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201113
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Subject: Seed Science and Technology × End date: 2011 × Start date: 2011 ×
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Now showing 1 - 9 of 13
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    ThesisItemOpen Access
    Effect of Pre Harvest Insecticidal Spray on Seed Yield, Quality and Post Harvest Seed Treatment on Storability in Cowpea (Vigna unguiculata L.) C-152
    (UAS, Dharwad, 2011) Ranganath N. Bangareppanavar; T.A. Malabasari
    An investigation was carried out with two experiments, the field experiment were carried out at ARS, Bagalkot and storage experiment at Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad during 2009- 2010. The field experiment was laid out in factorial RBD to study the effect of preharvest insecticidal spray on seed yield and quality of cowpea. Among the insecticidal spraying, crop sprayed with malathion @ 2 ml/l (I1) recorded significantly maximum number of pods per plant (21.09), pod weight (20.65g), seed yield per plant (3.16g) and per hectare (961kg), 100 seed weight (10.07g) and seed quality parameters with significantly least infected pods (5.54%) and infected seeds/plant (2.66), which was followed by Deltamethrin (I2) and Econeem (I4) as compared to control (I0) irrespective of the stages of insecticidal spray. Where as, spraying of insecticides at 20 and 10 DBH (S3) recorded significantly higher number of pods/plant (19.97), pod weight/plant (20.04g), seed yield/plant (2.85g) and hectare (897kg), 100 seed weight (9.85g) and also seed quality parameters with least infested pods/plant (7.36%) and infected seeds/plant (4.03) as compared to insecticide sprayed at 20 (S1) and 10 (S2) DBH. Where as the interaction effect is found to be non significant for all the parameters except yield. The storage experiment was laid out in CRD with 11 treatments to study the effect of post harvest seed treatment on storabilty of cowpea seed. Among the treatments seeds treated with castor oil @ 5 ml/kg of seed (T2) recorded maximum 100 seed weight (9.50g), germination rate index (18.71), germination (77.40%), root length (12.51cm), shoot length (10.14cm), seedling vigour index (1756) and seedling dry weight (51.73mg) whereas minimum seed infestation (8.30%), loss in seed weight (2.85%) and moisture content (8.93%) as compared to the other treatments and control (T0) at end of 10 months of storage.
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    ThesisItemOpen Access
    Seed Technological Studies on Speciality Corn
    (UAS, Dharwad, 2011) Raut Gajanan Vitthal; Ravi Hunje
    An Investigation was carried out with three experiments for studying the influence of plant population and nutrient management on seed yield and quality of baby corn hybrid at Water and Land Use Management Institute (WALMI) farm, Dharwad, during Kharif 2010. Influence of sieve size grading on seed quality and storage on specialty corn were studied at Seed Quality and Research Laboratory of National Seed Project (crops), University of Agricultural Sciences, Dharwad. Significantly higher seed yield (48.22 q ha-1) was recorded with 200:100:80 kg NPK ha-1 compared to 150:75:37.50 kg NPK ha-1 (41.36 q ha-1). Significantly higher seed yield (48.08 q ha-1) was recorded with spacing of 60 x 25 cm compared to spacing of 60 x 10 cm (38.71 q ha-1). Among interaction application of 200:100:80 kg NPK per ha with spacing of 60 x 25 cm recorded significantly higher seed yield (51.33 q ha-1). Among four genotypes significantly higher seed recovery (95.38 %) and germination (99.32 %) were recorded with the genotype PEHM-2. Significantly higher seed recovery (95.48 %) was recorded in lower sieve size with Top: 10.50 mm X Bottom 3.50 mm. whereas higher germination (99.34 %) was recorded with higher sieve size Top: 10.50 mm X Bottom 6.00 mm. The seeds of PEHM-2 genotype recorded significantly higher germination (88.94 %) compared to the rest of the genotype studied. Among four treatments T3 (Thiram @ 2.5 g kg-1 seed + Malathion @ 2 g kg-1 seed) recorded significantly higher germination (90.13 %) at the end of twelth month of storage period as compared to the rest of the treatments. Higher seed germination was recorded with seeds stored in polythene bag (87.58 %) as compared to cloth bag (85.81 %) at the end of twelve months of storage period.
