Thumbnail Image

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.

Browse

Reset filters
Subject: Agronomy × Thesis Type: Ph.D ×
Reset filters

Search Results

Now showing 1 - 9 of 125
  • Thumbnail Image
    ThesisItemOpen Access
    Bio-Efficacy and Phyto-Toxicity of Pre and Post-Emergence Herbicides on Groundnut (Arachis hypogaea L.) and Soybean [Glycine max (L.) Merrill]; and Residual Effect on Succeeding Crops
    (University of Agricultural Sciences, Dharwad, 2018-07) Shilpa H.D.; Malligawad, Lokanath H.
    The field experiment was conducted at Main Agricultural Research Station. University of Agricultural Sciences, Dharwad on medium black clay soil during two consecutive years (2015-16 and 2016-17) in kharif-rabi sequence. Results indicated that pre-emergence application of alachlor 50 EC, pendimethalin 30 EC, butachlor 50 EC, pendimethalin 38.7 CS and oxyfluorfen 23.5 EC effectively controlled annual grassy and broad leaved weeds in groundnut/soybean and had no residual toxicities on all the succeeding crops. Post-emergence application of quizalofop ethyl 5 EC, propaquizafop 10 EC and fenoxaprop-p-ethyl 9 EC effectively controlled only annual grassy weeds and they did not show any residual toxicities on all the succeeding crops. On the contrary, post-emergence application of imazethapyr 10 SL (100 g/ha) although suppressing the growth and development of annual grassy and broad leaved weeds, but resulted in residual toxicities in succeeding crops. The severity of imazethapyr residual toxicity on succeeding crops was greater on grain amaranth > sorghum > wheat > maize > safflower > chickpea. Yield components, dry pod weight/plant, total number of pods/plant, 100 dry pod weight in groundnut and; total number of pods/plant, seed weight/plant and 100 seed weight in soybean and B:C ratio were more in treatments which received pre-emergence herbicides, post-emergence herbicides and weed free check treatment over weedy check treatment and treatment which received post-emergence application of imazethapyr 10 % SL @ (100 g/ha). Significantly lower dehydrogenase (μg TPF formed/g soil/d ) phosphatase (pnp formed/g soil/h) and urease activity (μg NH4-N formed/g soil/d), in preceding as well as succeeding crops was recorded with post-emergence application of imazethapyr 10 SL (100 g/ha).
  • Thumbnail Image
    ThesisItemOpen Access
    Response of Turmeric (Curcuma longa l.) Varieties to Methods of Irrigation and Graded Levels of Fertilizer
    (University of Agricultural Science, Dharwad, 2017-05) Satyareddi, Sunil A.; Angadi, S.S.
    A field experiment was conducted during 2012-13 and 2013-14 to study the response of turmeric varieties to methods of irrigation and graded levels of fertilizer at Agricultural Research Station, Kalloli, using split-split plot design replicated thrice. Treatment comprised of irrigation methods in main plot (Drip, Ridges and furrow and Sprinkler each at 50 per cent depletion of available soil moisture-DASM), genotypes in sub plot (cv. Cuddapah and cv. Pratibha and graded levels of fertilizer in sub-sub plot (180:90:90, 225:112.5:135 and 270:135:180 kg N:P2O5:K2O ha-1) with one control (Furrow irrigation at weekly interval with cv. Cuddapah and application of 180:90:90 kg N:P2O5:K2O ha-1). Drip irrigation at 50 per cent DASM recorded significantly higher cured finger rhizomes (3.67 t ha-1) and curcumin yield (188.2 kg ha-1) and water use efficiency (WUE) of 258.5 kg ha-cm-1 with water saving of 31.6 per cent over control. Cudappah variety was superior over cv. Pratibha in cured finger rhizomes yield (3.59 t ha-1). Pratibha variety resulted in higher curcumin content (6.30 %) and curcumin yield (201.1 kg ha-1). Application of 270:135:180 kg N:P2O5:K2O ha-1 resulted in higher cured finger rhizomes (3.51 t ha-1) and curcumin yield (178.5 kg ha-1) which was on par with 225:112.5:135 kg N:P2O5:K2O ha-1. Drip irrigation at 50 per cent DASM with cv. Cudappah and 270:135:180 kg N:P2O5:K2O ha-1 recorded significantly higher cured finger rhizomes yield (4.07 t ha-1) and WUE (282.4 kg ha-cm-1). Drip irrigation at 50 per cent DASM with cv. Pratibha and 270:135:180 kg N:P2O5:K2O ha-1 recorded higher curcumin yield (241.5 kg ha-1), B-C ratio (2.71) and net return ( 2.83 lakh ha-1) which was on par with drip irrigation at 50 per cent DASM with 225:112.5:135 kg N:P2O5:K2O ha-1 cv. Pratibha and cv. Cudappah. Results indicated that irrespective of the varieties, drip irrigation with application of 225:112.5:135 kg N:P2O5:K2O ha-1 resulted in higher yield and economics.
