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Research in Agriculture, Livestock and Fisheries
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This is an Open Access Journal

Open Access journal
ISSN (Print) 2409-0603 - ISSN (Online) 2409-9325
Published by Bangladesh Journals Online

[87 journals]

Effect of plant growth regulators on growth, yield and yield contributing
characters of brinjal (Solanum melongena L.) in coastal zone of Bangladesh
- Authors: Israt Jahan Misu, Md Sabuj Ali, Ashraful Islam Rony, Md Nomun Siddike, Naushin Alim Payel, Md Fakhrul Islam, Shohel Tanvir, Md Mafin Shikder, Gazi Md Mohsin
  Pages: 91 - 97
  Abstract: Salinity is a serious environmental issue that reduces the yield of vegetable crops. Brinjal is one of the world's most popular vegetable crops and its productivity and quality are heavily influenced by the salt content in the root area. Plant growth regulator management, however, is a key factor that can be used to increase brinjal production in moderate saline soils. The experiment was carried out at the Agricultural Research Field, Noakhali Science and Technology University, Noakhali, Bangladesh during the period from January to June 2022, to observe the effect of plant growth regulators on growth, yield, and yield contributing characters of brinjal (Solanum melongena L. V: Purple king ). The experiment was followed Randomized Complete Block Design (RCBD) comprising four treatments with three replications. The treatments were T0 (Control), T1 (Salicylic acid @ 60 ppm), T2 (Gibberellic acid @ 60 ppm), T3 (Naphthalene acetic acid @ 60 ppm). Data were recorded from different stages of plant growth viz, plant height, number of leaves per plant, number of branches per plant, number of fruits per plant, fruit length, fruit diameter, fruit weight, and yield. The maximum plant height (100.00 cm), number of leaves per plant (197.17) , number of branches per plant (17.17), number of flowers per plant (62.67), number of fruits per plant (34.42), fruit length (25.50 cm), fruit diameter (3.33 cm), weight of fruit (92.67 g), yield per hectare (22.17 t ha-1) were measured from treatment T2 (GA3 @ 60 ppm). Results conclude that the application of gibberellic acid @ 60 ppm for brinjal cultivation gave better growth and yield in moderate saline soils. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 91-97
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68752
  Issue No: Vol. 10, No. 2 (2023)
Effect of different doses of nitrogen fertilizer (urea) on the yield
performance of mustard (Brassica sp.)
- Authors: Md Nahid Hashan, Riad Mahmud, Mohammad Jannatul Mostafa Sizan, Kazi Md Younus Tanim, Biswajit Das, Rafat Nur Abdullah Khan , Shohrab Hoshain
  Pages: 99 - 107
  Abstract: An experiment was conducted at the agriculture research field of Noakhali Science and Technology University, Noakhali-3814, Bangladesh during the period 1st November 2021 to 30 January 2022 to observe the effect of different levels of nitrogen (N) fertilizer on growth and yield of mustard. The experiment comprised four levels of nitrogenous (N) fertilizer viz; control (N0) 0 kg ton ha-1, (N1) 90 kg ton ha-1, (N2) 140 kg t ha-¹, (N3) 190 kg t ha-1. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Application of different levels of nitrogen significantly influenced the Plant height (cm), branches plant-1 (no.), effective siliqua plant-1 (no.), seeds siliqua (no.), 1000-seed weight (g), grain yield (t ha-1), stover yield (t ha-¹), biological yield (t ha-1), harvest index (%) content of mustard. Application of 190 kg ha-1 nitrogen gave the maximum plant height (77.83 cm), Branches plant-1 (5.80), Effective siliqua plant-1 (23.60), Siliqua length (6,17 cm), Seeds siliqua (33.87), 1000-seed weight (3.57 g), grain yield (1.53 t ha-1), Stover yield (3.90 t ha-1), Biological yield (5.43 t ha-1) and the lowest yield was found from control (N0) 0 kg ton ha-1. Consequently, ‘BARI SARISHA-14’ may be suggested to grow for higher yield with N3 treatment. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 99-107
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68753
  Issue No: Vol. 10, No. 2 (2023)
Effect of various doses of cowdung and nitrogen on the yield performance
of mustard in coastal area of Bangladesh (Brassica sp.)