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    ThesisItemOpen Access
    Investigations on Seed Dropping and Biofertilizer and Calcium Seed Treatments on Crop Growth, Seed Yield, Quality and Storability of Soybean Varieties
    (UAS, Dharwad, 2011) Suresha K.G.; M.N. Merwade
    Two field and laboratory experiments were conducted to find out the effect of manual seed dropping heights and seed treatment with biofertilizers and calcium salts on crop growth, seed yield, quality and storability in soybean varieties in Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad. Field experiment was conducted in split-split design consisted of three soybean varieties viz., JS-335, JS-9305 and DSb-1(with three levels of seed dropping heights viz. no dropping, six feet dropping and nine feet dropping heights and two biofertilizer seed treatments viz. Rhizobium and Rhizobium + PSB. Among three varieties DSb-1 variety recorded higher seed yield (2106.1kg/ha), germination (91.25%), vigour index (3746) and other seed quality parameters compared to JS-9305 and JS-335. Among the dropping heights, higher seed yield (2160.5 kg/ha) with better seed quality traits were recorded in the undropped seeds compared to nine feet dropped seeds. The maximum seed yield (2024.6kg/ha) was recorded in the seed pretreated with rhizobium+PSB compared to Rhizobium alone. The interaction between varieties, seed dropping heights and biofertilizers was found non significant for all the test parameters studied. The second storage experiment was conducted with above said soybean varieties, dropping heights and seed treatment with calcium salts (untreated control, calcium chloride and calcium carbonate) stored under ambient conditions for 12 months period. Among varieties, DSb-1 variety recorded higher germination (33.33%), vigour index (812) and less mechanical damage compared to JS-335 and JS-9305 varieties at the end of 12 months storage period. The undropped seeds have retained higher germination (70.68%), vigour index and other seed quality parameters compared to nine feet dropped seeds during entire storage period. Among seed treatments, calcium chloride treated seeds retained higher germination (34.27%) and other seed quality parameters followed by calcium carbonate compared to untreated seeds at the end of 12 month storage period.
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    ThesisItemOpen Access
    Molecular, Morphological and Chemical Characterization of Tomato (Solanum lycopersicum L.) Genotypes and Influence of Different Organic Manures on Seed Yield, Quality in Tomato Cv. DMT-2
    (UAS, Dharwad, 2011) R.B. Sunnadagudi; R. Gurumurthy
    The laboratory and field experiments were conducted, during kharif, 2010 for identification of tomato genotypes through morphological, chemical and molecular markers and influence of organic manures on seed yield and seed quality in tomato cv. DMT-2 at Seed Quality and Research Laboratory of National Seed Project, and main agricultural research station UAS, Dharwad respectively. Twelve tomato genotypes were grouped into 18 groups based on the seed morphological characters such as seedling leaf color, days to maturity, foliage density, leaf type, exterior color of immature fruit, fruit shape fruit size, exterior color of mature fruit, from pedicel, fruit shoulder shape, skin color ripe fruit, flesh color intensity, fruit cross sectional shape, number of locules, shape pistil scar and fruit blossom end shape. The chemical tests viz., Phenol, modified phenol, Peroxidase, NaOH and KOH tests disabled the grouping of tomato genotypes based on the color response. Genotypes used in this investigation did not exhibit change in seed coat color as well as solution. Based on the seedling growth response to GA3, genotypes were grouped as low, moderate and high response and based on 2,4-D genotypes were grouped as least, moderate and highly affected. Random amplified polymorphic DNA profile for all 12 genotypes was generated with 20 random decamer primers. The highest molecular diversity was observed between the genotypes DMT-3 and DMT-6 and High similarity with Sij 0.99 was observed between genotypes DMT-5 and DM-4. The field experiment consisted of 11 treatments involving different organic manures. Among the treatments recommended dose of fertilizer (T11) recorded significantly superior values over other treatments with respect to growth, yield and seed quality parameters.
