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Now showing 1 - 9 of 35

Open Access
Influence of Planting Materials, Sowing Dates and Spacing on Seed Yield and Quality of Radish (Raphanus sativus L.)
(University of Agricultural Sciences, Dharwad, 2016-06) Kattimani, Asha Kasturinaik; Eshanna M.R.
Open Access
Standardization of Seed Testing Procedures in Some Medicinal Plants
(University of Agricultural Science, Dharwad, 2016-06) Manu B.V.; Vyakaranal, B.S.
Study on four medicinal plant species viz., Mucuna pruriens, Phyllanthus emblica, Putranjiva roxburghii and Santalum album was undertaken to standardize media and temperature required to test for seed germination in the laboratory of Department of Seed Science and Technology and Seed Unit, University of Agricultural Sciences, Dharwad. The experiment was comprised of temperature ranges involving four constant (15, 20, 25 and 30 0C) and three alternate (15-25, 15-30 and 20-30 0C) temperatures and three media i.e., between paper (BP), top of paper (TP) and sand medium. Further experiment was also conducted to find out the effect of pre-sowing seed treatment on field emergence of four medicinal plant species in Saidapur Farm, UAS, Dharwad. Among the different temperatures and media studied, maximum germination (90.88 %) was recorded in Mucuna pruriens at 30 0C temperature in BP method. The first and final counts were fixed on 4th and 8th day, respectively. In BP method at constant temperature of 30 0C Phyllanthus emblica recorded maximum germination (52.19 %). The first and final counts were fixed on 5th and 11th day, respectively. At constant temperature of 30 0C in BP method the highest germination (47.75 %) was recorded in Putranjiva roxburghii. The first and final counts were fixed on 15th and 24th day, respectively. In Santalum album the highest germination (23.95 %) was observed in sand medium at constant temperature of 30 0C. The first and final counts were fixed on 23rd and 37th day, respectively. Among the seed treatments maximum germination (82.00 %) was recorded in the seed treated with GA3 (50 ppm) in Mucuna pruriens. In Phyllanthus emblica the highest germination (38.00 %) was recorded in the seeds treated with GA3 100 ppm + BAP 50 ppm. The seeds dipped in conc. H2SO4 for 10 minutes recorded highest germination (28.00 %) in Putranjiva roxburghii. In Santalum album highest germination (16.00 %) was recorded in the seeds treated with GA3 500 ppm.
Open Access
Effect of Growth Regulators, Stages of Harvest Under Different Growing Conditions on Seed Yield and Quality and Manipulation of Dormancy in Lettuce (Lactuca sativa L.)
(University of Agricultural Science, Dharwad, 2016-06) Karthik, M.S.; Gurumurthy, R.
A field experiment was carried out at Hi-Tech Horticulture unit, Saidapur farm and the laboratory experiment was carried at seed quality testing and research laboratory National Seed Project, UAS Dharwad during 2015-16 to study the effect of growth regulators, stages of harvest under different growing conditions on seed yield and quality and manipulation of dormancy in lettuce. The growing condition shade house registered significantly higher number of leaves per plant (39.27), leaf area index (7.55), number of capsules per plant (507), seed yield per hectare (423.23 kg), seed germination (90.78 %), seedling vigour index (743.25) and lower electrical conductivity of seed leachate (0.93 dS/m). The growth regulator spray of GA3 (20 ppm) + BAP (30 ppm) registered significantly higher number of leaves per plant (41.92), leaf area index (7.96), number of capsules per plant (560.83), seed yield per hectare (442.39 kg), seed germination (93.06 %), seedling vigour index (785.41) and lower electrical conductivity of seed leachate (0.87 dS/m). Among the different stages of harvest, harvesting at 50 % feathering recorded significantly higher seed yield per hectare (435.09 kg), seed germination (91.54 %) and 1000 seed weight (0.93 g). The second experiment was carried out to study the effect of different chemicals, growth regulator and light treatment on germination and seedling quality in lettuce. Significantly higher germination percentage (95 %) was recorded with the red light treatment of 660 nm for 15 min but the seedling vigour index (629) was recorded significantly higher in case of treatment with GA3 at 100 ppm for 60 min.
