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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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20212
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Author: Kumar, Ashutosh × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Effect of microenvironment and nitrogen levels on growth and yield of cabbage (Brassica oleracea var capitata) and its simulation analysis
    (Department of Horticulture (Olericulture), BAU, Sabour, 2021) Kumar, Ashutosh; Verma, R. B.
    The investigation entitled “Effect of microenvironment and nitrogen levels on growth and yield of cabbage (Brassica oleracea var capitata) and its simulation analysis” was initiated at Vegetable section, Research Farm, Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India during 2017-18 to 2018-19. The experiment comprising of three dates of transplanting (D1 = 29 November 2017, D2 = 9 December 2017, D3 =19 December 2017), three nitrogen levels (N1=125 kg/ha, N2= 150 kg/ha), N3= 175 kg/ha) and three varieties (V1= Golden Acre, V2= Disha and V3= NS183) was laid out in Split-Split Plot Design (SPD) replicated three times comprised of twenty-seven treatment combinations. Crop simulation model (DSSAT v4.6) was used to describe yield predictability in a set of environment. For DSSAT v4.6 model requirement, the following data sets were recorded/collected and used: - 1. Long term weather data (on daily basis) collected from meteorological centre, BAU Sabour for the parameters like rainfall, solar radiation, temperature (maximum and minimum temperature), 2. soil profile data (Clay, slit and sand (%), Organic carbon (%), pH, CEC (p+/kg), Total nitrogen (Kg/ha), Bulk density (g cm-3), 3. crop management data (Planting method and plant population and experimental data, Fertilizer-amount and time, Number of Irrigation and Harvesting data). Observations were recorded on leaf area Index, leaf weight (g), stem weight (g), root weight (g), leaf number per stem, specific leaf area (cm2g-1), tops weight (kg/plot), yield (kg/ha). The calibration and validation of the model for cabbage and sensitivity analysis was done to see the impact of temperature change on yield of cabbage. In both the years (pooled data) among various dates of transplanting i.e. D2 (9 December) revealed highest leaf weight (291.05 g) stem weight (21.32 g/plant), root weight (25.08 g/plant), leaf number per stem (12.29), tops weight (35.73 kg/plot), yield (529.10 q/ha) and D3 (19 December) exhibited highest leaf area index (3.18). Among various nitrogen levels, N3 (175 kg N/ha) recorded highest leaf area index (3.11), leaf weight (246.65 g/plant), stem weight (17.08 g/plant), root weight (22.42 g/plant), leaf number per stem (12.70), tops weight (33.41 kg/plot) and yield (494.77 q/ha). Among varieties, V2 (Disha) recorded highest leaf area index (3.22), stem weight (20.96 g/plant), root weight (26.12 g/plant), leaf number per stem (14.24), tops weight (34.40 kg/plot) and yield (509.44 q/ha) whereas V3 (NS 183) exhibited maximum leaf weight (249.14 g/plant). Simulation of the tops weight for the year 2017 and 2018 showed higher simulated values over their respective observed values for different treatment combinations. Among all, D2N3V2 (date of transplanting, 9 December, 175 kg Nitrogen, variety-Disha) obtained significantly higher yield but their simulated values were higher than observed values obtained in field. The mean value of dates of transplanting recorded the highest average yield in D2 (9 December) date of transplanting (57,560 kg/ha) and the lowest was obtained in D1 (29 November) date of transplanting (45,530 kg/ha). The long term variability of cabbage yield on different dates of transplanting and effect of temperature change inferences the maximum mean yield value was recorded at D1 date of transplanting (19 November, 67,05 kg/ha) followed by D2 (29 November, 59,310 kg/ha) and D3 (9 December, 58,190 kg/ha). Under the influence of temperature change and its impact on percent yield reduction, the minimum percent change in yield reduction was recorded at D4 date of transplanting (19 December, -1.1 %) followed by D5 (29 December, -1.9 %) and D3 (9 December, -2.6 %). The maximum percent change in yield reduction was recorded at D1 (19 November, -4.4 %) date of transplanting followed by D2 (29 November, -4.2 %) date of transplanting.
