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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    BookItemOpen Access
    The Green World : Horticulture
    (Chelsea House, New York, 2007) Lang, Gail, M.; Hopkins, William, G.
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    BookItemOpen Access
    Agroforestry: Sytem and Practices
    (Oxford Book Company, Jaipur, 2010) Umarani, Ramesh; Jain, A.K.
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    ThesisItemOpen Access
    Genome Analysis of Indenous Citrus species through AFLP
    (Central Agricultural University, Imphal, College of Horticulture and Forestry, Pasighat, 2011-07-07) Chandra, Vikas; Manivanan, S.; HAzarika, B.N.
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    ThesisItemOpen Access
    Studies on variability components and genetic parameters in Potato (S. Tuberosum L.) under foot hills of Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2011-08-08) Singh, Shiv Mangal; Hazarika, B.N.; Dubey, R K; Singh, Vikas
    Name: Shiv Mangal Singh Registration No. 03(H) M-2009 Sem. And year of Degree: M.Sc. (Horticulture) Admission; 1st, 2009-10 Major: Vegetable Science Chair person: Dr. R. K. Dubey Thesis title: Studies on variability components and genetic parameters in Potato (S. Tuberosum L.) under foot hills of Arunachal Pradesh ABSTRACT The present investigation was conducted during rabi 2010 at Vegetable Research Farm, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh in 20 diverse genotypes of potato. The experiment was laid out in Randomized Block Design with three replications. Genetic variability was studied for characters viz; days to 50% emergence, plant height, number of compound leaves per shoot, leaf area, shoot girth, number of shoot per plant, length of stolon, length of tuber, diameter of tuber, weight of tuber, number of tubers per plant, volume of tuber, specific gravity of tuber, reducing sugar content, dry matter content of tuber and tuber yield per plant. Data were analysed statistically for genotypic and phenotypic variance, coefficient of variation heritability, genetic advance as percent of mean, correlation coefficients and path coefficient. Analysis of variance revealed significant differences among the genotypes for all the characters. The genotypes viz; J/96-238, J/99-48, J/99-227 and Kufri Pukhraj were promising as they have more than one desirable trait. High phenotypic and genotypic coefficients of variation (PCV and GCV), heriatability and genetic advance as percent of mean were observed for reducing sugar content, weight of tuber, diameter of tuber, volume of tuber and specific gravity of tuber, moderate to high phenotypic and genotypic coefficient of variation (PCV and GCV), heritability and genetic advance as percent of mean were observed for tuber yield per plant and length of tuber. Correlation studied indicated that tuber yield per plant was positively and significantly correlated with days to 50% emergence, plant height, length of tuber, weight of tuber, number of tuber per plant and reducing sugar content but negative and significant association was established with specific gravity and dry matter content of tuber. Maximum positive direct effect on tuber yield per plant was imposed by length of tuber,weight of tuber, length of stolon and shoot girth. However, high negative direct effect was observed for diameter of tuber, plant height, volume of tuber, number of compo9und leaves per shoot and dry matter content.
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    ThesisItemOpen Access
    Studies on genetic variability in tomato (Solanum lycopersicum Child) under foot hills of Arunachal Pradesh.
