried out in Pasighat Forest Division of East Siang District (Aruanchal prdesh) . The experiment was laid out in split plot design using six land use system (T), three soil layers (L) and replicated thrice. The six landuse system were natural grassland (T1) natural forest (T2). The soil sample were collected from three depth of soil layers viz, 0-15 cm (L1). 15-30cm (L2) , 30-45cm (L3). The plot size of each landuse system was 50m x 10m except for natural grassland and agriculdture field where the plot size was 1m-1m quadrates. The plant attributet such as above ground biomass, below ground biomass and total biomass were determined while the soil attributes viz., bulk density, particle density, porosity, pH, organic carbon and organic matter were also determined and they were used to estimate the plant carbon stock soil carbon stock and total carbon stock..
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    ThesisItemOpen Access
    Distribution mapping and characterization of fruit parameters of Phoebe cooperianaU.N Kanjilal ex A. Das in Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-03-01) Dolley, Narang; Lyngdoh, Nicolee; Tayeng, Tisu
    A study was carried out during 2016-18 to map the distribution pattern and to characterize the variation of fruit parameters of Phoebe cooperiana, an economically important fruit yielding tree of Arunachal Pradesh, India.Primary data points were used to generate distribution map of the species by employing ecological niche modeling (ENM) based Maxent and Diva-GIS software’s.Variations in morphological characters and(anti-)nutritional compositions wereanalyzedfor the fruits from 14 different sites across the state. A total of twenty nine fruit parameters were studied which included nine morphological, fifteen nutritional, four anti-nutritional and one anti oxidizing property. The experiment was carried out inCRD(Completely Randomized Design) with four replications for morphological characters and three replications for biochemical parameters. Data were subjected to ANOVA,correlation studies,PCA(principal component analysis) and CA(clustering analysis). Potential distribution areas were distributed across the state in patches forming concentric rings. Areas of high suitability index were found at the center and suitability index decreasesoutwards thus forming an “abundant center” in the middle.A total area of 13,433 km2was indicated to be suitable niche for the species across the state. The area with highly suitability index accounted for 1563 km2, moderate suitability class covered about 4226 km2and area under low suitability class at the outer periphery covered the area of 7644 km2. Mean value for various morphological traits were found to be as follows; fruit weight (9.39 ± 0.23 g), fruit length (34.07 ± 0.45 mm), fruit diameter (23.79 ± 0.35 mm), seed weight(3.73 ± 0.10 g), seed length (15.73 ± 0.28 mm), seed diameter (13.86 ± 0.24 mm), pulp weight (5.65 ± 0.15 g), pulp thickness (8.93 ± 0.16 mm) and pulp-fruit ratio (0.60 ± 0.01). Mean values for (anti-)nutritional composition wereas follows; total carbohydrate(6.84 ± 0.09 %), reducing sugar(1.59 ± 0.03 g/100g), starch (37.76 ± 0.52 mg/100g), cellulose (9.40 ± 0.15 mg/100g),pectin (2.10 ± 0.03 %.), crude fiber (8.7 ± 0.12 %),free fatty acid (12.70 ± 0.21 mg KOH/g),crude protein (8.00 ± 0.11 %),total free amino acid (5.71 ± 0.08 mg/100g), ascorbic acid (2.46 ± 0.04 mg/100g), vitamin E (5.82 ± 0.03 mg/100g), vitamin A (2.35 mg/100g), total chlorophyll (15.09 ± 0.24 mg/100g),chlorophyll a (7.08 ± 0.13 mg/100g), chlorophyll b (7.31 ± 0.11 mg/100g), cyanogen (32.73 ± 0.47 mg/100g),phytic acid (10.67 ± 0.19 mg/100g),phenols (22.19 ± 0.33 mg/g), tannin (165.04 ± 3.00 mg/100g) and DPPH radical-scavenging activity(56.94 ± 0.96 %). Analysis of variance revealed significant differences among the sites for all the characters studied.Correlationstudy revealed that fruit weight had significant positive association with most of morphological characters and starch content. Higher edible portion can be obtained from larger fruits with smaller seed size.Fruits from lower altitude sites hadhigher pulp-fruits ratio and reducing sugar while, sites from western part of state had higher seed weight and seed diameter.The combined principal component analysis for morphological and biochemical characters showed that fruit weight, fruit diameter, fruit length and chlorophyll contributedhighest to the variation. Clustering showed that the sitesJia, Aalo, Baririjo, Daporijo, Sagalee and Yazali to be most distantly related to each other and also high desirable characters were observed in these sites. So, these sites can be targeted for future improvement programme and domestication trials of the species.
