Loading...
University of Agricultural Sciences, Bengaluru
University of Agricultural Sciences Bangalore, a premier institution of agricultural education and research in the country, began as a small agricultural research farm in 1899 on 30 acres of land donated by Her Excellency Maharani Kempa Nanjammanni Vani Vilasa Sannidhiyavaru, the Regent of Mysore and appointed Dr. Lehmann, German Scientist to initiate research on soil crop response with a Laboratory in the Directorate of Agriculture. Later under the initiative of the Dewan of Mysore Sir M. Vishweshwaraiah, the Mysore Agriculture Residential School was established in 1913 at Hebbal which offered Licentiate in Agriculture and later offered a diploma programme in agriculture during 1920. The School was upgraded to Agriculture Collegein 1946 which offered four year degree programs in Agriculture. The Government of Mysore headed by Sri. S. Nijalingappa, the then Chief Minister, established the University of Agricultural Sciences on the pattern of Land Grant College system of USA and the University of Agricultural Sciences Act No. 22 was passed in Legislative Assembly in 1963. Dr. Zakir Hussain, the Vice President of India inaugurated the University on 21st August 1964.
Browse
12 results
Search Results
ThesisItem Open Access EFFECT OF URBANIZATION ON INSECT FAUNA: DIVERSITY OF POLLINATORS ACROSS A RURAL-URBAN GRADIENT(University of Agricultural Sciences, Bengaluru, 2018-08-20) PRASHANT, HULAMANI; BELAVADI, V. V.Massive and ever increasing rate of urbanization known to alter the natural landscape in a more dramatic and persistent fashion than any other anthropogenic landuse. However, the potential effects of urbanization on wildlife remain a poorly understood, especially in developing countries. In this context, the present study was conducted to investigate the diversity of pollinators along a gradient of increasing urbanization in Bangalore, which has experienced rapid and uncontrolled growth in the last decades. Pollinators are important component of biodiversity since they provide pollination services for agriculture and are thus indispensable in food production. To census them, yellow pan traps were employed at 180 farm sites at 3 urbanization stages (urban, peri-urban, rural) in two transects north and south of the city. The lowest richness and abundance of pollinators was recorded in the peri-urban areas, while the highest pollinator diversity was found in the rural areas, followed by the urban areas. These results not only indicated a negative effect of urbanization on pollinator diversity but also show that it is possible to maintain relatively high numbers of pollinators within the city. Pollinator abundance as well as richness positive correlated with the availability of floral resources at the landscape scale. Furthermore, analyses also indicated pollinator community composition, as well as influence of urbanization on ecological traits. Thus, the present study highlighted the need for more research on the effects of urbanization on ecology in developing countries, as the vast majority of future urban expansion will take place in developing regions.ThesisItem Open Access POPULATION DYNAMICS AND MANAGEMENT OF POD BORER COMPLEX ON PIGEONPEA [Cajanus cajan (L.) Millsp.](UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2018-06-28) ARUNKUMAR, AKKANNA; manja, NaikThe pigeonpea [Cajanus cajan (L) Millsp.] commonly known as redgram, tur and arhar is an erect and short lived perennial leguminous shrub. It belongs to the genus Cajanus of the sub-tribe cajaninae, tribe phaseolae of the sub-family papilionoidae under the family leguminosae. It is evolved in South Asia and appeared about 2000 BC in West Africa, which is considered as a second major centre of origin. Pigeonpea constitutes an important ingredient of predominantly Indian vegetarian food. Pigeonpea has 20 to 25 per cent of protein on dry seed basis, which is almost 2.50 to 3.0 times of the value normally found in the cereals (Tamboli and Lolage, 2008). It is often consumed as a vegetable in central India and in contrast in North India, it is eaten as dal. The pod husk and leaves are used as cattle feed and dried stalks as fuel in rural areas. It has ability to resist drought and to add large quantities of biomass to the soil in addition to biological nitrogen fixation.ThesisItem Open Access EFFECT OF DIFFERENT SOURCES OF SOIL NUTRIENT APPLICATIONS ON SOIL FAUNA IN SUNFLOWER ECOSYSTEM(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-11-02) SHIVAPPA, AGADI; Kumar, N. G.The investigation on the effect of different sources of soil nutrient applications on soil fauna in sunflower ecosystem was carried out at the ZARS, University of Agricultural Sciences, GKVK, Bangalore, during 2016-17. Soil application of 15 t of FYM/ha + introduced consortia of soil fauna treatment documented significantly higher abundance of total mesofauna (15.08), Collembola (2.45),cryptostigmatids (3.12),other Acari (7.25) and total Acari (10.54) compared to rest of treatments during cropping season. The highest population of total soil mesofauna was noticed 90 (16.50) days after sowing. The same treatment recorded significantly higher available nitrogen (311 kg/ ha), available phosphorus (122 kg/ha), available potassium (235 kg/ha), exchangeable calcium (6.83 meq/100 g) and soil microbial biomass C (3852.05 μg/g soil) at 45 days after sowing. STCR integrated practices with introduced consortia of soil fauna treatment recorded higher grain yield (28.55 q/ha) compared to recommended package of practices alone (17.81 q/ha). Soil mesofauna was positively related with all chemical and microbial parameters. These showed 31.8 % of impact on the soil mesofaunal activity. Soil moisture and atmospheric maximum temperature showed significantly positive and negative relationship with the abundance of soil mesofauna respectively. These factors together with rainfall exhibited significant influence on the abundance of mesofauna (89.2%).ThesisItem Open Access STUDIES ON INSECT PESTS OF GRAIN AMARANTH (Amaranthus sp.) AND THEIR MANAGEMENT(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-09-26) ANIL; Srinivas Reddy, K. M.The present investigation revealed nineteen insect pests on grain amaranth, namely leaf webber (Hymenia recurvalis Fab.), stem weevil (Hypolixus truncatulus Fab.), ear head caterpillar (Helicoverpa armigera Hubn.), leaf beetle (Gametis versicolor Fab.), Yellow winged grasshopper (Gastrimargus species Fab.), Brown stripped beetle (Clinteria kluge Hope.), amaranth bug (Cletus species Fab.), horned coreid bug (Cletomorpha sp Fab.), wingless grasshopper (Neorthacris acuticeps Bol.), ash weevil (Myllocerus discolor Boh.), (Myllocerus dorsatus Fab.), white spotted flea beetle (Monolepta signata Oliv.), seed bug (Spilostetchus hospes Fab.), (Graptostetchus servus Fab.), (Nysius species Dall.), mirid bug (Eurystylus sp. Stal.), Stink bug (Hyalomorpha picus Fab.) and other insect pests. The major natural enemies recorded were coccinellids, black bug, assassin bug and braconid wasp. Thirty two grain amaranth genotypes were screened for leaf webber, of which KBGA-5, RHGA-13-1, RHGA-13-2, RMA-7, MGA- 15, KBGA-4, BGA-38, BGA-43, SKGPA-75, RJAS-08-17, MGA-12, KBGA-7, IC- 032193 and IC-035713 were found tolerant. KBGA-9, BGA-7-1, BGA-29, SKKGPA-86, RHGA-11, BGA-2 and SKGPA-74 were moderately tolerant to leaf webber. Among the insecticides evaluated, emamectin benzoate 5% SG @ 0.25 g/l and indoxacarb 15.8% EC @ 0.5 ml/l were found to be more superior against leaf webber and acephate 75 SP @ 1.5 g/l and imidacloprid 17.8 SL @ 0.3 ml/l superior against coreid bug over other treatment respectively. The maximum grain yield (13.98 q/ha) with IBCR (Incremental Benefit Cost Ratio) of 26.00 was evident from the plots treated with imidacloprid 17.8 SL, followed by profenophos 50 EC with seed yield of 13.59 q/ha with IBCR Rs. 29.40.ThesisItem Open Access STUDIES ON FLOWER VISITORS AND THEIR FORAGING ACTIVITY ON SUNFLOWER (Helianthus annuus L.) AND NIGER (Guizotia abyssinica Cass.)