  • Thumbnail Image
    ThesisItemOpen Access
    Management of Lodging in Dicoccum Wheat Using Plant Growth Regulators
    (University of Agricultural Science, Dharwad, 2017-05) Guled, Sujatha M.; Aravindkumar, B.N.
    Two field experiments were conducted during rabi season of 2009 and 2010 in deep vertisol at Agricultural Research Station, Madurakhandi of Jamakhandi taluka, Bagalkot district, UAS, Dharwad. In the first experiment it was aimed to induce lodging tolerance using growth regulators to enhance yield in dicoccum wheat varieties (DDK-1029 and Mudhol local) in a factorial design with three replications. In the second experiment, it was planned to identify a critical crop growth stage susceptible to artificial lodging leading to yield loss and yield structure modification in dicoccum wheat variety Mudhol local in a split plot design with main plot having degrees of artificial lodging (450 and 900) at four feekes stages (FS 10.3, 10.52, 11.3 and 11.2) and a control. Treatment combinations were replicated thrice. In the first experiment, the growth regulator ethephon @ 30 ppm significantly increased the grain yield (2,700 kg ha-1) compared to control (1,910 kg ha-1) by significantly reducing the plant height (70.3 cm), stem length (60.60 cm), but, recorded higher number of productive tillers (390 m2), test weight (37.8 g) and harvest index (42.3 %). The interaction of growth regulator and genotypes showed that, use of ethephon at 30 ppm recorded significantly higher grain yield (2,780 kg ha-1), straw yield (3.96 t ha-1), panicle weight (92.0 g plant-1) and harvest index (47.5%) in DDK-1029 than Mudhol local. In the second experiment, between degrees of artificial lodging, 450 recorded significantly higher grain yield (1,987 kg ha-1) compared to 900 (1,796 kg ha-1). Among stages, artificial lodging at mealy ripe stage gave significantly lower grain yield of 1,681 kg ha-1 compared to before heading stage (2,201 kg ha-1) and conventional practice (2,082 kg ha-1). The interactions between degrees and stages of artificial lodging showed that the grain yield with 450 compared to 900 was significantly higher at before heading (2385 kg ha-1), but, it was on par with conventional treatment (2,082 kg ha-1).
  • Thumbnail Image
    ThesisItemOpen Access
    Moisture and Nutrient Dynamics in Maize Based Cropping System Through Resource Conservation Techniques
    (University of Agricultural Science, Dharwad, 2016-02) Priya H. R.; G. B., Shashidhara
    An investigation to study the moisture and nutrient dynamics of maize based cropping system through resource conservation techniques was carried out at Main Agricultural Research Station, Dharwad during kharif and rabi season of 2013-14 and 2014-15. The experiment comprising two vertical strips namely, kharif maize was grown with and without mulch followed by four rabi crops (wheat, safflower, chickpea and sorghum) were sown in each horizontal strips and sub plots with and without mulch to all rabi crops. Two years pooled data indicated that maize grown with mulching practices recorded significantly higher grain yield of 8345 kg ha-1. The yield parameters viz., grain weight per plant (172.5 g), cob length (21.09 cm), test weight (40.83 g) and also the uptake of nutrients viz., nitrogen (245.06 kg ha-1), phosphorous (34.30 kg ha-1) and potassium uptake (219.51 kg ha-1), WUE (14.03 kg/ha.mm), gross returns (` 1,09,316 ha-1) and net returns (` 74,021 ha-1) were also higher with mulching treatment as compared to without mulching practices. The available moisture per cent was 90.01 at sowing (0-15 cm depth) with stored moisture of 144.73 mm/0.9 m depth and the available moisture was maintained near field capacity till harvest (from 25th to 43rd standard week). During 2014, the available moisture range was 95.75 to 70.80 per cent from sowing to harvest. Wheat, safflower, chickpea and sorghum yields were increased to an extent of 71.44, 44.97, 35.12 and 33.59 per cent, respectively in both season mulch as compared to without mulch during 2013-14. However, during 2014-15, it was 25.34, 37.06, 38.89 and 63.46 per cent increase over without mulch, respectively. At the time of sowing (45th standard week), the moisture was uniformly distributed throughout the soil profile up