Tista Meander Floodplain Research Articles

Response of Nitrogen Levels on the Growth, Yield and Quality of High Yielding Potato Varieties in Tista Meander Floodplain Soil of Bangladesh

Response of Nitrogen Levels on the Growth, Yield and Quality of High Yielding Potato Varieties in Tista Meander Floodplain Soil of Bangladesh

Effect of Foliar Application of Boron on the Yield And Quality of Potato

Foliar application of boron on the yield and storability of potato was evaluated at Breeder Seed Production Centre, Debiganj during two consecutive years 2013-14 and 2014-15. Six different concentration of boron such as: 0 ppm B (T1), 70 ppm B (T2), 140 ppm B (T3), 210 ppm B (T4), 280 ppm B (T5) and 350 ppm B (T6) were tested. The maximum yield 35.9 and 35.3 t ha-1 in 2013-14 and 2014-15, respectively was found when plants treated with 210 ppm B as foliar application (T4). The highest dry matter content of tuber was obtained from T4. T4 (210 ppm B) also showed the minimum rottage loss of tuber. The highest gross margin and marginal benefit cost ratio were recorded in the same treatment. Foliar application of 210 ppm B can be recommended for economically potato production in Tista Meander Floodplain Soil.
 Bangladesh J. Agril. Res. 45(2): 125-135, June 2020

Improved management practices vis-à-vis farmers’ practices for rice-based cropping systems in Bangladesh: yield gaps and gross margins

ABSTRACT Rising global food demand attributable to ever-increasing population and income growth requires a substantial increase in food production, but there are limits to yield growth. Therefore, this study was carried out to assess potential yield, yield gap, and gross margins under improved management practices (IMP) and farmers’ practices (FP) in potato (Solanum tuberosum L.)-boro rice (Oryza sativa L.), and transplant aman rice-cropping patterns. The two representative subdistricts selected in Bangladesh were Mithapukur (Rangpur district) and Ulipur (Kurigram district), which are located in Tista Meander Floodplain Agroecological Zone. Fifteen farmers were selected from each location. Each farmer cultivated an area of 1,200 m2 and divided it into two plots – one received IMP, the other FP. Management practices included the use of modern varieties, fertilizers, pesticides, and irrigation. The study findings revealed that IMP provided higher yields than FP at both locations for all three crops. The yield gap between IMP and FP was 42–60% at Mithapukur and 45–51% at Ulipur for potato, 23–28% and 19–21% at Mithapukur and Ulipur, respectively, for boro rice, and 16–23% at Mithapukur and 20–26% at Ulipur for transplant aman rice. The findings showed that IMP provided substantially higher yields across crops and study locations. Gross margins of the crops under IMP were higher compared with FP at both locations. Therefore, greater yield can be obtained by following the IMP. To materialize this, regular and close collaboration between research and extension wings of the government and farmers is extremely essential.

MICRONUTRIENT STATUS OF TISTA MEANDER FLOODPLAIN SOILS UNDER MAJOR CROPPING PATTERNS IN MITHAPUKUR UPAZILA

Soil micronutrients from their finite source are strongly affected by the inclusion of high-yielding crop cultivars in the cropping patterns and their fertilization practices. A study was conducted to identify the dominant cropping patterns and to evaluate their impacts on soil micronutrients’ (Zn, B, Cu, Fe, Mn) status in Tista Meander Floodplain Soils at Mithapukur upazila of Rangpur district, Bangladesh. The study revealed that potato-rice-rice (P-R-R) (18.26%), rice-fallow-rice (R-F-R) (15.65%), and maize-fallow-rice (M-F-R) (13.91%) were the most prevalent among the existing cropping patterns. Zn and B fertilizers are used by 35% and 23% of farmers. The concentrations of Zn, B, and Mn increased while Cu and Fe decreased under all dominant patterns. The highest accumulation of Zn by 281.63%, B by 139.36%, and Mn by 83.13% were obtained under P-R-R while, the highest depletion of Cu by 52.58% and Fe by 24.48% were obtained under P-R-R and M-F-R cropping patterns, respectively. An increasing trend of soil toxicity index (STI) values was observed with Zn, B, and Mn. A deleterious shift of B from lower to higher STI class was obtained under the P-R-R and R-F-R patterns while an ameliorating shift of Cu from higher to lower class was obtained under P-R-R and M-F-R patterns. The recent STI status of Fe and Mn under all cropping patterns rendered in the ‘highly toxic’ class. This investigation emphasizes that the concentrations of selected micronutrients were found above their respective critical limits and that the studied micronutrients except Zn imposed toxicity in the soil.

