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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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ThesisItem Open Access Integrated nutrient management studies on growth, yield and quality of cucumber (Cucumis sativus L.) under protected condition(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-07-10) kHARGA, SUDESHNA; SARMA, P.; Warade, S. D.The aforementioned experiment was conducted at College of Horticulture and Forestry, CAU, Pasighat, Arunachal Pradesh to study the influence of integrated nutrient management on growth, yield and quality of cucumber (Cucumis sativus L.) under protected condition. It was laid out in Randomized Block Design comprising of thirteen treatments replicated thrice. The experiment was carried out under the protected condition using a suitable cucumber hybrid during the off season. Suitable gynoecious hybrid variety (KSP-1301) was procured from Kalash Seed Pvt. Ltd., Jalna for this experiment. The treatment details are T1 (RDF of NPK @ 150:120:120 kg/ha + FYM @ 15 t/ha), T2 (75% of RDF of NPK + FYM @ 20 t/ha), T3 (75% of RDF of NPK + FYM @ 15 t/ha + Azotobacter @ 5 kg/ha), T4 (75% of RDF of NPK + FYM @ 10 t/ha + Azotobacter @ 5 kg/ha + PSB @ 5 kg/ha), T5 (75% of RDF of NPK + vermicompost @ 7.5 t/ha), T6 (75% of RDF of NPK + vermicompost @ 5 t/ha + Azotobacter @ 5 kg/ha), T7 (75% of RDF of NPK + vermicompost @ 2.5 t/ha + Azotobacter @ 5 kg/ha + PSB @ 5 kg/ha), T8 (50% of RDF of NPK + FYM @ 30 t/ha), T9 (50% of RDF of NPK + FYM @ 25 t/ha + Azotobacter @ 5 kg/ha), T10 (50% of RDF of NPK + FYM @ 20 t/ha + Azotobacter @ 5 kg/ha + PSB @ 5 kg/ha), T11 (50% of RDF of NPK + vermicompost @ 10 t/ha), T12 (50% of RDF of NPK + vermicompost @ 7.5 t/ha + Azotobacter @ 5 kg/ha) and T13 (50% of RDF of NPK + vermicompost @ 5 t/ha + Azotobacter @ 5 kg/ha + PSB @ 5 kg/ha). Integration of inorganic fertilizers, organic manures and biofertilizers has increased the efficacy of the nutrients in the soil. Integration of vermicompost with inorganic fertilizers and microbial inoculants has efficiently contributed in mineralisation of unavailable forms of nutrient to the available form. The results revealed that the vines of cucumber fertilized with T5 (75% of RDF of NPK + vermicompost @ 7.5 t/ha) recorded maximum vine length (190.26 cm), number of branches per plant (12.97) and internodal length (13.86 cm). However, the superior response in terms of flowering and the yield attributing parameters like minimum days to 50% flowering (34.01), minimum days to 50% fruiting (45.01), fruit length (16.20 cm), fruit breadth (4.21 cm), fruit girth (13.18 cm), fruit weight (197.39 g), yield of fruits per vine (1.75 kg), yield of fruits per plot (12.43 kg), number of fruits per vine (10.81), number of fruits per plot (91.51) and total yield (287.89 q/ha) was recorded from T13 (50% of RDF of NPK + vermicompost @ 5 t/ha + Azotobacter @ 5 kg/ha + PSB @ 5 kg/ha). Likewise, superior quality attributes like highest TSS (3.560 °Brix), lowest acidity (0.220%), total carbohydrate (1.140%) and total chlorophyll content (0.530 mg/g) with minimum physiological loss in weight (both shrink wrapped and unwrapped condition) was also witnessed from T13. Maximum shelf life was exhibited by the fruits harvested from T13. The post experimentation analysis of the soil revealed that the maximum amount of available NPK (319.88 kg/ha, 40.05 kg/ha, 261.36 kg/ha respectively) and organic carbon content of 2.33% was recorded from the experimental units fertilized with T13.ThesisItem Open Access Effect of organic manures and biofertilizers on growth, yield and quality of edible podded pea (Pisum sativum var. macrocarpon) var. Arka Apoorva(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-07-11) BHUTIA, PEKILA; ANAL, Marium Ps; Sarma, P.The experiments were carried out in Randomised Block Design replicated thrice comprising with 14 treatments under sandy loam condition. The experiments were carried out in Randomised Block Design replicated thrice with 14 treatments under