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    ThesisItemOpen Access
    Investigations on Growing Condition, Spacing and Calcium Sprays on Seed Yield, Quality and Storability of Tomato (Solanum lycopersicum L.) Seeds
    (UAS, Dharwad, 2011) Harish S.; N.K. Biradar Patil
    Field and laboratory experiments were conducted to find out the effect of growing condition, spacing and calcium sprays on seed yield, quality and storability of tomato seeds in National Seed Unit, UAS, Dharwad. Field experiment was conducted in split-split design consisted of two growing conditions viz., open field and naturally ventilated polyhouse condition with three levels of spacing viz., 60 x 45 , 60 x 60 and 60 x 75 cm and four stages of calcium sprays viz. control, weekly, fortnightly and monthly spray. Between two growing conditions, polyhouse grown condition recorded significantly higher seed yield (477.85 kg/ha), germination (87.91 %) and vigour index (1149) compared to open field. Among the spacings, higher seed yield (465.28 kg/ha) with better seed quality traits were recorded with 60 x 60 cm spacing. The higher seed yield (450.98 kg/ha) was recorded with fortnightly calcium spray. In polyhouse condition, among the calcium sprays, higher 1000 seed weight (2.62 g) and better seed quality traits were recorded with fortnightly calcium spray. Among five pickings, second picking recorded higher germination (96.45 %) and vigour index (1352). The storage experiment was conducted with the seeds produced under two growing condition viz., open field and polyhouse, and six seed treatments viz., control and seed treatment with chemicals like thiram, vitavax power @ 2g/kg of seeds, polymer coating @ 20ml/kg of seeds, thiram @2g + polymer coating @ 20ml/kg of seeds and vitavax power @ 2g + polymer coating @ 20ml/kg of seeds and stored under ambient condition for 6 months period. Between growing conditions, polyhouse grown seeds recorded higher germination (75.35 %) and vigour index (1373) compared to open field at the end of 6 months storage period. Among the seed treatments, vitavax power and polymer coated seeds retained higher germination (76.38 %) and other seed quality parameters.
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    ThesisItemOpen Access
    Effect of Planting Geometry and Foliar Spray of Micronutrients on Plant Growth, Seed Yield and Quality of Bell Pepper (Capsicum annuum L.)
    (UAS, Dharwad, 2011) Dilip Kumar M.R.; T.A. Malabasari
    The field experiment was conducted to study the effect of planting geometry and foliar spray of micronutrients on plant growth, seed yield and quality of bell pepper (Capsicum annuum L.) at Agricultural Research Station, Bagalkot, University of Agricultural Sciences, Dharwad during rabi 2010-2011. The experiment was laid out in split plot design consisting of 15 treatment combinations with 3 spacings as one factor and 5 foliar sprays of micronutrients as another factor, three sprays were given at 30, 45 and 60 days after transplanting. The spacing of 60x45 cm took least number of days to 50 per cent flowering (44.33) and maturity (68.6) and borne more number of fruits per plant (7.50), higher fruit yield per plant (337.05g) and seed yield per plant (7.63g). But spacing of 45x45 cm recorded significantly higher seed yield per ha (352.88 kg).Seed quality parameter like germination (81.25%), seedling vigour index (93.97), seedling dry weight (49.21mg) with lower electrical conductivity (0.37dSm-1) of seed leachate were also observed with spacing of 60 x 45 cm. Among the foliar spray of micronutrients borax (0.5 %) recorded significantly less number of days (43.56) to 50 per cent flowering and to maturity (73.33) with more number of fruits per plant (8.3g) and fruit yield per plant (377.8g). Significantly higher number of seeds per fruit (221.20), seed yield per fruit (1.06g), seed yield per plant (8.63g) and seed yield per ha (342.45kg). Quality parameters like higher germination (83.82%), seedling vigour index (1000.4), seedling dry weight (51.10mg) with lower electrical conductivity (0.36dSm-1) were recorded with borax (0.5%) foliar spray. In terms of economics spacing of 45x45 cm with borax (0.5%) foliar spray gave higher net returns of Rs. 1,96,480 per ha with the cost of seed production of Rs. 88,870 per ha and a Cost Benefit Ratio of 1:3.21.
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    ThesisItemOpen Access
    Influence of Insect Attractants, Micronutrients and Growth Regulators on Growth, Seed Yield and Quality in Lucerne (Medicago sativa L.)
    (UAS, Dharwad, 2011) Sreedhara K.; Krishna A.
    The field experiment was conducted during Rabi season of 2010-11 at the Main Agricultural Research Station, University of Agriculture Sciences, Dharwad. The experiment consisted of eight treatment combinations involving two insect attractants, viz., Jaggery solution @ 2% (A1), Commercial attractant (Bee-Q @ 0.175%) (A2), Two micronutrients (M) viz., Boron @ 0.8% (M1), Molybdenum @ 0.05% (M2) and Two growth regulators (G) viz., Gibberellic acid (GA3) @ 50 ppm (G1), Naphthalene Acetic Acid (NAA) @ 50 ppm (G2). The results indicated that and it was laid out in RBD with factorial concept. Among the insect attractants sprayed, Bee-Q recorded significantly higher plant height (87.37 cm) compared to Jaggery solution (82.29cm). Application of Boron @ of 0.8 per cent as a foliar spray recorded significantly higher plant height (84.98 cm) compared to the Molybdenum at the rate of 0.05 per cent application. Among the growth regulators used Gibberellic acid @ 50 ppm sprayed at the time of 50% flowering showed significantly higher plant height than the Naphthalene acetic acid @ 50 ppm. The interaction effect between insect attractants, micronutrients and growth regulators exhibited significant variation on pod set per cent. The treatment combination of A1M1G1 (Jaggery solution + Boron + GA3) found significantly superior over all other treatment combinations. Significantly higher seed yield per ha (268 kg) was noticed with foliar application of Bee-Q when compared to Jaggery solution (227 kg) with the extent of 18% of increase. Plots sprayed with Boron recorded maximum seed yield compared to the Molybdenum spray. Among the growth regulators, GA3 @ 50 ppm recorded maximum seed yield when the crop was sprayed at 50 per cent flowering stage. Among the insect attractants sprayed, Bee-Q recorded significantly higher test weight (2.62 g), germination percentage (91.16) compared to Jaggery solution.
