BARI Mung-6 Research Articles

Responses of Water and Pigments Status, Dry Matter Partitioning, Seed Production, and Traits of Yield and Quality to Foliar Application of GA3 in Mungbean (Vigna radiata L.)

This study evaluated the role of gibberellic acid [GA3; (0, 100, 200, and 300 ppm)] in modulation of the growth, physiology, yield, and quality traits in two varieties (BARI Mung-6 and BARI Mung-8) of mungbean (Vigna radiataL.). Irrespective of the two varieties (BARI Mung-6 and BARI Mung-8), 100, 200, and 300 ppm of GA3differentially modulated the tested parameters (relative water content, RWC; photosynthetic pigments: chlorophyll a, chlorophyll b, and carotenoids; growth parameters: fresh and dry weights of leaves, petioles, stems, and roots; yield contributing traits such as plant height, number of pods plant−1, number of grains pod−1, pod length, and 100-grain weight; quality traits such as grain nitrogen and protein). However, compared to the lowest GA3(100 ppm) and the highest GA3(300 ppm), the moderate concentration of GA3(200 ppm) led to highest values of leaf-RWC, where this parameter exhibited 16.1 and 13.4% increase in BARI Mung-8 and BARI Mung-6, respectively. Similarly, the tested herein growth parameters and the yield traits significantly increased up to the foliar application of the moderate GA3concentration (200 ppm), and thereafter these traits decreased with 300 ppm GA3. The 200 ppm-led changes in the growth and yield traits were significantly higher in BARI Mung-8 when compared to BARI Mung-6. Considering the quality traits, GA3positively influenced the nitrogen and protein content in grains, where 200 ppm of GA3led to increases of 25.2% in N, and 17.7% in protein over control in BARI Mung-6; whereas, BARI Mung-8 exhibited 28.3% in N, and 18.3% in protein with 200 ppm GA3over control. Overall, BARI Mung-8 significantly responded to the foliar supply of 200 ppm GA3when compared to BARI Mung-6. Hence, in order to high yield and grain protein content, the application of 200 ppm GA3may be applied inV. radiatabefore and during flowering. The major mechanisms underlying the responses of the water relation, growth, and yield traits to the GA3concentrations need to be explored.

Socio Economic Determinant and Profitability of Bari Mungbean Variety in Some Selected Areas of Bangladesh

The study was undertaken to find out the socio economic determinants and profitability of BARI mungbean variety in some selected areas of Bangladesh. The study has been conducted three district viz. Jashore, Jhenaidah and Kushtia during June-July, 2020. A total of 90 farmers, 30 from each district were selected randomly for present study. It was observed that most of the farmer cultivated BARI mung-6 (67.78%), BARI mung-5 (21.11%) and BARI mung-7 (11.11%) in the study areas. BARI mung-6 was the popular variety among the farmers in the study areas as its adaptability to diverse nature and high yield. Total cost of mungbean cultivation was Tk. 46368ha-1, where as variable cost was Tk. 27391ha-1 and fixed cost was Tk. 18977ha-1. Among the cost item highest cost was land preparation cost Tk. 7684ha-1 (16.57%) followed by hired labour Tk. 4927ha-1 (10.63%), Seed Tk. 3584ha-1 (7.73%), pod picking cost Tk. 3487ha-1 (7.52%), pesticide Tk. 3029ha-1 (6.53%), fertilizer Tk. 2740ha-1 (5.91%) etc. Pod picking is important cost at mungbean cultivation and farmer expense averages Tk.12.00/kg of green pod. Women (64%) along with children (31%) were involved in pod harvesting. Average yield of mungbean was 1.030 tonha-1 in the study areas. Average Gross return was Tk. 66966ha-1 and net return was Tk. 20598ha-1. Benefit cost ratio was 1.44 that means the mungbean cultivation was profitable. Due to not synchronous ripening of pod mungbean harvest by the mechanical was not possible. Bad weather, pod picking and insect pest attack was major constraints for mungbean cultivation.

