Bangladesh Journal of Agricultural Research 2019-05-22T13:09:01+00:00 Md. Hasan Hafizur Rahman Open Journal Systems The official journal of the Bangladesh Agricultural Research Unit (BARI). <br />Full text articles available. Physiological responses of mungbean (Vigna radiata) varieties to drought stress 2019-05-22T13:09:01+00:00 A Nazran JU Ahmed AJMS Karim TK Ghosh <p>A pot experiment under polyshed condition was carried out at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during the period from 27 March 2017 to 5 May 2017 to study the physiological responses of mungbean varieties to drought stress under varying water regimes. The treatments consisted of four mungbean varieties, namely BARI Mung-5, BARI Mung-6, BUmug 2, BUmug 4 and three water regimes viz., 50 to 60% field capacity (FC), 70 to 80% FC and 90 to100% FC which were considered as severe drought stress, moderate drought stress and non-stress, respectively. The experiment was laid out in a completely randomized design with factorial arrangement having four replications. Results indicated that BARI Mung-6 maintained significantly the highest relative water content, leaf water potential, proline content, shoot dry matter and lower rate of electrolyte leakage at 50 to 60% FC (severe drought stress). BUmug 2 showed the lowest performance in terms of all the water relation and physiological characters which indicates its higher sensitivity to severe drought stress. Variety BARI Mung-6 was relatively water stress tolerant than others in respect of physiological adaptations. So, BARI Mung-6 can be a potential variety for cultivation under drought condition where irrigation facility is limited.</p> <p>Bangladesh J. Agril. Res. 44(1): 1-11, March 2019</p> 2019-04-07T17:00:48+00:00 ##submission.copyrightStatement## Integrated nutrient management for growth, yield and profitability of broccoli 2019-05-22T13:09:00+00:00 E Kayesh MS Sharker MS Roni U Sarker <p>A field experiment on broccoli taking the hybrid variety ‘Green Magic’ was conducted with seven treatments [T<sub>1</sub> = 100% recommended dose of inorganic fertilizer(100-35-60-18-2-1.2 kg/ha of N-P-K-S-Zn-B+Cowdung (CD) @5 t/ha), T<sub>2</sub> = 50% inorganic fertilizer recommended dose + Mustard Oil Cake(MOC) @ 1.5 t/ha, T<sub>3</sub> = 50% inorganic fertilizer of recommended dose + CD @ 10 t/ha, T<sub>4</sub> = 50% inorganic fertilizer of recommended dose + Poultry Manure (PM) @ 6 t/ha, T<sub>5</sub> = 25% inorganic fertilizer of recommended dose + MOC @ 3 t/ha, T<sub>6</sub> = 25% inorganic fertilizer of recommended dose + CD @ 15 t/ha, T<sub>7</sub> = 25% inorganic fertilizer of recommended dose + PM @ 12 t/ha] at the Horticultural Research Farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur during the period from September 2015 to February 2016. The aim of the study was to standardize the organic manure and inorganic fertilizers of broccoli for proper growth and yield. The experiment was laid out in a Randomized Complete Block Deign with three replications. All the parameters studied were significantly influenced by different treatments. The maximum plant height (62.20 cm) and canopy spread (64.67 cm), maximum number of leaves/plant (30.23) and average size of leaves (738.1 cm<sup>2</sup>) and length of terminal head (15.57 cm) were found in T<sub>5</sub> which was statistically similar with T<sub>7</sub>. The diameter of stems (3.87 cm), terminal head diameter (16.17 cm), terminal head weight/plant (424.6 g), number of lateral heads/plant (4.86), weight of lateral heads/plant (155.5 g), yield/plot (11.60 kg/6m<sup>2</sup>), yield (19.34 t/ha) were found the highest in T7 which was statistically similar with T5. Gross return and net return were the highest in T<sub>7</sub>and benefit cost ratio (BCR) was also maximum (3.64) in T<sub>7</sub>.