Effect of Sulphur on the Yield and Quality of Potato Varieties in Tista Meander Floodplain Soil of Bangladesh

A field experiment was carried out at Breeder seed Production Centre (BSPC), Debiganj, Panchagarh during the Rabi season of 2016-2017 to study the effect of five levels of sulphur application on yield and quality attributes of three potato varieties. The main objective of the experiment was to determine the effect of sulphur on the yield and quality of potato varieties. There were five treatments comprising different levels of sulphur such as T1 (control-no sulphur), T2 (75% RDS), T3 (100% RDS), T4 (125% RDS) and T5 (150% RDS). Three BARI released potato variety; BARI Alu 36 (4.26 R), BARI Alu 40 (4.45W) and BARI Alu 25 (Asterix) were used in this experiment. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The tuber yield and yield contributing characters were significantly influenced by the application of sulphur. Maximum tuber yield (39.28 t/ha) was recorded in BARI Alu 40 (4.45 w). Highest dry matter content, specific gravity and starch content were found in BARI Alu 40 (4.45 w), which was followed by BARI Alu 36 (4.26 R) in case of specific gravity and starch content. Sulphur application in potato varieties showed significant influence on tuber yield of potato. This parameter increased with increasing dose of sulphur up to 100% RDS. Thereafter, further increase in sulphur did not showed any remarkable influence. Besides, sulphur application in potato varieties showed significant influence on tuber quality of potato. The maximum dry matter yield and starch yield were recorded in the treatment T3, which was followed by all other treatments except T1. The minimum dry matter yield and starch yield were recorded in the treatment T1. Combined effect showed insignificant influences between varieties and sulphur levels. BARI Alu 40 (4.45 w) was found superior over other varieties in terms of yield and quality attributes. Treatment T3 (100% RDS) was found superior over other treatments in terms of yield.

Effects of boron application on new wheat varieties in Bangladesh

A pot experiment was conducted in the Net house of Soil Science Division of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur during rabi season, 2017-2018 in Tista Meander Floodplain Soils (AEZ-3). The objectives were to evaluate the effect of boron on the yield of wheat, estimate boron use efficiency and to find out suitable variety for maximizing the yield. The experiment was designed in Completely Randomized Design (CRD) with three replications. Three varieties of wheat (BARI Gom-28, BARI Gom-29 and BARI Gom-30) with 5 levels of boron (0, 0.5, 1.0, 1.5 and 2 kg ha-1) along with a blanket dose N120P30K90S15Zn3Mg6 kg ha-1 were used in the study. All the three varieties performed well with application of 1.5 kg B ha-1 as compared to the other B treatments. However, the highest yield (39.2 g pot-1) was obtained with BARI Gom-30 variety receiving B at 1.5 kg ha-1.
 Bangladesh J. Agril. Res. 44(2): 303-310, June 2019

Cropping pattern based micronutrient application for wheat-mungbean-T. aman crop sequence under Tista Meander Floodplain soil at Rangpur