- Authors: Nadia Islam, Md Nahid Hashan, Rayhan Ahammed, Biswajit Das, Shamsunnahar, Shohrab Hoshain
  Pages: 109 - 122
  Abstract: The experiment was conducted at the agriculture field laboratory of Noakhali Science and Technology University during the period from October 2021 to January 2022 to observe the effect of various doses of cowdung and nitrogen on the performance of mustard. The experiment comprised of two factors viz: cowdung and nitrogen. One organic fertilizer like different level of cowdung-control 0 t ha-1 (C0), 15 t ha-1 (C1), 30 t ha-1 (C2), 45 t ha-1 (C3) and another inorganic fertilizer nitrogen - control 0 kg ha-1 (N0), 100 kg ha-1 (N1), 200 kg ha-1 (N2), 300 Kg ha-1 (N3). The experiment was laid out in Randomized Complete Block Design (RBCD) with three replications. Application of different doses of cowdung and nitrogen significantly influenced the Plant height (cm), branches plant-1 (no.), effective siliqua plant-1 (no.), seeds siliqua-1 (no.), 1000-seed weight (g), seed yield (t ha-1), stover yield (t ha-1), biological yield (t ha-1) and harvest index (%) of mustard. The maximum plant height, number of branches plant-1, number of effective siliqua plant-1, siliqua length, number of seeds siliqua-1, 1000-seed weight, seed yield, stover yield, biological yield and harvest index was obtained with the application of 45 t ha-1 cowdung (C3). On the other hand, with the application of 300 kg ha-1 N the maximum plant height, number of branches plant-1, number of effective siliqua plant-1, siliqua length, number of seeds siliqua, 1000-seed weight, seed yield, stover yield, biological yield was found except the harvest index. In case of the interaction effect of treatment, the highest seed yield (1.77 t ha-1) was obtained from the treatment combination of C3N3 (45 t ha-1 cowdung + 300 kg ha-1 N) and the lowest seed yield (0.93 t ha-1) was found from the control (C0N0) treatment. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 109-122
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68761
  Issue No: Vol. 10, No. 2 (2023)
Quality and storability of onion (Allium cepa L.) as influenced by
varieties and household organic mulches
- Authors: Md Harun Ar Rashid, Tangida Akter, Md Golam Rabbani, Mst Tamanna Tasmim, Ashrafun Nahar
  Pages: 123 - 131
  Abstract: An experiment was conducted to study the effects of varieties and household organic mulches on growth and yield of onion at the Horticulture Farm of the Department of Horticulture, Bangladesh Agricultural University, Mymensingh during the period from October 2020 to March 2021. The experiment consisted of three onion cultivars of Bangladesh viz. Taherpuri, BARI Piaz 1 and BARI Piaz 4, and five household organic mulches, viz. T0 = Control (no mulching), T1 = vegetables wastes, T2 = rice straw, T3 = banana leaf and T4 = water hyacinth. The two-factor experiment was carried out in Randomized Complete Block Design with 3 replications. Results revealed that the parameters under study showed significant variation between onion varieties and mulching. Results showed that the highest percent of weight loss of bulbs (31.19%) was observed in V3T4 followed by V3T1 (29.89%) and the lowest percentage of weight loss of bulbs (24.66%) was observed in V1T1. The highest percentage of dry matter content of bulb (13.13%) was recorded in V3T4 followed by V3T1 (12.54%) and the lowest percent dry matter content of bulb (8.08%) was observed in V1T0. The highest percentage of splitted bulb (10.33%) was observed in V3T4 followed by V3T1 (9.33%) and the lowest percentage of splitted bulb (1.33%) was observed in V1T0 (Table 4). On the other hand, the highest percentage of rotten bulb (9.00%) was observed in V3T0 followed by V2T0 (8.33%) and the lowest percentage of rotten bulb (2.00%) in V1T2. Therefore, the combined use of water hyacinth along with Taherpuri was found to be better with respect to the quality and storability of onion. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 123-131
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68762
  Issue No: Vol. 10, No. 2 (2023)
Phenology and yield response of wheat varieties as influenced by sowing
dates at gonde and ardayita seed production farm, Ethiopia
- Authors: Tatek Tamiru, Girma Gemedi, Berhanu Debelu, Henok Tesfaye
  Pages: 133 - 145
