http://localhost:8080/handle/123456789/2841 2026-04-18T14:15:48Z 2026-04-18T14:15:48Z RABBANE, G. M. http://localhost:8080/handle/123456789/3174 2020-03-02T05:17:18Z 2018-06-01T00:00:00Z

EFFECT OF FOLIAR APPLICATION OF GIBBERELLIC ACID ON MORPHO-PHYSIOLOGICAL CHARACTERS AND YIELD OF OKRA (Abelmoschus esculentus L.) RABBANE, G. M. The experiment was carried out in the farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from March to August 2018 to study the effect of foliar application of gibberellic acid on morpho-physiological characters and yield of okra. The experiment considered of two factors. Factor A – two okra variety; V 1 = BARI dheros-1 and V 2 = Lal teer hybrid dheros and Factor B: Gibberellic acid (GA 3 ) - 4 levels; G 0 = Control (0 ppm GA 3 ), G 1 = 50 ppm GA 3 , G 2 = 100 ppm GA 3 = 150 ppm GA 3 and G 4 = 200 ppm GA 3 . The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Data on different growth, yield components and yield of okra were recorded. Different growth and yield parameters were significantly influenced by variety and GA 3 and also with their combinations. Results showed that the variety V 2 (Lal teer hybrid dheros) gave highest yield and yield contributing parameters compared to V 1 (BARI dheros-1). Again, regarding, GA 3 effect, the treatment G 2 (100 ppm GA 3 ) it gave the best performance on yield and yield contributing parameters. Considering treatment combination of variety and GA 3 , the highest SPAD value (68.35 at 50 DAS), length of fruit (11.70 and 14.90 cm at 60 and 90 DAS, respectively), diameter of fruit (1.86 and 1.92 cm at 60 and 90 DAS, respectively), number of fruits plant (24.60), fresh weight of fruits plant -1 (348.20 g), fruit yield plot -1 -1 (6.26 kg) and fruit yield ha (17.88 t) was obtained from the treatment combination of V 2 G 2 whereas the lowest SPAD value (40.65 at 50 DAS ), length of fruit (6.67 and 8.87 cm at 60 and 90 DAS, respectively), diameter of fruit (1.34 and 1.42 cm at 60 DAS and 90 DAS, respectively) number of fruits plant -1 (24.60), fresh weight of fruits plant (198.70 g), fruit yield plot -1 (3.47 kg) and fruit yield ha -1 (9.92 t) were observed from the treatment combination of V 1 G O. These results suggested that gibbrellic acid increased the yield of okra. -1 , G 3 -1 A Thesis Submitted to the Department of Agricultural Botany Sher-e-Bangla Agricultural University, Dhaka In partial fulfillment of the requirements for the degree of MASTER OF SCIENCE (MS) IN AGRICULTURAL BOTANY SEMESTER: JANUARY- JUNE, 2018

2018-06-01T00:00:00Z ROY, RIPON KUMAR http://localhost:8080/handle/123456789/3173 2020-03-02T05:11:47Z 2018-06-01T00:00:00Z

EFFECT OF POTASSIUM IN MITIGATING ADVERSE EFFECT OF SALT STRESS ON GROWTH, DEVELOPMENT AND YIELD OF RICE PLANT (Oryza sativa L.) ROY, RIPON KUMAR A pot experiment was conducted at the net house of the Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, during Boro rice cropping season of the year of 2017-18 to observe the effect of potassium in mitigating adverse effect of salt stress on growth, development and yield of rice plant (Oryza sativa L.). The experiment was conducted using two salinity levels with potassium viz. S 0 = Control, S 1 = 4dSm -1 salt, S 1 K 1 = 4dSm -1 salt + 80 ppm potassium, S 1 K 2 = 4dSm -1 salt + 160 ppm potassium, S 2 = 6 dSm -1 , S 2 K 1 = 6 dSm + 80 ppm potassium, S 2 K 2 = 6 dSm -1 + 160 ppm potassium. The experiment was conducted in Randomized Complete Block Design (RCBD) having one factor with three replications. The results and the effect on morphological characters indicated that all parameter were influenced by salinity and potassium. Among 3 salinity level (0, 4 & 6 dSm -1 ), the damaging effect was found more in higher stress (6 dSm ).But potassium supplementation along with salt greatly reduced the damaging effect of salt. Out of the 2 levels of potassium 160 ppm potassium significantly reduced the damaging effect of salt. Therefore, for cultivation of BRRI dhan67 under saline condition 160 ppm potassium application could be a better practice for getting higher yield. -1 -1 A Thesis Submitted to the Department of Agricultural Botany Sher-e-Bangla Agricultural University, Dhaka, in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: JANUARY-JUNE/2018

2018-06-01T00:00:00Z ABHI, M. ASADUZZAMAN http://localhost:8080/handle/123456789/3172 2020-03-02T05:08:16Z 2018-06-01T00:00:00Z