WEATHER PARAMETERS AFFECTING THE POPULATION DYNAMICS OF LEAF FOLDER AND POD BORERS ON MUNGBEAN

The experiment was conducted to know the abundance of major insect pests on 15 mungbean varieties viz., BARI Mung-1, BARI Mung-2, BARI Mung-3, BARI Mung-4, BARI Mung-5, BARI Mung-6, BINA Moog-4, BINA Moog-5, BINA Moog-6, BINA Moog-7, BINA Moog-8, BU Mug-1, BU Mug-2, BU Mug-4 and Patuakhali local Mung and the role of weather parameters on the population mobility of insects at the farmer’s field of sadar upazila of Patuakhali district, Bangladesh during late Robi season 2016. Variety BARI Mung-4 had the lowest number of leaf folder while variety BARI Mung-6 had the highest number of leaf folder indicating higher susceptibility to leaf folder. Variety BARI Mung-4 had the lowest number of gram pod borer and BARI Mung- 6 had the highest abundance of gram pod borer followed by BINA Moog-7. Variety BINA Moog-4 had the lowest number of legume pod borer and BARI Mung-6 had the highest abundance of legume pod borer followed by BINA Moog-7. Population of leaf folder showed a negative correlation (R2= -0.020) with temperature. Similarly, gram pod borer (R2= -0.317) and legume pod borer (R2= -0.014) showed a negative correlation with temperature. In case of relative humidity, population of leaf folder (R2= -0.175) showed a negative correlation while gram pod borer showed a positive correlation (R2= 0.031) but legume pod borer (R2= -0.086) showed a negative correlation.

Feasibility of Introducing Four Crops Based Cropping Patterns in Kushtia Area of Bangladesh

The trial was conducted at Multi Location Testing (MLT) site under On-Farm Research Division, BARI, Kushtia during the last week of February, 2015 to second week of February, 2017 at farmers’ field condition to find out the productivity and profitability of three alternate cropping patterns, i.e. ACP1=Mustard (var: BARI Sarisha-15) - Mungbean (var: BARI Mung-6) - T. Aus rice (var: BRRI dhan48) - T. Aman rice (var: Binadhan-7), ACP2=Lentil (var: BARI Masur-6) - Mungbean (var: BARI Mung-6) - T. Aus rice (var: BRRI dhan48) - T. Aman rice (var:Binadhan-7), ACP3=Wheat (var: BARI Gom-28) - Mungbean (var: BARI Mung-6) - T. Aus rice (var: BRRI dhan48) - T. Aman rice (var:Binadhan-7) against the existing cropping pattern, i.e. ECP= Lentil (var: BARI Mashur-6) – Sesame (BARI Teel-3) - T. Aman (var: Binadhan-7). Findings revealed that the required mean crop durations ranged 340-356 days for one cycle in a year in four crops based cropping patterns against 293 days in existing cropping pattern. Total seed/grain yields in terms of REY of ACP1, ACP2, and ACP3 were 14.85, 16.06 and 14.92 t ha-1 year-1, respectively which were 44%, 56% and 45%, respectively higher than that of existing pattern (10.30 t ha-1 year-1). Mean production efficiency (32.53-40.43 kg ha-1day-1), land use efficiency (93.15-97.53%) and mean gross margin ( Tk. 109393 - Tk. 127834 ha-1) of all alternate cropping patterns were higher than that of existing cropping pattern (PE: 23.63 kg ha-1day-1, LUE: 80.28% and gross margin Tk. 94929 ha-1). As a result, all alternate cropping patterns were agronomically feasible and economically profitable. Among the alternate cropping patterns, ACP2=Lentil (var: BARI Masur-6) - Mungbean (var: BARI Mung-6) - T. Aus rice (var: BRRI dhan48) - T. Aman rice (var: Binadhan-7) performed the best. Therefore, farmers in Kushtia area of Bangladesh might follow the alternate cropping patterns in high and medium high land for higher crop productivity and profitability over existing cropping pattern.
 The Agriculturists 2020; 18(1) 94-102

Yield Performance of Mungbean Genotypes as Influenced by Herbicides with Different Weed Management Practices

This research was conducted to investigate the effect of different herbicides with weed management practices on growth and yield performance of mungbean genotypes. The experiment consisted of two factors were mungbean genotypes and weed management. There were two genotypes namely BARI Mung 6 and BARI Mung 8. While there were five weed management practices namely control/no weeding and without herbicide application (T1), hand weeding at 20 and 40 DAS (T2), pre emergence herbicide (Panida) at 1-2 DAS (T3), pre emergence herbicide (Neon) at 2-3 DAS (T4), and post emergence herbicide (Neon) at 10-15 DAS+hand weeding (T5). The results revealed that BARI Mung 6 stand superior to BARI Mung 8 in respect of dry matter content/plant, pods/plant, seeds/plant, seed yield, and 1000 seed weight. Among weed management practices, maximum plant height (53.70 cm), dry matter weight/plant (17.96 g), pods/plant (18.31), seeds/plant (171.47), maximum weed control efficiency (33.78 %) obtained from T3 treatment. Based on the interaction effect showed that BARI Mung 6 weeded with pre emergence herbicide (Panida) at 1-2 DAS produced maximum seed yield (1.79 t/ha) as well as yield attributes showed 2.29 % higher seed yield.