Intensification of agricultural land use coupled with cultivation of modern varieties has remarkably increased in Bangladesh. This in turn has resulted in deterioration of soil fertility, with emergence of macro- and micro-nutrient deficiency of crops. With this point in view, a study was undertaken to evaluate the effect of different micronutrients on crop yield, and to determine the requirement of selected micronutrients for crops and cropping patterns in the Tista Meander Floodplain (AEZ 3). Experiments were conducted at BINA substation and farmers’ fields of Rangpur district within AEZ 3. In experiment 1, the field trials were done with six micronutrients (B, Zn, Cu, Mn, Fe & Mo) designed in an additive manner. These elements were imposed to the first crop and their residual effects were monitored on the next two crops over the patterns: wheat-mungbean-T. aman. The rates of micronutrient application were 3 kg Zn, 2 kg B, 2 kg Cu, 3 kg Mn, 5 kg Fe and 1 kg Mo per hectare, added as fertilizers such as ZnSO4.7H2O, H3BO3, CuSO4.5H2O, MnCl2, FeSO4.7H2O and Na2MoO4, respectively. Other nutrients viz. N, P, K & S were applied at recommended rates to all plots; rationale was followed for the second and third crops. Intercultural operations were done whenever required. The results revealed that across the experimental sites, the crops were quite responsive to the added Zn and B. Positive effect of Cu was also noted in some cases. In the following year (expt. 2), two micronutrients, Zn and B were taken into the same cropping pattern and designed in a way to determine whether 1stcrop, 2ndcrop or 3rdcrop application is necessary to achieve satisfactory crop yield. The rates of Zn application were 0, 2, 4 & 6 kg ha–1, and the rates for B were 0, 1.5 and 3 kg ha–1. The results show that Zn application at 4 kg ha–1 coupled with B application at 1.5 kg ha–1 to the first crop can meet their requirement for the subsequent two crops in a pattern. The present study suggests that cropping pattern based field trials with Zn, B and Cu need to be done at farm level in the high cropping intensity areas of this country in order to determine micronutrient requirement of cropsJ. Bangladesh Agril. Univ. 15(2): 140-147, December 2017

Performance of different Gladiolus varieties under the climatic condition of Tista Meander Floodplain in Bangladesh

An experiment was conducted to evaluate 4 cultivars of Gladiolus BARI Gladiolus 1, BARI Gladiolus 3, BARI Gladiolus 4 and BARI Gladiolus 5at experimental farm, On Farm Research Division, Bangladesh Agricultural Research Institute (BARI), Alamnagar, Rangpur during 2015-2016 and 2016-2017. The aim of study was to evaluate the adaptability and performance of cultivar under the climatic conditions of Tista Mendar Floodplain Agro Ecological Zone in Bangladesh. Among the varieties BARI Gladiolus-5 performed excellent in terms of spike production in 2015-2016 and BARI Gladiolus-4 performed excellent in terms of spike production in 2016-2017. Among the varieties BARI Gladiolus-4performed excellent in terms of market value in both the years. Maximum spike length was observed in cultivars BARI Gladiolus-4 and BARI Gladiolus-5 remain attractive for longer time. Keeping in view the vegetative and reproductive characteristic cultivars BARI Gladiolus-4 was performed better and recommended for general cultivation. In 2015-2016 the highest gross return (BDT. 1383800 ha-1) as well as gross margin (BDT. 1005144 ha-1) was recorded in BARI Gladiolus-4. In 2016-2017 the highest gross return (BDT. 1318553ha-1) as well as gross margin (BDT. 927153 ha-1) was recorded in BARI Gladiolus-5.The lowest gross return as well as gross margin was obtained from yield BARI Gladiolus-1 in both the yearsTherefore, it could berecommended for commercial cultivation of gladiolusBARI gladiolus 4 and BARI gladiolus 5varietiesare best for Tista Meander Floodplain Agro-Ecological Zone in Bangladesh.Progressive Agriculture 28 (3): 198-203, 2017

Rice straw as a source of potassium for wetland rice cultivation

Rice crops uptake large amounts of potassium (K), which is mainly supplied from inorganic fertilizer. Alternate K sources are essential to preserve natural reserves and to recycle unused K containing stubbles. We have evaluated the performance of rice straw (RS) in farmers’ field following integrated plant nutrient system (IPNS) for supplementing K requirement of rice and compared with agro-ecological zone (AEZ)-based chemical fertilizer and farmers’ practice in Tista Meander Floodplain soils of Bangladesh during 2013–2015. Application of RS @ 4.5 t ha−1 + IPNS-based fertilizer replaced full dose of chemical K fertilizer without significant reduction in grain yield of Boro rice. The K uptake with RS incorporation was similar to AEZ-based chemical fertilizer use. Considering soil health and environmental issue, RS + IPNS-based fertilizer management was the best option for growing wetland rice.

