Browsing by Author "SINGH, V. P."
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ThesisItem Open Access COLLECTION AND EVALUATION OF STEVIA (Stevia rebaudiana Bertoni.) GENOTYPES FOR GROWTH, HERBAGE YIELD AND QUALITY UNDER NORTHERN DRY ZONE OF KARNATAKA(University of Horticultural Sciences, Bagalkot, 2019-07) REDDY, P SAINATHA; SINGH, V. P.; KERUTAGI, M. G.; Y. C., VISHWANATHThe field experiment "Collection and Evaluation of Stevia (Stevia rebaudiana Bertoni.) genotypes for growth, herbage yield and quality under Northern Dry Zone of Karnataka" was conducted to evaluate nine stevia genotypes viz., CIM Madhu, CIM Mithi, Kodaikanal Local, Pune Local, Zaheerabad Local, GKVK Stevia-1, Indore Local, Hyderabad Local and Bidar Local in Randomized Complete Block Design with three replications during rabi season of 2018-19 at Main Horticultural Research and Extension Centre (MHREC), University of Horticultural Sciences, Bagalkote, Karnataka. The results of the study revealed that, among the different genotypes evaluated, significantly higher plant height (46.02 cm), number of branches per plant (57.60), number of leaves per plant (895.43), plant spread in East-West (31.47 cm) and North-South (31.23 cm) direction and chlorophyll reading by SPAD meter (53.67) at harvest were observed in GKVK Stevia-1. The number of days taken for first flowering (21.53) and 50% flowering (26.03) were also recorded maximum in GKVK Stevia-1. Similarly, the yield parameters such as fresh herbage yield per plant (110.08 g plant-1), dry herbage yield per plant (30.63 g plant-1), fresh herbage yield per plot (1.49 kg plot-1), dry herbage yield per plot (0.43 kg plot-1), fresh herbage yield per hectare (7.88 t ha-1) and dry herbage yield per hectare (2.27 t ha-1) were significantly higher in the genotype, GKVK Stevia-1. However, the maximum stevioside content (%) was observed in the Hyderabad Local (6.52 %) which was on par with GKVK Stevia-1 (6.48 %), Indore Local (6.45 %) and Kodaikanal Local (6.30 %) genotypes. The study has revealed that the genotypes viz., GKVK Stevia-1, CIM Madhu, CIM Mithi and Indore Local were found promising to grow during the rabi season under protective irrigation in the Northern Dry Zone of Karnataka.ThesisItem Open Access EFFECT OF INTEGRATED NUTRIENT MANGEMENT ON GROWTH AND YIELD OF TULSI (Ocimum sanctum L.) IN NORTHERN DRY ZONE OF KARNATAKA(University of Horticultural Sciences, Bagalkot, 2019-07) N. P., YASHASWINI; KATTIMANI, K. N.; SINGH, V. P.; JHALEGAR, M. D. JAMEEL; D. L, RUDRESHThesisItem Open Access EVALUATION OF COCONUT HYBRIDS FOR GROWTH, PRODUCTIVITY AND TENDER NUT UNDER CENTRAL DRY ZONE OF KARNATAKA(University of Horticultural Sciences, Bagalkot (COLLEGE OF HORTICULTURE, BAGALKOT), 2019-08) A. G., NAGARATHNA; Y. C., VISHWANATH; SINGH, V. P.; HUBBALLI, MANJUNATH; GOLLAGI, S. G.The present study entitled, “Evaluation of coconut hybrids for growth, productivity and tender nut under Central Dry Zone of Karnataka” was carried out at Horticulture Research and Extension Station, Arsikere, University of Horticultural Sciences, Bagalkot during 2018-19 with nine coconut hybrids and one local variety. Among the hybrids evaluated, WCT x GBGD recorded highest palm height (10.59 m) and husk thickness (3.51 cm), where as WCT x MYD recorded highest palm girth (127.95 cm). The number of functional leaves (34.17), total leaf length (5.25 m), number of female flowers produced (23.85), number of bunches per palm (8.83), number of tender nuts per bunch (11.84), number of mature nuts harvested per palm (62.33), dehusked