Open Access
Studies on Nursery Management Techniques in Hippe Seeds (Mahua indica)
(University of Agricultural Science, Dharwad, 2016-06) Gollara, Annaiah; Channaveerswami, A.S.
Pot experiments were conducted to find out the nursery management techniques in hippe (Mahua indica) at Biofuel Information and Demonstration Centre (BIDC), Hanumanamatti, University of Agriculture Sciences, Dharwad during kharif - 2015 and were laid out in RCBD. Among different nursery mixtures, composition of red soil + white sand + vermicompost in 1:1:1 proportion (T8) recorded significantly higher values of normal seedlings (74.25 %) and germination (90.25 %) with significantly minimum abnormal seedlings (4.00 %), dead seeds (5.75 %) and hard seeds (16.00 %). This treatment also recorded significantly maximum root length of 16.70 cm, shoot length of 16.54 cm, seedling length of 33.23 cm, highest seedling dry weight of 15.31 g/10 seedlings, seedling vigour indices-I value of 2997, seedling vigour indices-II value of 1381 and also significantly highest germination rate index (2.41) was recorded at 45 days after sowing compare to other treatments. Among different pre-sowing treatments, seeds dipping in conc. H2SO4 for 1 min (T6) recorded significantly higher values of normal seedlings (80.00 %) and germination (84.00 %) with significantly minimum dead seeds (5.80 %) and hard seeds (4.00 %). This treatment also recorded significantly maximum root length of 16.78 cm, shoot length of 16.16 cm, seedling length of 32.93 cm, highest seedling dry weight of 16.19 g/10 seedlings, seedling vigour indices-I value of 2772, seedling vigour indices-II value of 1357 and also significantly highest germination rate index (3.39) while significantly minimum abnormal seedlings (6.00 %) observed by control at 45 days after sowing compare to other treatments.
Open Access
Effect of Growth Regulators and Spacing on Crop Growth, Seed Yield and Quality of French Bean (Phaseolus vulgaris) Cv. Arka Suvidha Under Different Growing Conditions and Seasons
(University of Agricultural Science, Dharwad, 2016-06) Bharamanagowda D.S.; Eshanna, M.R.
The field experiments were conducted to study the effect of growth regulators and spacing on crop growth, seed yield and quality of French bean under different growing conditions and seasons. The experiment was carried out in shade house (G1) and open field condition (G2) with 45x15 cm (S1) and 60x15 cm (S2) spacings and five foliar sprays consists NAA @ 25 ppm, 50ppm and IAA @ 25ppm, 50ppm with control in both season of 2015-16. In shade house, plant height was significantly higher in kharif (40.19 cm) and rabi (38.05 cm) at harvesting. Similarly, more number of days to pod maturity (92.39 and 92.83 days), number of pods per plant (17.07 and 18.09), pod yield per hectare (28.61 and 28.02 q), seed yield per hectare (22.72 and 23.16 q), hundred seed weight (37.79 and 38.06 g), seed germination (92.22 and 94.33 %), seedling vigour index (3137 and 3218) in kharif and rabi season respectively. The spacing 60x 15 cm recorded significantly higher number of pods per plant (16.80 and 18.54), seed weight per pod (16.80), pod yield per plant (45.47 and 48.74 g), hundred seed weight (36.17 and 36.52 g), seed germination (90.07 and 91.40 %) and seedling vigour index (2972 and 3128) and spacing 45 x 15 cm recorded significantly higher pod yield per hectare (24.64 and 24.56 q ) and seed yield per hectare (19.19 and 20.27 q) in kharif and rabi season respectively. Among the growth regulators spray, NAA at 50ppm recorded significantly higher number of pods per plant (17.77 and 18.91), pod yield per hectare (24.81 and 25.63 q), seed weight per pod (1.84 and 1.85 g), seed yield per hectare (19.52 and 21.11 q) and hundred seed weight (36.72 and 37.33 g) in kharif and rabi season respectively.
