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University of Agricultural Sciences, Dharwad

The University of Agricultural Sciences, Dharwad was established on October 1, 1986. The University has 5 Colleges, 27 Research Stations, 6 Agriculture Extension Education Centers, 6 Krishi Vigyan Kendras and ATIC. The University has its jurisdiction over 7 districts namely Bagalkot, Belgaum, Bijapur, Dharwad, Gadag, Haveri, and Uttar Kannada in northern Karnataka. Greater diversity exists in soil types, climate, topography cropping and farming situations. The jurisdiction includes dry-farming to heavy rainfall and irrigated area. Important crops of the region include sorghum, cotton, rice, pulses, chilli, sugarcane, groundnut, sunflower, wheat, safflower etc. The region is also known for many horticultural crops. Considerable progress has been registered in the field of education, research and extension from this University.

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2010 - 201878
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Subject: Seed Science and Technology × Start date: 2010 × End date: 2018 ×
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Now showing 1 - 9 of 78
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    ThesisItemOpen Access
    Effect of Season and Plant Growth Regulators on Seed Yield and Quality in Dolichos Bean [Lablab purpureus (L.) Sweet]
    (University of Agricultural Sciences, Dharwad, 2018-04) Pramoda; Sajjan, Ashok S.
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    ThesisItemOpen 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.
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    ThesisItemOpen Access
    Seed Technological Approaches to Enhance Seed Yield and Quality In Perennial Fodder Sorghum (Sorghum bicolor L.)
    (University of Agricultural Science, Dharwad, 2015-06) Patil, Bapurayagouda; Merwade, M.N.
    The field experiments were conducted at Main Agricultural Research Station, Dharwad during kharif 2012-13 and 2013-14 and laboratory experiment were conducted in Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad during 2013-14. The results revealed that, the inter row spacing of 30 cm recorded significantly higher seed yield (657.6 kg ha-1) as compared to 45 and 60 cm row spacings. In contrary, inter row spacing of 60 cm recorded significantly higher seed quality parameters as against to other row spacings. Application of 150:60:40 NPK kg ha-1 significantly higher seed yield (641.6 kg ha-1) and seed quality parameters. Whereas, the treatment combination of 30 cm row spacing and 150:60:40 NPK kg ha-1 recorded higher seed yield. The early sowing of crop in July IV week recorded significantly higher seed yield (593.4 kg ha-1), seed germination (39.67%) and seedling vigour index (1065) as compared to later sowings. The intra spacing of 45 x 10 cm recorded higher seed yield (492.4 kg ha-1) as against 45 x 15 and 45 x 20 cm spacings. The combination of July IV week sowing and 45 x 10 cm intra row spacing recorded higher seed yield (598.8 kg ha-1) as compared to other treatment combinations. Among the number of cuttings, uncut crop (control) recorded significantly maximum seed yield (576.4 kg ha-1), seed germination (40.00%) and seedling vigour index (1126) as compared to one, two, three and four cuttings. Seeds treated with KNO3 @1.0 % for 2 hrs found effective in breaking seed dormncy of perennial fodder sorghum cv. CoFS-29. It was recorded significantly higher seed germination (82.33%), seedling vigour index (2303), lesser dormant seeds (5.67 %) and dead seeds (7.00%) at the end of ten months of storage period which was followed by Thiourea @1.0 % for 2 hrs.
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    ThesisItemOpen Access
    Studies on Seed Production Techniques, Storability and Morphological Characterization of Fodder Maize (Zea Mays L.)
    (University of Agricultural Science, Dharwad, 2015-06) Patil, Shivagouda; Merwade, M.N.
