http://localhost:8080/xmlui/handle/123456789/7 2026-04-24T15:14:25Z 2026-04-24T15:14:25Z RAFAT-AL-FOYSAL, MD. http://localhost:8080/xmlui/handle/123456789/468 2025-05-28T05:50:15Z 2016-06-01T00:00:00Z

VALIDATION OF NEWLY DEVELOPED RAPESEED-MUSTARD VARIETIES/LINE IN HIGH LAND FOR DEVELOPMENT OF MUSTARD-FALLOW- T. AMAN PATTERN IN SYLHET RAFAT-AL-FOYSAL, MD. The experiment was carried out at the farmer’s fields at Kamalbazar, South Surma, Sylhet district during November 2014 to March 2015 to select high yielding variety(s) of rapeseedmustard suitable for cultivation in high land areas under partially irrigated conditions after harvest of T. Aman rice. The treatments included in the experiment were A. Irrigation levels viz. i. One irrigation at 25 DAS & ii. Two irrigation at 25 DAS and 55 DAS B. Rapeseed-mustard varieties viz. i. Tori-7, ii. BARI sarisha-13 (B. napus), iii. BARI sarisha-14 (B. campestris), iv. BARI sarisha-15 (B. campestris), v. BARI sarisha-16 (B. juncea), vi. Advanced line Nap-205 and vii. BINA sarisha-4 (B. napus). Results indicated that yield and yield contributing characters did not differ significantly due to irrigation levels. The results also revealed that yield and yield contributing characters differed significantly among the varieties. BARI sarisha-16 produced the tallest plant (127.7 cm) compared with the other varieties whereas BARI sharisa-14 produced the shortest plant (60.1 cm) which was statistically similar to Tori-7 (60.5 cm). The highest number (5.9) of branch plant -1 was produced by BARI sarisha-15 which was followed by BARI sarisha14 (5.4 branch plant -1 ) and the lowest (3.1 plant -1 by BARI sarisha-13. Length of siliqua, number -1 of siliqua plant , 1000-seed weight, seed yield, straw yield, biological yield and harvest index significantly differed among the varieties and advanced line. The variety BARI sarisha-16 produced the highest seed yield (993 kg ha , number of seed siliqua -1 ) which was significantly different from the others. BINA sarisha-4 produced the second highest seed yield (898 kg ha -1 ) while the lowest (645 kg ha -1 -1 ) was produced by the variety Tori-7. BARI sarisha-16 required the maximum days (89.3) for maturity but Tori-7 and BARI sarisha-14 had the minimum days (76.3 & 77.5 days respectively). There was no significant variation due to combined effect of variety and irrigation level on yield and yield attributes. Seed yield was positively correlated with plant height, siliqua plant -1 and 1000-seed weight. The newly developed rapeseed-mustard varieties/line had high seed yield and may be well fitted into the Mustard-Fallow-T. Aman rice cropping pattern.

2016-06-01T00:00:00Z JAHAN, NOUSHIN http://localhost:8080/xmlui/handle/123456789/467 2025-05-28T05:44:05Z 2016-06-01T00:00:00Z

AGRO-MORPHOLOGICAL CHARACTERIZATION OF GLUTNOUS, NON-GLUTINOUS, AROMATIC AND NON-AROMATIC RICE CULTIVARS OF SYLHET JAHAN, NOUSHIN Agro-morphological and physico-chemical characterization is fundamental in order to provide information for plant breeding programs. The aim of the present study was to characterize twenty local rice cultivars including glutinous and aromatic rice, following agro-morphological Rice descriptor, IBPGR-IRRI., 1980.The experiment was conducted under field condition during the period from June to December, 2014, at the experimental field of the Department of Agronomy and Haor Agriculture, Sylhet Agricultural University, Sylhet. Grain physicochemical analysis was done at the laboratory of Grain Quality and Nutrition Division, Bangladesh Rice Research Institute (BRRI). Seeds were collected across the Sylhet and the study was conducted following Randomized Complete Block Design (RCBD) with three replications. Polymorphism was observed among 30 of 34 qualitative characters evaluated, whereas significant differences were observed for all the analyzed quantitative traits. In terms of qualitative and quantitative traits Khakibiruin, Kakhibiruin, Gandi, Chorabiruin and Biruin possessed a good number of traits like, leaf length, flag leaf length, tillering habit, culm angle, height, lodging resistance, panicle length number of grain per panicle with higher yield than rest of the cultivars. The highest number of tillers was recorded by the rice cultivar Muktasail which was around 20 tillers per three plant in average and lowest tiller number showed by Madhumadab which was 10 tiller. Highest panicle length showed by cultivar Akhnisail (24.92 cm) and lowest by Chinirsail (19.14 cm). Akhnisail showed highest (138.4) grain per panicle followed by Muktasail and Khakibiruin showed lowest grain per panicle (75). The highest filled grain per panicle was observed in Muktasail (109.9) lowest grain per panicle was observed in Bantos (55.4). Highest grain yield was observed in Kakhibiruin (1.68 t/ha) followed by Khakibiruin and Gandi. Lowest yield was observed in Madhumadab (0.54 t/ha) and Muktasail (0.54 t/ha). All the sources were not significantly different in terms of correlation of yield and yield attributes. Leaf length and breadth, culm length and diameter, flag leaf length, effective tiller, panicle length and 1000-seed weight showed a positive relationship with yield. In physicochemical properties analysis Kakhibiruin, Khakibiruin, Chorabiruin, Biruin and Botabiruin found glutinous type endosperm and Kalijira, Chinigura and Madhumadab found scented cultivar.