Open Access
tudies on Age of Seedlings, Fruit Retention Load, Shoot and Fruit Borer Control and Seed Invigoration Techniques to Enhance Seed Yield and Quality in Brinjal (Solanum melongena L.)
(University of Agricultural Science, Dharwad, 2016-06) Bhanuje, Tejagouda; Raikar, S.D.
The field experiments were conducted at farmer’s field Chinchali village, Rayabag taluka, Belagavi District, Karnataka during kharif 2014-15 and 2015-16 and laboratory experiment were conducted in Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad during 2014-15. The results revealed that, retaining all fruits for seed purpose recorded significantly higher seed yield (369 kg/ha) as compared to plucking initial formed 18 fruits of green stage for vegetable purpose and retaining remaining fruits for seed purpose. For seed production of brinjal, plucking initial formed 3 fruits of green stage for vegetable purpose and retaining remaining fruits for seed purpose compared to retaining all fruits for seed purpose was found to be most ideal as it registered on par test weight, number of seeds per fruit, seed yield with better quality parameters and an extra income of Rs. 14,395 per hectare was obtained. Among the foliar spray with insecticides, emamectin benzoate was most effective in suppressing the pest population as lowest mean per cent fruit infestation and seed damage was recorded after its application (15.50 and 12.33 % respectively) followed by flubandamide (16.71 and 13.09 %) and spinosad (18.17 and 14.93 %). Brinjal seeds primed with GA3 50 ppm and PEG @ 1.25 MPa and drying them back to their original moisture content needs to be practiced to obtain higher seed quality. The optimum yield with better quality seed can be obtained from the brinjal cv. Kudachi local when 35 days old seedlings were transplanted with GA3 @ 50 ppm growth regulator spray.
Open Access
Effect of Source of Planting Material and Nutrition on Seed Yield and Quality in Guinea Grass
(University of Agricultural Science, Dharwad, 2016-06) Nayaz R.; Vinod Kumar
A field experiment was conducted at Indian Grassland and Fodder Research Institute, Southern Regional Research Station, Dharwad during kharif 2015, to find out the effect of planting material and nutrition on seed yield and quality in guinea grass. The design employed was RBD in factorial concept with three replications. The experiment consisted of two planting materials viz., seeds and root slips and five nutrient levels viz., N1: RDF (60:30:20 kg of NPK/ha), N2: 25% more than RDF, N3: 50 % more than RDF, N4: RDF + spraying of DAP 2 % at flowering stage, N5: RDF + spraying of NAA 50 ppm at flowering stage. Among the planting material used, non-significant difference was observed for all growth and yield parameters, but root slips performed better over the seeds. Irrespective of planting material, nutrition levels recorded significantly. Whereas N3 recorded more tiller number (14.77 at maturity), panicle number (18.3), green fodder yield/ha (13.21 q), seed yield/ha (95.24 kg), germination percentage of (23.49) and seedling vigour index (216) compared to other nutrition levels. The second experiment was conducted in the laboratory to find out the effect of different seed separation methods and germination enhancement techniques on seed quality of guinea grass. The experiment consisted of two seed separation methods with five germination enhancement techniques. Among the seed separation methods, floating method with alcohol significantly recorded significantly highest germination percentage (28.09), root length (5.61 cm), shoot length (6.71 cm) and vigour index (283) over the control. Among the germination enhancement techniques acid scarification with H2SO4 @ 5 % for 5 minutes recorded significantly higher germination percentage (30.57), root length (5.95 cm), shoot length (6.93 cm) and vigour index (340) over the other techniques.