nut weight (516 g), copra yield (9.54 kg/palm), highest reducing sugar (3.77 g/100 ml), total sugar (5.41 g/100 ml), protein content (1.11%) were recorded highest in Kalpa Ganga (GBGD x FJT). Kera Sankara (WCT x COD) recorded significantly maximum kernel weight (258.17 g), kernel thickness (1.52 cm), highest copra content (153.67 g/nut) and oil percent (68.70). Whereas, maximum length of mature nut (31.91 cm) and shell weight were recorded in Vasista Ganga (195.10 g). Significantly, highest whole nut weight (1246.93 g), breadth of nut (20.17 cm), husk weight (784.84 g), oil yield (6.27 kg/palm) and tender nut characters viz., maximum volume of nut water (306.67 ml/nut), maximum qualitative characters such as TSS (5.77 ˚Brix), pH (5.35), non reducing sugar (2.01 g/100 ml), optimum level of sodium (24.80 ppm), potassium content (1771.05 ppm), phosphorous (5.83 mg/100 ml), calcium (60.33 mg/100 ml), magnesium (19.17 mg/100 ml) and highest organoleptic score (8.25) in tender nut water were recorded by Abhaya Ganga (GBGD x LCOT). Among the hybrids evaluated, Kalpa Ganga (GBGD x FJT) performed best with respect to yield (62.33), Kera Sankara (WCT x COD) with respect to oil content (68.70 %) and Abhaya Ganga (GBGD x LCOT) was found to be best with respect to tender nut quality under Central Dry Zone of Karnataka.ThesisItem Open Access INTEGRATED NUTRIENT MANAGEMENT IN KALMEGH (Andrographis paniculata Wall. Ex. Nees.)(University of Horticultural Sciences, Bagalkot, 2019-08) H. E., NALEENA; KATTIMANI, K. N.; SINGH, V. P.; N., JAGADEESHA; E., RAJASHEKHARAThe field investigation with different combinations of organic manures and inorganic fertilizers were undertaken to know information on “Integrated nutrient management in kalmegh (Andrographis paniculata Wall. Ex. Nees.)” at Main Horticultural Research and Extension Centre (MHREC), UHS, Udyanagiri, Bagalkote, during 2018-19. The experiment was conducted on CIM-Megha variety and it was laid out in factorial randomized block design with 24 treatments involving different combination of organic manures and inorganic fertilizers with three replications. The three main factors considered having different levels in which 3 levels of FYM (M0, M1 and M2, respectively), 2 levels of Vermicompost (V0 and V1) and 4 levels of nitrogen, phosphorous and potassium (F0, F1, F2 and F3, respectively), Among the different treatment combinations, application of 25 t FYM, 1 t vermicompost along with 75: 75: 50 kg NPK per ha (M2V1F3) recorded significantly maximum plant height (65.67 cm), number of leaves per plant (105.38), number of branches per plant (47.97), LAI (2.53), CGR (0.18 g m-2 day-1), RGR (13.07 mg day-1), NAR (0.74 mg day-1 m-2), lower available N and K (41.63 and 23.63 kg ha-1), N and P uptake (126.65 and 26.53 kg ha-1), total dry matter production (12.92 g plant-1), fresh herbage yield (21.47 t ha-1), dry herbage yield (7.64 t ha-1) and the highest benefit cost ratio (3.29) were recorded. Significantly maximum andrographolide content (4.41%) was recorded with the application of 25 t FYM along with 1 t vermicompost (M2V1F0). Hence, it can be concluded, that Andrographis paniculata Wall. Ex. Nees. variety CIM-Megha has shown better performance under dry land situation with application of 25 t FYM, 1 t vermicompost along with 75: 75: 50 kg NPK per ha (M2V1F3) in terms of growth, yield, economics and soil health. Whereas, application of 25 t FYM along with 1 t vermicompost (M2V1F0) performed better in terms of quality (andrographolide content %).ThesisItem Open Access PROPAGATION