  Abstract: Wheat is one of Ethiopia's main foods, contributing to daily caloric consumption. Due to environmental conditions such as distribution and length of the rainy season shifting from time to time elsewhere, particularly at Gode and Ardayita seed production farm, sowing timing and varietal selection are key factors for low yield of wheat crop. This Experiment was designed in a randomized complete block design with three-replications which contain four sowing dates, ranging from June 17 to July 18 at ten-day intervals, and four wheat varieties namely Kingbird, Hidase, Picaflor, and Ogolcho combined to form 16 treatments. According to the result, on days to heading, there was a significant interaction effect of variety and location and the highest number of days (70.42) was obtained at the Ardayita location on Kingbird variety. On the day of heading, there is also a substantial interaction effect of location and sowing date, the maximum days (72.00) were observed at Ardayita on the early sowing date (June-17). The maturity dates of the two locations varied significantly, the longer (116.17) days were recorded at Ardayita. The effect of variations on days to maturity of varieties also significant, Ogolcho variety had the highest maturity (120.04) days. Date of sowing also has a significant effect on maturity date; the highest number of days (116.96) was recorded on June 17 sowing date. The grain filling period significantly vary among the varieties, the Ogolcho variety had the highest number of days (53.25). Grain filling period also had significant variation on date of sowing; the earliest sowing date (June 17) has the longest date (49.96). On the other hand, location had no effect on the grain-filling period, plant height and seed yield. Sowing date and location significantly interact on grain yield of wheat. The maximum (6.38 ton ha-1) seed yield was recorded at Gonde location on second (June 28) sowing date and Ardayita place obtained highest yield at first sowing date (June 17). There was a significant interaction between sowing date and varieties on yield of wheat. From the result Hidasse variety obtained highest yield (6.58 ton ha-1) on the second sowing date (June 28) whereas the Ogolch variety recorded highest (6.28 ton ha-1) at the first sowing date (June 17). Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 133-145
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68763
  Issue No: Vol. 10, No. 2 (2023)
Pre-scaling up of ground nut varieties in selected districts of West and
Kellem Wollega zones, Ethiopia
- Authors: Hika Tasfa , Damaksa Umar
  Pages: 147 - 153
  Abstract: The study was conducted in Dale sadi, Dale wabera and Sayo districts of Kellem wollega Zone and Gimbi districts of west Wollega zone for two consecutive years of production(2016/17 and 2017/18 G.C ) on farmers’ field. The objective of the study was to pre-scale up and popularize the best-performing and preferred groundnut variety in the study area. The study addressed a total of 90 farmers in the two years of the project span. From a total of 90 farmers, male represents 73 and female 17. During farmers’ selection process, both female and male farmers were incorporated so as to avoid gender bias. Training was given to the selected farmers, development agents and district experts about improved groundnut technologies production and management. Full packages of the technologies were provided. Variety Manipinter was planted on plot area of 0.25ha on respective farmers’ field in the study area. The recommended rate of NPS 100kg/ha and Row planting method with the spacing of 60cm between rows and 10cm between plants were used respectively. To enhance farmer’s knowledge on Groundnut training was given for target community on agronomic practice of Groundnut. During training a total of 117 target communities were participated on training out of which 84 were male and 33 were male. An average production of 14.935 qt/ha and a total of 336 quintal of groundnut yield was harvested during project life span. Finally, farmers feedback concerning technology was collected and incorporated, accordingly the farmers feel as the Manipinter have relatively high yield, good seed quality (Grain size, color), disease tolerant than previously used varieties. Generally, since it is impossible to address all farmers only by the effort of the research center, district agriculture and natural resource bureau in collaboration with zonal agricultural and natural resource office and input supplying NGO’s should hold the turn to scale up the technology in wider scale. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 147-153
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68769
  Issue No: Vol. 10, No. 2 (2023)
Technical efficiency of early variety country bean cultivation in selected
areas of Bangladesh: a stochastic frontier approach
- Authors: ASM Golam Hafeez, Md Abdullah A Kafi, Md Rezaul Karim, Shamim Ahamed, Mehdee Mohay Men Ur Rahman
  Pages: 155 - 164