Performance of Different Cultivars of Mungbean in Coastal Region of Bangladesh

The study was conducted at farmers’ field of Itbaria, Patuakhali sadarupazila under Patuakhali district during January to April 2016under the agro ecological zone AEZ-13 (Ganges Tidal Flood plain). This site was located in between 22°14' and 22°29' North latitudes and in between 90°12' and 90°28' East longitudes of Bangladesh. Fifteenmungbean varieties viz., BARI Mung-1, BARI Mung-2, BARI Mung-3, BARI Mung-4, BARI Mung-5, BARI Mung-6, BINA Moog-4, BINA Moog-5, BINA Moog- 6, BINA Moog-7, BINA Moog-8, BU Mug-1, BU Mug-2, BU Mug-4 and Patuakhali local Mung were tested to select best suitable variety for costal region.The experiment was laid out in randomized complete block design (RCBD) with threereplications. Significant variation was observed among the different mungbeanvarities in respect of majority of the observed parameters.BU Mug-1 showed the tallest plant height while the tallest pod length was observed in BARI Mung-5. The highest number of branches per plant was found in BINA Moog-4 whereas the highest number of leaves per plant found for BARI Mung-6. The highest seed yield and yield attributes like number of pods per plant, number of seeds per pod and 1000 seed weight was recorded in BARI Mung-6 followed by BINA Moog-8 while Patuakhali local Mung produced the lowest yield and attributes. Most of the yield contributing factors of BARI Mung-6 wasfavorable for better yield in coastal region of Bangladesh. Hence the mungbean production can be increased by introducingBARI Mung-6 in costal region.
 SAARC J. Agri., 18(1): 161-172 (2020)

Integrated Approach of Organic and Inorganic Fertilizer Management on Nutrient Composition and Uptake of Mungbean (Vigna radiata L.) in Udic Rhodustalf Soil

Background: Pulses are important food crops that can play a major role in achieving food security, nutrition, and human health, contributing to the sustainability of agriculture and aiding the mitigation and adaptation to climate change. The nutrient uptake is directly or indirectly affected by many factors like total concentration as well as available quantity of different nutrients, root development, aeration, water potential, climatic conditions and other related soil parameters.
 Aims: A field experiment was carried out to find out the effects of different manures along with inorganic fertilizers on nutritional status of two mungbean varieties.
 Study Design: Experimental treatments consisted of eight combinations of each manure and inorganic fertilizers with Soil Test Base (STB).
 Results: The results showed that integrated effects were found significant on Ca, Zn and Mn contents in seed and P, Mg, Fe, Cu, Zn and Mn contents in stover. The highest N (4.34%), Mg (0.48%), P (0.56%) contents in seed and N (1.52%), Mg (0.78%) and B (30.67 µg g-1) contents in stover was obtained by the application of 3 t ha-1 poultry manure + 70% STB. The highest seed protein content was found from the same treatment. On the other hand, the highest Zn, Mn, Cu and S contents in seeds, and Zn, Fe and K contents in stover were obtained from 3 t ha-1 vermicompost + 70% STB. The treatment of 3 t ha-1 poultry manure + 70% STB produced the highest uptake of N, P, K, Ca, Mg, Zn, Mn, and Cu in seeds and the highest uptake of Mg, Fe and B was found with stover. The nutrient contents of seeds were positively and significantly correlated with each other. In Principal Component Analysis (PCA), the first two principal components accounted for approximately 81.80% of the total variability. BARI Mung-6 appeared as the best variety and poultry manure @ 3 t ha-1 along with 70% inorganic fertilizers treatment for the better nutritional quality of Mungbean.
 Conclusion: It was observed that different treatments performed differently in respect of nutrients contents and uptake of seed and stover, and protein contents. From the above experimental findings, it is concluded that BARI Mung-6 appeared as the best variety and poultry manure @ 3 t ha-1 along with 70% IF should be applied for getting better nutritional mungbean seed with higher protein contents under the agroclimatic condition of BARI.

Screening of Mungbean Genotypes under Polyethylene Glycol (PEG) Induced Drought Stress Condition