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    ThesisItemOpen Access
    Standardisation of nursery techniques and performance of Michelia champaca Linn. under Eastern Himalayas.
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2018-08-28) Rinaldi, Nepuni; Singh, Bikram; Lyngdoh, Nikolee
    The effects of different seed germination and nursery techniques for Michelia champaca Linn. were investigated in this study and was carried out in the laboratory and research field of Department of Silviculture and Agroforestry, College of Horticulture and Forestry, Pasighat, Arunachal Pradesh in the year 2016-2018. The experiment in laboratory and field condition for seed was carried out in Complete Randomized Design with 14 treatments which were replicated 4 times. The treatments include,T1- Control (seed with ariel), T2-Seed without ariel, T3- Soaking in ambient water for 24 hours, T4-Soaking in luke warm water for 24 hours, T5- Dipping in hydrogen peroxide (H2O2-2%) overnight, T6- Dipping in hydrogen peroxide (H2O2-4%) overnight, T7- Dipping in hydrogen peroxide (H2O2-6%) overnight, T8-Soaking in 20% Nitric acid (20% HNO3) for 15 minutes,T9- Soaking in 30% Nitric acid (30% HNO3) 10 minutes, T10- Seed chilled at 0˚C for 24 hours, T11- Soaking in gibberellic acid 200 ppm overnight, T12- Soaking in gibberellic acid 500 ppm overnight, T13- Soaking in gibberellic acid 1000 ppm overnight and T14- Soaking in gibberellic acid 500 ppm for 24 hours followed by soaking in hydrogen peroxide (4%) for 24 hours. Results show that highest germination percentage in lab (43.8%) and field (43.75%) was recorded in T14 and germination value in lab (1.24 %) and field (1.22 %) was recorded in T14 and T6 respectively. The viability percentage of the seeds based on cutting test was observed to be 51.2% and this may be correlated with the highest germination percentage recorded in T14. Different nursery techniques on Michelia champaca were analysed. Field experiment was carried out in Randomized Block Design with 3 replications. The treatment details of planting stocks include, T1- Control (in transplanting bed), T2-Control (under polybag), T3- Hikotrays, T4¬¬- Undercutting, T5- Undercutting and wrenching (1 times), T6- Undercutting and wrenching (2 times), T7- Undercutting and wrenching (4 times), T8- Base cutting, T9- Lime application, T10- Copper hydroxide, T11- Copper sulphate and T12- Copper chloride. Based on the field observations, the growth performance in research field (height, collar diameter, number of leaves and number of branches) recorded highest height in T9 (lime application) and collar diameter in T5 (undercutting and one time wrenching), the highest number of leaves was recorded in T1 (control in bed) and the highest number of branches was also recorded in T1 (control in bed) followed by T9 indicating that lime application also yield satisfactory results. The outplanting survival percentage was highest in T10 (100%) i.e. Copper hydroxide treatment, which was at par with T7 (94.44%) i.e., Undercutting and wrenching (4 times) followed by T8 (94.44 %) i.e., Base cutting. In conclusion, cutting test is a reliable method for determining the seed viability in Michelia champaca. Copper hydroxide treatment, Base cutting (2.5 cm) of polybag seedling, undercutting and wrenching is a successful contribution in improving the outplanting survival of plants.