</p> <p>Bangladesh J. Agril. Res. 44(1): 13-26, March 2019</p> 2019-04-07T17:00:55+00:00 ##submission.copyrightStatement## Effect of plant growth regulators on plant regeneration of hyacinth bean (Lablab purpureus (L.) Sweet) through nodal explants 2019-05-22T13:08:58+00:00 MT Islam MS Haque S Rahman MR Molla ERJ Keller <p>Nodal explants of three accessions namely BD-101, BD-122 and BD-8001 of hyacinth bean (<em>Lablab purpureus </em>(L.) Sweet) were cultured for four weeks on MS medium supplemented with different concentrations and combinations of NAA (0, 0.1 mgl<sup>-1</sup>) and BAP (0.5, 1.0 and 2.5 mgl<sup>-1</sup>) for plant regeneration. The highest shoot initiation was observed in 0.5 mgl<sup>-1</sup> BAP while the lowest shoot initiation was found in 2.5 mgl<sup>-1</sup> BAP with 0.1 mgl<sup>-1</sup> NAA. Earlier shoot initiation was exhibited in 0.5 mgl<sup>-1</sup> BAP with 0.1 mgl<sup>-1</sup> NAA. The highest number of leaflets and higher shoot lengths were observed in MS medium. Comparatively higher number of shoots was found in BAP (0.5-2.5 mgl<sup>-1</sup>). The highest percentage of callus was initiated in medium supplemented with 1.0 mgl<sup>-1</sup> BAP. Earlier callus initiation and larger callus size were found in combination of BAP (0.5-2.5 mgl<sup>-1</sup>) with 0.1 mgl<sup>-1</sup> NAA. BD-122 cultured in MS medium was found superior for shoot regeneration through node culture. Four different concentrations of IBA (0.1-1.5 mgl<sup>-1</sup>) were used for rooting. The highest percentage (86.67 %) of rooting was found in MS medium containing 0.1 mgl<sup>-1</sup> IBA at four weeks. Rooting frequency decreased with the increasing concentration of IBA. The accession BD-8001 had 99.60 % rooting in 0.5 mgl<sup>-1</sup> IBA. The highest number of longest roots was exhibited in 0.1 mgl<sup>-1</sup> IBA. The regeneration protocol developed from nodal explants has applicability in improvement of hyacinth bean.</p> <p>Bangladesh J. Agril. Res. 44(1): 27-42, March 2019</p> 2019-04-07T17:01:02+00:00 ##submission.copyrightStatement## Economic analysis of turmeric cultivation: evidence from Khagrachari district 2019-05-22T13:08:57+00:00 MEA Begum MA Monayem Miah MA Rashid MT Islam MI Hossain <p>Turmeric is a good source of income for hilly people of Bangladesh. The study estimated the profitability and technical efficiency of turmeric cultivation in Khagrachhari district. In total 150 turmeric farms located in Khagrachari Sadar, Panchari and Matiranga Upazilas of Khagrachari district, were surveyed. Data were collected, using a pre-tested questionnaire during January, 2015. The study revealed that turmeric farming is a profitable farming with some dominating variable costs like seed (rhizome) and sowing, harvesting and carrying. As the net return was Tk. 112139 per hectare and the BCR of sampled farmers was 2.20, this indicates that turmeric farms with a BCR greater than 1 have greater benefits than costs as well as positive net benefits. Seed (rhizome) and fertilizer showed significant positive effects on the turmeric production in the stochastic frontier production model. Turmeric farming displayed a mean technical efficiency of 82%, which suggested a substantial 18% of potential output of turmeric can be recovered by removing inefficiency. Besides improving technical efficiency, potential also exists for raising turmeric production through higher education and extension services. For a land scarce country like Bangladesh this gain could help increase income and ensure better livelihood for the hilly farmers. The policy implication of the analysis is that investment in education and extension service would greatly improve technical efficiency that contribute to income of the hilly people.