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2011-09-05) Challam, Teibormiki; Singh, Vikas; Singh, Barun
    The present investigation was conducted during Rabi 2010 at Vegetable Research Farm, College of Horticulture and Forestry, Central Agricultural Univesity, Pasighat Arunachal Pradesh in 30 diverse genotypes of tomato. The experiment was laid out in Randomized Block Design with three rerplications. Genetic Variability was studied for characters viz., plant height, day to first flowering, days to 50% flowering, number of clusters per plant, number of fruits per cluster, number ofprimary branches per plant, days to first harvest, days of 50% fruit ripening, polar diameter, equatorial diameter, average fruit weight, percicarp thickness, fruit volume, number of locules per fruits, number of fruits per plant, number of seeds per fruit, acidity, total soluble solids, lycopene content , pH, fruit yield per plant,. Data were analysed statistically for phenotypic and genotypic coefficient of variation, heritability, genetic advance, genetic advance as percentage of mean, correlation coefficient and path coefficient. Analysis of variance revealed significant differences among the genotypes for all the characters. The genotypes viz., CHF-TOM-1, CHF-TOM-2, CHF-TOM-8, CHF-TOM-17, CHF-TOM-19, CHF-TOM-20 and CH-TOM-22 were promising as they had more than one desirable traits. High phenotypic and genotypic coefficient of variation (PCV and GCV), heritability, genetic advance as percentage of mean were observed for average fruit weight, fruit volume, number of fruits per plant, ascorbic acid, lycopene and fruit yield per plant. Correlation studies indicated that fruit yield per plant was positively and significantly correlated with number of fruits per plant, equatorial diameter, fruit volume, number of locules per fruit, total soluble solids, ascorbic acid and pH but negative and significant association was established with days to first flowering, days to 50% flowering, number of clusters per plant, days to first harvest, pericarp thickness and acidity. Maximum positive direct effect on fruit yield per plant was imposed by number of fruits per plant, number of fruits per cluster, average fruit weight, days to first harvest, fruit volume and equatorial diameter. However, high negative direct effect was observed for pericarp thickness, number of primary branches per plant, pH, number of clusters per plant, acidity, number of locules per fruit and ascorbic acid.
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    ThesisItemOpen Access
    Studies Genetic Diversity of Citrus in East Siang District Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2011-12-09) Rabha, Archan; Singh, Barun; Hazarika, B.N.
    Abstract Assessment of variability for yield and its components with the aid of suitable genetic parameters becomme absolutely essential before designing an effective breeding programme. Hence, in the present investigation, an attempt has been made to study the available genetic varialility and to select superior genytypes with the help of suitable genetic parameter in citrus by utilizing 32 genytypes based on 20 important quantitative characterss and 34 qualitative characters. From genetic parameters like genotypc and phenotypic coefficient of variability and genetic advance, it could be concluded that characters like, leaf lamina lenght , leaf lamina width, ratio (leaf lamina length/leaf lamina width), leaf thickness, fruit length, fruit breadth, fruit weight, rind weight , rinn thickness, juice content, number of seeds per fruit, seed weight, seed length, seed breadth, TSS, titrable acidity, vitamin C, reducing sugar, total sugar and fruit yield per tree could be used as selection criteria for development of effective and productive plant types in citrus Narrow differences were oblserved between the values of GCV and PCV for almost all the characters. The highest heritability was recoreded for juice content, fruit length followed by rind thickness. Moreover, on the basis of correlation studies it has been found that, leaf lamina length, leaf lamina width, rind thickness, seed length, frit length , ratio (leaf lamina length/leaf lamina width) were found to be major contributors towards fruit yield per tree. Present study on isozymes revealed a good variability among the genytypes collected. In peroxidase assay, 12 loci and 52 alleles were identified among the 32 genytypes. The relative mobility values (Rm values) of theloci / bands ranges between 0.20 and 0.09.
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    ThesisItemOpen Access
    Studies on genetic variability in turmeric (Curcuma longa L.) under foot hills of Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2012-03-01) Thungan, Sangja Khandu; Hazarika, B.N.; Singh, Vikas
    Analysis of variance revealed significant differences among the genotypes for all the characters. High phenotypic and genotypic coefficient of variation, heritability (broad sense), genetic advance as percentage of mean were observed for weight of secondary rhizome per plant, average weight of secondary rhizome, curcumin content, rhizome yield per plant, average weight of primary rhizome, weight of primary rhizome per plant, number of mother rhizomes per plant, average weight of mother rhizome, number of secondary rhizomes per plant, weight of mother rhizome per plant and number of tillers per plant. Correlation studies reveal that rhizome yield per plant showed positive and significant correlation with weight of secondary rhizome per plant, weight of primary rhizome per plant, crop duration, average weight of secondary rhizome per plant, average weight of mother rhizome and number of mother rhizomes per plant at both genotypic and phenotypic level but negative and significant association was recognized with days of 50% plant emergence, plant height and curcumin content. Maximum positive direct effect on rhizome yield per plant was exerted by weight of secondary rhizome per plant followed by weight of primary and mother rhizomes per plant at both genotypic and phenotypic level. Other characters had negligible direct effect on rhizome yield per plant. The genotypes viz., CHFT-8, CHFT-61, CHFT-22 and CHFT-30 for rhizome yield and Megha Turmiric-1, CHFT-17, CHFT -24 and CHFT -14 for curcumin content were identified promising and to be utilized for turmeric crop improvement programmes.
