An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from June to December 2017 to study the tolerance of local, inbred and hybrid rice varieties to weed stress in early stage of growth during aman season. The experiment consisted of six cultivars viz. Parsoom, Razamohon, BRRI dhan49, Binadhan-7, Agrodhan-13 and Dhani Gold and six different weeding regimes such as weedy (no weed control measure), weed free (weeds are not allowed throughout the growing season), weedy up to 21 DAT followed by (fb) weed free, weedy up to 28 DAT fb weed free, weedy up to 35 DAT fb weed free and weedy up to 42 DAT fb weed free. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replicates. Varieties were found to have significant effect on different crop characters and rice yield. The highest grain yield (6.437 t ha-1) as well as the straw yield (7.736 t ha-1) were found in BRRI dhan49 while the lowest grain yield (1.599 t ha-1) was obtained from Parsoom and the lowest straw yield (4.102 t ha-1) was found in Razamohon. The different growth, yield and yield contributing characters varied significantly in response to variety and different weeding regimes. The highest plant height (122.3 cm), highest number of total tillers hill-1 (7.476) and the highest number of effective tillers hill-1 (6.356) was produced in weeding treatment, weedy up to 28 DAT fb weed free. On the other hand, the shortest plant height (117.1 cm), the lowest number of total tillers hill-1 (6.919), the lowest number of effective tillers hill-1 (5.844) and the smallest panicle length (22.29 cm) were observed in weeding treatment, weedy up to 42 DAT fb weed free. So, in order to get efficient weeding regimes in response to higher grain yield in transplanted aman rice, BRRI dhan49 with weedy up to 21 DAT fb weed free treatment can be recommended.
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LTPs are induced during a wide range of biotic or abiotic stress. Very few LTPs have been shown to act through plasma membrane receptors or to be involved in the hypersensitive response (HR). AZI1, a lipid transfer protein (LTP) interacts with MPK3 to form protein complexes and thereby plays a pivotal role in resistance to abiotic stresses in planta. However, the particular functions of AZI1 orthologs in cereal species under biotic and abiotic stresses yet not been comprehensively defined. In this study, we isolate a novel wheat ortholog of the AZI1 gene, TaAZI1, from ACI gom-1 a popular wheat variety and functionally characterize. Sequence analysis indicated that TaAZI1 contains a hydrophobic protein from soybean (HPS)-like subfamily and has 61% identity with AZI1 proteins from Arabidopsis. Transcription of TaAZI1 was detected mostly in wheat stems and leaves.
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The experiment was conducted at the net house of Agro-environmental Chemistry Laboratory of the Department of Agricultural Chemistry of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh during the period from December 2016 to May 2017. The study was undertaken to evaluatethe toxic effect of chromium on growth, yield and nutritional attributes of BRRI dhan69 and BRRI dhan74. The experiment comprised of two factors, Factor A: two rice cultivars i.e. V1= BRRI dhan69, V2= BRRI dhan74; and six levels of Cr application i.e. T1= 0 mg Cr/kg soil, T2= 12.5 mg Cr/kg soil, T3= 25 mg Cr/kg soil, T4= 50 mg Cr/kg soil, T5= 75 mg Cr/kg soil, T6 =100 mg Cr/kg soil. The experiment was laid out in Completely Randomized Design (CRD) with four replications. Data on different growth parameters, yield attributes, yield and Cr contents were recorded and analyzed. The control treatment attributed the highest values of vegetative growth, yield and yield contributing character, and nutrient content (P, K, S and Na) with V2 variety. Data revealed that the tallest plant was found in T1V1 and shortest plant was found in T6V1 combination also similar trends found in other character. The grain yield of rice ranges from 5.02 t ha-1 to 8.13 t ha-1 while T1V2 produced the highest grains yield and T1V6 produced lowest grains yield. The highest chromium content was found in T6V2. In case of root, there was no value of chromium was found. This might be due to that, applied chromium was transferred from root to grain and straw.