</p> <p>Bangladesh J. Agril. Res. 44(1): 43-58, March 2019</p> 2019-04-07T17:01:09+00:00 ##submission.copyrightStatement## Seed health of stored lentil collected from major lentil growing areas of Bangladesh 2019-05-22T13:08:55+00:00 JA Mahmud M Ahmed SK Adhikary <p>An experiment was conducted in the Plant Pathology Laboratory, Regional Agricultural Research Station, BARI, Jashore using 126 lentil seed samples collected from farmer’s store of different lentil growing areas of Bangladesh to determine physical status and fungal association with lentil seeds. The collected seeds contained different varieties and locations. The seeds were grouped into four grades according to physical status. Among the varieties the maximum apparently healthy seed i. e. grade-1 was found in BARI Masur-7 (90.92 %) and the minimum was in local (59.34 %) varieties. In respect of location the maximum grade-1 seed was recorded from Madaripur (90.75 %) and minimum in Kushtia (47.67 %) district. Germination percentage was the highest in BARI Masur-7 (94.00 %) and the lowest in BARI Masur-3 (75.42 %) variety. Among districts, the highest germination was found in seeds of Meherpur (89.83 %) and the lowest in Narail (62.97 %). A linear positive relation was found between percent germination and apparently healthy seed in case of both varieties and locations. Six fungal genera were associated with lentil seed samples <em>viz</em>. <em>Fusarium </em>sp., <em>Alternaria </em>sp., <em>Stemphylium </em>sp., <em>Curvularia </em>sp., <em>Penicillium </em>sp. and <em>Aspergillus </em>spp. <em>Aspergillus niger </em>caused highest infection (17.58 %) followed by <em>Fusarium oxysporum, Alternaria tennuis, Stemphylium botryosum, Curvularia lunata, Penecillium </em>sp., <em>Aspergillus flavus, Aspergillus paraciticus </em>and <em>Aspergillus candidus </em>and the lowest (4.67 %) by <em>Aspergillus ocraceous</em>. Average association of fungi was the highest in local variety (3.27 %) and it was the lowest in BARI Masur-7 (0.50 %).</p> <p>Bangladesh J. Agril. Res. 44(1): 59-68, March 2019</p> 2019-04-07T17:01:17+00:00 ##submission.copyrightStatement## Development of alternate cropping pattern Mustard -Boro –T.aman against fallow - Boro- T. Aman in Kushtia region 2019-05-22T13:08:53+00:00 MS Rahman MT Islam <p>The experiment was conducted at Kushtia Sadar, Bheramara and Gangni Multi Location Testing (MLT) sites under On-Farm Research Division (OFRD), BARI, Kushtia (AEZ 11) during the last week of July to second week of May for three consecutive years (2013- 14, 2014-15 and 2015-16) to develop alternate cropping pattern (Mustard-Boro -T.Aman) and to compare its productivity and profitability against farmer’s existing cropping pattern (Fallow - Boro-T.Aman). The mustard (var: BARI Sarisha-14), Boro rice (var: BRRI dhan28) and T.Aman (var: Binadhan-7) were used in alternate cropping pattern, while BRRI dhan28 for Boro rice and BRRI dhan39/Sorna for T.Aman rice were used in the existing cropping pattern. Findings revealed that the mean crop duration of alternate cropping pattern ranged 269-287 days by inclusion of mustard. Rice equvalent yield of alternate cropping pattern was 13.98 t ha<sup>-1</sup> year<sup>-1</sup> which was 34% higher than that of existing pattern (10.47 t ha<sup>-1</sup> year<sup>-1</sup>). Land use efficiency (76.44%) and labour employment (441 mandays ha<sup>-1</sup> year<sup>-1</sup>) of alternate cropping pattern were 33 and 26%, higher, respectively than those of existing cropping pattern. The mean gross return (Tk. 2,53,960 ha<sup>-1</sup>) and gross margin (Tk. 99,513/ha) of alternate cropping pattern were 29 and 32%, respectively higher compared to those of existing cropping pattern (Gross return: Tk. 1,97,346 ha<sup>-1</sup> and Gross margin: Tk. 75,340 ha<sup>-1</sup>) due to inclusion of high yielding variety of mustard. Therefore, farmers in Kushtia region of Bangladesh could follow alternate cropping pattern in their high and medium high land where lands remain fallow after harvesting of T. Aman rice for higher crop productivity and profitability.