APPLICATION OF PLANT GROWTH REGULATORS AND MICRONUTRIENTS ON GROWTH, YIELD AND QUALITY OF TOMATO ABHI, M. ASADUZZAMAN The growth, yield and quality of tomato largely depend on soil and climatic conditions and also on BARI Tomato 14. Among these, proper application of plant growth regulators and B plays a vital role.A field experiment was conducted at Sher-e-Bangla Agricultural University Farm, Dhaka, Bangladesh during October 2017 to April 2018 to evaluate the effect of foliar application of IBA, GA and B on yield and quality of tomato. Single variety BARI Tomato-14, and foliar application of IBA 5ppm, GA 3 5ppm and B 2mg/L were used to conduct this experiment. The experiment was laid out in a Randomized Complete Block Design (RCBD) having single factor and replicated three times. Data were collected on plant height, number of leaves plant -1 3 , number of branches plant -1 , Leaf Area Index(LAI), chlorophyll content of leaf, number flowers cluster pant -1 , number of fruit plant , weight of fruit, yield hectare -1 , Vitamin-C content and TSS% content. A statistically significant variation was recorded in terms of all the characters related to growth and yield quality of tomato. The maximum plant height, number of branches plant -1 , length of branch respectively 103.03 cm at 90 DAT, 65.70 at 90 DAT, 13.11 at 90 DAT was observed in treatment of T 7 (IBA 5ppm+GA 5ppm+B). The minimum plant height, number of branches plant -1 3 , length of branch respectively 82.22 cm at 90 DAT, 47.88 at 90 DAT, 10.33 at 90 DAT was observed in treatment of T 1 at 90 DAT in treatment both T 7 0 -1 (control). The maximum number flowers cluster plant (IBA 5ppm+GA 3 5ppm+B) and T 4 (IBA 5ppm+GA 5ppm) and number of fruit plant -1 160 at 90 DAT was observed by treatment of T (IBA 5ppm+GA 3 5ppm+B). The minimum number flowers cluster plant -1 8.89 at 90 DAT in treatment both T 0 (control) and number of fruit plant -1 60.00 at 90 DAT was observed by treatment of T 0 (control). The maximum yield of fruits hectare -1 (83.30 tones) was obtained from treatment of T 7 (IBA 5ppm+GA 3 5ppm+B). The lowest yield of fruits hectare (33.75 tones) was obtained from treatment of T 0 (B). 3 -1 7 - A Thesis Submitted to the Department of Agricultural Botany Sher-e-Bangla Agricultural University, Dhaka, in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: January-June, 2018

2018-06-01T00:00:00Z KHATUN, MST. MARGINA http://localhost:8080/handle/123456789/3171 2020-03-02T05:02:17Z 2018-06-01T00:00:00Z

EXOGENOUS APPLICATION OF SALICYLIC ACID ON MITIGATION OF DROUGHT STRESS OF BRRI DHAN28 KHATUN, MST. MARGINA The experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka during the period from November 2017 to May, 2018 to know the effect of foliar application of salicylic acid on mitigation of drought stress of BRRI dhan28. the experiment consist of two factors with different levels of treatments viz A: T 0 = 0.0 µMm −2 SA, T 1 = 250 µMm −2 SA, T 2 = 500 µMm −2 SA, T 3 = SA, T 4 = 1000 µMm −2 SA. B: different level of drought stress, S 0 = control (normal irrigation), S 1 = moderate drought stress (water withheld from flowering stage to season end), S 2 = Sever drought stress (water withheld from panicle initiation stage to season end). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Significant variation was recorded for data on growth, yield and yield contributing parameters. The maximum values for plant height, number of leaves hill -1 , number of tillers hill -1 , dry weight hill , leaf area index, relative water content (%), leaf membrane stability index, flag leaf chlorophyll content (µMm −2 ), thousand seed weight, number of filled grains panicle , 1000 grain weight (g), grain yield, and straw yield, biological yield, harvest index were obtained from foliar application of SA @ 750 µMm −2 ). Significant influence was remarked in terms of all parameter with different level of drought stress of BRRI dhan28. Results showed that the highest plant height, number of leaves hill -1 750 µMm -1 -1 , number of tillers hill , root dry weight plant -1 , dry weight plant -1 , leaf area index, relative water content, leaf membrane stability index, flag leaf chlorophyll content, number of filled grains panicle -1 was also obtained from normal irrigation without drought stress. The maximum grain yield was obtained from normal irrigation. The treatment normal irrigation produced the highest straw yield, biological yield and harvest index. Interaction effect of salicylic acid and different level of drought stress was significantly influenced for all parameter measured. The maximum grain yield (12.02 g hill -1 ) was with foliar application of SA @ 750µMm −2 with normal irrigation. BRRI dhan 28 planted with drought stress at panicle initiation stage (severe drought stress) would be mitigated by the application of SA @ 750µMm −2 . −2 -1 A Thesis Submitted to the Faculty of Agriculture Sher-e-Bangla Agricultural University, Dhaka, In partial fulfillment of the requirements for the degree of MASTERS OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: JANUARY-JUNE, 2018

2018-06-01T00:00:00Z