TECHNIQUES IN STEVIA (Stevia rebaudiana Bertoni.) FOR GROWTH, YIELD AND QUALITY(University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bagalkot)., 2021) YADAVANNAVAR, AISHWARYA.; SINGH, V. P.; Y. C. VISHWANATH; PATIL, A. G.; PATIL, BAPURAYAGOUDA.; JHALEGAR, MD. JAMEEL.An investigation entitled “Propagation techniques in stevia (Stevia rebaudiana Bertoni.) for growth, yield and quality” was conducted at University of Horticultural Sciences, Bagalkot and farmer‟s field in Bidar district during 2019-2020. The laboratory experiment was laid out in a completely randomized design with ten treatments in four replications. The seeds of stevia were treated with different seed treatments for assessment of seed quality parameters. The seeds soaked in GA3 at 10 ppm for 12 hours had recorded early commencement of seed germination (3.00 days), maximum germination per cent (62.25%), root length (10.30 mm), shoot length (14.15 mm), seedling vigour index (1522), seedling dry weight (2.90 mg per 10 seedlings) and field emergence (47.75%) compared to other treatments. The propagation experiment in shade house was laid out in a completely randomized design with ten treatments in three replications. The cuttings treated with IBA at 500 ppm took minimum number of days to sprouting (12.68 days) and it showed maximum number of leaves (45.84), shoot length (33.56 cm), root length (16.63 cm), fresh weight of leaves and root (1.503 g and 0.903 g) and dry weight of leaves and root (0.460 g and 0.357 g) respectively, at 45 days after planting. Field experiment on response of growth regulators on growth, herbage yield and quality in stevia was laid out in a randomized complete block design with ten treatments and three replications. The IBA at 500 ppm treated cuttings showed maximum plant height (38.75 cm), number of leaves per plant (476.86), number of branches per plant (31.19), plant spread (27.82 cm2 ), highest fresh (7.34 t) and dry (2.03 t) herbage yield per hectare at harvest, IBA at 750 ppm showed maximum stevioside per cent (2.59%) and stevioside yield (51.04 kg/ha) compared to all other treatments.ThesisItem Open Access ROLE OF GROWTH REGULATORS ON GROWTH, YIELD AND QUALITY OF ALFALFA (Medicago sativa L.) UNDER NORTHERN DRY ZONE OF KARNATAKA(University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bagalkot)., 2021) D. P. MANJU PRASADA; SINGH, V. P.; Y. C. VISHWANATH; S. M. PRASANNA; VIJAYMAHANTESH; JHALEGAR, MD. JAMEELAn experiment entitled “Role of growth regulators on growth, yield and quality of Alfalfa (Medicago sativa L.) under Northern dry Zone of Karnataka” was conducted during rabi season, at department of Plantation, Spices, Medicinal and Aromatics Crops, College of Horticulture, UHS, Bagalkote, Karnataka, during the year 2019-20. In this experiment, the plant growth regulators viz., GA3 (50 ppm and100 ppm), IAA (50 ppm and 100 ppm), NAA (50 ppm and100 ppm), Kinetin (50 ppm and 100 ppm), Humic acid (4.0ml/l and 6.0ml/l), Salicylic acid (1.5 g/l and 3 g/l) and water as control were sprayed at 30, 60, 90 and 120 days after sowing and analysed for their vegetative growth, yield and quality parameters. Among different growth regulators, the plants sprayed with GA3 at 100 ppm recorded highest plant height (79.48 cm, 75.83 cm, 74.67 cm and 71.50 cm), stem diameter (5.09 mm, 4.54 mm, 3.68 mm and 3.26 mm) and leaf area (811.81 cm2 , 976.02 cm2 , 740.65 cm2 and 557.21 cm2 ) at I, II, III and IV harvest i.e., on 50, 80, 110, and 140 DAS, respectively. However, the plants sprayed with Kinetin at 50 ppm persistently