</p> <p>Bangladesh J. Agril. Res. 44(1): 69-78, March 2019</p> 2019-04-10T07:57:13+00:00 ##submission.copyrightStatement## Population abundance of leaf-eating caterpillars of cabbage 2019-05-22T13:08:52+00:00 MS Sultana MF Khatun SN Alam MRU Miah <p>This study was conducted in the experimental field of Entomology Division, Bangladesh Agricultural Research Institute (BARI), Gazipur during October 2014 to April 2015 to know the population abundance of leaf-eating caterpillars, namely prodania caterpillar, <em>Spodoptera litura </em>and diamondback moth (DBM), <em>Plutella xylostella </em>attacking cabbage in Bangladesh. The lowest population of both DBM and prodania larvae per plant was found during November and January whereas the highest population per plant was recorded during September and March 2014 and 2015, respectively. The same trend were observed in case of the adult population in the sex pheromone trap catch. The adult prodania caterpillar population was the highest during October-November and March. During December population declined totally in the month of January. The highest diamondback moth (<em>Plutella xylostella</em>) population was observed during November and March. During the last week of December population again declined entirely which continued until the last week of January. <em>S. litura </em>population was always higher than that of diamondback moth (DBM). There is a positive correlation between the rise of temperature with the population buildup of both <em>S. litura </em>and <em>P. xylostella </em>in cabbage. Especially when the mean temperature declined below 15˚C then the population of both the pest became nil.</p> <p>Bangladesh J. Agril. Res. 44(1): 79-87, March 2019</p> 2019-04-10T07:58:56+00:00 ##submission.copyrightStatement## Residual behaviour of imidacloprid in the country bean growing soil 2019-05-22T13:08:50+00:00 H Rahman T Akter HK Mishu RU Miah MS Alam <p>The assessment of residual behavior of imidacloprid (Admire 20SL) in the soil of country bean agroecosystem and its risk assessment for consumption was studied. QuEChERS method was used for the extraction and clean-up of samples and the residues of imidacloprid was estimated using Gas Chromatography. The dissipation studies in the soil system were carried out by application of imidacloprid at five different dosages i.e. 100, 200, 300, 400, and 500 g a.i. ha<sup>-1</sup>. Average initial deposits of imidacloprid were found to be 0.99, 1.33, 1.62, 1.83 and 2.20<sup>-1</sup>. The residues reached below determination limit (BDL) of 0.01 mg kg<sup>-1</sup> in 9 days for recommended dose and 12 days for remaining higher dosages. Half-life (T<em><sub>1/2</sub></em>)) of imidacloprid in the soil was observed to be 1.88, 1.74, 1.73, 1.56 and 1.52 days for 100, 200, 300, 400, and 500 g a.i. ha<sup>-1</sup>, respectively. The chemodynamics study of imidacloprid spray indicated that only 27.20 -28.40% sprays were deposited to the target site (plant canopy) and 71.60-72.80% were lost to non-target site such as soil and air. The drift of imidacloprid to soil (39.47-40.20%) was higher than the air (32.13-32.60%). Based on degradation pattern and maximum, the recommended preharvest interval (PHI) might be eight 9 days and a waiting period of two days might be suggested for reapplication of the imidacloprid in country bean agroecosystem.</p> <p>Bangladesh J. Agril. Res. 44(1): 89-101, March 2019</p> 2019-04-10T07:59:04+00:00 ##submission.copyrightStatement## Role of insect pollinators and pests on the yield and seed quality of eggplant (Solanum melongena L.) 2019-04-10T09:00:47+00:00 MR Amin MS Miah H Rahman NP Nancy MKA Bhuiyan <p>The research work was conducted in the experimental field of the Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur to identify the insect pollinators abundant in eggplant field, and to know the effect of insect pollinators and pests on the yield and seed quality of the crop. Eggplants were cultivated in three conditions viz., open, enclosed in net without supplemented insect pollination, and enclosed in net with supplemented insect pollination. In total 8 species of insects belonged to 6 families in 3 orders were found as pollinator on eggplant and their abundance varied from 0.6±0.1 to 1.6±0.3 /30 sweeps. Among the pollinator insects, ant showed the highest abundance and longest foraging duration per flower. The plant infestation among the treatments varied from 2.6±2.6 to 12.8±1.6% and the highest and the lowest levels were observed in open condition and enclosed condition respectively. The fruit infestation ranged from 11.3±1.6 to 43.7±3.0% and the highest infestation was observed in open condition. Insect pollination produced the higher number of fruits per plant (14.4±0.4/plant) as well as larger fruits (length: 27.6±0.7 cm and breadth: 11.6±0.2 cm), and thus produced higher yield (11.6±0.4 tha<sup>-1</sup>) and higher germination (82.0± 2.5%) of seeds.