Loading...
Dr. Y. S. Parmar University of Horticulture & Forestry, Solan
Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Solan, was established on 1st December, 1985 with the objective to promote education, research and extension education in the fields of Horticulture, Forestry and allied disciplines. Late Dr. Yashwant Singh Parmar, the first Chief Minister and the architect of Himachal Pradesh perceived the importance of Horticulture and Forestry to develop and improve the State economy which led to the establishment of this University. Its history lies in erstwhile Himachal Agricultural College, Solan, established in 1962 and affiliated to the Panjab University. It became one of the campuses of Agriculture Complex of Himachal Pradesh University on its formation in 1970. Consequent upon the establishment of Himachal Pradesh Krishi Vishvavidyalaya in 1978, this campus became its Horticulture Complex and finally in 1985, assumed the status of a State University, being the only University in the country engaged exclusively in teaching, research and extension in Horticulture and Forestry.
The University is located at Nauni in Solan District of Himachal Pradesh, 13 km from Solan on Solan-Rajgarh Road, at an elevation of 1300 metres above mean sea level. Solan town is situated on national highway (NH-22) and is well connected by train and bus services.
The University has four constituent colleges, out of which, two are located at the main campus Nauni, one for horticulture and the other for forestry, having 9 and 7 departments, respectively. The third College i.e., College of Horticulture & Forestry is located at Neri in Hamirpur District on Nadaun-Hamirpur state highway, about 6 Km from Hamirpur town and is well connected with bus service. The college offers three Undergraduate Degree Programmes i.e. BSc (Hons.) Horticulture, BSc (Hons.) Forestry and B. Tech. Biotechnology and MSc degree programme in a few subjects. The fourth college i.e. College of Horticulture and Forestry, Thunag (Mandi) is located at Thunag District Mandi. This college offer BSc (Hons.) Horticulture and BSc (Hons.) Forestry degree programme. In addition, there are five Regional Research Stations, 12 Satellite Stations and five Krishi Vigyan Kendras (KVKs) situated in different zones of the State.
Browse
40 results
Search Results
ThesisItem Open Access EFFECT OF IBA CONCENTRATIONS AND GROWING MEDIA ON GROWTH AND ROOTING PERFORMANCE OF APPLE ROOTSTOCK BUD 9(UHF,NAUNI, 2012-12) AMANDEEP; SHARMA, C LABSTRACT The present investigation entitled “Effect of IBA concentrations and growing media on growth and rooting performance of apple rootstock Bud 9” was undertaken at Pandah Experimental Farm of Department of Seed Science & Technology, Dr Y S Parmar University of Horticulture and Forestry Nauni, Solan H.P. during 2021-2022. The experiment was laid out in Randomised Complete Block Design (Factorial) with twelve treatment combinations replicated thrice, comprising of three IBA levels (0, 2000 and 2500 ppm) and four growing media (soil, sawdust, crop residue and FYM). Among different levels of IBA, the treatment IBA @ 2500 ppm recorded length of daughter shoot (137.26 cm), diameter of daughter shoot (10.41 mm), number of leaves (76.40), leaf area (44.99 cm2), leaf chlorophyll content (2.01 mg g-1), fresh weight of daughter shoot (118.65 g), dry weight of daughter shoot (61.66 g), per cent rooted shoots (73.98 %), average number of roots (10.85), longest root (27.95 cm), shortest root (6.85 cm), average root length (26.38 cm), root diameter (1.66 mm), fresh weight of roots (69.04 g), dry weight of roots (38.95 g), root: shoot ratio (0.61) and total biomass of rooted shoot (100.61 g). Among growing media, sawdust resulted in maximum length of daughter shoot (118.12 cm), diameter of daughter shoot (10.39 mm), number of leaves (74.10), leaf area (39.59 cm2), fresh weight of daughter shoot (117.16 g), dry weight of daughter shoots (62.41 g), per cent rooted shoots (67.73 %), average number of roots (10.14), longest root (27.51 cm), shortest root (6.55 cm), average root length (27.31 cm), root diameter (1.86 mm), fresh weight (66.41 g) and dry weight of roots (35.94 g), total biomass of rooted shoot (98.35 g). The interaction of IBA @ 2500 ppm + sawdust had exhibited maximum length of daughter shoot (143.73 cm), diameter of daughter shoot (12.12 mm), number of leaves (79.16), leaf area (48.18 cm2), fresh (143.50 g) and dry weight of shoots (74.50 g), per cent rooted shoots (76.23 %), average number of roots (13.16), longest root (32.11 cm), shortest root (9.11), average root length (32.16 cm), root diameter (2.34 mm), fresh weight of roots (86.16 g), dry weight of roots (50.50 g) and total biomass of rooted shoot (125.00 gThesisItem Open Access EFFECT OF SOWING DATES AND INTEGRATED PEST MANAGEMENT MODULES ON SEED YIELD AND QUALITY OF OKRA (Abelmoschus esculentus (L.) Moench)(UHF,NAUNI, 2017-10) BRICE, ANJALI; VERMA, SUBHASH CHANDERABSTRACT The present investigations entitled “Effect of sowing dates and integrated pest management modules on seed yield and quality of okra (Abelmoschus esculentus L. Moench)” were conducted during the year 2016 at the Pandah Research Farm of Department of Seed Science and Technology, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan (HP). The experiment was laid out in Randomized Complete Block Design (Factorial) with three replications. The okra cv. P-8 was sown at three different sowing dates viz., 1st June, 15th June and 30th June, 2016 under six integrated pest management modules and untreated control. The experimental results showed that among the three sowing dates the crop sown at sowing-I (seed yield: 25.67 q/ha) performed better than the crop sown at sowing-II (22.61 q/ha) and sowing-III (20.82 q/ha). IPM module-I (Seed treatment with imidacloprid @ 3 ml/kg, foliar spray of imidacloprid @ 0.3 ml/litre at 40 DAS, foliar spray of spinosad @ 0.3 ml/litre at 50 DAS, emamectin benzoate @ 0.4 g/litre at 70 days, foliar spray of spinosad @ 0.3 ml/litre at 80 DAS) was superior than rest of the modules for the traits studied viz., growth parameters i.e. plant height (49.35 cm at 45 DAS and 153.02 cm at harvest), number of branches per plant (7.76 at 45 DAS), number of leaves per plant (19.76 at 45 DAS), days to 50 % flowering (42 days), number of fruits per plant (16.22), fruit length (16.66 cm) and fruit breadth(18.67 mm), seed quality parameters i.e. number of seeds per fruit (54.64), hundred seed weight (5.63 g), seed yield (28.78 q/ha), seed germination (95.11 %), seed vigour index-I (1998.63), seed vigour index-II (2773.14) and electrical conductivity (455.33 μS/cm) and provided maximum protection against insect pests (4.13 jassids/plant and 0.24 blister beetles/plant). The next best IPM module was module-IV which resulted 27.65 q/ha seed yield followed by module-III (24.59 q/ha), module-II (24.10 q/ha), module-VI (20.70 q/ha) and module-V (20.16 q/ha).The study revealed that among the different combinations of sowing dates and IPM modules the maximum plant height at 45 days after sowing ( 56.63 cm), plant height at harvest (155.77 cm), number of branches per plant (8.80) at 45 days after sowing, number of leaves per plant (24.53) at 45 days after sowing, number of fruits per plant (17.73), fruit length (17.57 cm), fruit breadth (19.15 mm), number of seeds per fruit (58.53), seed yield (47.84 g/plant, 2.39 kg/plot and 31.89 q/ha), hundred seed weight (5.71 g), seed germination (97 %), seedling length (23.17 cm), seedling dry weight (30.11 mg), seed vigour index-I (2247.20), seed vigour index-II (2920.64) and minimum electrical conductivity (444.33 μS/cm), population of jassid (3.40 jassids/plant) and blister beetle (0.09 blister beetles/plant) was recorded at sowing-I (1st June) with module-I. Hence, the crop sown at sowing-I with IPM module-I was most suitable for plant growth and provided maximum protection from insect pests which resulted higher yield of quality seeds in okra.ThesisItem Open Access STUDIES ON SEED PELLETING AND DIRECT SOWING IN ONION (Allium cepa L.)