  Abstract: The present study was undertaken to measure the profitability and technical efficiency of early variety country bean cultivation in selected areas of Chatmohar upazila of Pabna district. A total of 60 early variety country bean-growing farmers were selected from three villages of Chatmohar upazila using a simple random sampling technique. Stochastic frontier production function was applied to determine the technical efficiency of the country bean growers. Technical inefficiency effects model was also applied to identify the demographic and socio-economic factors by which inefficiency effects are influenced. The study revealed that Benefit Cost Ratio (BCR) was the highest (2.29) for large farmers followed by medium (2.27) and small farmers (2.21). The result of the Maximum Likelihood Estimates (MLE) showed that human labor, fencing and manure had significant positive impact whereas the irrigation and insecticides had a negative impact on the production of country bean. The results of technical inefficiency effect model showed that farmer’s age, farm size had negative impact while education, family size and farm credit had positive impact on technical efficiency. The inefficiency analysis results indicated that farm level technical efficiency ranged between 43.06% and 98.01% with a mean technical efficiency of 91.9% implied that there was potential to increase country bean production among smallholder farmers in the study area by 8.1% through efficient use of present technology. The main constraints to country bean (early variety) production were identified as- infestation of pest and disease, high price of inputs, paucity of quality seed and fertilizer, scarcity of human labor, lack of technical knowledge, limited access to institutional credit etc. Despite the constraints, there is a great prospect of early variety country bean production in the study areas. Country bean (early variety) production could be increased in a sustainable manner if farmers would be provided with government support regarding lower price of input, fair price of output, marketing facilities, training for farmers and farm credit at low interest rate, reducing the activities of syndicate of middlemen. Government should provide necessary support to the farmers for ensuring sustainable production of early varieties of country bean. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 155-164
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68770
  Issue No: Vol. 10, No. 2 (2023)
Influence of vermicompost on growth and yield of okra (Abelmoschus
esculentus) in coastal area of Bangladesh
- Authors: Rabeya Khatun, Md Sabuj Ali, Dewan Reashat Islam, Sadia Rahaman, Tamanna Islam, Nur Mohammad, Md Jakaria Rahman, Md Nomun Siddike, Gazi Md Mohsin
  Pages: 165 - 173
  Abstract: An experiment was conducted at the research field in the Department of Agriculture, Noakhali Science and Technology University, Noakhali, Bangladesh during the period from March to July 2022 to study the effect of vermicompost on growth and yield of okra. The experiment was laid out in a Randomized Complete Block Design (RCBD) comprising four treatments with three replications. The four treatments were T0 (Control), T1 (Vermicompost 10 t ha-1), T2 (Vermicompost 15 t ha-1) and T3 (Vermicompost 20 t ha-1). Green finger F1 okra used as planting material. Data were recorded from different stages of plant growth viz, plant height, days of flowering, fruit per plant, fruit length, fruit diameter, fruit weight, fruit weight per plant, yield per plot and yield per hectare. All the recorded parameters were statistically significant (P<0.01). The maximum days to first flowering (47.31 days) was recorded from T0 (Control), while the minimum days for first flowering (40.67 days) was found from treatment T3 (Vermicompost 20 t ha-1). The maximum height of okra plant (100.43 cm), number of fruits per plant (22.13), fruit length (13.60 cm), fruit diameter (2.01 cm), fruit weight (13.47 g), fruit weight per plant (198.02 g), yield per plot (1.78 kg), yield per hectare (17.8 t ha-1) were found in treatment T3 (Vermicompost 20 t ha-1) whereas lowest data recorded in treatment T0 (Control). Observing the results, it can be stated that application of vermicompost @ 20 t ha-1 for okra cultivation gave better growth and yield in the coastal area of Bangladesh. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 165-173
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68775
  Issue No: Vol. 10, No. 2 (2023)
Morpho-physiological and yield attributes of boro rice varieties as
influenced by different nitrogen sources
- Authors: Parvin Akter Bithy
  Pages: 175 - 182
  Abstract: The present study was carried out at the Research Field of Sher-e-Bangla Agricultural University (SAU), Dhaka during Boro season, 2021-2022 to discover the best nitrogen source for enhancing Boro rice grain production. The experiment consisted of two factors: A) Three varieties: BRRI dhan29 (V1), BRRI dhan58 (V2), and Heera (V3). B) Four nitrogen sources: no nitrogen (T1), BRRI-recommended prilled urea (T2), recommended dose of mixed NPK (T3), and BARC-recommended USG (T4). The experiment was laid out in split plot design with three replications where main plot was for nitrogen source and subplot was for variety. USG treatment resulted in the highest grain production (8.6 t/ha) and the lowest percentage of spikelet sterility of any nitrogen source tested. Except for harvest index, all of the examined characteristics differed considerably between types. This is mostly due to BRRI dhan29 having the maximum number of full grains (98.8/panicale) and a significantly lower degree of spikelet sterility (7.3%). Among the interaction effects, the combination of the USG application with BRRI dhan29 showed the greatest performance in terms of delivering the maximum grain production (9.3 t/ha) by significantly reducing spikelet sterility. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 175-182