    Three field experiments were conducted in fodder maize during 2013-14 and 2014-15 at MARS, UAS, Dharwad on effect of spacings, fertility levels, micronutrient application methods on growth, seed yield and quality traits and morphological characterization of thirteen genotypes and laboratory experiment was also conducted on effect of chemical and botanical seed treatments on seed storability under ambient conditions for twelve months. In first experiment, the combined effect of 60 x 30 cm row spacing and 150:100:50 kg N, P2O5, K2O ha-1 recorded significantly maximum seed yield (31.58q/ha) as against 75 x 30 cm and 75:100:50 kg N, P2O5, K2O ha-1 + 50% N supplemented through FYM (27.89 q/ha). Whereas, seed germination (98.50%), seedling vigour index (4164) were highest in 75 x 30 cm and 150:100:50 kg N, P2O5, K2O ha-1 as against 60 x 30 cm and 75:100:50 kg N, P2O5, K2O ha-1 + 50% N supplemented through FYM (93.50% and 3559, respectively). Soil application of Zinc sulphate @ 25 kg ha-1 + foliar spraying of 0.2% boron at 50 % flowering along with 150:100:50 kg N, P2O5, K2O ha-1 (RDF) recorded significantly highest seed yield (122.38g) per plant and (32.57 q.) hectare, seed germination (99.17%) due to better growth, flowering and yield components. Seeds treated with vitavax power @ 3 gkg-1 of seeds retained higher 100 seed weight (29.70g), germination (90.50%), seedling vigour index (2891) and least seed infection (5.55%) as against untreated control seeds throughout twelve months ambient storage period. Thirteen fodder maize genotypes were grouped based on DUS guidelines as presence and absence of brace root anthocynin colouration, straight and drooping leaf attitude, silk colour, dent and flint grain types, white and orange seed colour. Among different characters studied, anthocynin colouration of brace roots was distinctly absent in the MFM-07-03, MFM-07-07 and MFM-07-11 genotypes over other genotypes.
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    ThesisItemOpen Access
    STUDIES ON FLORAL TRAITS AND SEED PRODUCTION TECHNIQUES OF KARNATAKA RICE HYBRID-4
    (University of Agricultural Sciences, Dharwad, 2015-04) BAGEWADI, SUCHITA M.; DESHPANDE, V. K.
    An investigation entitled “Studies on floral traits and seed production techniques of Karanataka Rice Hybrid-4” was carried out with two field experiments. Seven CMS lines and restorer line with hybrid combinations were evaluated for their floral traits and flowering behaviour. CMS lines IR-68897A (16.250), COMS-23A (34.35 cm), CRMS-32A (32.350) IR- 79156A (79.09%) and IR-79156A (30.33 cm) showed higher mean value for flag leaf angle, flag leaf length, angle of glume opening, panicle exsertion and length of panicle. While CB174R (102.45 cm), CB817R (15.490) and KMR-3 (25.43 cm) restorer lines were better in exhibition of plant height, angle of glume opening and length of panicle. Among these COMS- 23A x CB174R followed by CRMS-32A x MSN-36R shown best performance for seed set in upland ecosystem. To enhance seed setting different seed production techniques were imposed on hybrid seed production of KRH-4. Planting ratio of 4:2 recorded the highest seed set (30.88%) and seed yield (24.77q ) with spraying GA3 + rope pulling followed by GA3 + Flag leaf clipping. The highest F1 seed yield (24.77q/ha) of KRH-4 was obtained with an application of GA3 @ 60 g/ha + rope pulling which enhanced the maximum number of effective tillers, the highest number of grains/panicle, panicle exsertion rate and outcrossing rate. The untreated control produced lowest seed yield (8.72q/ha) was produced without application of GA3 i.e., control. The row ratio of 6:2 and 8:2 produced the highest (20.68 q/ha) and the lowest (18.16q/ha) F1 seed yield, respectively. The interaction between GA3 and row ratio of restorer and CMS lines was significant for F1 seed yield. The highest F1 seed yield (25.76q/ha) was obtained with the application of GA3 @ 60 g/ha at the row ratio of 6:2 (A: R). The lowest seed yield (4.60q/ha) was recorded without any seed production techniques (control) at row ratios of 8:2.
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    ThesisItemOpen Access
    EFFECT OF BIOPELLETING ON SEED QUALITY, STORABILITY AND SEED YIELD IN SOYBEAN (Glycine max L.)