sandy loam condition. The treatment details were T1 (FYM @ 10 t/ha + Rhizobium + PSB), T2(PM @ 5 t/ha + Rhizobium + PSB) , T3 (VBM @ 5 t/ha + Rhizobium + PSB), T4 (VC @ 5 t/ha + Rhizobium + PSB), T5(FYM @ 10 t/ha + Rhizobium + PSB + Wood ash @ 0.5 t/ha), T6 (PM @ 5 t/ha + Rhizobium + PSB + Wood ash @ 0.5 t/ha),T7 (VBM @ 5t/ha + Rhizobium + PSB + Wood ash @ 0.5 t/ha), T8 (VC @ 5 t/ha + Rhizobium + PSB + Wood ash @ 0.5 t/ha),T9 (FYM @ 10 t/ha,T10 (PM @ 5 t/ha), T11 (VBM @ 5 t/ha),T12 (VC @ 5 t/ha), T13 (Wood ash @ 0.5 t/ha), T14 (Control). Incorporation of organic manures along with biofertilizers and wood ash increased the growth, yield, quality and nutrient content of edible podded pea. The result revealed that the application of vermi bonemeal, rhizobium, PSB and wood ash (T7) showed significantly higher plant height ,root length, fresh and dry shoot and root weight (g),no. of pods/plant, pod length, pod weight/plant, pod yield/ha, crude protein, reducing sugar, and total carbohydrates. The minimum days taken to 50% flowering and fruiting as well node at which first flowering was recorded in T7.The postharvest available soil N was found higher in T8 whereas P and K were recorded maximum in T7. Plant N content was highest in T6 whereas, P and K were exhibited maximum in T7. The highest net income and B:C ratio were achieved with the treatment T7. The present investigation revealed that edible podded pea var. Arka Apoorva may be grown in pasighat condition with the combined application of vermi bonemeal, rhizobium, phosphate solubilising bacteria and wood ash for higher yield, quality and economic return.ThesisItem Open Access Effect of spacing and nutrient management on king chilli (Capsicum chinense Jacq.) grown under protected condition(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-07-24) Shimray, Akhoki G.; Sarma, P.; Anal, Mariam PsThe experiment entitled “Effect of Spacing and Nutrient Management on King Chilli (Capsicum chinense Jacq.) grown under Protected Condition” was carried out during the year 2017-2018 under polyhouse at College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. Nine treatments with two factors (spacing and Nutrient) i.e. 3 spacing levels S1 (60 cm x 60 cm), S2 (60 cm x 75 cm), S3 (60 cm x 90 cm) and 3 nutrient levels N1 (90:45:45 kg NPK/ha + 20 t FYM/ha), N2 (120:60:60 kg NPK/ha +15 t FYM/ha) and N3 (150:75:75 kg NPK/ha + 10 t FYM/ha) were arranged in factorial RBD design, in order to study the effect of various spacing and nutrient level on growth, yield and quality of king chilli under protected condition. The plants grown in lowest spacing level S1 obtained the maximum plant height (205.73 cm), highest number of leaves/plant (1125.29), least number of days to flower initiation and fruiting, longest fruit length (73.16 mm), fruit girth (106.11 mm) and fruit weight (8.25 g). While the highest number of fruit/plant (175.72), fruit yield/plant (1.35 kg), Ascorbic acid (84.88 mg/100g) and capsaicin content (2.95%) were obtained from those plants grown in widest spacing level S3. The nutrient level N3 resulted highest plant growth parameters, fruit weight (8.52 g), number of fruits/plant (142.53), fruit yield/plant (1.13 kg), Ascorbic acid (80.24 mg/100g) and capsaicin content (3.02%). Thus, among the various treatment, the highest plant height and number of leaves was obtained in T3 and the least number of days required to first flowering and fruiting, 50% flowering and fruiting days to red ripe maturity, maximum fruit length and girth was obtained in T1. While maximum number of fruits 185.13/plant, fruit yield 1.45 kg/plant and quality parameters such as 88.53 mg/100g vitamin-C, capsaicin 3.11% and dry matter content of 10.29% with highest benefit cost ratio of 2.59 was obtained from T9 i.e. 60 cm x 90 cm + 150:75:75 kg NPK/ha + 10 t FYM/ha.ThesisItem Open Access Studies on genetic variability, heritability and genetic advance in brinjal (Solanum melongena L.) genotypes.