Browsing by Author "Mishra, Amit Kumar"
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ThesisItem Open Access Delineation of Suitable Groundwater Recharge Zones from Earth’s Thermal Profiles in Ahar River Basin, Udaipur(MPUAT, Udaipur, 2010) Mishra, Amit Kumar; Sharma, ArunGroundwater is a precious resource of limited extent. A systematic planning of groundwater exploitation using modern techniques is essential for the proper utilization and management of this precious but shrinking natural resource. In the present study, Geographical Information System (GIS) is used to integrate multiparametric data to generate several thematic maps, delineate groundwater potential zones and identify sites of artificial recharge in the Ahar River Basin, Udaipur, Rajasthan (India). The “Thematic Layers” considered to delineate groundwater potential zones are geomorphology, recharge, depth to groundwater level, groundwater temperature, topographic elevation and discharge, which were prepared using conventional maps and data. All these themes and their individual features were then assigned weights according to their relative importance in groundwater occurrence and the corresponding normalized weights were obtained based on the Principal Eigen vector Analysis process. The “Thematic Layers” were finally added using ILWIS software to yield groundwater potential zone map of the study area. Thus, three different groundwater potential zones were identified viz., ‘good’, ‘moderate’ and ‘poor’. The area having ‘good’ groundwater potential is about 152.6 km2 which is about 44% of the total study area. Such region is in the north, north-east and north-west part of the Ahar river basin. The “Thematic Layers” used in this study to determine artificial recharge zones are groundwater temperature, recharge, groundwater level (pre and post-monsoon), topographic elevation. These layers were combined using isothermal and isobath maps of eleven months which are from august 2008 to June 2009 to delineate zones of suitability for artificial recharge structures. The area suitable for artificial recharge is 44.6 km2 which is 12.7% of the total study area.ThesisItem Open Access Production and reproduction performances of CSML X Hansli crossbred chicken under intensive system of management(Post Graduate Department of Poultry Science, OUAT, Bhubaneswar, 2020) Mishra, Amit Kumar; Behura, N.C.; Panigrahi, B.; Samal, L.; Bagh, JessyA cross breed chicken is a breed of higher productivity as well higher adaptability to native environment. They can serve us highly proteinaceous foodstuff. Two hundred forty day old CSML X Hansli cross bred chicks were randomly distributed in 3 replicate groups to have 80 chicks per replicate group. They were given feed and water on ad-libitum basis. Then during the grower stage (8th -20th week), sex separated feeding was practiced. Male and female chicken were housed separately. Restricted feeding was practiced throughout the period. After completion of grower stage, around 80 female layers were taken and randomly distributed into 8 replicas. Feed was allotted to layers @ 110 g/ day/bird and the feeding continued from 21st to 52nd week. Proper vaccination schedule and medication were followed. Birds were reared up to 52 weeks of age. The following parameters such as Growth performance, Feed conversion efficiency, Mortality at different ages, Linear body measurement, Egg Production %, egg production performances, Age at sexual maturity in females, External egg quality parameters, Internal egg quality parameters were studied at different ages. The body weight of male and female of experimental cross at 8th week of age was 755.33±4.95g and 679.44±6.49g respectively. The body weight of male and female of the above cross at 20th week of age was 2403.94±61.72g and 1900.95±27.29g respectively. The FCR gradually increased from 1.72±0.01 at 1st week of age to 2.96±0.02 at 8th week of age. The FCR was significantly higher (p≤ 0.01) in male as compared to female at grower phase. The linear body measurements of male birds were significantly higher (p≤ 0.01) than that of female birds at all ages except shank width. The age at first lay of these birds was 170.00±0.27 days. The peak egg production 70.75±1.12 was obtained at 308.25±0.16 days. The egg weight increased significantly (p≤ 0.05) from 25th week of age (43.29±1.23) to 52nd week of age (53.00±1.73). The albumen index was 0.0957±0.007 at 30th week of age and 0.1026±0.003 at 52nd week of age. The above measured characters were compared with different crossbreeds and some native breeds which indicates dual purpose persona of these birds.ThesisItem Open Access Stability analysis for grain yield and quality traits in indica rice (Oryza sativa L.) lines(Department of Plant Breeding and Genetics, BAU, Sabour, 2018-08-29) Mishra, Amit Kumar; Singh, P. K.The present study was undertaken with the objective to determine the nature and magnitude of genetic variability, heritability and genetic advance, degree of association among yield and quality traits, direct and indirect effects, genetic diversity on the basis of morphological and molecular level, phenotypic stability among 36 advance indica rice lines including 3 checks for 21 yield and quality attributes. The trials were conducted in randomized complete block design (RCBD) with 3 replications and 4 environments (including control and reproductive stage drought stress conditions) during kharif 2014 and kharif 2015. The analysis of variance indicated highly significant differences for the majority of traits studied except few quality traits which indicated the significant differences among these rice lines. In congruence with the previous reports, phenotypic variance (VP) and phenotypic coefficient of variance (PCV) were higher than the genotypic variance (VG) and genotypic coefficient of variance (GCV) subsequently which indicated the influence of environment on the development of the characters. Moderate values (10-20) of GCV and PCV was observed for some traits hence; selection for these traits may be ambiguous if we adopted for its improvement. The higher magnitude of GCV was observed for number of spikelets per panicle, kernel elongation ratio and head rice recovery while maximum PCV was observed for number of spikelets per panicle, harvest index and number of tillers per plant. High heritability along with higher magnitude of genetic advance as percent of mean was observed for the traits namely; number of spikelets per panicle, head rice recovery and kernel elongation ratio which revealed the preponderance of additive gene action in the inheritance and these traits could be improved through direct selection as GCV is also comparatively high for such traits. Positive or negative significant association with higher positive or negative direct effect were observed for the traits viz; plant height, biological yield per plant and harvest index which indicated the effectiveness of these traits for utilization in future rice breeding programmes. Genetic divergence among rice lines showed sufficient amount of genetic diversity hence, crossing among the divergent lines grouped in different clusters would produce superior hybrids and valuable transgressive segregants with higher genetic advance. The molecular diversity also validated the morphological differences among these rice lines and higher PIC values of the markers indicated their utility in explaining the genetic diversity. In case of phenotypic stability on the basis of stability parameters for grain yield per plant, IR 92521-24-5-1-3 was found stable line across all the environments and had maximum grain yield per plant, earliest in days to 50% flowering, better maturity duration, maximum number of spikelets per panicle, good head rice recovery, moderate L/B ratio and it also performed better than all three checks therefore, such line can be recommend to farmers or variety release proposal. Rice line IR 92545-53-4-1-3 was identified for unfavourable or poor environment while IR 92546-17-6-4-3 and IR 92546-17-6-4-4 lines was identified for rich or favourable environment.