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Bihar Agricultural University, Sabour

Bihar Agricultural University, Sabour established on 5th August, 2010 is a basic and strategic institution supporting more than 500 researchers and educationist towards imparting education at graduate and post graduate level, conducting basic, strategic, applied and adaptive research activities, ensuring effective transfer of technologies and capacity building of farmers and extension personnel. The university has 6 colleges (5 Agriculture and 1 Horticulture) and 12 research stations spread in 3 agro-ecological zones of Bihar. The University also has 21 KVKS established in 20 of the 25 districts falling under the jurisdiction of the University. The degree programmes of the university and its colleges have been accredited by ICAR in 2015-16. The university is also an ISO 9000:2008 certified organisation with International standard operating protocols for maintaining highest standards in teaching, research, extension and training.VisionThe Bihar Agricultural University was established with the objective of improving quality of life of people of state especially famers constituting more than two third of the population. Having set ultimate goal of benefitting society at large, the university intends to achieve it by imparting word-class need based agricultural education, research, extension and public service.

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2016 - 20172
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Author: Kumar, Chandan × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Nitrogen and weed management in direct-seeded rice (Oryza sativa L.)
    (Department of Agronomy, BAU, Sabour, 2017-09) Kumar, Chandan; Tyagi, Shashank
    A field experiment entitled “Nitrogen and weed management in direct-seeded rice (Oryza sativa L.)’’ was conducted during kharif 2015 at Research Farm, Department of Agronomy, Bihar Agricultural University, Sabour, Bhagalpur, Bihar. Treatments were laid out in split plot design replicated thrice. Three nitrogen splitting, 1/3 at sowing + 1/3 at tillering + 1/3 at panicle initiation (N1), 1/4 at 20 days after sowing + 1/2 at tillering + 1/4 at panicle initiation (N2), 1/3 at 20 days after sowing + 1/3 at tillering + 1/3 at panicle initiation (N3) were kept in main plot and each main plot is sub-divided in five sub-plots having five weed management treatments,viz., weedy (W1), weed free (Three hand weeding at 15, 30 and 45 DAS ) (W2), pendimethalin 1.0 kg a.i. ha-1 PE fb one hand weeding at 30 DAS (W3), pendimethalin 1.0 kg a.i. ha-1 PE fb bispyribac sodium @ 25 g a.i. ha-1 POE (W4), pendimethalin 1.0 kg a.i. ha-1 PE fb ethoxysulfuron @ 18.5 g a.i. ha-1 POE (W5). Among different nitrogen splitting methods 1/3 at 20 days after sowing + 1/3 at tillering + 1/3 at panicle initiation (N3) resulted the best expression of growth characters and yield attributes at harvest, which was ultimately reflected highest grain yield (36.6 q ha-1), which exhibited statistical parity with N2 treatment and was found significantly superior over N1 treatment which recorded lowest grain yield (35.3 q ha-1). Lowest weed dry weight, highest weed-control efficiency, minimum N uptake by weeds and maximum net returns were recorded with the splits involving 1/3 at 20 days after sowing + 1/3 at tillering + 1/3 at panicle initiation (N3). Among weed management practices, weed free (Three hand weeding at 15, 30 and 45 DAS) (W2) and pendimethalin 1.0 kg a.i.ha-1 PE fb hand weeding at 30 DAS (W3) were found to be superior in respect of growth characters and yield contributing attributes and final grain yield of rice. The highest N uptake by rice, higher recovery of applied nitrogen, minimum dry weight of weeds, highest weed-control efficiency and minimum depletion of nitrogen by weeds and maximum net returns were recorded with weed free (Three hand weeding at 15, 30 and 45 DAS) (W2) which was at par with pendimethalin 1.0 kg a.i. ha-1 PE fb one hand weeding at 30 DAS (W3). From the results of the present study, it may be concluded that among nitrogen splitting, application of 1/3 N at 20 days after sowing + 1/3 N at tillering + 1/3 N at panicle initiation in direct seeded rice produced higher growth, yield attributes and net return and among weed management practices, weed free (Three hand weeding at 15, 30 and 45 DAS) and pendimethalin @ 1.0 kg a.i. ha-1 PE fb one hand weeding at 30 DAS were found the best & reflecting higher yield of rice and reduced weed density leads to more weed control efficiency and less weed index, however, pendimethalin @ 1.0 kg a.i. ha-1 PE fb ethoxysulfuron @ 18.5 g a.i. ha-1 POE exhibited maximum B:C ratio. However, the results are of one season. Further experimentation is needed to have the right recommendation of time of nitrogen application and weed management practices for direct seeded rice for a particular agro-climatic situation.
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    ThesisItemOpen Access
    Studies on seasonal incidence of insect-pests and pollinators in guava and eco-friendly management of fruit fly
    (Department of Entomology, BAU, Sabour, 2016-09) Kumar, Chandan; Ray, S. N.
    The Guava (Psidium guajava) belongs to the family of Myrtaceae. It is a very rich source of vitamin C (Mahmood, 1994). Guava, the “poor man’s fruit” or “apple of the tropics” was a popular tree fruit of the tropical and subtropical climates. About 80 species of insects have been recorded on guava trees, affecting yield and quality of fruits. Fruit flies, castor capsule borer, mealy bug, whiteflies and coccids (scale insects and mealy bugs) are considered as major pest of guava, while aphids, thrips, cockchafers, stem borers and fruit borers, etc., are the minor pests (NHM, 2012). The infestation of fruit fly is a major limiting factor in production of guava. Apart from these pollinators are also playing an important role in the production of guava. Considering the above background information in view, the present experiment was undertaken on “Studies on seasonal incidence of insect-pest and pollinators in guava and eco-friendly management of fruit fly” with the objectives i. To study the seasonal infestation of insect-pests of guava, ii. To record the diversity and activity of pollinators in guava and iii. To evaluate different traps for fruit fly management. The incidence of fruit flies was recorded as high as from second week of June to August and the peak population was recorded at 32nd standard week (August). Among different species of Bactrocera, the highest population was recorded with B. dorsalis followed by B. zonata and B. correcta. The incidence of mealy bug was observed as high as from second fortnight of January to second fortnight of February, while castor capsule borer peak incidence was recorded at 49th standard week (December). Regarding diversity of pollinators are concerned, a total of four species of Apis were observed in the field pollinating the guava flower namely Little bee, Apis florea; Rock bee, A. dorsata, Italian bee, A. mellifera, Indian bee, A. cerena indica. In addition to, coccinellid and hover fly were also observed in the flowers of guava. A. mellifera was recorded as the most abundant pollinator of guava flowers based on the number of visit observed. The maximum pollinators were visited the guava flowers during 0700 hr followed by 1000 hr. Three traps viz: Sabour trap, Water trap and Nomate trap along with untreated control were taken for the management of fruit flies. Among the traps, Sabour trap performed well as compared to other traps based reduction of fruit damage both wt. and no. basis and simultaneously obtained highest yield as compared to others. The highest cost-benefit ratio was obtained with Sabour trap (1:18.71) followed by water trap (1:8.97).