    (University of Agricultural Sciences, Dharwad, 2015-07) SIDDARAJU, M. K.; HUNJE, RAVI
    Field and laboratory experiments were conducted to study the effect of biopelleting on seed quality, storability and seed yield in soybean during 2014-2015. Seeds were pelleted with biofertilizers (Rhizobium Sb-120 and Pseudomonas striata) along with a filler material and maida (Starch gruel @ 10 %) as a binding material which were kept in HDPE bag and stored at ambient condition. The biopelleting treatments had a significant effect on seed yield, quality and storability over control. The seeds pelleted with Rhizobium Sb-120 @ 50 g kg-1 + Pseudomonas striata @ 50 g kg-1 seed recorded higher germination (91.67%), field emergence (87.67%), plant height (64.88 cm), number of branches per plant (5.73), number of trifoliate leaves (24.70) and less number of days to 50% flowering (38.33), over the unpelleted seeds (81.33%, 56.87 cm, 4.23, 19.13 and 41.67 days, respectively). Maximum seed yield (21.41 q/ha) was recorded due to biopelleting with the Rhizobium Sb-120 @ 50 g kg-1 + Pseudomonas striata @ 50 g kg-1, which is 15.98 per cent more over the control. Seeds biopelleted with Rhizobium Sb-120 @ 50 g kg-1 + Pseudomonas striata @ 50 g kg-1 recorded significantly higher germination percentage (71.75%), root length (14.18 cm), shoot length (12.49 cm), seedling length (26.67 cm) seedling vigour index.
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    ThesisItemOpen Access
    STUDIES ON INDUCTION OF SEED DORMANCY IN GREEN GRAM (Vigna radiata L. Wilczek)
    (University of Agricultural Sciences, Dharwad, 2015-06) MENEDAL, SNEHA M.; VYAKARANAHAL, B. S.
    The field experiment was conducted to study the seed dormancy induction in green gram genotypes during kharif 2014-15 at MULLaRP Scheme, University of Agricultural Sciences, Dharwad. Storage studies were carried out to test the artificially induced seed dormancy period in the seed research laboratory of National Seed Project, Dharwad, Karnataka. This experiment involved different concentrations of maleic hydrazide (1000, 2000 and 3000 ppm), paclobutrazol (100, 200 and 300 ppm) and PEG 6000 (18% and 26%) in three green gram genotypes viz., DGG -1, DGGV-2 and Selection 4. The result of field experiment revealed that among all genotypes and chemicals, foliar application of maleic hydrazide in DGGV-2 at flowering and pod initiation gave the higher number of branches (5.94), pods per plant (16.51), pod length (13.46cm), seeds per pod (14.77), seed setting percent (100), 1000 seed weight (41.52g), pod yield per hectare (922.38kg) and seed yield per hectare (706.78 kg/ha). It also recorded higher dormant seed (65 %), electrical conductivity (0.73dS/m) and lowest germination (35%), root length (9.82cm), shoot length (9.00cm), seedling vigour index (655), seedling dry weight (46.41mg), rate of germination (18.79%), seed infestation (0.00%) and seed infection (0.00%). In storage studies the seeds treated with maleic hydrazide @ 1000 ppm in DGGV-2 recorded lower germination (40.85 %), root length (9.85cm), shoot length (9.00 cm), seedling vigour index (770), seedling dry weight (46.41mg), less seed infestation (0.51%), seed infection(0.00%), rate of germination (18.79%), with higher dormant seeds (59.15%) and electrical conductivity (0.77dSm-1) which was followed by paclobutrazol @ 300 ppm (40.85%, 9.85 cm, 8.82 cm, 1088, 46.91 mg, 0.61%, 0.00%, 17.01%, 42.75 % and 0.76 dSm-1 respectively). These results indicate that 1000 ppm of maleic hydrazide treatment improved the seed yield, quality and storability in green gram and also higher percent of dormant seeds.
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    ThesisItemOpen Access
    STANDARDIZATION OF SEED PRODUCTION TECHNOLOGY AND MOLECULAR CHARACTERIZATION OF HYBRID SUNFLOWER (DSFH-2)
    (University of Agricultural Sciences, Dharwad, 2015-06) SHANKRAYYA; VYAKARANAHAL, B. S.