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    ThesisItemOpen Access
    Stability analysis for tuber yield and its components in Potato (Solanum tuberosum L.)
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2012-11-30) Moyon, Nellisha Ngoruw; Dubey, R.K.; Singh, Vikas
    The present investigation was conducted during rabi 2010 at Vegetable research farm, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh in 10 diverse genotypes of potato. The experiment was laid out in Randomized Block Design with three replications. Genetic variability was studied for characters viz; days to 50% sprouting, plant height, number of shoot per plant, number of compound leaf per shoot, length of leaf, breadth of leaf, length of tuber, diameter of tuber, volume of tuber, weight of tuber, specific gravity of tuber, dry matter content of tuber, number of tuber per plant, and tuber yield per plant. Data were analysed statistically for coefficient of variation, heritability, genetic advance as percent of mean, correlation coefficients, path coefficient and stability analysis. High phenotypic and genotypic coefficients of variation (PCV and GCV), heritability and genetic advance as percent of mean were observed for weight of tuber, diameter of tuber, volume of tuber, specific gravity of tuber and tuber yield per plant. Correlation studies indicated that tuber yield per plant was positively and significantly correlated with days to 50% sprouting, plant height, number of shoot per plant, number of compound leaf per shoot, breadth of leaf, diameter of tuber, volume of tuber and weight of tuber but negatives and significant association was established with dry matter content of tuber. Maximum positive direct effect on tuber yield per plant was imposed by wight of tuber, volume of tuber and number of tuber per plant. However, high negatives direct effect was observed for diameter of tuber and days to 50% sprouting. Stability analysis revealed that the genotypes viz., MS/1-4353 was stable for compound leaf per shoot and length of tuber. Kufri Chandramukhi, Kfri Pukhraj, Kufri Khyati, Kufri Bahar and J/95-227 were stable for volume of tuber. Kufri Chandramukhi and Kufri Ashoka were stable for specific gravity of tuber. Kufri Bahadr and J/95-227 were stable for dry matter content of tuber. On the basis of mean performance of genotypes first environment i.e.26 October date of planting was the most favourable environment.
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    ThesisItemOpen Access
    Studies Genetic Diversity of Citrus in East Siang District Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2012-12-12) Padu, Nyaken; Singh, Vikas; Singh, Barun
    Thesis title: Studies on Genetic Variability in ginger (Gingiber Officinale Rose) under foot hills of Arunachal Pradesh ABSTRACT. The present investigation consisting of 41 diverse genotypes of ginger collected from various parts of country was carried out during 2011-12 at vegetable Farm, Department of Vegetable Science, College of Horticulture and Forestry Pasighat, Arunachal Pradesh . The experiment was laid out in Randomized Complete Block Design with three replication in a plot size of 3x1 m. The recommended spacing (30 cm x 25 cm) and package of practices wee adapted uniformly to all the genotypes Observations were recorded on five randomly tagged plants on each genotype on days to 50% plant emergence, psedudostem height, pseudostem girth, number of tillers per plant, number of leaves per plant, leaf length, leaf breadth, number of days to maturity, spread of rhizome, number of primary rhizomes per plant, weight of primary rhizome per plant, average weight of primary rhizome, number of secondary rhizomes per plant, weight of secondary rhizome per plant average weight of secondary rhizome, number of tertiary rhizome per plant, weight of tertiary rhizomes per plant average weight of tertiary rhizome, dry matter content, crude fibre, oleoresin, essential of oil and rhizome yield pr plant. The data collected over the genotypes and replications were analysed statistically for genotypic variance (02p), phenotypic coefficient of variation (PCV), genotypic coefficient of variation (GCV), heritability (Broad