(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-07-25) Tasing, Kalom; Deo, Chandra; Sarma, P.The present investigation was conducted during May-October 2018 at Vegetable Research Farm, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh with 20 diverse genotypes of brinjal. The experiment was laid out in Randomized Block Design with three replications. Genetic variability was studied for characters viz., plant height (cm), number of primary branches per plant, days to 50% flowering, days to 50% fruit set, days to 1st harvesting, number of fruits per plant, fruit weight (g), fruit length (cm), fruit girth (cm), number of flower per cluster, number of fruit per cluster, fruit yield per plant (kg), solasodine content (mg/100 g fruit), phenols content (mg/100 g), total sugar content (mg/100g), reducing sugar (mg/100g), non-reducing sugar (mg/100g), anthocyanin content (mg/100g) and flavonoid content (mg/100g). Data were analyzed statistically for phenotypic and genotypic variance, coefficient of variation, heritability, genetic advance, genetic gain, correlation coefficient, path coefficient and genetic divergence. Analysis of variance revealed significant differences among the genotypes for all the characters. High PCV and GCV, heritability, genetic advance and genetic advance as % of mean were reported for parameters like number of fruit per cluster, fruit weight (g), plant height (cm), fruit length (cm), fruit girth (cm), reducing sugar (mg/100g), fruit yield per plant (kg), non-reducing sugar (mg/100g), number of primary branches and total sugar content (mg/100g). Correlation studies indicated that fruit yield per plant was positively and significantly correlated with fruit weight, fruit length and fruit girth but negative and significant association was established with days to 50% flowering, days to 1st harvesting and number of fruits per plant. Maximum positive direct effect on fruit yield per plant was imposed by number of primary branches per plant followed by fruit length, phenols content, days to 50% flowering, number of fruits per plant, solasodine content, fruit girth, reducing sugar and fruit weight. However, high negative direct effect was observed for plant height, days to 1st harvesting at genotypic level. Divergence study revealed fruit yield per plant (kg) contributed maximum percent to diversity followed by number of fruit per cluster, plant height and flavonoid content (mg/100g). Maximum inter cluster distance was observed between cluster III and V and indicated that the genotypes within these were highly divergent.ThesisItem Open Access Studies on genetic variability, heritability and genetic advance in brinjal (Solanum melongena L.) genotypes(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-07-25) Tasing, Kalom; Deo, Chandra; Sarma, P.The present investigation was conducted during May-October 2018 at Vegetable Research Farm, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh with 20 diverse genotypes of brinjal. The experiment was laid out in Randomized Block Design with three replications. Genetic variability was studied for characters viz., plant height (cm), number of primary branches per plant, days to 50% flowering, days to 50% fruit set, days to 1st harvesting, number of fruits per plant, fruit weight (g), fruit length (cm), fruit girth (cm), number of flower per cluster, number of fruit per cluster, fruit yield per plant (kg), solasodine content (mg/100 g fruit), phenols content (mg/100 g), total sugar content (mg/100g), reducing sugar (mg/100g), non-reducing sugar (mg/100g), anthocyanin content (mg/100g) and flavonoid content (mg/100g). Data were analyzed statistically for phenotypic and genotypic variance, coefficient of variation, heritability, genetic advance, genetic gain, correlation coefficient, path coefficient and genetic divergence. Analysis of variance revealed significant differences among the genotypes for all the characters. High PCV and GCV, heritability, genetic advance and genetic advance as % of mean were reported for parameters like number of fruit per cluster, fruit weight (g), plant height (cm), fruit length (cm), fruit girth (cm), reducing