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-08-11) MANISHA; KHADER KHAN, H.Abundance and diversity of pollinators was recorded in sunflower – niger cropping systems. Eleven and thirteen species of pollinators were observed in sunflower and niger respectively. The diversity of pollinators was similar both in sunflower and niger (0.22 each). In intercropping system at different ratio of sunflower and niger, diversity was maximum in 8:4 ( 0.22 ) and 5:5 (0.22). In sunflower the major pollinators were Apis dorsata (38.09%) followed by A.cerana (29.52%) and A.florea (21.58% ). In niger A.dorsata, A.cerana and A.florea constituted about 27.23%, 22.15% and 41.46% respectively. In intercropping system A. dorsata (60.72 bees) was more in 5:5 ratio on sunflower and A.florea (58.34 bees) in 6:4 on niger. Maximum activity of A. dorsata (6.63 and 6.67 bees) was observed at 9.00AM; A. cerana (6 and 5.33 bees) at 10.00AM and A. florea (3.00 and 9.33 bees) at 11.00AM in sunflower and niger respectively. Number of marked bees recaptured after releasing were more in niger (4.6 bees) compared to sunflower (3.7 bees). Intercrop movement of bees was more from sunflower to niger (0.5 bees) as compared to movement from niger to sunflower (0.3 bees). The number of filled seeds (1195), total number of seeds (1354), test weight (4.39g), volume weight (59.75g), kernel weight (4.54g), germination percent (100%), oil content (42.11%) was more in 6:4 ratio on sunflower. Number of filled seeds (21.66), total number of seeds (26.20) and volume weight (32.38g) more in 6:4 in niger.ThesisItem Open Access VARIATION IN THE POPULATION AGE STRUCTURE AND ITS INFLUENCE ON THE ADULT ACTIVITY IN Corcyra cephalonica (STAINTON) (LEPIDOPTERA: PYRALIDAE)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-08-08) SOWJANYA, K. C.; Thippaiah, M.During the present investigation, intra-generation accumulation of variation in age-structure and effect of accumulated variation on adult emergence and activity pattern in Corcyra cephalonica was studied. Variation in developmental period at different stages of Corcyra was studied using same day laid eggs. At the egg stage 5 days of variation in developmental period was noticed. Considerable variation (head capsule width) among the individuals was also noticed during the larval stage. Head capsule width was measured at every four days. Accumulated variation in head capsule width increased from 0.0009 during first sampling to 0.029 at last sampling. However, coefficient of variation was almost same throughout the larval period. Moths started emerging on 52nd day of egg inoculation. Male moth emerged first (52nd day) followed by females on 54th day, suggesting occurrence of protandry in C. cephalonica. Moth emergence continued upto 113th day of egg inoculation. In entire population 68.9% females were mated and 31.1% remained unmated. Among the mated females, 76.35 % had mated once, 16.67 % mated twice, 5.18% was mated thrice, 0.45% mated four times and 1.35% mated five times. Males completed their developmental period earlier to females, though number instars remained same among them (7 to 8 instars). Average total developmental period was 45.3 ± 2.5 in males and 48.9 ± 3.3 days in females, suggesting gender associated difference in developmental period.ThesisItem Unknown TEMPORAL DIVERSITY OF PARASITOIDS IN RAGI, PADDY AND SUGARCANE ECOSYSTEMS(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-07-26) ABHISHEK, M. S.; Jayappa, A. H.A study was conducted from March, 2016 to February, 2017 at the College of Agriculture, V. C. Farm, Mandya, Karnataka to determine the parasitoid faunal complex, their abundance and temporal diversity in ragi, paddy and sugarcane ecosystems. Twenty yellow pan traps per crop were laid at fortnightly intervals. Of the 24,586 parasitoid specimens collected from the three agroecosystems, 7725 were from ragi, 8248 were from paddy and 8613 were from