sense), genetic advance as percent of mean (GA), correlation coefficient and path coefficient analysis. Analysis of variance revealed revealed significant differences among the genotypes for all the Characters. High phenotypic and genotypic coefficient of variation, heritability (broad sense), genetic advance as percentage f mean were observe pseudostem height, pseudostem girth, number of leaves per plant, leaf length, number of primary rhizomes per plant, weight of primary rhizomes per plant, average weight of primary rhizome, number of secondary rhizome per plant, average weight of secondary rhizome, number of tertiary rhizome per plant, average weight of tertiary rhizome, crude fibre, oleoresin and essential oil. Correlation studies revealed that rhizome yield per plant showed positive and significant correlation with weight of primary rhizome per plant, weight of secondary rhizome per plant, number of days ot maturity, average weight of primary rhizome, number of secondary rhizomes per plant, pseudostem height, pseudostem girth, number of tertiary rhizomes per plant, dry matter content number of leaves per plant and number of tillers per plant at both genotypic and phenotypic level budt negative and significant association was recognized with average weight of tertiary rhizome, oleoresin and days of 50% plant emergence. Maximum positive direct effect on rhizome yield per plnt was exerted by weight of primary rhizome per plant followed by weight of secondary rhizome per plant at bojth genotypic and phenotypic level. Other character had negligible direct effect on rhizome yield per plant. The genotype CHFGIN-26 and CHFGIN-34 dgave higher rhizome yield per plant as compared to check varieties Nadia whereas, the genotypes CHFGIN-22, CHFGIN-11, CHFGIN-10 and CHFGIN-12 for crude fibre, CHFGIN-33 for oleoresin content and CHFGIN-5, CHFGIN-6, CHFGIN-9 and CHFGIN-23 for essential oil content were identified as promising and to be utilized for ginger crop improvement programmes in future.
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    ThesisItemOpen Access
    Genetic Diversity and Seed protein electrophroresis in Chilli (Casicum Annuum L.)
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2012-12-29) Yatung, Tasso; Dubey, R.K.; Singh, Vikas
    Analysis of variance revealed significant differences among the genotypes for all the characters. The genotypes Viz., CHFC-1, CHFC-7, CHFC-8, CHFC-13, CHFC-14, CHFC-25 and CHF-C26 were promising as they had more that one desirable traits. High PCV and GCV, heritability, gnetic gain were observed for days to first flowering , plant height, number of seed per fruit, number of fruit per plant, ascorbic acid and fruit yield jper plant. Correlation studied indicated that fruit yield per plant was positivsely and significantly correlated with number of branch per plant, number of ffrujit per plant and chlorophyll content but negatives and significant association was established with ascorbic acid content. Maximum positive direct effect on fruit yield per plant was impose by fruit weight, number of fruit per plant, number of seed per fruit and capsaicin content. However, high negatives direct effect was observed for fruit diameter, fruit length, number of primary branch per plant and plant height. Divergence study revealed that capsaicin content contributed maximum percent to diversity followed by ascorbic acid content, chlorophyll content, fruit weight, number of fruit per plant, green fruit yield per plant and fruit length. :Maximum intercluster distance was observed between cluster 2 and 4 and indicated that the genotypes within these were highly divergent. SDP-PAGSE analysis showed considerable variation in band number of protein which ranged from 7-19. Protein banding profile showed that genotypic CHFC11 was grouped with genotypes CHFC-12 and CHFC-13 and genotype CHFC-26 was group0ed with genotypes CHFC-25 and CHFC-27. As per morphological and protein dendrogram chilli genotypes; CHFC-16, CHFC-17 and CHFC-19 and genotypes CHFC-22, CHFC-24 and CHFC-30 were placed in one major cluster. SDS-PAGE marke data provided more sub groupings and revealed higher amount of diversity as compared to morphological data in present study.