(UHF,NAUNI, 2017-09) SWATI; THAKUR, ASHOK K.ABSTRACT The present investigation entitled ‘Studies on Seed Pelleting and Direct Sowing in Onion (Allium cepa L.)’ was carried out in two experiments at experimental farm and laboratory of Department of Seed Science and Technology, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan, HP during 2015-17. The seeds of onion cv. Nasik Red were pelleted with clay, Vitex leaf powder + clay, darek leaf powder + clay, ZnSO4 + clay, KNO3 + clay, KH2PO4+ clay, Bavistin + clay, Contaf + clay, Redomil + clay, keeping unpelleted seed as control. The first experiment was conducted to study the effect of seed pelleting on seed quality during storage. The pelleted seeds were stored at ambient conditions for 12 months in the plastic boxes. The seed quality was tested at four months interval i.e. immediately after treatment (i.e. zero month), four months, eight months and twelve months storage. Highest germination (81.19%), seedling length (9.64 cm), seedling dry weight (19.43 mg), seedling vigour index-I (753.19), seedling vigour index- II (1475.53) and speed of germination (28.20) were observed in onion seeds pelleted with ZnSO4 + clay. Among the storage periods, fresh pelleted seed (0 month) showed maximum values with respect to germination (93.20%), seedling length (11.91 cm), seedling dry weight (22.12 mg), seedling vigour index- I (1079.99), seedling vigour index- II (2047.01) and speed of germination (32.65). The germination (93.20%), seedling length (11.91cm) and seedling vigour index- I (1079.99) were highest in the fresh seeds (0 month) pelleted with the ZnSO4 + clay powder. The unpelleted seed showed minimum germination (75.00%), seedling length (8.88 cm) and seedling vigour index- I (654.89) after 12 month of storage. Germination and vigour of seeds pelleted with ZnSO4 + clay powder @ 300g + 4700 g seeds decreased with increase in storage time, however, the rate of deterioration of pelleted seeds was lower than the unpelleted control. The second experiment was conducted in the field using the pelleted seeds and crop was evaluated for bulb crop parameters. The seeds pelleted with ZnSO4 + clay showed maximum values w.r.t. plant height at 60 days after transplanting (DAT) (45.98 cm), average leaf length (37.19 cm), number of leaves per plant (9.10), polar diameter (41.44 mm), equatorial diameter (57.31 mm), bulb size index (2340.24 mm2), neck thickness (12.12 mm), average bulb weight (74.00 g), bulb yield (6.42 kg per plot or 385.04 q per ha), plant height before neck fall stage (54.78 cm). From the present studies, it can be concluded that onion seeds pelleted with ZnSO4 + clay powder @ 300g + 4700 g per kg seed showed significant effects for enhancing quality, growth and yield.ThesisItem Open Access STUDIES ON SEED TRANSMISSION OF ANTHRACNOSE IN BELL PEPPER (Capsicum annuum L.)(UHF,NAUNI, 2017-09) CHAITRA, V; BHARAT, NARENDER K.ABSTRACT The present investigation entitled “Studies on seed transmission of anthracnose in bell pepper (Capsicum annuum L.)” was carried out in the Department of Seed Science and Technology, Dr. Y. S Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2016-17. Two laboratory experiments were undertaken following Completely Randomized Design. The cultivar used was Solan Bharpur. Under first experiment Anthracnose or ripe fruit rot (Colletotrichum capsici) infected fruits were harvested at the maturity. On the basis of fruit infection level i.e. lesion size on the mature fruits seven treatment were kept viz., control (apparently healthy fruit), 1-5 mm, 6-10 mm, 11-20 mm, 21-30 mm, 31-50 mm and >51mm). Seeds from these fruits were extracted separately and subjected to seed quality and health testing following methods like Standard blotter paper methods, Roll paper method, Agar plate method and Grow out test. Seed germination (%), vigour index I & II and other seed quality parameters like seedling establishment (%), speed of germination were found highest in control treatment (seeds taken from apparently healthy