</p> <p>Bangladesh J. Agril. Res. 44(1): 103-113, March 2019</p> 2019-04-10T07:59:34+00:00 ##submission.copyrightStatement## Profitability analysis of papaya cultivation in some selected areas of Bangladesh 2019-05-22T13:08:46+00:00 MI Kaysar MS Hoq MW Islam MS Islam MT Islam <p>The study was conducted to depict the overall economics of papaya cultivation in four districts namely Tangail, Jashore, Bandarban and Rajshahi. The objectives of the study were to examine the cost structure, resource use productivities, profitability and the problems of papaya production. A total of 152 farmers taking 38 from each district were selected randomly. Data were collected through a pre-tested interview schedule during January-March, 2017. The per hectare use of human labour, plant protection, manures and fertilizer were found to be maximum at Jashore whereas, the per hectare use of saplings was found to be maximum at Tangail district. The per hectare cost of cultivation of papaya was high at Jossere (365405) followed by Tangail (Tk.334261), Rajshahi (Tk.319754), and Bandarban (Tk. 272664). The average per hectare yield were maximum at Jossere (62MT) followed by Rajshahi (55MT), Tangail (54MT) and Bandarban (52MT). Per hectare gross margin was the highest at Tangail (Tk. 802797) followed by Bandarban (Tk. 658441), Jashore (Tk. 536346) and Rajshahi (Tk.471298). Per hectare net return was highest at Tangail (Tk.633738) followed by Bandarban (Tk.507335), Jossere (Tk.346594) and Rajshahi (Tk.302747). The overall benefit cost ratio was 2.39 which indicates papaya cultivation was profitable in Bangladesh. The yield of papaya would increase by 0.0407, 0.125, 00.0627, 0.0863 and 0.3785 % if papaya farmers apply 1% additional human labour, seedlings/saplings, fertilizer, improved variety, and dummy for loamy soil. Attacks on viral disease, adverse weather condition, non-availability of reliable seed, lack of irrigation facilities, lack of technical knowledge and problems in marketing of papaya were the major constraints of papaya cultivation in the study areas.</p> <p>Bangladesh J. Agril. Res. 44(1): 115-126, March 2019</p> 2019-04-10T08:22:37+00:00 ##submission.copyrightStatement## Efficacy of different substrates to formulate Trichoderma harzianum against seedling disease of cabbage 2019-05-22T13:08:48+00:00 MI Faruk <p>Efficacy of three different substrates viz. rice bran, wheat bran, grass pea bran and their combination along with or without Mustard oilcake (MOC) were tested to formulate <em>Trichoderma harzianum </em>based bio-fungicides for the management of seedling disease (<em>Fusarium oxysporum</em>) of cabbage in seedbed. All combinations of substrates were equally suitable for mass culturing and preparing of <em>T. harzianum </em>bio-fungicides and all the substrates based <em>T. harzianum </em>bio-fungicides were effective in increasing seedling emergence and reducing pre-emergence and post-emergence mortality of cabbage seedling under <em>F. oxysporum </em>inoculated seedbed soils. The shoot length, shoot weight, root length and root weight of cabbage seedling were enhanced significantly by the application of different substrates based <em>T. harzianum </em>bio-fungicides under <em>F. oxysporum </em>inoculated soil under seedbed conditions. The individual (rice bran, wheat bran, grasspea bran) and combination of substrates (rice bran + wheat bran, rice bran + grasspea bran, rice bran + Mustard oilcake, rice bran + wheat bran + MOC and wheat bran + grass pea bran + MOC) were equally suitable to formulate effective <em>T. harzianum </em>based bio-fungicides for the management of foot and root rot disease of cabbage seedling in seed bed condition.