sugar (mg/100g), fruit yield per plant (kg), non-reducing sugar (mg/100g), number of primary branches and total sugar content (mg/100g). Correlation studies indicated that fruit yield per plant was positively and significantly correlated with fruit weight, fruit length and fruit girth but negative and significant association was established with days to 50% flowering, days to 1st harvesting and number of fruits per plant. Maximum positive direct effect on fruit yield per plant was imposed by number of primary branches per plant followed by fruit length, phenols content, days to 50% flowering, number of fruits per plant, solasodine content, fruit girth, reducing sugar and fruit weight. However, high negative direct effect was observed for plant height, days to 1st harvesting at genotypic level. Divergence study revealed fruit yield per plant (kg) contributed maximum percent to diversity followed by number of fruit per cluster, plant height and flavonoid content (mg/100g). Maximum inter cluster distance was observed between cluster III and V and indicated that the genotypes within these were highly divergent.ThesisItem Open Access : Effect of Foliar Application of Micronutrients on Growth, Yield and Quality of Potato (Solanum tuberosum L.)(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2019-01-30) Miyu, Mumtak; Sarma, P.; Hazarika, B.N.Among the treatments, T8 had highest number of leaves per shoot, number of compound leaves per plant and maximum leaf breadth. The highest volume of tuber was observed in T6 and the highest tuber weight was observed in T8 (127.00g). The treatment T8 has highest number of tuber and highest yield per plot in the entire grades. The highest marketable yield was obtained in T8. Treatment T5 has highest dry matter content and lowest non reducing sugar. The lowest reducing sugar was observed in T8 (0.14%). The highest starch content was observed in T7 (21.42 %). Soil analysis revealed that the highest pH was found in T5 (5.37) which was at par with T8 (5.36) and T6 (5.34). The effect of different treatments was found non-significant for organic carbon and organic matter. Treatment T1 has highest post-harvest N and P content. The maximum amount of K content was observed under treatment T2. The largest amount of Zn was observed in T5. From the present study it can be concluded that for growth parameters T8 was found to be best, for yield attributes T6 was found to be the best and for quality parameters T5 was found to be the best with high dry matter content and less sugar.ThesisItem Open Access Evaluation of Dolichos Bean [Lablab purpureus (L.) Sweet] Genotypes against Aluminium Toxicity(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-07-25) Ansari, Mohd. Talha; Warade, S. D..; Mailappa, A.S.The present investigation was carried out in the year 2016-2017 in naturally ventilated polyhouse of Vegetable Experimental Farm, Department of Vegetable Science, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in Factorial Completely Randomized Design with 2 factors (twenty dolichos bean genotypes with four aluminium (Al) level i.e. 0, 15, 30, 45 ppm) and three replications. Individual main effect and their interaction effects were studied for vine length at weekly interval (2nd -4th), morpho-physiological characters (biomass, root length, root tolerance index, root dry matter, shoot dry matter, leaf dry matter, total dry matter, uptake of P and Al), quality parameters (total protein, proline and total chlorophyll), parameters of soil (pH, EC, available P and extractable Al) at 4th week after sowing whereas yield parameters (pod weight, pod length, pod width, no of seed per pod and yield) at harvesting. In the present study, genotypes of dolichos bean exhibited significant differences for all characters. Aluminium treatment also expressed significant differences for all characters. However, interaction effect was found significant for all studied characters except vine length at all stages. Vine length at weekly interval, biomass, root length, root dry matter, shoot dry