fruits). Whereas the per cent infection of seed with Colletotrichum capsici, Alternaria sp., Fusarium sp. and Aspergillus sp. was observed highest in T7 (Fruit lesion size of 51 mm and above). In the second experiment healthy seeds of the same cultivar were artificially inoculated with the culture of Colletotrichum capsici grown on PDA. There were 8 treatments on the basis of the age of the culture used for inoculation separately viz., 1-3 days, 4-7 days, 8-11 days, 12-15 days, 16-19 days, 20-23 days, 24-27 days old culture and control. The inoculated seeds were subjected to seed quality and health testing following the same methods as under the first experiment. Seed germination (%), vigour index I & II and other seed quality parameters like seedling establishment (%), speed of germination were highest in control treatment. Whereas the per cent infection of seed with Colletotrichum capsici, Alternaria sp., Fusarium sp. and Aspergillus sp. was highest in T7 (24-27 days old culture) which was at par with T6 (20-23 days old culture). From these studies it can be concluded that the percent germination and other quality characters of the seeds extracted from the anthracnose infected bell pepper fruits (cv. Solan Bharpur) with lesion size up to 10 mm were not affected much and were similar to the seeds extracted from the apparently healthy fruits, where as the seeds extracted from the fruits with lesion size of more than 20 mm showed a sharp reduction in percent germination and seed quality parameters and the effect was similar as in case of seed extracted from severely infected fruits. The seeds extracted from anthracnose infected fruits also showed higher infection/contamination of Colletotrichum capsici as well as other seed microflora like Fusarium sp., Alternaria sp. and Aspergillus sp. Under artificial inoculation condition the germination and seed quality parameters were drastically reduced by the inoculation with fungal culture which was more than 15 days old. The seed also showed infection of C. capsici even after the surface sterilization. However, seed infection/contamination with C. capsici was reduced upto 50 per cent upon sterilization with sodium hypochlorite (1%). It also indicated that C. capsici is both internally as well as externally seed borne. Percent seed transmission (seed to plant) of C. capsici was recorded more than 20 per cent in naturally infected seeds and 17 per cent in artificially inoculated seeds.ThesisItem Open Access STUDIES ON AGRONOMIC BIO-FORTIFICATION WITH MICRONUTRIENTS IN ONION (Allium cepa L.) SEED CROP(UHF,NAUNI, 2017-09) DOGRA, RUPALI; THAKUR, ASHOK KUMARABSTRACT The present investigations entitled ‘Studies on Agronomic Bio-fortification with Micronutrients in Onion (Allium cepa L.) Seed Crop’ were carried out in two experiments at experimental farm and laboratory of Department of Seed Science and Technology, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan, HP during 2015-17. The seed crop of onion cv. Palam Lohit was sprayed with zinc, boron, molybdenum and their combinations. Foliar application of micronutrients was given as zinc sulphate, boric acid and sodium molybdate at a concentration of 5%, 1% and 0.05% respectively at 3 stages i.e. vegetative stage, prior to flowering and at seed set stage. The first experiment was conducted in the field, sprays of zinc @ 5% and boron @ 1% showed maximum values with respect to number of leaves per plant (12.67), leaf length (49.53 cm), plant height at final harvest (54.60 cm), number of umbel per plant (7.60), number of flower per umbel(465), number of seeds per umbel (386.67), seed yield (222.67 g per plot and 618.52 kg per ha), 1000 seed weight (3.97 g) and minimum for ovule to seed ratio (7.21) and days to bolting (113.43). Among the seed quality parameters, maximum germination (89.50%), seedling dry weight (10.50 mg), seed vigour index-I (1111.62), seed vigour index-II (939.60) were achieved with application of zinc and boron. In second experiment agronomically bio-fortified seeds were stored