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    ThesisItemOpen Access
    Assessment of Genetic Diversity in TARO [Colocasia esculenta(L.) Schott]
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2012-12-31) Supriya Devi, Huidrom; Singh, Vikas; Singh, Barun
    The present investigation consisting of 40 diverse genotypes of Colocasia collected from various part of country was carried out during 2011-12 at vegetable Farm, Department of Vegetable Science, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in Randomized Complete Block design with three replications in a plot size of 2.40 m x 2.25 m. the recommended spacing (60 cm x 40 cm) and package of practices were adapted uniformity to all the genotypes observations were recorded on five randomly tagged plants in each genotype on days to 50% emergence, pseudostem height (cm), number of days to maturity, number of corns per plant, weight of corn per plant (g), average weight of corn (g), number of cornels per plant, weight of cornel per plant (g) , average weight of cornel (g), dry matter content (%), starch content (%), total tuber yield per plant (g). The data collected over the genotypes and replications were analysed statistically for genotypic variance (02g). Phenotypic variance (O2p) phenotypic coefficient of variation (PCV), genotypic coefficient of variation (GCV), heritability (broad sense). Genetic advance as percent of mean (GA), correlation coefficient, path coefficient and generic divergence. Analysis of variance revealed significant differences among the genotypes for all the characters. High phenotypic and genotypic coefficient of variation, heritability (broad sense), genetic advance as percentages of mean were observed for the characters like weight of corn per plant averages weight of cornel, averages weight of corn, tuber yield per plant starch content, number of cornels per plant and weight of cornel per plant correlation studies revealed that tuber yield per plant had positive and significant correlation with number of leaves per plant, pseudostem girth, weight of corn per plant, psedudostem height, averages weight of corn, number of corns per plant number of suckers per plan, weight of cornel per plant, number of cornels per plant and number of days t maturity both at genotypic and phenotypic level suggested that selection based on these traits would ultimately improve the tuber yield per plant path coefficient analysis revealed that weight of corn per plant had maximum positive direct effect on tuber yield per plant followed by weight of cornel per plant at genotypic and phenotypic level. Mahalanobis D2 statistic indicated considerable diversity and all the 40 genotypes were grouped into seven clusters. The cluster I was the largest with20 genotypes followed by cluster III with 8 genotypes, cluster IV with 5 genotypes and cluster V with 4 genotypes. Remaining clusters viz, II,VI and VII were solitary. There was no relationship between II and VII, indicating maximum divergence among genotypes. The highest intra cluster distance was recorded for cluster V. Six characters viz. Starch content, weight of corn pr plant, days to 50% plant emergence, dry matter content, average weight of cornel and weight of cornel per plant were the chief character contributed towards diversity. Cluster means analysis and inter cluster distance suggested crosses can be made involving the selected dgenotype(s) under cluster II (CHFCOL-34),cluster VI (CHFCOL-36) and Cluster V (CHFCOL-2) with genotype under cluster VII (CHFCOL-4) to obtain high heterotic crosses and superior segregates. The genotypes viz, CHFCOL-1 (cluster III) and CHFCOL-4 (cluster VII) were found to be superior and are worth enough for advanced yield traits for future release.
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    ThesisItemOpen Access
    Standardization of Leaf Nutrient Status for Khasi Mandrin (Citrus reticuleta Blanco.)
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2013-03-08) Jongkey, Onam; Hazarika, B. N.
    Maximum positive yield for both the investigating years was recorded in the Orchards no.4,5,6, 9, 12, 14 and 15 which also recorded fruits with large fruit size, more amount of juicy fruit, more fruits per tree and reflects more yield per tree. Based on the values of the yield and quality parameters, however the fruits of orchard no. 4, 5 and 6 recorded better results. Correlation studies indicated that fruit yield and quality parameters were positively and significantly correlated with leaf N, K, and Ca content. Other elements like Mg, S, Mn, Zn, Cu and Fe are having moderately positive effect on the fruit yield and quality parameters on both the years. Hence, leaf nutrient values of these orchards can be fixed as the range of optimum leaf nutrient status for the khasi Mandrin. Even though a range givsen for all the elements., the elements which are having positive influence can be fixed as the primary basis for arriving at nutrient status. Accordingly, N (2.64-2.89 %), Ca (1.00-2.12 % ) values in the range itself can be fixed as they are not influencing much on the yield and quality.
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    ThesisItemOpen Access
    Effect of Pruning Severity and Spray of Urea on Growth Flowering and Fruiting of Guava (Psidium Guajava) CV.L-49
    (Central Agricultural University, Imphal, College of Horticulture and Forestry, Pasighat, 2013-03-14) Eko, Rebecca; Singh, Barun; HAzarika, B.N.
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    ThesisItemOpen Access
    Studies on genetic variability in Snapmelon (Cucumis melo L. Var momordica ) through physic-chemical traits and seed protein profiling
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2013-04-04) Muddarsu, Venkta Raman; Singh, Vikas; Hazarika, B.N.
