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2014 - 201670
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Subject: Agronomy × End date: 2016 × Start date: 2014 × Type: Thesis × Thesis Type: M.Sc ×
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Now showing 1 - 9 of 70
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    ThesisItemOpen Access
    Performance of Upland Paddy (var. Mugad siri) to Phosphorus Levels, Nanoparticles and PSB
    (University of Agricultural Science, Dharwad, 2016-09) Jamadar, Ashpakbeg M.; Aravind kumar, B.N.
    A pot experiment was conducted to study the “performance of upland paddy (var. Mugad siri) to phosphorus levels, nanoparticles and PSB” during kharif 2015 at MARS, UAS, Dharwad. The treatments comprised three levels of phosphorus (25,37.5 and 50 kg ha-1), foliar applications of nanoparticles viz., Zinc oxide (ZnO-500 ppm) and Titanium dioxide (TiO2-50 ppm) and phosphorus solubilizing biofertilizer (PSB) application (seed treatment with PSB and without PSB) and absolute control. The experiment was laid out in a complete randomized design with three replications. Among various phosphorus levels, 100 % RDP @ 50 kg ha-1 recorded significantly higher grain yield (26.86 g plant-1) and yield parameters like panicle length (20.83 cm), panicle weight (24 g plant-1), productive tillers (15.33), test weight (17.86 g), filled grains per panicle (97.33) and straw yield (33.29 g plant-1). Growth parameters viz., plant height, number of tillers, leaf area, SPAD value and total dry matter at different phenological stages, were also significantly higher. Between the nanoparticles, significantly higher grain yield (22.13 g plant-1) and straw yield (26.72 g plant-1) were observed in ZnO at 500 ppm. An increase of 14.7 per cent in grain yield was observed by application of nano zinc over nano titanium. Similarly application of PSB, also recorded significantly higher grain yield (23.03 g plant-1) and yield parameters with seed treatment over no seed treatment. An increase of 25 per cent in grain yield was observed by seed treatment with PSB over without PSB seed treatment. Among different treatment combinations, significantly higher grain yield (30.36 g plant-1) was recorded in 100 % RDP @ 50 kg ha-1 with foliar spray of ZnO @ 50 ppm and PSB seed treatment. However, lower yield and yield attributes were recorded in control treatment.
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    ThesisItemOpen Access
    Green Manuring Practices and Nitrogen Levels on Growth and Yield of Maize
    (University of Agricultural Science, Dharwad, 2016-08) Muttanna; H.B. Babalad
    A field experiment was conducted to study the “Green manuring practices and nitrogen levels on growth and yield of maize’’ at Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, Karnataka on medium black soil under rainfed condition during kharif 2015-16. The experiment was laidout using simple RBD with thirteen treatment combinations replicated thrice. The treatments consisted ofsunnhemp and cowpea brown manuring with 100 %, 75 % and 50 % RDN and sunnhemp and cowpea green manuring with 100 %, 75 % and 50 % RDN.Sunnhemp recorded significantly higher phytomass (9.03 t ha-1) and biomass (1.30 t ha-1). Significantly highergrain weight per cob (128.4 and 126.5 g cob-1), grain number per cob (562.4 and 557.4), grain yield (5,758 and 5,624 kg ha-1) and stover yield (8.78 and 8.71 t ha-1)recorded with maize + sunnhemp (1:2) green manuring with 100 % and 75% RDN, respectively with intercultivation to partially mix green manure into soil as compared to RDF and were on par with each other. Dehydrogenase activity (5.94mg TPF/g of soil /day), N uptake (176.22 kg ha-1) and available nitrogen in soil (267.68 kg ha-1) recorded higher with maize + sunnhemp (1:2) green manuring with 100 % RDN with intercultivation to partially mix green manure into soil.Phosphatase activity (41.67 mg of PNP/g of soil/h)washigher with maize + cowpea (1:2) green manuring with 75 % RDN with intercultivation to partially mix green manure into soil.Brown manuring treatments recorded lower weed density as compared to RDFwhich recorded higher weed density (19 m-2) at 40 DAS. The economic analysis revealed that, significantly higher gross returns ( 85,883 ha-1) and net returns ( 49,763 ha-1) recordedwithmaize + sunnhemp (1:2) green manuring with 100% RDN with intercultivation to partially mix green manure into soil.
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    ThesisItemOpen Access
    Response of Mustard Genotypes to Graded Levels of Potassium and Sulphur
    (University of Agricultural Science, Dharwad, 2016-08) Chanakavate, Smita; Chandranath, H.T.