matter, leaf dry matter, total dry matter, uptake of phosphorus reduced significantly due to Al treatment except Al uptake. There was significant increase in total protein and proline content of plants at 4th week due to Al treatment, whereas significant reduction in chlorophyll content was observed. In soil parameters, pH and available P decreased with Al treatment, while EC and extractable Al increased significantly with respect to control. All the yield parameters were significantly reduced due to Al treatment. At lower concentration (15 ppm) there was no significant effect on vine length and yield parameters whereas morpho-physiological, soil and quality parameters were significantly affected. At higher concentrations (30 and 45 ppm) all the parameters were significantly influenced. From the present study it can be concluded that G1, G2, G4, G5, G10 and G16 are tolerant based on morpho-physiological characteristic and root tolerance index. Genotypes G1, G2, G4, G11 and G18 were found superior for yield characteristics whereas, G4 and G5 were superior for quality parameters. Overall genotypes G1 (Pusa Sem 3), G2 (VRSEM-207), G4 (VRSEM-601) were found tolerant to aluminium toxicity as well as high yielding.ThesisItem Open Access Effect of bio-fertilizer on growth and yield of cowpea [Vigna unguiculata (L.) Walp] var. Kashi Kanchan under foot hills of Arunachal Pradesh.(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2015-11-17) Nadeem, Mohammad Arshad; Singh, Vikas; Singh, Barun.The present investigation was carried out during zaid in 2014 at the Experimental Farm, Department of Vegetable Science, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in Factorial Randomized Block Design with 12 treatments, three levels of P (0, 20 and 40kg/ha) and four levels of bio-fertilizer (Control, Rhizobium @ 10ml/ kg seed, PSB @ 10ml/ kg seed and Rhizobium + PSB each @ 10ml/ kg seed) with three replications. The uniform doses of N and K @ 20 kg/ha along with 10 t/ha FYM were applied to all the treatments. Main effect of phosphorus, bio-fertilizer and their interaction effects were studied for days to 50% germination, days to 1st flowering, plant height, number of leaf per plant, leaf area index(LAI), stem girth, number of branches per plant, root length, number of nodules per plant, total dry matter production, pod yield, physio-chemical properties of soil (pH, , available N, P, K and organic carbon) before sowing and after harvesting and uptake of N, P, and K by plant. In the main effect of phosphorus, treatment P40 (20 : 40 : 20 kg NPK/ha + 10 t/ha FYM) showed the significantly superior performance with respect to almost all the growth parameters, yield, available soil nutrient and nutrient uptake by plant, except days to 50% germination, days to 1st flowering, plant height (at 15 and 30 DAS), number of leaves (at all the stages) and stem girth (at 30 DAS). Among the bio-fertilizers, the effect of B3 (inoculation of seed with Rhizobium + PSB along with application of 20 kg N, 20 kg K2O and 10 FYM/ha.) was found significantly superior for all the growth parameters, yield, available soil nutrient and nutrient uptake by plant, except days to 50% germination, days to 1st flowering, plant height (at 15 and 30 DAS), number of leaves (at all the stages), stem girth (at 30 DAS) and number of branches per plant (at 45 DAS). In interaction effect, P40B3 (inoculation of seed with Rhizobium + PSB along with application of 20 : 40 : 20 kg NPK/ha + 10 t/ha FYM) proved to be superior for all the growth parameters at later stages (45th and/or 60th DAS) of crop growth, while it was statistically at par with treatment P20B3 (inoculation of seed with Rhizobium + PSB along with application of 20 : 20 : 20 kg NPK/ha + 10 t/ha FYM) in most of the growth parameters. The treatment combination, P40B3 also recorded significantly higher green pod yield (196.4 g/plant, 10.64kg/plot and 120.90 q/ha) including available soil nutrient status viz., pH (6.20), N (370.89 kg/ha), P (38.57 kg/ha), K (168.77 kg/ha) and organic carbon (2.8%) and NPK uptake by plant after harvesting. Hence, the treatment P40B3 (application of 20 : 40 : 20 kg NPK/ha + 10 t/ha FYM along with inoculation of seed with Rhizobium + PSB) was considered the best treatment among the other treatments with respect to growth and yield parameters along with physio-chemical properties of soil and nutrient uptake by plant in cowpea variety Kashi Kanchan.ThesisItem Open Access Studies on Heterosis and Wilt Resistance in Brinjal (Solanum melongena L.).