recorded maximum plant spread (22.57 cm, 30.60 cm, 20.17 cm and 16.77 cm) at I, II, III and IV harvest respectively. During I, II, III and IV harvest, the plants sprayed with GA3 at 100 ppm recorded significantly maximum fresh herbage yield per hectare (16.59, 17.73, 13.43 and 11.12 t/ ha respectively) and dry herbage yield per hectare (4.01, 4.15, 3.70 and 3.42 t/ha respectively). The quality parameters of alfalfa were significantly influenced by different plant growth regulators. The highest protein content (17.65%) and vitamin C (276.73 mg/100g) content was observed in the plants sprayed with GA3 at 50 ppm. Plants sprayed with humic acid at 4.0ml/l recorded a significantly higher vitamin B12 (1.19 ng/g). Overall, application of plant growth regulators at different concentration plays an important role in alfalfa growth, yield and quality. All the applied growth regulators increase growth and yield as compared to control. Among different growth regulator and its concentrations, the plants sprayed with GA3 at 100 ppm showed better result for growth and yield which was followed by kinetin at 50 ppm. Regarding quality parameter, vitamin C and protein content found highest in plants sprayed with GA3 at 50 ppm, while vitamin B12 was found highest in plants sprayed with humic acid at 4 ml/l.ThesisItem Open Access STANDARDIZATION AND EVALUATION OF BOTANICAL OIL FORMULATIONS AGAINST SUCKING PESTS OF CHILLI (Capsicum annuum L.)(University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bagalkot)., 2021) GADGE, ANKUSH SUBHASH.; VENKATESHALU; J. B. GOPALI; HADIMANI, H. P.; SINGH, V. P.; S. RAGHVENDRA; VIJAYMAHANTESHConsidering the demand to use ecofriendly products and finding out alternative to synthetic pesticides for management of sucking pests in chilli ecosystem, the experiment was conducted to evaluatebio efficacy of newly formulated botanical oil combinations from pongamia (Millettia pinnata), neem (Azadirachta indica), cotton (Gossypium spp.) seed and citronella (Cymbopogon nardus) oil against sucking pests of chilli in field condition during 2018-19. Investigation carried in laboratory for standardization of spreader (Detergent powder) concentration for various pongamia oil concentrations indicated that, 0.3 per cent spreader concentration was more efficient for stable emulsification of pongamia oil @ 2.5, 5.0 and 10 per cent concentration. Results from the investigation of phytotoxicity effects of pongamia oil on chilli plantsshowed that, pongamia oil @ 0.5, 1.0 and 2.5 per cent concentration were safer to chilli plants. Whereas, at double the dose of pongamia oil @ 5.0 and 10 per cent concentration recorded the moderate and high phytotoxicity on chilli plants. Hence, the lower dose of 2.0 per cent of botanical oil was selected as optimal dose for application in field for chilli pest management. Further, evaluation of bio efficacy of botanical oils and their combinations @ 2.0 per cent against sucking pests of chilli revealed that, combination of Pongamia oil+ Neem oil+ Cotton seed oil + Citronella oil @ (50:25:15:10 ratio) was superior in management of sucking pests followed by Pongamia oil+ Neem oil @ (50:50 ratio). Botanical oils and their combinations were found effective against sucking pests with no direct impact on honey bees and natural enemies. Significantly higher yield was obtained from plots treated with Pongamia oil+ Neem oil+ Cotton seed oil + Citronella oil @ (50:25:15:10 ratio) with 24.07 t/ha with a benefit cost ratio of 2.33 and can be recommended for management of sucking pests in chilli.