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    ThesisItemOpen Access
    Effect of Seed Treatments and Containers on Storability of Jute Varieties (Corchorous olitorius)
    (UAS, Dharwad, 2011) Kiran Kumar M.S.; M.B. Kurdikeri
    The storage potential of JRO 204 and JRO 524 jute seeds was undertaken with seven seed treatments viz. captan @ 2g per kg seeds, chlorox @ 2g per kg seeds, boric acid @ 2 g per kg seeds, calcium chloride @ 2 g per kg seeds, tannic acid @ 2 g per kg seeds, ascorbic acid @ 2 g per kg seeds, control and were packed in cloth bag and polythene bag (700 gauge) and stored under ambient conditions for 12 months. The JRO 524 jute variety recorded higher germination and seedling vigour parameters compared to the JRO 204 at the end of 12 months of storage. Among the seed treatments, seed treated with tannic acid recorded higher germination (84.81%) and other seed quality parameters at the end of storage period. Seeds packed in polythene bag recorded higher germination (76.28%), vigour parameters with lower electrical conductivity and moisture content as compared to seeds stored in cloth bag at the end of storage period. In the interaction effect of varieties and treatments (VxT), JRO 204 and JRO 524 seeds treated with tannic acid recorded significantly satisfactory higher germination (83.38% and 86.23% respectively) as per minimum seed certification standards and other vigour parameters throughout the storage period. In the interactions between varieties and packaging materials (VxC), JRO 524 variety seeds packed in polythene bag was superior in all the seed quality parameters compared to cloth bag. In the interactions of seed treatments and containers (TxC), seed treated with tannic acid and stored in polythene bag recorded higher satisfactory germination (85.61%) with higher vigour parameters at the end of storage period. Among the interactions of varieties, seed treatments and containers (VxTxC), JRO 524 seeds treated with tannic acid and packed in polythene bag recorded higher satisfactory germination (87.36%) and other seed quality parameters at the end of storage period.
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    ThesisItemOpen Access
    Studies on Effective Methods for Synchronization of Flowering in Parents of DMH-2 Hybrid Maize
    (UAS, Dharwad, 2011) Yegappa S. Hipparagi; V.K. Deshpande
    The present investigation was carried out to study the influence of seed treatment with hydration, gibberellic acid and soil application of additional nitrogen in combination with urea spray to female parent (CI-4) and only Abcisic acid seed treatment to male (KDMI-10) on synchronization of flowering between the parental lines, seed yield and quality of hybrid maize DMH-2 at MARS, UAS Dharwad during kharif 2010. Female parent flowered late by six days than male with simultaneous sowing. Among the different techniques to achieve synchronization of flowering, pre sowing seed hydration(6hrs) + 10 % additional N soil application to female parent resulted in better synchronization of flowering (1.34 days) and resulted in significantly highest seed yield (38.33 q/ha) over simultaneous sowing control (23.07 q/ha). This treatment also hastened the first flowering in female parent (47.33 days) and increased the cob length, cob weight (163.00 g/ plant), number of seeds rows per cob (14.00), seed weight per cob (132.07 g), seed set % (96.45), 100 seed weight (29.79 g) and fodder yield (3.33 q) compared to other treatments. The results of another field experiment conducted during 2010-11, to study the effect of time of sowing on flowering behavior of parental lines of DMH-2 maize hybrid revealed that, sowing dates influenced the flowering behavior of the parental lines. Sowing in mid July caused early initial and 50% flowering by 4 days and 3 days between female and male parents respectively and the difference was gradually increased up to January 1st sowings. None of the sowing did not give cent per cent synchrony and the flowering difference (50%) ranged from 3 to 11 days during June 1st 2010 to January 15th 2011 under Dharwad condition.