(College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2016-09-07) Yadav, Pradeep kumar; Warade, S. D.; Hazarika, B.N.The present investigation was conducted during Rabi, 2015-2016 at Vegetable Experimental Farm, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh with 8 selected brinjal parental lines namely Swarna Pratibha, NDB-3, Pant Rituraj, Pusa Purple Long, BR-112, CHFB-6, CHFB-7 and Solanum gilo that were crossed in all possible combinations in diallel technique excluding reciprocals [n(n-1)/2]. The resultant 28 F1 hybrids and 8 parents were studied for thirteen characters viz., plant height, number of branches per plant, days to first flowering, days to first fruit harvest, fruit length, fruit girth, fruit yield per plant, fruit yield tones per hacter, number of seeds per fruit, resistance against wilt, solasodine content, total phenol content and anthocyanin content. Data were analyzed statistically for analysis of variance, combining ability, heterosis and gene action. Analysis of variance revealed significant differences among treatments and hybrids for all the characters. Significant variances were observed for general as well as specific combining ability for all the thirteen traits implies that the both additive and non-additive components of heritable variance are responsible for variation. The ratio of GCA variance (σ2 GCA) to SCA variance (σ2 SCA) was lower than unity for all the traits indicating preponderance of non-additive gene action for all traits. Based on GCA effects parents CHFB-6, NDB-3 and BR-112 for earliness; Swarna Pratibha and CHFB-6 for fruits yield; CHFB-6 for anthocyanin and BR-112 for total phenol & solasodine content and CHFB-6 for earliness and fruit yield, Swarna Pratibha, Solanum gilo and Pant Rituraj for wilt resistance. On the basis of SCA effects, crosses Pant Rituraj x CHFB-6,, Pant Rituraj x CHFB-6, Pant Rituraj x CHFB-7, Swarna Pratibha x NDB-3 and Swarna Pratibha x Pusa Purple Long were the most promising for improvement of most of traits including fruit yield and quality. Heterosis studies indicated that heterosis for yield per plant ranged from -28.46 % to 108.88 % over better parent and from -38.75% to 97.92 % over standard variety, Pant Rituraj. The crosses CHFB-7 x Solanum gilo, Pant Rituraj x CHFB-6, and Swarna Pratibha x CHFB-6 showed significant heterosis over better and standard parent for fruit yield. Higher value of 1 and 2 compared to , significance value of h2, average degree of dominance ( / ) ½ and ratio of KD/KR showed the preponderance of dominance genes in the expression of yield and other traits including quality parameters, suggested that heterosis breeding approaches might be more rewarding than selection to improve yield together with quality traits in brinjal. For wilt resistance on the basis of rating scale, out of thirty six genotypes including parents and hybrids, thirteen genotypes were found to be resistance, fifteen were moderately resistance, seven were moderately susceptible and one was susceptible genotype and no genotypes observed to be highly resistance and highly susceptible to wilt disease. SDS-PAGE analysis showed considerable variation in band number of protein in between the parents and hybrids which is ranged from 8-33. In the crosses where Swarna Pratibha, NDB-3, Pant Rituraj and CHFB-6 is used as female parents, their hybrids were found to be closely related to them as compared to their male parents, whereas when Pusa Purple Long, BR-112 and CHFB-7 were used as female parents, their hybrid were more closely related to their male parents.