    A field experiment was conducted to study the effect of potassium (K) and sulphur (S) levels on mustard genotypes during rabi 2015-16 at Main Agricultural Research Station, Dharwad. The experiment was laid out in Split plot design involving two genotypes (NRCHB 101 and Local variety) as main plot and nine fertilizer levels as sub plot (0:0 kg K:S ha-1, 0:15 kg K:S ha-1, 0:30 kg K:S ha-1, 20:0 kg K:S ha-1, 20:15 kg K:S ha-1, 20:30 kg K:S ha-1, 40:0 kg K:S ha-1, 40:15 kg K:S ha-1, 40:30 kg K:S ha-1) with three replications. The mustard genotype NRCHB 101 recorded numerically higher seed yield (1,454 kg ha-1) and straw yield (4,559 kg ha-1) as compared to the local genotype (1,395 kg ha-1 and 4,393 kg ha-1 respectively). NRCHB 101 recorded higher growth and yield parameters viz., number of primary branches per plant (6.14), number of siliqua per plant (184.58), seed weight per plant (11.82 g) and thousand seed weight (4.51 g). Combined application of potassium and sulphur (40:30 kg K:S ha-1) recorded significantly higher seed yield (1,647 kg ha-1), stalk yield (4,797 kg ha-1) and oil content (36.32 %) compared to control (1,220 kg ha-1, 4,132 kg ha-1 and 34.24 % respectively) and similar trend was followed for growth and yield parameters. Available potassium and sulphur in soil after harvest was higher with 40:15 kg K:S ha-1 and 40:30 kg K:S ha-1 respectively. Higher net return (` 54,785 ha-1) and B:C (3.13) was recorded with combined application of 40:15 kg K:S ha-1. The genotype NRCHB 101 performed well with the application of 40:30 kg K:S ha-1 which recorded higher yield (1,670 kg ha-1).
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    ThesisItemOpen Access
    Soil and Foliar Application of Boron on Growth and Yield of Sesame (Sesamum indicum L.)
    (University of Agricultural Science, Dharwad, 2016-07) Akshatha, S.; Rajkumara, S.
    A field experiment was conducted during the kharif season of 2015at UAS, Dharwad to study the effect of soil and foliar application of boron on growth and yield of sesame. The experiment was laid out in FRBD with six treatments. Soil application of borax (1, 2 and 3 kg/ha) along with and without FYM enrichment and foliar application of 0 and 0.2 % solubor spray at flowering stage was compared with control. Significantly higher seed yield of 956 kg/ha was obtained with application of RDF (FYM @ 5 t ha-1 + 50: 25: 25 kg ha-1 N: P2O5: K2O) + 3 kg/ha borax soil application. Enriching the FYM with 2 kg or 3 kg /ha of borax (832 and 936 kg/ha respectively) was better in comparison to 1 kg borax (722 kg/ha). Solubor foliar spray of 0.2 per cent recorded the higher seed yield (917 kg/ha) compared to no foliar spray (824 kg/ha). Seed yield per plant, length of capsule, number of capsules per plant and stalk yield followed the same trend with soil and foliar application of boron. Higher oil content was found with the application of RDF +FYM enriched with 1 kg borax/ha (52.18 %). Foliar spray of solubor at flowering stage did not influence the oil content of sesame but higher oil content was with the spray (51.54 %). Interaction was significant for oil content. Higher oil content of 53.55 % in RDF + 2 kg borax/ ha without solubor spray. Higher net returns was found with the application RDF + 1 kg borax soil application along with 0.2 % solubor foliar spray (` 41,108/ha) with a benefit cost ratio of 3.03. Application of RDF alone resulted in lower net returns (` 25,410/ha) and B:C ratio of 2.51.
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    ThesisItemOpen Access
    Bio-Efficacy of Early Post Emergent Herbicides and their Tank Mixtures on Weed Contol in Maize (Zea mays L.)