</p> <p>Bangladesh J. Agril. Res. 44(1): 127-138, March 2019</p> 2019-04-10T08:22:29+00:00 ##submission.copyrightStatement## Profitability analysis of mango cultivation and its impact on farmer’s livelihood in some areas of Bangladesh 2019-05-22T13:08:45+00:00 MS Rahman M Khatun MA Monayem Miah <p>The study was carried out to investigate profitability of mango farming and to assess the impact of BARI Aam-3 mango variety production on the farmer’s livelihood in four mango growing districts namely Khagrachori, Bandorban, Naogaon, and Satkhira of Bangladesh during February to March, 2018. A total of 128 BARI Aam-3 growers were selected using multi-stage random sampling technique. Descriptive statistics and financial profitability analysis was used to analyze data. The net return for one hectare of mango orchard was Tk. 730233 for 6-7 years of BARI Aam-3 mango orchard. Net present value was estimated to Tk. 444397 for BARI Aam-3 which indicates that mango cultivation fetches higher returns. The estimated benefit cost ratio was 2.01 for BARI Aam-3 which ensures that investment in BARI Aam-3 is feasible for the mango farmers. The BARI Aam-3 mango cultivation was also found to be a profitable enterprise since internal rate of return was very high (83.075%). The results also reveal that human capital increased by 54.34%, 68% and 60.54%; physical capital increased by 48.17%, 58% and 50% as well as social capital increased by 28.50%, 43% and 45.95% of the small, medium and large farmers respectively due to cultivation of BARI Aam-3 mango variety. Therefore, it is highly recommended to spread the information of BARI Aam-3 cultivation as a profitable enterprise among the mango growers throughout the country.</p> <p>Bangladesh J. Agril. Res. 44(1): 139-152, March 2019</p> 2019-04-10T08:36:19+00:00 ##submission.copyrightStatement## Effects of arbuscular mycorrhizal fungi, rhizobium and phosphorus on mungbean (Vigna radiata) in saline soil 2019-05-22T13:08:43+00:00 M Rahman MA Hossain ME Ali MFA Anik F Alam <p>A pot experiment was carried out in the nethouse of Soil Science Division of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur in 2017 and 2018 with an objective to evaluate the potentiality of AM fungi, <em>Rhizobium </em>and P in different best combinations on germination (%), growth, yield and yield contributing characters, nodulation, sporulation and nutrient concentration of mungbean under low salinity (4 dSm<sup>-1</sup>) stress condition. The experiment was designed in CRD with 10 treatments and 4 replications. Mungbean variety BARI Mung-6 was used as a test crop. Peat based rhizobial inoculum (BARI RVr-403) was used in this experiment @ 50 g kg<sup>-1</sup> seed and the population density of inoculum being above 108 cfu g<sup>-1</sup> inoculant. Soil based AM inoculum containing 275 ± 20 spores and infected root pieces of the host plant was used in each pot. There were 10 treatments viz. T<sub>1</sub>: Control (Not absolute control), T<sub>2</sub>: Arbuscular mycorrhiza (AM) + 50% P, T<sub>3</sub>: AM + 75% P, T<sub>4</sub>: AM + 100% P, T<sub>5</sub>: <em>Rhizobium </em>+ 50% P, T<sub>6</sub>: <em>Rhizobium </em>+ 75% P, T<sub>7</sub>: <em>Rhizobium </em>+ 100% P, T<sub>8</sub>: AM + <em>Rhizobium </em>+ 50% P, T<sub>9</sub>: AM + <em>Rhizobium </em>+ 75% P and T<sub>10</sub>: AM + <em>Rhizobium </em>+ 100% P. The highest seed yield (2.28 g plant<sup>-1</sup>, 46.2% higher over control in 2017 and 2.97 g plant<sup>-1</sup>, 33.8% higher over control in 2018) and stover yield (5.23 g plant<sup>-1</sup>, 30.8% higher over control in 2017 and 5.67 g plant<sup>-1</sup>, 32.8% higher over control in 2018) were found in AM + <em>Rhizobium </em>+ 75% P treatment. Dual inoculation significantly increased P, S, Mg, Fe, Mn and Zn concentration of mungbean plant compared to control. The results suggest that inoculation of AM fungi and <em>Rhizobium </em>along with 75% of recommended P rate can help increased mungbean yield under low salinity stress condition through influence on nodulation, colonization and nutrient uptake.