  • Thumbnail Image
    ThesisItemOpen Access
    Effect of microenvironment and nitrogen levels on growth and yield of cabbage (Brassica oleracea var capitata) and its simulation analysis
    (Department of Horticulture (Olericulture), BAU, Sabour, 2021-08) Kumar, Ashutosh; Verma, R. B.
    The investigation entitled “Effect of microenvironment and nitrogen levels on growth and yield of cabbage (Brassica oleracea var capitata) and its simulation analysis” was initiated at Vegetable section, Research Farm, Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India during 2017-18 to 2018-19. The experiment comprising of three dates of transplanting (D1 = 29 November 2017, D2 = 9 December 2017, D3 =19 December 2017), three nitrogen levels (N1=125 kg/ha, N2= 150 kg/ha), N3= 175 kg/ha) and three varieties (V1= Golden Acre, V2= Disha and V3= NS183) was laid out in Split-Split Plot Design (SPD) replicated three times comprised of twenty-seven treatment combinations. Crop simulation model (DSSAT v4.6) was used to describe yield predictability in a set of environment. For DSSAT v4.6 model requirement, the following data sets were recorded/collected and used: - 1. Long term weather data (on daily basis) collected from meteorological centre, BAU Sabour for the parameters like rainfall, solar radiation, temperature (maximum and minimum temperature), 2. soil profile data (Clay, slit and sand (%), Organic carbon (%), pH, CEC (p+/kg), Total nitrogen (Kg/ha), Bulk density (g cm-3), 3. crop management data (Planting method and plant population and experimental data, Fertilizer-amount and time, Number of Irrigation and Harvesting data). Observations were recorded on leaf area Index, leaf weight (g), stem weight (g), root weight (g), leaf number per stem, specific leaf area (cm2g-1), tops weight (kg/plot), yield (kg/ha). The calibration and validation of the model for cabbage and sensitivity analysis was done to see the impact of temperature change on yield of cabbage. In both the years (pooled data) among various dates of transplanting i.e. D2 (9 December) revealed highest leaf weight (291.05 g) stem weight (21.32 g/plant), root weight (25.08 g/plant), leaf number per stem (12.29), tops weight (35.73 kg/plot), yield (529.10 q/ha) and D3 (19 December) exhibited highest leaf area index (3.18). Among various nitrogen levels, N3 (175 kg N/ha) recorded highest leaf area index (3.11), leaf weight (246.65 g/plant), stem weight (17.08 g/plant), root weight (22.42 g/plant), leaf number per stem (12.70), tops weight (33.41 kg/plot) and yield (494.77 q/ha). Among varieties, V2 (Disha) recorded highest leaf area index (3.22), stem weight (20.96 g/plant), root weight (26.12 g/plant), leaf number per stem (14.24), tops weight (34.40 kg/plot) and yield (509.44 q/ha) whereas V3 (NS 183) exhibited maximum leaf weight (249.14 g/plant). Simulation of the tops weight for the year 2017 and 2018 showed higher simulated values over their respective observed values for different treatment combinations. Among all, D2N3V2 (date of transplanting, 9 December, 175 kg Nitrogen, variety-Disha) obtained significantly higher yield but their simulated values were higher than observed values obtained in field. The mean value of dates of transplanting recorded the highest average yield in D2 (9 December) date of transplanting (57,560 kg/ha) and the lowest was obtained in D1 (29 November) date of transplanting (45,530 kg/ha). The long term variability of cabbage yield on different dates of transplanting and effect of temperature change inferences the maximum mean yield value was recorded at D1 date of transplanting (19 November, 67,05 kg/ha) followed by D2 (29 November, 59,310 kg/ha) and D3 (9 December, 58,190 kg/ha). Under the influence of temperature change and its impact on percent yield reduction, the minimum percent change in yield reduction was recorded at D4 date of transplanting (19 December, -1.1 %) followed by D5 (29 December, -1.9 %) and D3 (9 December, -2.6 %). The maximum percent change in yield reduction was recorded at D1 (19 November, -4.4 %) date of transplanting followed by D2 (29 November, -4.2 %) date of transplanting.