    Analysis of variance revealed significant differences among the genotypes for all the attributes. The genotypes CHFSM-5, CHFSM-10 CHFSM-11 and CHFSM-15 were found to be superior for the most of the yield components and fruit quality traits. High PCVB and GCV, heritability, genetic gain were observed for Days to 50% germination, fruit length, fruit weight, flesh thickness, number of fruit per plant, number of seed per fruit, TSS, ascorbic acid, titrable acidity and fruit yield per plant. Correlation studies indicated that fruit yield pr plant was positively and significantly correlated with vine length, nmbser of primary branches per vine, fruit length, fruit diameter, fruit weight, flesh thickness numnbse of fruits per plant, and number of seed per fruit however negative and significant association was established with TSS and titrable acidity. Maximum positive direct effect on fruit yield per plant was implosed ty TSS, number of seed per fruit, flesh thickness, fruit weight and fruit length which were observed as the most important traits affecting fruit yield per plant, However, high negative direct effect was observed for days to first staminate flower anthesis, number of fruits per plants, and days to first pistilate flower anthesis. Divergence study revealed that ascorbic acid content contributed maximum percent to diversity followed by titrabble acidity, fruit yield per plant, number of seed per fruit, and TSS. Maximum inter cluster distance was observed between cluster 4 and 5 and indicated that the genotypes within these were highly divergent. SDS-PAGE analysis showed a total of 54 bands identified by coomassie brilliant blue staining. The genotypes exhibited considerable variation in protein band number ranging from 19-31. Among the genotypes CHFSM-1 and CHFSM-8 showed maximum number (31) of protein bands while the minimum numbers (19) of bands were present in CHFSM-2, CHFSM-11, CHFSM-12 and CHFSM-17.
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    ThesisItemOpen Access
    Effect of Micronutrient on the growth, yield and quality of Banana (Musa sp.)cv. Grand Naine (AAA)
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2013-06-07) Rinchhani, Lalrinchhani; Hazarika, B.N.; Wangchu, L.
    The present investigation was carried out in March 2011 – February 2012 conducted in the experimental Farm, at Fruit Research Farm, Department of Fruit Science, College of Horticulture and Forestry, Central Agricultural University, Paighat, Arunachal Pradesh. The experiment was laid out in Randomized Block Design with nine treatments and three replications. Nine plants for each treatments in a plot were tagged for recording various observation. Uniform cultural practices were given in each treatment. The following treatments were imposed 3.5 and 7 months after planting. T1 control, T2 Foliar spray of ZnSO4 (0.5%), T3 Floliar spray of FeSO4 (0.2%). T4 Foliar spray of CuSO4 (0.2%). T5 Foliar spray of H3BO3 (0.1%). T6 combination of foliar spray of H2BO3 (0.1%) and CuSO4 (0.2%). T7 Combination of foliar spray of ZnSO4 (0.5%) and FeSO4 (0.2%). T 8 Combination of foliar sprays of ZnSO4 (0.5%), FeSO4 (0.2%) and H3BO3 ((0.1%). All the treatments except control were effective in increasing yield, quality and growth. The highest pseudostem height (231.71cm) was observed in T81 while girth (72.85CM), leaf area (12.76m2) and leaf areas index (5.34) were highest in T9. Maximum increase in production of fruits (50.75 t/ha) was recorded in treatment T9 while yield was minimum (33.03t/ha) in T1 control. Better growth and yield were observed in combination of the treatments. The fruit quality in term of TSS,rerducing sugar, total sugar, non-reducing sugar and ascorbic acid were found significant but titrable acidity, pulp-peel ratio and sugar-acid ratio were found to be non significant. The higher results were obtained in T9 (26.15’Brix) for TSS,. T8 (6.61%) for reducing sugar, T9 (17.73%) for total sugar, T9 (11.13%) for non-reducing sugar and T9 (7.23mg/100g) for ascorbic acid. The highest cost benefit ratio was observed in T9 (1:2.72) Hence, the treatment T9 Combination of Foliar spray of ZnSO4 (0.5%), FeSO4((0.2%) and H3BO3 (0.1%) was considered the best treatment among all the other treatment in attaining better growth, quality and yield of fruits.
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    ThesisItemOpen Access
    Effect of Season, Shoot Etiolation and Growth Regulators in Air-layering of guava (Psidium guajava) var. L-49.