to 90 cm depth (150 mm /0.9 m depth) it was ranged from 25.45 to 28.88 per cent (i.e., 59.05 to 61.79 per cent available moisture) during 2013 and similar type of uniform distribution was observed during 2014 also (26.33 to 27.91 % i.e., 48.03 to 70.41 % ASM). At the time of harvest during 2013-14, the crop almost reached wilting stage up to 60 cm depth. The situation was different in 2014-15, at the time of sowing the stored moisture ranged from 154 to 168.60 mm at 0.9 m depth in mulched plot as compared to without mulch plot. At harvest, more than 90 mm/0.9 m depth was found in mulched plot and it was 70 to 80 mm/0.9 m in non mulch plot, it was due to two good rains received after sowing. Growing of maize-chickpea with both season mulch treatment recorded higher et returns and B: C ratio (` 97,657 ha-1 and 2.61) followed by maize-safflower (` 94,147 ha-1 and 2.74) as compared to other systems.
  • Thumbnail Image
    ThesisItemOpen Access
    Response of Compact Cotton Genotypes to Graded Levels of Fertilizer Under Varied Planting Density and Defoliator
    (University of Agricultural Science, Dharwad, 2015-11) Tuppad, Giramallappa B.; Shashidhara, G. B.
    Field experiments were conducted under rainfed conditions at Main Agricultural Research Station, UAS, Dharwad during 2012-13 and 2013-14. One experiment consisted of three genotypes (RAH-274, SC-2028-22 and SC-7-58) as main plot, four spacings (45x10 cm, 45x15 cm, 60x10 cm and 60x15 cm) as sub plots and three fertilizer levels (80:40:40, 120:60:60 and 160:80:80kg N:P2O5:K2O/ha) under sub sub plots. Cotton genotype, RAH-274 recorded significantly higher seed cotton yield (2017 kg/ha) which was 7.5 per cent and 16.4 per cent higher over SC-2028-22 (1866 kg/ha) and SC-7-58 (1685 kg/ha), respectively. Spacing of 45x15 cm produced significantly higher seed cotton yield (2028 kg/ha) compared to rest of the spacings. Application of 160:80:80 produced significantly higher seed cotton yield (2063 kg/ha) compared to 120:60:60 kg N:P2O5:K2O/ha (1871 kg/ha) and 80:40:40 kg N:P2O5:K2O/ha (1635 kg/ha). Interaction of RAH-274 at spacing of 45x15 cm with higher level of fertilizer (160:80:80 kg N:P2O5:K2O/ha) recorded significantly higher seed cotton yield (2430 kg/ha), gross returns (.109233/ha), net returns (.75704/ha) and B:C (3.26) over other interactions. Another experiment during 2013-14 to study the effect of defoliator application on cotton genotypes under varied geometry. Application of Ethrel @ 2000 ppm recorded significantly higher seed cotton yield (2086 kg/ha) with an increase of 3.7 per cent and 8.8 per cent over Dropp Ultra @ 200 ml/ha (2009 kg/ha) and control (1902 kg/ha), respectively. The significantly higher leaf defoliation was recorded with Ethrel @ 2000 ppm (83.2 %) than Dropp Ultra @ 200 ml/ha (76.2 %) and control (45.3 %) with significantly lower number of leaves (1.2 leaves/plant) and leaf area (3.01 dm2/plant) at 18 days after defoliator spray. The fibre quality parameters were influenced by genotypes and values were within specified range. Interaction of RAH-274 at spacing of 45x15 cm with application of Ethrel @ 2000 ppm recorded significantly higher seed cotton yield (2241 kg/ha), boll opening (99.3 %), gross returns (1,00,830/ha), net returns (67,910/ha) and benefit cost ratio (3.06) over rest of interactions.
  • Thumbnail Image
    ThesisItemOpen Access
    AGROTECHNIQUES TO ENHANCE KABULI CHICKPEA (Cicer arietinum L.) PRODUCTIVITY IN NORTHERN TRANSITIONAL ZONE OF KARNATAKA
    (University of Agricultural Sciences, Dharwad, 2003) MANSUR, CHIDANAND P; PALLED, Y B
    ABSTRACT NOT AVAILABLE
  • Thumbnail Image
    ThesisItemOpen Access
    INTEGRATED NUTRIENT MANAGEMENT IN RICE - SOYBEAN CROPPING SYSTEM AND MANAGEMENT OF LATE TRANSPLANTED RICE UNDER HILL ZONE
    (University of Agricultural Sciences, Dharwad, 2001) CHANNABASAPPA, K S; PRABHAKAR, A S
    ABSTRACT NOT AVAILABLE
  • Thumbnail Image
    ThesisItemOpen Access
    INTEGRATED NUTRIENT MANAGEMENT IN SUNFLOWER WHEAT SEQUENCE CROPPING IN NORTHERN TRANSITIONAL ZONE OF KARNATAKA
    (University of Agricultural Sciences, Dharwad, 2000) PALI, G P; HALIKATTI, S I
    ABSTRACT NOT AVAILABLE
  • Thumbnail Image
    ThesisItemOpen Access
    LAND SUITABILITY EVALUATION OF MAJOR SUGARCANE GROWING SOILS OF KARNATAKA
    (University of Agricultural Sciences, Dharwad, 1999) NAIDU, L G K; HUNSIGI, GURURAJ
    ABSTRACT NOT AVAILABLE