2016-06-01T00:00:00Z RUMAN, MD.RAQUIBUL ISLAM http://localhost:8080/xmlui/handle/123456789/466 2025-05-28T05:37:46Z 2016-06-01T00:00:00Z

STUDY ON DIFFERENT WEED MANAGEMENT APPROACHES IN AUS RICE AT SYLHET RUMAN, MD.RAQUIBUL ISLAM An experiment was conducted at the experimental field of Sylhet Agricultural University (SAU) to find out the effective weed management practices in Aus rice. There were eight treatments viz., Herbicide Rifit ( T1), Cicord (T2), T1 & T2 combination ( T3), NPK guti ( T4), Prilled urea (T5), weedy control (T6), weed free control (T7), and hand weeding (T8) with 3 replications. The rice variety was BRRI dhan55 and it was transplanted on 1 week of May and harvested on mid of July, 2014. Ten major weed species were recorded in the experimental plots. Among these four were board-leaved, two were grasses and the rest were sedges. The most prominent weeds were Cyperus iria, Sphenoclea zeylanica, Luduigia hyssopifolia, Cyanotis axillaris, Cyperus flavidus, Lindernia procumbens, Digitaria ischaemum, Leersia hexandra, Fimbristylis milieaceae. The highest weed population (10.04/m st ) was recorded in weedy check (T6) plots and the lowest weed density (0.74/m 2 ) was in weed free check (T7) followed by T3 treated plots. Yield and yield contributing characters like plant height, number of effective tillers per hill, panicle length and number of grain per panicle were significantly affected by different weed management approaches. The highest grain yield (1.64 t ha 2 ) was recorded using in the treatment of NPK guti (T4) which was followed by T3 and the lowest weed yield was recorded in weedy check plots (T6). The partial budget analysis showed that the highest net profit from rice cultivation was in treatment T3 followed by NPK guti (T4) and the lowest profit was in hand weeded plot (T8). The economic analysis also showed that two herbicide mixed used plots had the highest (1.29) benefit-cost ratio (BCR) which was almost similar to NPK guti (1.26). The results indicated that herbicidal treatments were profitable than other treatments. Besides, NPK guti fertilizer used at a time showed an alternative option in weed management in rice field. It may be concluded that herbicidal treatment or using guti NPK can be used as an alternative option when labor is a limiting factor in producing transplanted Aus rice. -1

2016-06-01T00:00:00Z SHAWON, SHUVRA DHAR http://localhost:8080/xmlui/handle/123456789/465 2025-05-28T05:20:13Z 2016-12-01T00:00:00Z

STUDY ON COMPETITIVENESS OF AUS RICE VARIETIES AGAINST WEED INFESTATION SHAWON, SHUVRA DHAR An experiment on Aus rice was conducted at the Agronomy Research Field of Sylhet Agricultural University, Sylhet-3100 as well as in the farmer‘s field of Jaintapur and Gowainghat upazila, Sylhet to find out the competitiveness of Aus rice varieties against weed infestation. Five (5) commercial rice varieties viz. BR3, BRRI dhan48, Aloron, BRRI dhan43, Iratom-24 along with three (3) local cultivars Aina Miah, Doom and Kanihati were included in the research field trial. On the other hand, thirty farmer‘s field were surveyed along with researcher‘s managed trial was conducted to compare weed situation. In farmer‘s field, 5 (five) treatments namely the rice variety BR3, hybrid variety Aloron, BRRI dhan55, BRRI dhan48 and Aina Miah, a local low yielding rice variety/cultivar (LYV) were included. The experiment was started on April 2014 and was harvested on August 2014 depending on the variety. Eight weed species were recorded in the research field trial. Whereas 28 weed species were recorded in the farmer‘s field trial. The most prominent weeds in the experiment were Monochoria vaginalis, Digitaria sangunalis, Leersia hexandra, Cynodon dactylon etc. Among the rice varieties hybrid variety Aloron and BRRI dhan48 showed high competitiveness against weeds. Result indicated in research field that the local variety Aina Miah showed maximum plant height (105.4 cm) and Iratom-24 was the minimum (68.63 cm). The hybrid variety Aloron recorded the maximum panicle length (24.53 cm) and the minimum length (17.27 cm) was in the variety Doom. The highest number (103.53) of filled grains panicle was produced by the hybrid variety Aloron and lowest (41.87) by the variety BRRI dhan43. The highest grain yield (4.04 t ha -1 -1 ) was produced by the hybrid variety Aloron which was statistically identical with the variety BRRI dhan48 (3.19 t ha ) was recorded in local cultivar Doom which was at par with BRRI dhan43 (1.32 t ha -1 ) and Iratom-24 (3.06 t ha -1 ). The lowest yield (1.07 t ha -1 ) and local cultivar Kanihati (1.53 t ha -1 ). The highest weed competitive index was recorded in Aloron (2.27) and the lowest was recorded in Doom (0.42). In the farmer‘s field trial, the hybrid variety Aloron showed the highest grain yield (3.71 t ha -1 ) was recorded in LYV (Aina Miah). The highest weed competitive index (2.05) was recorded in BRRI dhan48, that was statistically identical with the variety Aloron (1.71) and the lowest weed competitive index (0.49) was recorded in BR3. -1 ). The lowest grain yield (1.72 t ha -1

2016-12-01T00:00:00Z