Unknown
Standardization of Seed Production Technology in Green Manure Crops Sunnhemp and Dhaincha
(University of Agricultural Science, Dharwad, 2016-06) Sajjan, Priya; Hunje, Ravi
An investigation entitled “Standardization of seed production technology in green manure crops sunnhemp and dhaincha” was carried out during kharif season of 2015 – 16 at the Main Agriculture Research Station, Dharwad with two field and laboratory experiments. The experiment was aimed to study the influence of pinching of terminal bud, effect of foliar application of micronutrients and growth regulators, and DAP spraying on seed yield and quality of sunnhemp and dhaincha. Pinched plants showed significantly lowest plant height (184.19 cm, 160.15 cm), and highest number of branches ( 16.24 and 17.72), pod yield (0.43 kg and 6.14 kg) and seed yield (2,348.88 kg/ha and 1,593.87 kg/ha), seed quality parameters like seed germination (80.49 % and 72.33 %), seedling viguor index (2895 and 2173) were also highest in both sunnhemp and dhaincha. Among the foliar sprayings, the combination of all nutrients (Zn+B+NAA+DAP) showed significantly highest value for plant height (198.13 cm and 175.55 cm), number of branches (20.02 and 17.93) pod yield (0.41 kg and 6.25 kg), seed yield (2,544.44 kg/ha and 1,644 kg/ha), The resulted seeds recorded higher seed germination (84.00 % and 75.00 %), seedling viguor index (3235 and 2357) in both sunnhemp and dhaincha as compared to other treatments. The studies also revealed that, the interaction effect of both pinching and foliar spraying of all nutrient combinations showed the significantly higher plant height (189.00 cm and 171.73 cm), number of branches (21.00 and 21.33), seed yield (2791.16 kg/ha and 1872.20 kg/ha) and seed germination (86.00 % and 75.67 %) and seedling viguor index (3279 and 2406) in sunnhemp and dhaincha.
Unknown
Seed Technological Research on Hybrid Pigeon Pea (ICPH-2671)
(University of Agricultural Science, Dharwad, 2016-06) Chandravathi B.; Gurumurthy R.
The field and laboratory experiments were conducted to study the effect of pollination methods, planting ratio’s, insect attractants and morphological and molecular characterization of parental lines of hybrid pigeon pea ICPH-2671 at Seed Science and Technology, Department, College of Agriculture, University of Agricultural Sciences, Dharwad during kharif-2011 and 2015. Among pollination methods, P3: plant to progeny row selection recorded significantly the highest number of seeds per pod (4.23), hundred seed weight (12.01 g) and seedling vigour index (2963) as compared to P1: selfing and P2: random mating pollination methods. The treatment T2: insect attractant spray Bee-Q at the rate of 12.5 g/liter of water recorded significantly the highest number of seeds per pod (3.56 seeds /pod), seed yield per plant (62.68 g/plant), seed yield per plot (4.90 kg/plot) and seed yield per ha (2243.00 kg/ha), germination (93.39 %), shoot length (15.75 cm), root length (12.32 cm), seedling vigour Index (2627), seedling dry weight (0.91 g), hundred seed weight (12.19 g) and low electrical conductivity (0.39 dS/m) as compared to T1: control (Without insect attractant spray) in F1 hybrid ICPH-2671 seed production. Among the different planting ratio’s the P6: 5:2 and P5: 4:2 female to male planting ratio’s recorded significantly higher seed yield and quality as compared to P1: 3:1, P2 :4:1, P3:5:1 and P4:3:2 planting ratio’s in F1 hybrid ‘ICPH-2671’seed production. The study of morphological characterization of parental lines of the hybrid pigeon pea ‘ICPH-2671’ is useful for identification of off types in hybrid pigeon pea seed production mainly to carry out the rouging operation. In molecular markers characterization study the SSR primers CcM-0021 and CcM-1707 showed DNA amplification pattern between F1 hybrid and its parental lines of hybrid pigeon pea ‘ICPH-2671’ these primers can be employed for detection of genetic purity.

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