Development of home garden model for year round production and consumption for improving resource-poor household food security in Bangladesh

The government of Bangladesh has long been striving to increase food security and to reduce poverty and malnutrition. In this regard, home gardens can play an important role in providing enhanced food supply and increased diversity of food to some extent. Studies on niche/ecosystem based homestead gardening were carried out at Lahirirhat Farming Systems Research and Development site, Rangpur under the On-Farm Research Division of Bangladesh Agricultural Research Institute during 2008–2009, resulting in the development of a year round production model, known as the Rangpur (Syedpur) model, for Tista Meander Floodplain agro-ecological region of Bangladesh. The objective of the study was to utilize the homestead resources in scientific ways for producing fresh vegetables and fruits over space and time and to enhance the nutritional supplies for the family throughout the year. A total of 12 households were selected from landless (no cultivable land), marginal (0.2–0.6ha) and small (0.61–1.0ha) farmer groups and seven production niches were intervened for round the year production following the Rangpur model. The niches were open sunny place, roof top, trellis, fence, boundary, marshy land and partially shady place. After the intervention, the highest amount of vegetables was produced by the small farmer groups (511kg/year) followed by marginal (499kg/year) and landless (422kg/year) farmers. The yearly vegetable requirements of farmers were largely met by the homestead garden with a supply between 55 and 79kg/head/year compared with the bench mark level of 21–30kg/head/year before the intervention. The highest total income (BDT 5030/year) and net income (BDT 4290/year) were obtained from homestead at small farmers followed by marginal and landless farmers. From this study it is evident that the target farmers were able to fulfill their daily requirement of vegetables in most parts of the year by following the Rangpur model. This suggests an increase in food security and a reduction in malnutrition of farm families in the target households of Rangpur region in Bangladesh. The upscaling of the production model based on niche/ecosystem in different poverty stricken regions of Bangladesh is recommended to achieve food security and malnutrition reduction.

Study on Profitability Using Modern Inputs against Traditional for Potato Production at Different Agro-Ecological Zones of Bangladesh

The study on Economics Faculty in using modern inputs against traditional inputs and practices for potato production were conducted in the different agro-ecological zones and agro-climatic locations of Bangladesh during 2011-2012. The aim of the study was how to enrich the knowledge of farmers and traders by the use of modern inputs (fertilizers, green pesticides and micronutrients) for potato production and management technologies. A total number of 150 farmers were randomly selected from Rangpur, Thakurgaon, and Comilla regions under agro-ecological zones of Tista Meander Floodplain, Old Himalayan Piedmont Plain and Middle Meghna River Floodplain respectively. Cobb-Douglas production function was used to measure the effect of various factors on potato production. The factors of production considered in this study were land preparation, labor cost, seed, fertilizer, pesticides, irrigation and land use cost. The cost was comparatively low in modern practices than higher in traditional practices as it was mainly due to adoption of recommended technology, appropriate dose and time in case of modern inputs and practices whereas non-recommended technology, higher dose of inputs adopted in traditional practices. The out-put in-terms of per unit yield was found 26 t ha-1 in modern practices but 24 t ha-1 in traditional practices. The net profit was significantly higher in modern practices than traditional practices; the net profit in modern practices was found at Rangpur Tk 98,079, Thakurgaon Tk 72, 741 and Comilla Tk 46, 950. It transpires from the study that the farmers would be economically benefitted if they use modern inputs; adopt technologies and practices in terms of using quality seed of improved varieties at recommended dose and time of use of fertilizers and pesticides, timely application of irrigation and appropriate crop management including weeding and other practices.J. Environ. Sci. & Natural Resources, 8(2): 83-87 2015

Effect of Fertilizers on the Yield and Nutrient Uptake by Transplanted Aman Rice (Binadhan-7) Grown in Two Soils of North-West Bangladesh

