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Despite the fact that people are more familiar with its drawbacks, water hyacinth has a variety of uses. This study aims to assess local inhabitants' opinions of water hyacinth and its sustainable, environmentally beneficial uses. In order to perform the study properly, we moved on to the study areas that are closer to Roa beel and a questionnaire with seven components and seven parameters was used. The Roa Beel is situated in the Chandpur Union neighborhood of the Kishoregonj district's Katiadi Upazila, Kishoreganj, Bangladesh. During the rainy season, excessive water hyacinth was found in the study region, and people of the villages of Sheker Para, Purbo Para, and Modinas Para in the Kishoregonj district were surveyed. The study assesses the locals' perceptions of their knowledge and understanding of water hyacinth, their management techniques, the benefits and drawbacks of water hyacinth, and their actual use of it in their daily lives as well as in various sectional activities like fishing, livestock rearing, agricultural farming, particularly in floating agricultural practices, and for industrial purposes. A surplus of water hyacinth in the beel can be utilized to create a promising industry for the region, especially if it is converted into affordable, environmentally acceptable animal feed, bio-fertilizer, and biogas. Undoubtedly, this will improve local environmental management efforts and provide more opportunity for local unemployed people to find employment.

Bangladesh is a densely populated country where the oil crisis is one of the major issues. On the other hand, the balanced fertilizer used is lacking until now. The purpose of the study is to investigate the yield of Mustard (Brassica napus L.) Binasarisha-9 is influenced by the different applications of organic fertilizers. The experiment was conducted at Bangladesh Institute of Nuclear Agriculture (BINA), substation, Satkhira during the rabi season of 2020-2021 to observe the effect of organic and inorganic fertilizers on the yield of mustard (Brassica napus L.) viz Binasarisha-9 and determine the best dose of combined application of organic and inorganic fertilizers for optimum yield of mustard (Brassica napus L.) viz Binasarisha-9. The experiment was laid out in a randomized complete block design (RCBD) comprising five treatments (T₁= Absolute control, T₂=recommended dose chemical fertilizer (RDCF), T₃=50% RDCF+ 5t/ha vermicompost, T₄= 50% RDCF+ 5t/ha poultry manure, T₅= 50% RDCF+ 5 ton/ha cow dung) with three replications were executed to conduct the study. Mustard (Brassica napus L.) was responded significantly to T₃ treatment (50% RDCF+ 5t/ha vermicompost). The highest mustard yield was recorded (2.14 tons/ha) from T₃ treatment whereas the lowest mustard (Brassica napus L.) yield (0.81 ton/ha) was obtained from T₁= (absolute control) treatment. Balanced nutrient management application significantly increased mustard yield compared to the imbalanced treatment. Organic fertilizers (vermicompost, poultry manure, cow-dung) showed better nutrient uptake compared to chemical fertilizers. However, vermicompost tends to be the most suitable organic source for higher yield and thus is the proper substitute of the most commonly used nutrient sources for the production of mustard.

An experiment was conducted during Kharif-1 of 2022 at Bangladesh Institute of Nuclear Agriculture (BINA), Substation, Satkhira to know the effect of foliar application of micronutrients (zinc and boron) on the growth and yield of mungbean. There were three levels of zinc (Zn) (0.2%, 0.4%, 0.6%) and boron (B) (0.2%, 0.4%, 0.6%) along with a blanket dose of urea (35 kg ha^-1, triple super phosphate (TSP) (80 kg ha^-1), murite of potash (MoP) (40 kg ha^-1) and Sulphur (60 kg ha^-1). The growth and yield of mungbean was significantly affected by foliar application of different levels of Zn and B. Results revealed that foliar application of Zn at the rate of 0.6% and at the rate of B 0.6% along with recommended dose at 45 days after sowing increases the branches/plant, fresh weight (g), dry weight (g), chlorophyll content, flower/plant, pod/plant, seed/pod thereby increase seed yield. Therefore, the foliar spray of 0.6% Zn significantly increased and influenced 1000 seed weight (g), decreased days to flowering, increased number of seed/pod and yield ton/ha along with blanket dose of Urea, TSP, MoP, gypsum might be considered as suitable dose for mungbean production in southern region of Bangladesh.

Two advanced lines: BR8693-8-4-2-1 and BR8693-17-6-2-2, along with BRRI dhan49 (S. Ck) and BRRI dhan33 (R. Ck) as checks were tested at farmers’ field in eight locations such as West Byde (BRRI Gazipur), Khulna (Dumuria), Habiganj (Sadar), Chapainawabganj (Gomostapur), Rangpur (Sadar), Feni (Dagonbhuyan), Chattagram (Hathazari) and Barishal (Sadar) during the season of Transplanting Aman 2018. The trial was replicated three times in each location. The unit plot size was 17.94 m² (4.6m x 3.9m). Seeding emergence for eight locations varied from 11-17 July 2018. Seedling age varied from 25-30 days among the locations. Seedlings were transplanted at 20 cm x 15 cm spacing. NPKS and Zn fertilizers were applied at the rate of 0, 15, 50, 12 and 3.6 kg ha^-1, respectively. All fertilizers except urea were applied as basal whereas, urea was applied in 3 equal splits at 10, 25 and 40 days after transplanting (DAT) Other standard management practices were followed as and when necessary. No insecticide was used because the two advanced lines were insect resistant and diseases were not controlled (to identify susceptibility and tolerance level of lines). Date of seeding, transplanting, flowering and maturity, lodging tolerance, pest and disease incidence, phenotypic acceptance at vegetative and ripening stage, yield and yield components were recorded. Among the two advanced lines, BR8693-8-4-2-1 line was statistically significant from BR8693-17-6-2-2, BRRI Dhan49 and BRRI Dhan33 respectively and the disease reaction, farmers’ opinion, and special character of insect resistant, BR8693-8-4-2-1 was found to be superior for further variety trial. The main purpose of the experiment is to recommended insect resistant rice genotype for proposed variety trail. For yield estimation, 9 m² sample area from each plot was harvested at maturity and grain yields were adjusted to 14% moisture content.