at ambient conditions for 9 months in the plastic boxes to study the seed quality during storage. The seed quality was tested at three months interval viz., immediately after harvest (i.e. zero month), third month, sixth month and ninth month of storage. Highest germination (83.50%), seedling length (10.72 cm), seedling dry weight (8.89 mg), seed vigour index-I (894.09) and seed vigour index-II (754.63) were observed in onion seeds bio-fortified agronomically with zinc @ 5% and boron @ 1%. Among the storage periods, freshly harvested seeds showed maximum values with respect to germination (83.50 %), seedling length (10.74cm), seedling dry weight (9.13 mg), seed vigour index-I (900.17), seed vigour index- II (763.72) and speed of germination (41.63). The germination (89.50%), seedling length (12.43cm), seedling dry weight (10.50 mg) seed vigour index-I (1111.62) and seed vigour index-II (939.60) were highest in the freshy harvested seed in which plant were sprayed with zinc @ 5% and boron @ 1%. In control, seed showed minimum germination percentage (70%), seedling length (6.12 cm) seedling dry weight (6.30 mg) and seed vigour index-I (504) and seed vigour index-II (441) after 9 months of storage. The micronutrient content of seed also increased with agronomic bio-fortification with zinc, boron and molybdenum. The highest zinc content (78 mg per kg) found in agronomically bio-fortified seeds with zinc @ 5%, highest boron content (2.02 mg per kg) found with boron @ 1% and highest molybdenum content (0.30 mg per kg) with molybdenum @ 0.05%. From the present studies, it can be concluded that onion seed crop sprayed with zinc @ 5% and boron @ 1% at vegetative stage, prior to flowering and at seed set stage resulted in better plant growth, yield contributing characters and seed yield and bio-fortified seeds improves seed quality characters like germination, dry weight and vigour in storage period.ThesisItem Open Access EVALUATION OF PLANT POWDERS AGAINST PULSE BEETLE (Callosobruchus chinensis L.) INFESTING PEA SEEDS(UHF,NAUNI, 2017) KAUR, KAMALDEEP; VERMA, S.C.ABSTRACT The present study on “Evaluation of plant powders against pulse beetle, (Callosobruchus chinensis L.) infesting pea seeds” was carried out during 2016-2017 in the Department of Seed Science and Technology, College of Horticulture, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni-173 230, Solan (H.P). The plant powders of neem, camphor, sweet flag, lemongrass, eucalyptus, wild marigold and drek each at 1g, 3g and 5g per 100g seed (w/w basis) were evaluated against C. chinensis L. infesting pea seeds. Among the seven plant powders sweet flag possessed reasonably high and immediate toxicity irrespective of its doses. It resulted 64.45 per cent overall mortality within a day of treatment, while in 3 days mortality increased to 84.44 per cent. After day -7 mortality observed in seeds treated with sweet flag powder was 98.89 per cent followed by neem (67.78%), eucalyptus (63.33%), camphor (56.67%), lemongrass (52.22%), drek (46.56%) and wild marigold (43.33%) in descending order. After 10 days of exposure, sweet flag powder caused 100 per cent mortality at 1, 3 and 5 g doses and neem and eucalyptus at 5 g/100 g seed. On day 15, mortality in control had substantially increased to 63.33 per cent. Egg laying was minimum with sweet flag powder treated pea seeds (3.11 eggs/ 5 females) on 7th-day of observation. In untreated pea seeds, increase in egg laying was negligible in 20- days of observation (97.00 on7th day to 109.33 on 20th day). Progeny development from the eggs laid on pea seed treated with sweet flag powder (1 beetle). Maximum protection to treated pea seeds in terms of reduction in seed damage by C. chinensis was provided by sweet flag powder (0.33%) and neem powder (8.91%). Next effective treatments were eucalyptus (9.61%), camphor (10.30%), lemongrass (10.555%), drek (11.09%) and wild marigold (11.47%). Pea seed treated with sweet flag powder resulted 93.67 per cent germination followed by neem (84.89%), eucalyptus (76.89%), camphor (73.11%), lemongrass (70.44%), drek (67.78%) and wild marigold (57.78%). Sweet flag powder resulted 2042.68 seed vigour index-I followed by neem (1330.67), eucalyptus (1318.39), camphor (1309.86), lemongrass (1288.18), drek (1005.65) and wild marigold (753.70). Maximum seed vigour index-II was recorded in sweet flag powder (3481.67) treated pea seed followed by neem (3092.89), eucalyptus (2519.11), camphor (2509.89), lemongrass (2508.33), drek (2007.00) and wild marigold (1681.89). In case of plant powders as grain protectant sweet flag powder at 5g/100g seed was effective in protecting pea seeds up to 6 months. No egg laying was recorded in pea seeds treated with sweet flag powder followed by neem (151.67 eggs), eucalyptus (155.50 eggs), camphor (181.00 eggs), lemongrass (195.83 eggs), drek (210.00 eggs) and wild marigold (241.67 eggs). Pea seeds treated with sweet flag powder at 5g/100g seed resulted no adult emergence, no seed damage, no weight loss and highest germination (95.50%), seed vigour index-I (2043.38) and seed vigour index –II (3145.00). Hence mixing of pea seeds with sweet flag powder at 3g dose provided protection up to 2- months of treatment whereas pea seeds treated with 5g/100g seed would be effective in protecting pea seeds against damage caused by pulse beetle, Callosobruchus chinensis L. up to month-6 of treatment.ThesisItem Open Access STUDIES ON THE EFFECT OF PLANT ARCHITECTURE ON SEED YIELD AND QUALITY IN TURNIP (Brassica rapa L.)(UHF,NAUNI, 2017) SHARMA, ASHISH; MEHTA, D.K.ABSTRACT The present investigation entitled “Studies on the Effect of Plant Architecture on Seed Yield and Quality in Turnip (Brassica rapa L.)” was carried out using cv Purple Top White Globe. The experiment was laid out in Randomized Complete Block Design in the field with 18 treatments (viz. control, topping, PBZ @ 10, 20, 30 and 50 ppm steckilng dip at replanting, PBZ @ 25, 50, 100 and 200 ppm at flower stalk emergence , Pro cal @ 10, 20, 30 and 50 ppm at steckling dip replanting and Pro cal @ 25, 50, 100 and 200 ppm at flower stalk emergence) and in Completely Randomized Design in Laboratory with three replications of each treatment at Department of Seed Science and Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during Rabi 2015-16. The observations in field were recorded on days to 50 per cent bolting, duration of flowering, days to harvesting, number of branches per plant, plant spread (cm2), plant height at final harvest (cm), length of pod (cm), breadth of pod (mm), number of pods per plant, number of seeds per pod, per cent broken branches, seed yield per plant (g), per plot (g) and per hectare (kg), While the observations recorded in the laboratory were 1000 seed weight (g), seed germination (%), seedling length (cm), seedling dry weight (mg), seed vigor index-I & II. Analysis of variance showed significant differences among the treatment combinations for all the characters studied except duration of flowering and days to harvesting. Experimental results revealed that treatment T6 (Steckling dip of PBZ @ 50 ppm at the time of replanting) was found superior over all other treatments in terms of growth, seed yield and seed quality characters. Therefore, application of PBZ @ 50 ppm as steckling dip at the time of replanting can be recommended for getting the higher yield of quality seeds of turnip in Himachal Pradesh after multi locations and multi years testing.ThesisItem Open Access EFFECT OF PLANT SPACING AND GA3 APPLICATION ON SEED YIELD AND QUALITY OF SWEET WILLIAM (Dianthus barbatus L.)