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68776
  Issue No: Vol. 10, No. 2 (2023)
Integrated nutrient management for jute and allied fibre crops in
Bangladesh: a review
- Authors: Md Imran Ali, Sirajam Monira, Syed Nazrul Islam, Ronzon Chandra Das, Supti Mallick
  Pages: 183 - 188
  Abstract: Jute is well-known for its distinctive versatility in Bangladesh and comes in first place in terms of output, which illustrates the jute crop's dual character of quantity and quality. This review discusses the significance of the jute crop and the advantages of nutrient management techniques in the jute and allied fibre crops (JAF), which increase output, fecundity, and output to fulfill the nation’s potential fibre requirements. Due to the demand for JAF fibres in the production of various goods, fibres make a significant economic contribution to Bangladesh. It not only gives the rural population a job, but it also generates cash for the area. If integrated nutrient management strategies are used, it will be simple to meet future demand for jute-based products while still preserving agriculture. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 183-188
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68777
  Issue No: Vol. 10, No. 2 (2023)
Calf diseases at Jhenaidah district, Bangladesh: Epidemiological status
with relation to age and season
- Authors: Biplob Kumar Sarker, Md Shah Alam
  Pages: 189 - 197
  Abstract: In Bangladesh calves are affected by several types of diseases and most of them are parasitic, infectious, metabolic or nutritional, surgical affection etc. causing severe economic losses in every year. The study was conducted to investigate the epidemiological status of calves’ diseases with relation to age and seasonal variation at Jhenaidah district, Bangladesh. A total of 12525 clinical cases were registered in all 6 Upazila of Jhenaidah district for the clinical diagnosis and therapeutic purposes during a period of two years, which were analyzed to evaluate the prevalence of clinical diseases in calves. Each of the clinical case was diagnosed on the basis of history, general examination, physical examination and clinical findings. Among the recorded cases the highest prevalence of clinical cases in calves were found to be round worm infestation ( 14.80%), and followed in descending order by non-specific diarrhoea ( 9.20 %), liver fluke infestation ( 8.34%), anorexia ( 7.95%), lice infestation ( 6.66%), debility (6.42%), wounds (4.68 %), tick infestation (3.93 %), tape worm infestation (3.54%), non-specific fever & navel ill (3.42%), coccidiosis (3.35%), conjunctivitis (3.16%), FMD (2.83%), pneumonia (2.49%), allergy/skin disease (2.30%), coldness (2.06%), tympany/bloat (1.71%), calf-scour (1.61%) etc. Among the general clinical disorder, the highest prevalence of clinical cases was non-specific diarrhoea (9.20%), among parasitic disease the highest prevalence was round worm infestation (14.80%), among infectious disease the highest prevalence was coccidiosis (3.35%), among surgical affection the highest prevalence was wound (4.68%). The influence of age and season on the occurrence of these diseases was considered. Immuno prophylaxis and hygienic management should be introduced to curtail the prevalence of calf diseases and disorders. So more epidemiological and intensive laboratory study should be needed to confirm the etiology, prevention and control measures of the diseases and disorders in cattle at the study area. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 189-197
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68782
  Issue No: Vol. 10, No. 2 (2023)
Larval and adult surveillance of mosquitoes (Diptera: Culicidae) in Pabna,
Bangladesh
- Authors: Md Humayun Kabir, Aparajita Kabiraz, Md Abdul Alim, Thahsin Farjana
  Pages: 199 - 206