</p> <p>Bangladesh J. Agril. Res. 44(1): 153-165, March 2019</p> 2019-04-10T08:48:07+00:00 ##submission.copyrightStatement## Evaluation of jackfruit germplasm for yield and yield contributing characters 2019-05-22T13:08:41+00:00 MZ Rahman MR Karim MA Haque MJ Rahman <p>Twenty germplasm of jackfruit grown in the Fruit Research Farm of Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI) were evaluated for growth, yield and yield parameter along with qualitative characters from July 2012 to June 2015. All the germplasm varied for most of the parameters evaluated. The tallest plant was recorded in AH Joy-079(6.75m) and shortest plant in AH Joy-075 (3.50 m) among the germplasm. Base girth ranged from 42.50 cm to 80.20 cm in AH Joy-075 and AH Joy-085, respectively. Maximum plant spreading with North-South and East-West canopy (5.50 m and 6.00 m, respectively) was recorded in AH Joy-079 and minimum (3.00 m and 3.50m) in both AH Joy-075 and AH Joy-090 germplasm. The fruit number varied from 02 to 11 among the germplasm. Individual fruit weight ranged from 2.27 kg to 11.33 kg where AH Joy-034 had the lowest and AH Joy-092 noted the highest fruit weight. Maximum bulb (184) was recorded in AH Joy-092 and minimum (45) in AH Joy-085. Maximum TSS (25.0) was recorded in AH Joy-029 and minimum (14.0) in AH Joy-067 and the edible portion was noted the highest in AH Joy-036 (48.60%) where it was lowest in AH Joy-078 (32.10%). Bulb texture was soft to hard. Maximum germplasm were juicy to medium juicy having yellow to light yellowPulp. Therefore, The germplasm AH Joy-089, AH Joy-017 and AH Joy-092 may be selected for higher yielder. The germplasm AH Joy-034,AH Joy-067, AH Joy-078,AH Joy-085 and AH Joy-098 should be selected for family size jackfruit as their individual fruit weight ranges between 2 to 4 kg including yellow bulb colourcontaining good juiciness and soft bulb texture.</p> <p>Bangladesh J. Agril. Res. 44(1): 167-177, March 2019</p> 2019-04-10T08:48:14+00:00 ##submission.copyrightStatement## Effect of harvesting dates on the yield and tuber quality of processing potatoes 2019-05-22T13:08:40+00:00 M Sharkar JU Ahmed SF Ahmed SMZ Al Meraj M. Mohi Ud Din <p>An experiment was conducted to study the effect of harvesting dates and variety on the yield and processing quality of potato tuber. Three processing potato varieties (BARI Alu-25, Asterix; BARI Alu-28, Lady Rosetta and BARI Alu-29, Courage) were used as test crops and they were harvested at different days after planting [80, 90, and 100 days after planting (DAP)]. The three processing potato varieties showed higher tuber yield of Grade A (9.12 t ha<sup>-1</sup>) and B (13.64 t ha-1). The highest tuber yield (Grade A+B) [29.62 t ha<sup>-1</sup>] and total tuber yield (35.97 t ha<sup>-1</sup>) was found in Courage at 90 and 100 DAP harvest, respectively. The variety Lady Rosetta attained the highest percent of processable tuber yield (86.8% of the total tuber yield), the maximum dry matter content (26.37%), specific gravity (1.102) at 90 DAP harvest and this variety also contained the highest mean starch content (111.75 mg g<sup>-1</sup> FW) followed by Courage (111.17 mg g-1 FW) and Asterix (103.95 mg g<sup>-1</sup> FW). Optimum dry matter content (24.07%), specific gravity (1.091), starch content (110.15 mg g<sup>-1</sup> FW), processable tuber yield (26.62 t ha<sup>-1</sup>) and total tuber yield (32.76 t ha<sup>-1</sup>) was found at 90 DAP harvest and therefore, it could be mentioned as suitable harvesting date for processing purposes. Among the varieties, Lady Rosetta and Courage were found preferable potato varieties that could be used for processing of potato products.</p> <p>Bangladesh J. Agril. Res. 44(1): 179-193, March 2019</p> 2019-04-10T08:58:47+00:00 ##submission.copyrightStatement##