(UHF,NAUNI, 2017) THAKUR, ANIT; DILTA, B.S.ABSTRACT The present investigation entitled, “Effect of plant spacing and GA3 application on seed yield and quality of sweet william (Dianthus barbatus L.)” was carried out at the Khaltoo experimental farm of Department of Seed Science & Technology, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2015 to 2017. The experiment was laid out in RBD (Factorial) with 12 treatment combinations of four levels of spacing i.e. S1 (30 × 30 cm), S2 (30 × 25 cm), S3 (30 × 20 cm) and S4 (20 × 20 cm) and three doses of GA3 i.e. G0 (0 ppm), G1 (50 ppm) and G2 (100 ppm) replicated thrice. Among different levels of spacing, S1 (30 × 30 cm) recorded maximum values for days taken to first flowering (131.67 days), plant spread (38.78 cm), number of flowers per plant (106.11), size of flowers (1.86 cm), duration of flowering (39.11 days), number of capsules per plant (67.84), number of seeds per capsule (48.67), seed yield per plant (4.57 g), 1000 seed weight (0.99 g), germination percentage (88.67 %), seedling length (7.45 cm), seedling dry weight (4.81 mg), seed vigour index-I (662.72) and seed vigour index-II (428.84). Whereas, spacing S4 (20 × 20 cm) recorded maximum values for plant height (46.07 cm), number of flowers per plot (2600.00) and seed yield per plot (107.18 g). The application of GA3 @ 100 ppm resulted in highest values for plant height (42.67 cm), plant spread (36.54 cm), number of flowers per plant (96.75), number of flowers per plot (2349.75), size of flowers (1.83 cm), duration of flowering (36.75 days), number of capsules per plant (62.67), number of seeds per capsule (46.49), seed yield per plant (4.08 g), seed yield per plot (99.66 g), 1000 seed weight (0.96 g), germination percentage (86.25 %), seedling length (7.11 cm), seedling dry weight (4.68 mg), seed vigour index-I (617.28) and seed vigour index-II (406.13). The interaction, S1 × G2 i.e. a plant spacing of 30 × 30 cm along with application of 100 ppm GA3 recorded maximum values in terms of most of the growth, flowering, seed yield per plant and seed quality parameters. However, maximum seed yield per plot was found under the interaction S4 × G2 i.e. when spacing was kept 20 × 20 cm apart with the application of GA3 @ 100 ppm, but the effects were found to be non significant. So, it is concluded that for better growth, flowering, maximum seed yield and quality, the plants be spaced at 30 × 30 cm a part along with the application of GA3 @ 100 ppm.ThesisItem Open Access STUDIES ON THE EFFECT OF PLANT ARCHITECTURE ON SEED YIELD AND QUALITY IN RADISH (Raphanus sativus L.)(UHF,NAUNI, 2017) SHAGUN; MEHTA, D.K.ABSTRACT The present investigation entitled “Studies on the Effect of Plant Architecture on Seed Yield and Quality in Radish (Raphanus sativus L.)” was carried out using cv Japanese White. The experiment was laid out in Randomized Complete Block Design in the field with 18 treatments (viz. control, topping, PBZ @ 10, 20, 30 and 50 ppm at replanting, PBZ @ 25, 50, 100 and 200 ppm at flower stalk emergence , Pro-cal @ 10, 20, 30 and 50 ppm at replanting and Pro-cal @ 25, 50, 100 and 200 ppm at flower stalk emergence) and in Completely Randomized Design in Laboratory with three replications of each treatment at Department of Seed Science and Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during Rabi 2015-16. The observations in field were recorded on days to 50 per cent bolting, duration of flowering, days to harvesting, number of branches per plant, plant spread (cm2), plant height at final harvest (cm), length of pod (cm), breadth of pod (mm), number of pods per plant, number of seeds per pod, per cent broken branches, seed yield per plant (g), per plot (g) and per hectare (kg), While the observations recorded in the laboratory were 1000 seed weight (g), seed germination (%), seedling length (cm), seedling dry weight (mg), seed vigour index-I and II. Analysis of variance showed significant differences among the treatment combinations for all the characters studied except duration of flowering and days to harvesting. Experimental results revealed that treatment T6 (Steckling dip of PBZ @ 50 ppm at the time of replanting) was found superior over all other treatments in terms of growth, seed yield and seed quality characters. Therefore, application of PBZ @ 50 ppm as steckling dip at the time of replanting can be recommended for getting the higher yield of quality seeds of radish in Himachal Pradesh after multi locations and multi years testing.