Four field experiments were carried out with Binadhan 7 at Birgonj, Dinajpur; Debigonj, Panchagarh; Kaligonj, Lalmonirhat and Pirgonj, Rangpur during T.aman (kharif II) season of 2011 in the Old Himalalayan Piedmont Plain (AEZ 1) and Tista Meander Floodplain Soils of North-West Bangladesh. The experiments were designed with eight treatments and laid out in randomized complete block design (RCBD) with three replications. The treatment combinations were: T1 (100%STB), T2 (T1 + 25% N), T3 (T1 + 25% NP), T4 (T1 + 25% NK), T5 (T1 + 25% PK), T6 (T1 + 25% NPK), T7 (75% of T1) and T8 (Control). Results indicated that application of different fertilizers significantly affected the grain yield at all of the four locations. The highest grain yield was found in treatment T6 (T1 + 25% NPK). Statistically identical yield was observed in treatments T3, T4 and T5 at Dinajpur; T3 at Panchagar; T2, T3, and T4 at Lalmonirhat and T2 at Rangpur. All the treatment combinations gave significantly higher grain yield over the control at all of the locations. The highest straw yield was found in treatment T6 (T1 + 25% NPK). Statistically identical straw yield was found in T3 and T4 at Dinajpur; T1, T4 and T5 at Panchagar; T2, T4, T5 and T7 Lalmonirhat and all treatments except T7 and T8 at Rangpur. Significantly the lowest yield was obtained in the control treatment (T8) in all of the locations. The highest total N uptake was observed in treatment T6 at all of the four locations. For total P uptake, the similar trend of total N uptake was observed for all the locations. Treatment T6 showed the highest uptake of total K at all locations. The highest uptake of total S was observed in treatment T6 at Dinajpur, Panchagarh and Lalmonirhat. But the highest uptake of total S was observed in treatment T3 at Rangpur. However, the lowest total N, P, K and S uptake was observed in control treatment (T8) at all locations. The partial budget analysis of T.aman rice demonstrated the highest net benefit of tkha-1 85,598/-, 78,619/-, 58,308/- and 72,532/- in T6 treatment followed by tkha-1 76,348/- in T4 treatment, 71,100/- in T3 treatment, 54,192/- in T3 treatment and 68,247/- in T2 treatment where the highest MBCR of 5.40, 3.75, 2.20 and 3.84 was also observed in T6 treatment at Dinajpur, Panchagarh, Lalmonirhat and Rangpur, respectively. Based on most profitable treatments, fertilizer doses of N80P8K40S8Zn1 in Birgonj, Dinajpur; N84P8K40S6Zn1 in Debigonj, Panchagarh; N80P8K40S6Zn1 in Kaligonj, Lalmonirhat and N81P8K35S8Zn1 in Pirgonj, Rangpur could be recommended for higher yield of Binadhan-7 rice in North-West Bangladesh.DOI: http://dx.doi.org/10.3329/jesnr.v6i2.22106 J. Environ. Sci. & Natural Resources, 6(2): 115-120 2013

Assessment of soil carbon stock of some selected agroecological zones of Bangladesh

The present investigation assessed the soil organic carbon (SOC) stocks of four AEZs in Bangladesh which included AEZ 1 (Old Himalayan Piedmont Plain), AEZ 3 (Tista Meander Floodplain), AEZ 4 (Karatoya-Bangali Floodplain), and AEZ 9 (Old Brahmaputra Floodplain). Three land types – high land (HL), medium high and (MHL) and low and (LL) – were considered in the SOC assessment. The SOC stock was estimated by multiplying SOC (%) with bulk density (g/cc) and soil depth (cm). Across the AEZs and land types, the SOC (%) decreased with the increase in soil depth. The SOC (%) was the highest in the low land and the lowest in the high land over the AEZs. The soil bulk density in every AEZ increased with soil depth. Bulk density of soil for medium high and varied from 1.26 g/cc to 1.67 g/cc, for high and from 1.33 g/cc to 1.55 g/cc, and for low land it was 1.13 g/cc to 1.44 g/cc. The SOC stock at 0-20 cm depth was higher (14.19-4.67 t/ha) in low land followed by medium high land (8.25-4.58 t/ha) and high land (6.46-3.39 t/ha) for all AEZs. Among the four AEZs, the highest SOC stock was found in AEZ 1 irrespective of land types. DOI: http://dx.doi.org/10.3329/bjar.v38i4.18947 Bangladesh J. Agril. Res. 38(4): 625-635, December 2013

Study on Arsenic Contamination in Soil and Water in Five-selected Agro Ecological Zone (AEZ) of Bangladesh

A research was carried out at the five different Agro-Ecological Zones (AEZ) of Bangladesh, viz. Tista Meander Floodplain (FP), High Ganges FP, Low Ganges FP, Active Ganges FP and Gopalganj-Khulna Bills during January 2001 to January 2002. The objectives were to assess the arsenic (As) concentration in the soil and water as well as to test tube well water samples and examines whether these exceed the acceptable limit of As. Water of shallow tube wells (STW) and soil samples were collected from ten sites under five AEZs of Bangladesh. Considerable number of water samples showed high contents of arsenic, which ranged from 0.032 to 203.9 ?g/l. Out of 428 water samples, 155 were found unsafe (>10-<50 ?g/l) and 78 were toxic (>50 ?g/l) for drinking purpose. However, out of 2648 soil samples collected from different Upazilas, only 4 samples collected from Chargat showed toxic level (>20 ?g/kg).