  Abstract: An entomological study was conducted at Ishwardi Upazila of Pabna district to identify the species and breeding sites of mosquitoes. Adult mosquitoes were collected using collecting net, human bait, light trap and larvae were collected by ladle spoon, mug, dipper, and pipette from rail junction, bazar, house, cattle shed, rice field, sugarcane field, rice mill, paper mill, drains etc. A total of 2647 mosquito samples including 1426 larvae and 1221 adult mosquitoes were collected from these places. Seven species of larva and eight species of adult mosquitoes under two genera were identified. The recorded genera for both larvae and adults were Culex (Cx.) and Anopheles (An.). The collected species for larvae were Cx. quinquefasciatus, Cx. epidesmus, Cx.tritaeniorhynchus, Cx. mimulus, Cx. sinensis, An. vagus and An. minimus. The collected species for adults were Cx. epidesmus, Cx. quinquefasciatus, Cx.tritaeniorhynchus, Cx. mimulus, Cx. sinensis, Cx. pallidothorax, An. vagus and An. minimus. Among the collected larva, Culex was found most prevalent (85.7%) than Anopheles (14.3%). Same as larva, adult Culex mosquitoes was found most prevalent (84.4%) than Anopheles (15.6%). Cx. quinquefasciatus (33.5%) found highest among the larval prevalence, in contrast, Cx. epidesmus (36.2%) was dominant among adults. On the other hand, An. vagus was the most dominant species in both larval and adult surveillance (8.1% and 9.9%, respectively). Both the larva and adult Culex mosquitoes were found more prevalent in households (20.3% and 41.2%, respectively), whereas density of Anopheles larva was found highest in rice fields (20.6%) and those of adults were concentrated in households (39.5%). The result of this study will help us to develop a sustainable control measures for the mosquitoes and mosquito-borne diseases in the study areas as well as other areas of the country. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 199-206
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68783
  Issue No: Vol. 10, No. 2 (2023)
Acute effects of malathion 57 EC pesticides on the histology, and blood
cell structure of Silver barb (Barbonymus gonionotus) in the South-west
region of Bangladesh
- Authors: Rabeya Akter, Redwan Amin , Fatema Jannat Raina
  Pages: 207 - 218
  Abstract: Pesticides used in agriculture that wash off have a detrimental effect on freshwater fish in Bangladesh. The purpose of this research is to assess the effects of the organophosphate insecticide Malathion 57 EC on the silver barb (Barbonymus gonionotus). The effects of Malathion 57 EC at dosages of 0.001 and 0.005 ppm, respectively, were assessed using a histological bio-assay of the gill, liver, kidney, and RBC count of B. gonionotus. For B. gonionotus, the LC50 value of Malathion 57 EC was estimated to be 0.08 ppm. The notable alterations included gill clubbing, missing gill lamellae, hyperplasia, nuclear hypertrophy, vacuolation, glomerular enlargement, increasing the width of renal tubules, bleeding, necrosis, and pyknosis were found in the histological analysis. Large lymphocytes, dead cells, tear-shaped cells, a fusion of cells, binucleated cells, ghost cells, senile cells, and irregular cell shapes were among the abnormalities detected in peripheral nuclear erythrocytes. In B. gonionotus, the RBC count was considerably lower (P<0.01) at lower pesticide doses compared to higher ones. The outcome of the study shows that the organophosphorus pesticide has a negative impact on the histology and haematology of various organs in B. gonionotus. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 207-218
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68784
  Issue No: Vol. 10, No. 2 (2023)
Determination of suitable species combination of two small indigenous fish
species (SIS) pabda (Ompok pabda) and gulsha (Mystus cavasius) with rohu
(Labeo rohita) in farmers’ pond
- Authors: Md Nahiduzzaman, Md Shahidul Islam, Shayla Sultana Mely, Md Moshiur Rahman, Md Robiul Awal , AHM Kohinoor
  Pages: 219 - 228
  Abstract: An experiment was carried out from May to September, 2018 to determine the suitable species combination of two indigenous fish Pabda (Ompok pabda) and Gulsha (Mystus cavasius) with Rohu in farmer’s pond. Three species combinations (% of total stocking densities) Gulsha: Pabda = 60: 40 at T1, 40: 60 at T2, and 50: 50 at T3 were tested. Stocking of Rohu were similar (2964/ha) for all the treatments. Similar stocking density (200564/ha) was maintained in all the treatments. The production obtained were 7138.30±63, 6977.75±78 and 7037.03±84 kg/ha from T1, T2 and T3 respectively. The highest production was obtained from T1 compared to other treatments. A straightforward economic analysis showed that treatment T1 (BCR -1.94, net profit: Tk.12,94,576/ha/6 months) had the highest benefit-cost ratio (BCR) and net profit, subsequent to treatment T3 (BCR -1.87, net profit: Tk.12,74,685/ha/6 months) and treatment T2 (BCR-1.93, net profit: Tk.12,02,956/ha/6 months). Therefore, it might be concluded that the species combination of pabda, gulsha and rohu followed by T1 may be a better option considering the production and economic benefits to farmer’s ponds in our country. Res. Agric. Livest. Fish. Vol. 10, No. 2, August 2023: 219-228
  PubDate: 2023-09-18
  DOI: 10.3329/ralf.v10i2.68785
  Issue No: Vol. 10, No. 2 (2023)