    (University of Agricultural Science, Dharwad, 2016-07) Varshitha, V.; Ramesh Babu
    A field experiment to study the bio-efficacy of early post emergent herbicides and their tank mixtures on weed control in maize was conducted on black soil at Main Agricultural Research Station, UAS, Dharwad during kharif, 2015. The experiment consisted of 12 treatments laid out in randomized complete block design. The treatments consisted of atrazine, 2,4-D, tembotrione, topramezone and their tank mixtures applied at 16 DAS as early post-emergent herbicides, they were compared with recommended weed management practice (atrazine 1.25 kg ha-1 (PRE) + 1HW + 1IC), weed free and weedy check. The results indicated that among the tank mixtures, significantly lower weed density (7.67 0.5 m-2), weed dry weight (4.89 g 0.5 m-2), weed index (7.07 %), NPK uptake by weeds (2.0, 0.36, 1.08 kg ha-1,respectively) and higher weed control index (70.28 %) was observed with application of topramezone + 2,4-D next to recommended weed management practice. The next best treatment was tembotrione + 2,4-D. All the herbicide mixtures resulted in effective and broad spectrum weed control compared to sole application of herbicides. Higher dehydrogenase activity (8.70 μg TPFg-1 soilday-1) was observed in topramezone + 2,4-D. Growth and yield parameters of maize viz., taller plants (188.90 cm) with higher leaf area (78.74 dm-2), chlorophyll content (48.89), total dry matter production (250.34 g plant-1), hundred grain weight (29.20 g), grain weight per plant (119.49 g), grain yield (5,582 kg ha-1), stover yield (7.32 t ha-1) was recorded in topramezone + 2,4-D next to recommended weed management practice. Gross returns (` 83,730 ha-1), net returns (` 53,769 ha-1) and B:C ratio (2.79) were also significantly higher with topramezone + 2,4-D. However, weedy check was inferior to all other treatments
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    ThesisItemOpen Access
    Response of bt cotton (gossypium hirsutum l.) to Surface and Subsurface Drip Irrigation with Different Etc Levels
    (University of Agricultural Science, Dharwad, 2016-07) Roopashree, M.; Rajkumara, S.
    A field experiment was conducted to study the response of Bt cotton to surface and subsurface drip irrigation with different ETc levels under vertisols at the Irrigation Water Management Research Centre, Belvatagi during kharif 2015-16. The irrigation methods were surface drip and subsurface drip irrigation and the ETc levels were 1.0, 0.8 and 0.6 along with control (surface irrigation @ 0.6 IW/CPE ratio) comprising six treatment combinations, replicated four times in split plot design. Subsurface drip irrigation gave numerically higher seed cotton yield (3,109 kg ha-1) which was 13 per cent higher than surface drip irrigation (2,748 kg ha-1). Among ETc levels, irrigation scheduled at 1.0 ETc recorded numerically higher seed cotton yield (2,996 kg ha-1). Subsurface drip irrigation with 1.0 ETc recorded significantly higher seed cotton yield (3,471 kg ha-1) over other treatment combinations and was on par with surface drip irrigation with 0.6 ETc (3,072 kg ha-1). These yield advantages are due to better growth, yield attributes and moisture content available during crop growth period. Surface irrigation with 0.6 IW/CPE ratio recorded significantly higher seed cotton yield (3,206 kg ha-1) over surface drip irrigation with 1.0 (2,521 kg ha-1) and 0.8 ETc (2,681 kg ha-1) and was on par with all other treatments. Similarly significant differences in growth parameters such as leaf area, leaf area index and total dry matter production were also noticed in the same set of treatment. Significantly higher soil moisture content was recorded in subsurface drip irrigation with 1.0 ETc during all growth stages. Surface drip irrigation with 0.6 ETc recorded significantly higher water use efficiency (7.06 kg ha-1 mm) over all other treatment combinations. Irrigation scheduled at 1.0 ETc along with subsurface drip irrigation recorded higher higher gross return (` 1,56,195/ha), net return (` 1,09,538 /ha) and B:C ratio (3.34)
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    ThesisItemOpen Access
    Agronomic Biofortification of Zinc and Iron Nutrition in Wheat
    (University of Agricultural Science, Dharwad, 2016-07) Pallavi, V.; Sudha, T.
    A field experiment was conducted to study the “Agronomic biofortification of zinc and iron nutrition in wheat” during rabi 2015-16, MARS, Dharwad (Karnataka). The experiment was laid out in Randomized Complete Block Design having fifteen treatments with three replications. Treatment combinations included soil and foliar application of zinc and iron each @ 20 kg ha-1 and @ 0.5 per cent, respectively at two stages viz., heading and milky stages along with RDF. Soil and foliar application of zinc @ 20 kg ha-1 and @ 0.5 per cent, respectively at heading and milky stages of the crop recorded significantly higher growth parameters viz., plant height, number of tillers per meter row length, leaf area, LAI and dry matter production compared to control. Further, it recorded higher grain yield (38.01 q ha-1), biomass yield (100.66 q ha-1), yield attributing characters viz., number of productive tillers m-2 (273.33), weight of grain per ear head (1.47 g), 1000 grain weight (43.99 g), ear head length (6.79 cm), number of filled grains (281), spikelet fertility (86.06 %), protein content (14.20 %) and sedimentation value (37.67 ml) over control. However, it is on par with soil and foliar application of iron at heading and milky stages. Significantly higher seed germination (95.70 %), shoot length (10.43 cm), root length (17.70 cm) and seedling vigour index (2,697) recorded with soil and foliar application of zinc @ 20 kg ha-1 and @ 0.5 per cent, respectively at heading and milky stages. Significantly higher uptake of nitrogen (124.61 kg ha-1), phosphorus (65.17 kg ha-1), potassium (149.89 kg ha-1) and zinc (165.29 g ha-1) and gross returns (` 60,752), net returns (` 33,074) and B:C ratio (2.19) was recorded with soil and foliar application of zinc @ 20 kg ha-1 and @ 0.5 per cent, respectively at heading and milky stages.