sugarcane. Eighteen parasitoid families occurred in ragi and paddy fields while 19 families occurred in the sugarcane field. The parasitoid families collected were Trichogrammatidae, Mymaridae, Encyrtidae, Aphelinidae, Eulophidae, Chalcididae, Eurytomide, Eupelmidae, Torymidae, Ichneumonidae, Braconidae, Scelionidae, Platygastridae, Ceraphronidae, Megaspilidae, Evaniidae, Cynipidae and Diapriidae. All families collected occurred in all three ecosystems with the exception of Perilampidae, which occurred only in the sugarcane ecosystem. Scelionidae was most abundant and richest in genera (33) in all three ecosystems, followed by Encyrtidae (30), Trichogrammatidae (25), Mymaridae (14), Aphelinidae (10) and Platygastridae (8). Of the two-functional groups of parasitoids, viz., egg and other (larval, pupal and adult) parasitoids, the egg parasitoids were more abundant in all the three ecosystems. Parasitoid abundance correlated significantly with rainfall in the paddy ecosystem; no such correlation was found in the other two (ragi and sugarcane) ecosystems. Temperature did not correlate significantly with parasitoid abundance in all three ecosystems. Parasitoid diversity (Shannon-Wiener, Simpson and Margalef’s) was higher in monsoon and winter than in other seasons but it didn’t differ significantly between the three ecossytems.ThesisItem Open Access ROLE OF FLOWER VISITORS IN BITTER GOURD (Momordica charantia L.) POLLINATION AND SEED PRODUCTION(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-10-16) THARINI, K. B.; KHADER KHAN, H.Bitter gourd (Momordica charantia L.) is one of the most popular, annual tropical vegetable crops probably originated in South East Asia. It is widely grown in India, Indonesia, Malaysia, China and tropical Africa. It is a monoecious climbing type herbaceous crop belonging to the family Cucurbitaceae, which consists of 130 genera and 900 species. Depending on the location, it is known by different names- balsam pear, bitter melon, bitter cucumber and African cucumber (Heiser, 1979).ThesisItem Open Access STUDIES ON MASS PRODUCTION AND STORAGE OF ENTOMOPATHOGENIC NEMATODE, Heterorhabditis indica (Poinar et al.)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-03-24) PRADEEP S, SAJJAN; Kumar, A. R.V.An investigation on the effect of different diets on growth and development of greater wax moth (Galleria mellonella) was conducted at Department of Agricultural Entomology, UAS, Bengaluru. Preliminary study with 9 diets along with standard diet revealed that diet 10 (0.44 ± 0.14 g) and 4 (0.43 ± 0.06 gm) showed maximum larval weight, diet 1 (28.33 ± 2.91mm) and 10(28.54 ± 1.87 mm) showed maximum length, diet 2 (2.28 ± 0.22 mm) and 7 (2.32 ± 0.15 mm) showed highest head capsule width. The interrelationships observed on 25thday old larvae showed, length to be strongly correlated with weight and weight varied as a power function with head capsule widths. Diet 10, 7, 4, 1 and 8 were selected for further testing. The diet 1 and 4 showed highest larval weights and length among the diets retested and followed logarithmic functions. The interrelationships showed weights and length of the larvae followed power relations with head capsule width in all the diets. Pupal weight and maximum adult emergence were observed in diet 1 (0.34 ± 0.03 g, 2589.33 ± 150.15 adults), followed by diet 4 (0.33 ± 0.02 g, 1936.00 ± 223.06 adults). Average yields of EPNs showed linear increasing trend with age of the larvae. 20day old larvae yielded 55,725.9 (± 30,331.28) IJs per larva whereas 35day old larvae yielded 1,55,711.2 (± 49,392.60) IJs per larva. Studies on formulation of cadavers of nematode infected larvae resulted in lack of emergence of nematodes in all kinds of formulations tested. However, under laboratory conditions starch – kaolin formulation was acceptable for one week period while the talc formulation was acceptable over a two week period. But unformulated cadavers were found to be best over an extended period of two weeks. Department