    The field experiments were conducted to study the effect of staggered sowing on flowering synchrony, seed yield and quality of sunflower hybrid DSFH-2 consisted of seven staggered sowing treatments with three replications. Significantly higher head diameter (13.15 cm), number of seeds per head (946.17), head dry weight (86.78 g), number of filled seeds per head (783.85) and its weight (35.07 g), seed set (82.76 %), seed weight per plant (38.50 g) and seed yield per hectare (12.38 q/ha) was significantly higher when the male parent was sown two days later to the female parent followed by four later sowing. Effect dates of sowing on flowering behaviour of parental lines of sunflower hybrid DSFH-2 nine different sowing dates with three replications. The results revealed that male parent (RHA-16) has to be sown one to two days later to female parent (CMS-234A) between July to September and January to March sowing whereas, two to three days later to female parent in October to December sowing. Effect of foliar application of growth regulators and micronutrients on flowering synchrony, seed yield and quality of sunflower hybrid DSFH-2 consisted of foliar spray of ten growth regulators and micronutrient treatments with three replications. Significantly higher head diameter (13.03 cm), number of seeds per head (938.50), head dry weight (88.25 g), number of filled seeds per head (794.15) and its weight (34.20 g), seed set (84.19 %), seed weight per plant (40.77 g), seed yield per hectare and also higher seed quality parameters like germination (95.00 %), seedling vigour index (3072), shoot length (17.43 cm), root length (14.90 cm), seedling length (32.33 cm), dry weight of seedling (0.44 g), volume weight of seed (46.82 g) 100 seed weight (4.72 g), oil content (37.47 %), field emergence (89.50 %) and lower values of electrical conductivity (0.355 dSm-1) were significantly highest (11.73 q/ha) due to foliar application of GA3 @ 50 ppm (T6) which was followed by boron @ 0.2 per cent (T5) (11.49 q/ha) and ZnSO4 @ 0.5 per cent (T9) (11.24 q/ha) respectively. Sunflower hybrids could be distinguishable clearly from their parental lines using SSR markers. HA3640 and HA4011 can be confidently used for identification of DSFH-2, but the SSR marker ORS 691 can be used for identification as well as for seed genetic purity test of DSFH -3.
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    ThesisItemOpen Access
    EFFECT OF NUTRIENT MANAGEMENT AND POPULATION DENSITY ON SEED YIELD AND QUALITY OF SUNFLOWER (Helianthus annuus L.) HYBRID DSFH-3
    (University of Agricultural Sciences, Dharwad, 2015-06) BADALINGANNANAVAR, SHANMUKHAPPA; MALABASARI, T. A.
    The investigation was undertaken at Agricultural Research Station, Bagalkote, University of Agricultural Sciences, Dharwad during summer season 2014-15 to study the nutrient management and population density on seed yield and quality of sunflower hybrid DSFH-3. Application of RDF (60:75:60 NPK kg/ha + 8 t/ha FYM) along with 30 kg N recorded higher plant height (33.26, 141.61 and 142.82 cm) at 30, 60 DAS and at harvest, respectively over application of FYM 8 t per ha without NPK. Similar trend was also noticed in number of leaves where higher number of leaves were noticed with the application of RDF (60:75:60 NPK kg/ha + 8 t/ha FYM) along with 30 kg N. The application of 30 kg N along with RDF recorded higher capitulum diameter (12.43 cm), volume weight (47.01 g), processed seed yield (1180 kg/ha) and 100 seed weight (4.73 g) over application of FYM 8 t per ha without NPK. Significantly higher seed quality parameters like seed germination (95.16%), vigour index (3667), root length (18.61 cm), shoot length (19.90 cm) and seedling dry weight (0.31 g) were recorded with application of RDF + 30 kg N over application of FYM 8 t per ha without NPK. Application of RDF (60:75:60 NPK kg/ha + 8 t/ha FYM) + 30 kg N and with a spacing of 60 x 45 cm is more effective in increasing the hybrid seed yield during sunflower hybrid seed production of DSFH-3. Application of RDF (60:75:60 NPK kg/ha + 8 t/ha FYM) + 30 kg N and with a spacing of 60 x 45 cm recorded higher net returns (Rs. 327705) and B:C ratio (6.8) compared to other treatments.