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    ThesisItemOpen Access
    Agronomic Biofortification of Zinc and Iron Micronutrients in Maize
    (University of Agricultural Science, Dharwad, 2016-07) Kustigar, Nikhilkumar; Salakinkop, S.R.
    A field experiment on agronomic biofortification of zinc and iron micronutrients in maize was carried out during kharif season of 2015 at Agricultural Research Station, Bailhongal. The experiment was laid out in randomized block design (factorial concept) with three replications. It consisted of 16 treatment combinations involving seed treatment, soil application and foliar spray of Zn and Fe. Soil application of FYM enriched with ZnSO4 and FeSO4 each @ 25 kg ha-1 recorded higher grain yield (76.2 q ha-1), stover yield (106.0 q ha-1), cob length (19.8 cm), cob weight (271.4 g), grain weight per cob (189.3 g), number of grains per cob (673.5), test weight (31.6 g), leaf area (73.4 dm2 plant-1), dry matter production (253.8 g plant-1), higher Zn (47.0 mg kg-1) and Fe (75.2 mg kg-1) density in maize grain. It also recorded higher gross return (` 1,05,446 ha-1 ), net returns (` 70,367 ha-1) and B-C ratio (3.01). However, it was on par with the soil application of FYM enriched with ZnSO4 and FeSO4 each @ 15 kg ha-1 with respect maize growth, yield and economics. Similarly, foliar spray of Zn and Fe each @ 0.5 per cent at 45 DAS recorded higher grain yield (72.8 q ha-1), stover yield (102.9 q ha-1), Zn and Fe content in maize grain (44.8 and 70.9 mg kg-1 respectively), net returns (` 66,102 ha-1) and B-C ratio (2.9) compared to control. Among the different treatment combinations, treatment involving seed treatment, soil application of FYM enriched ZnSO4 and FeSO4 each @ either 25 or 15 kg ha-1 and foliar spray recorded higher grain yield (T2S3F2:78.5 q ha-1 and T2S4F2:79.0 q ha-1), stover yield (T2S3F2:106.9 q ha-1 and T2S4F2 106.6 q ha-1), Zn and Fe content in grain (48.5, 48.4 and 75.8, 75.7 mg kg-1 in T2S3F2 and T2S4F2 respectively) and their uptake. Further, they recorded significantly higher gross returns, net returns and B-C ratio.
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    ThesisItemOpen Access
    Nutrient Management Practices for Enhancing the Productivity of Aerobic Rice During Summer in Hill Zone of Karnataka
    (University of Agricultural Science, Dharwad, 2016-07) Naganagouda, S.C.; Manjappa, K.
    A field experiment was conducted to study the nutrient management practices for enhancing the productivity of aerobic rice in hill zone of Karnataka during summer 2014-15 at Agricultural Research Station (Paddy), Sirsi, University of Agricultural Sciences, Dharwad. There were 11 treatment combinations having spray of two different water soluble fertilizers viz., 19:19:19 and 13:0:45 (0.5 %) ; soil application of micronutrients viz., zinc as zinc sulphate (25 kg ha-1) and boron as borax (2 kg ha-1) along with recommended dose of fertilizer (RDF) (75:75:87.5 kg N, P2O5 and K2O ha-1) and RDF + farm yard manure (FYM) (10 t ha-1). The experiment was laid out in randomized complete block design with three replications. Foliar application of 19:19:19 along with RDF + FYM + ZnSO4 + borax has recorded significantly higher grain and straw yield (3,765 and 4,420 kg ha 1, respectively) and yield parameters like productive tillers (143.7), filled grains per panicle (69.3) and grain weight per panicle (2.56 g). Whereas, significantly lower grain (2,753 kg ha-1) and straw (3,346 kg ha-1) yield was recorded in RDF alone treatment. Total uptake of nitrogen (96 kg ha-1), phosphorus (19 kg ha-1), potassium (101.4 kg ha-1), zinc (971.9 g ha-1) and boron (176.4 g ha-1) was also significantly higher in treatment having foliar application of 19:19:19 along with RDF + FYM + ZnSO4 + borax and was found on par with all other treatments receiving foliar spray of either 19:19:19 or 13:0:45. Similarly, higher net returns (Rs. 33,436 ha-1) was recorded in foliar application of 19:19:19 along with RDF + FYM + ZnSO4 + borax and was found significantly superior over all other treatments except the treatments with foliar application of either 19:19:19 or 13:0:45