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2013-10-17) Taki, Ponung; Wangchu, L.; Hazarika, B.N.
    The experiment was laid out in Completely Randomized Design (CRD) with three factors i.e. Month, Shoot and PGR, with 4 levels in month, 2 levels in shoot and 5 levels in PGR, with three replications of each level. The PGR treatments were IBA (20000 ppm), NAA (20000ppm), IBA+ MNAA (1000 ppm= 1000ppm), Paclobutrazol (500ppm) and control. The air layers with treatment T3 (IBA 10000 ppm+ NAA 10000ppm) gave maximum number of primary roots (24.33) in June and July on the etiolated and non etiolated shoots in July, maximum number of secondary roots (144) was recorded with T1 (IBA 20000ppm ) on the non etiolated shoot in the month of July, maximum root length (18.5 cm) was recorded with the treatment T1 (IBA 20000 ppm) on the non etiolated shoots, maximum fresh root weight (5.8 g) was observed during the month of July on the non etiolated shoots prepared with treatment T1 (IBA 20000 ppm), while maximum dry weight (0.23 g) of roots was observed in treatment T3 (IBA 10000ppm =NAA 10000 ppm) on the etiolated shoots during June. Average root length was found to be maximum in July on the non etiolated shoots with treatment T1 (IBA 10000 ppm), maximum number of roots per layers (170.66) was observed during July on non etiolated shoots with treatment T1 (IBA 20000 ppm), maximum diameter of primary roots (2.48) was recorded on the etiolated shoots during the month of July with treatment T1 (IBA 20000 ppm) while diameter of secondary roots was maximum (0.84) with treatment T2 (NAA 20000ppm), on the etiolated shoots during the month of June. Hence the treatment T1 (20000 ppm) and T3 (IBA 10000 ppm +NAA 10000 ppm) during the month of June on the etiolated shoots was the best treatment for getting maximum rooting and survival percent.
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    ThesisItemOpen Access
    Stability analysis for yield and its components in turmeric (Curcuma longa L.)
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2013-10-18) Arambam, Sneha Devi; Singh, Vikas; Hazarika, B.N.
    Analysis of variance revealed significant differences among the genotypes for all the traits in all four environments and also for pooled data over the environments. High to moderate phenotypic and genotypic coefficients of variation, eritability and genetic advance as percent of mean were observed for number of leaf per plant, number of rhizome per plant, curcumin content, cured rhizome yield per plant and fresh rhizome per plant in all four environments and also for pooled data over the environments. Correlation studies revealed that fresh rhizome yield per plnat had positives and significant correlation with pseudostem height, number of tiller per plantl number of leaf per plant, leaf area, number of rhizome per plant and cured rhizome yield per plant at both genotypic and phenotypic level in all four environments and also for pooled data over the environments but negative and significant association was recognized with days to 50% sprouting, pseudostem girth dand dry recovery in most of the environments. The pooled analysis of variance revealed significance differences among the genotypes for most of the characters except pseudostem girth and number o tiller per plant. Variance due to environments was significant for most of the characters except pseudostem girth, leaf area and dry recovery. Variance due to G x E was significant for all the characters. Environment linear component was significant for most of the traits except leaf area and dry recovery, where as G x E (linear) interaction was no-significant for all the characters. The non linear component (pooled deviation) was significant for all the dtraits which indicated the performance of the genotypes is unpredictable. The stability analysis for fresh rhizome yield per plant revealed that he genotypes CHFT-30, CHFT-36, RH-50, RH-9/90 and Plnat Pitabh were stable and ideal across the environments. The genotypes CHFT-30 and Plant Pitabh were found to bse specially adapted to favourable environment for curcumin content, while the genotyopes TCP-129, RH-13/90 and Megha Turmeric-1 were suited for all environments with unpredictable performance for this trait. On the basis of mean performance of genotypes first environment (E1) i.e. 25th April 2012 date of planting was the most favourable environment for the better expression of fresh rhizome yield per plant and most of thse traits viz., pseudostem height, number of tiller per plant, number of leaf per plant, days to maturity, curcumin content and cured rhizome yield per plant.
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    Handbook of Library and Information Services : For Agriculture Science Students
    (Astral Publishers, a division of Daya Publishing House , Daryaganj , New Delhi, 2014) Singh, Rajkumar