Response of T. Aman Rice (<i>Oryza sativa</i> L.) to S, Mg, Zn, B, Mo and Organic Amendments in Tista Meander Floodplain Soil

A field experiment was conducted at the BINA sub-station of Tajhat, Rangpur in the Tista Meander Floodplain soil during aman season 2003 to study the response of T. aman rice to S, Mg, Zn, B, Mo and organic amendments. The experiment was laid-out in a randomized complete block design with nine treatments is with three replications as T1: complete (S + Mg + Zn + B + Mo), T2: complete–S, T3: complete–Mg, T4: complete–Zn, T5: complete–B, T6: complete–Mo, T7: cowdung @ 5 t/ha, T8: poultry manure @ 5 t/ha and T9: control. Nitrogen, phosphorus and potassium were applied in recommended doses as basal. The highest grain (3927 kg/ha) and straw (4472 kg/ha) yields were recorded with the application of poultry manure, followed by cowdung and complete (S+Mg+Zn+B+Mo) treatment. The lowest yield was recorded in the control plot. The overall results indicate that application of organic amendments with NPK gave satisfactory yield of T. aman rice in the Tista Meander Floodplain Soil.

Integrated Nutrient Management for Sustainable Sugarcane Production in Different Agro-ecological Zones of Bangladesh

A field experiment was conducted to study the effects of integrated plant nutrition system (IPNS) on sugarcane yield and economic return at Ishurdi (High Ganges River Floodplain), Thakurgaon (Old Himalayan Piedmont Plain), Sreepur (Madhupur Tract) and Jaipurhat (Tista Meander Floodplain). The combined use of organic and inorganic fertiliser gave significantly higher sugarcane yield and economic benefit in all locations under study. Results revealed that average yield increase was 13.0 per cent higher for combined application of press mud/ cowdung at 12.5 tonnes per hectare along with inorganic fertilisers over use of only inorganic fertilisers in case of both MYG and HYG. In situ incorporation of dhaincha (Sesbania aculeata) as green manure increased sugarcane yield and contributed about 42-46 kg N per hectare in soil. Keywords: Integrated nutrient, management, sugarcane, sustainable, production.

Effect of Secondary and Micronutrients on the Yield and Nutrient Uptake by BRRI Dhan 32 in the Old Himalayan Piedmont Plain and Tista Meander Floodplain Soil

Effect of Secondary and Micronutrients on the Yield and Nutrient Uptake by BRRI Dhan 32 in the Old Himalayan Piedmont Plain and Tista Meander Floodplain Soil

Effects of magnesium on the performance of potato in the Tista Meander Floodplain soil

The experiment was conducted in the farmers' field of the Farming Systems Research and Development (FSRD) site, Rangpur under Tista Meander Floodplain highland soils (AEZ # 3b) for three consecutive Rabi seasons (2002-03 to 2004-05). The potato variety Cardinal was tested with 5 levels of magnesium viz., 0, 5, 10, 15, and 20 kg/ha to observe its effects on potato and to find out the optimum and economic dose of Mg for potato. The three years’ results revealed that magnesium had significant effects on tuber yield of potato. Significantly higher tuber yield (32.33, 31.63, and 28.03 t/ha in three successive years) was obtained from 10 kg/ha of Mg. Tuber yield tended to decrease with increasing rate of Mg beyond 10 kg/ha. Tuber yields increased over control by 18 and 31 % when magnesium was applied @ 5 and 10 kg/ha, respectively. Yield response to added Mg was quadratic in nature. The regression with Mg levels indicate that maximum tuber yield (30.32 t/ha) could be obtained at 13 kg/ha of Mg and the economic dose was also 13 kg/ha of Mg. Use efficiency of Mg was 512.25 kg tuber of potato per kg Mg per ha. After optimum level of Mg (13 kg/ha) tuber yield reduced by 3.83 kg for additional use of one kg Mg/ha. Key Words: Potato; tuber yield; magnesium; use efficiency. DOI: 10.3329/bjar.v34i2.5797Bangladesh J. Agril. Res. 34(2): 255-261, June 2009