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The specific objectives of the study were to examine the seed supplies, costs and returns, marketing system, seasonal and cyclical price variation, and to estimate the spatial market integration of chilli. Twenty farmers and twenty five intermediaries were selected through convenience sampling procedure. The study was based on both primary and secondary data. Primary data were collected through face to face interview with the respondents from September to October 2010 and secondary data were collected from weekly price bulletin of Department of Agricultural Marketing (DAM), Statistical Yearbook of Bangladesh, and Yearbook of Agricultural Statistics etc. About 90 percent farmers used home supplied seeds in the study area. The intermediaries involved in chilli marketing were: paikars- local and non local, aratdars, retailers. Paikars generally purchased chilli from the farmer and offer same to the aratdars and retailers. In the study area, about 40 percent farmer’s sells dry chilli and 60 percent farmers found who sells both green and dry chillies. In case of processing of chilli, farmers, and retailers cum millers were found as processor at local level. The net profit per kg for farmer and retailer cum millers were Tk. 40.95 and Tk. 52.58, respectively and the return over working capital were 63.93 and 39.06 percent respectively. Seasonal price variation of chilli was very high, range of seasonal price variation was 145.35; highest price index (196.88) was found in the month of October, and the lowest was in the month of March (51.53). The cyclical price variation shows 3 to 5 year cycle for the dry chilli. Analysis of market integration shows that the chilli markets in Bangladesh were well integrated that means changing of price information was quickly delivered to other markets in Bangladesh.
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The experiments were carried out at two locations of BJRI (Dhaka and Manikganj) during August, 2024 to January, 2025 to evaluate the yield and quality performances of some tossa jute varieties. BJRI Tossa pat 8, BJRI Tossa pat 9, O-9897, Robi-2, JRO-524 were used as experimental materials. The experiment was laid out in a randomized complete block design with three replications. Results showed that Dhaka significantly out-performed Manikganj in seed yield per plant (3.08 g vs. 2.70 g), largely due to a higher number of branches per plant. Varietal analysis revealed significant differences across all measured parameters. BJRI Tossa pat 9 consistently emerged as the highest-yielding variety (3.51 g/plant), demonstrating superior branching and capsule formation. Although Robi-2 had the highest plant population and height, its seed yield was the lowest (2.11 g/plant). Significant locations x variety interactions were observed for most traits, highlighting the importance of genotype-by-environment considerations. BJRI Tossa pat 9, particularly when grown in Dhaka, showed exceptional seed yield (3.78 g/plant), suggesting its strong adaptability and potential for increased jute seed production in specific regions. These findings underscore the necessity of location-specific varietal selection for optimizing jute seed yield and quality.
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The specific objectives of the study were to examine the seed supplies, costs and returns, marketing system, seasonal and cyclical price variation, and to estimate the spatial market integration of chilli. Twenty farmers and twenty five intermediaries were selected through convenience sampling procedure. The study was based on both primary and secondary data. Primary data were collected through face to face interview with the respondents from September to October 2010 and secondary data were collected from weekly price bulletin of Department of Agricultural Marketing (DAM), Statistical Yearbook of Bangladesh, and Yearbook of Agricultural Statistics etc. About 90 percent farmers used home supplied seeds in the study area. The intermediaries involved in chilli marketing were: paikars- local and non local, aratdars, retailers. Paikars generally purchased chilli from the farmer and offer same to the aratdars and retailers. In the study area, about 40 percent farmer’s sells dry chilli and 60 percent farmers found who sells both green and dry chillies. In case of processing of chilli, farmers, and retailers cum millers were found as processor at local level. The net profit per kg for farmer and retailer cum millers were Tk. 40.95 and Tk. 52.58, respectively and the return over working capital were 63.93 and 39.06 percent respectively. Seasonal price variation of chilli was very high, range of seasonal price variation was 145.35; highest price index (196.88) was found in the month of October, and the lowest was in the month of March (51.53). The cyclical price variation shows 3 to 5 year cycle for the dry chilli. Analysis of market integration shows that the chilli markets in Bangladesh were well integrated that means changing of price information was quickly delivered to other markets in Bangladesh.
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