Sixteen advance genotypes of mungbeans under 5 different concentrations of Polyethylene Glycol (PEG) were studied to find out the better cultivar against drought stress condition. The experiment results revealed that germination, seedling production and water-related behavior of mungbean genotypes differed significantly under different PEG (drought inducer) concentrations. The mungbean genotype BINA Mung-6 (V8) is proved as highly tolerant against drought stress condition among all other tested genotypes. The results of the investigation revealed that BINA Mung-6 (V8) genotype consistently scored the highest value for all parameters except for the root shoot ratio and water retention capacity that was statistically comparable to genotypes BARI Mung-4 (V2) and BINA Mung-5 (V7). Consistently poor performance were recorded from IPM-02-03 (V16) genotype which is statistically similar as genotypes BMXK1-09015-2 (V13) and BMXK1-09015-6 (V10). The maximum percentage of germination (98.12%), shoot length (139.40 mm), root length (99.07 mm), shoot dry weight (22.32 mg), root dry weight (6.88 mg), relative water content (94.78), water retention capacity (24.98), germination co-efficient (22.27) and vigor index (233.90) were reported from BINA Mung-6 (V8) at a concentration of 0 percent PEG. The minimum percentage of germination (28.22 percent), shoot length (31.17 mm), root length (16.50 mm), shoot dry weight (2.21 mg), root dry weight (0.97 mg), relative water content (25.55), water retention capacity (3.08), germination co-efficient (6.06) and vigor index (13.45) were reported from IPM-02-03 (V16) mungbean advance lines at 0 percent PEG. Maximum (0.92) root shoot ratio was recorded from both BARI Mung-8 (V6) and BMX-08011-2 (V11) mungbean genotypes at 20 percent PEG concentration and minimum (0.22) at 0 percent PEG concentration from BARI Mung-5 (V3) genotype. Maximum water retention capacity (74.45) was recorded at 20 per cent PEG concentration from IPM-02-03 (V16) genotype and minimum (5.22) was at 0 per cent PEG concentration from BINA Mung-6 (V8) genotype.

Phenotyping of mungbean (Vigna radiata L.) genotypes against salt stress and assessment of variability for yield and yield attributing traits

Salt tolerance is a complex polygenic trait that is genotype specific and tolerance can depend upon a plants developmental stage. To evaluate reproductive stage specific salt tolerance as well as investigate the inherent variability of mungbean (Vigna radiata L.) genotypes with respect to seed yields and yield-related traits, a pot culture experiment was conducted using 26 mungbean genotypes and exposure to salt stress (EC = 8.0 dS/m) applied at the reproductive stage, just before the opening of the first flowers. The experiment involved maintaining 100% field capacity for three weeks and used a randomized complete block design with three replicates. Data were collected, included days to maturity, plant height (cm), number of pod-bearing branches per plant, number of pods per plant, pod length (cm), number of seeds per pod, 100-seed weight (g) and seed yield per plant (g). Salt stress led to a significant (p<0.001) decrease in seed yield per plant, with yields of the genotypes BMX 11116, BMX 11176, BMX 11140, BMX 11111 and BMX 11163 being the least impacted by exposure to salt. Principal component analysis revealed that the first two components explained 63.5% of the total variation among the mungbean genotypes. Seed yield per plant showed a significant positive correlation with days to maturity, number of pod-bearing branches per plant, number of pods per plant, pod length (cm), number of seeds per pod, and 100-seed weight (g). Cluster analysis grouped the 26 genotypes into five distinct clusters, where the tolerant genotypes placed in cluster I. Based on their stress tolerance indices BARI Mung-6, BMX 11176, BMX 11116, and BMX 11140 were categorized as tolerant genotypes, were selected for further study under direct field conditions and are recommended for the genetic improvement of salt stress tolerance in mungbean.

Management Of Thrips And Pod Borers Using Chemicals, Botanicals And Biopesticides In Mungbean

The experiment was conducted to find out effective control measure against thrips and pod borers of mungbean by various means, including chemicals, botanicals and biopesticide. The mungbean variety, BARI Mung-6 was grown in the field and six treatments viz., T1 [Azadirachtin (Bioneem plus 1EC)], T2 [Bacillus thuringiensis (Bt. powder)], T3 [Spinosad (Tracer 45SC)], T4 [Chlorpyrifos + Cypermethrin (Nitro 505EC)], T5 [Thiamethoxam + Chlorantraniliprole (Voliam flexi 300SC)] and T0 [Untreated control (water spray)] were set in randomized complete block design (RCBD) with three replications. The insecticidal treatment options showed significantly different performance against thrips (Megalurothrips distalis), gram pod borer (Helicoverpa armigera) and legume pod borer (Maruca vitrata) on mungbean. The lowest population of thrips, gram pod borer and legume pod borer was found in Voliam flexi 300SC treated plot which showed maximum percent reduction of these pests. The lowest percent pod infestation by pod borers observed by the same treatment. Bioneem plus showed the intermediate results considering all the parameters. The maximum yield (1254.50 kg ha-1) and the highest marginal benefit cost ratio (MBCR) (6.68) were obtained from Voliam flexi 300SC. Considering effectiveness and marginal benefit cost ratio, Voliam flexi 300SC was more effective among treatments for controlling thrips and pod borers of mungbean followed by Nitro 505EC.
 SAARC J. Agri., 17(2): 79-91 (2019)

Performance of lentil-mungbean-T.aus rice-T.aman rice against existing cropping pattern lentil-jute-T.aman rice in Faridpur region

A trial was conducted in the farmers’ field at Farming Systems Research and Development (FSRD) site, Hatgobindapur, Faridpur during 2014-15 and 2015-16 to develop an alternate cropping pattern over existing cropping pattern for increasing cropping intensity, total productivity as well as farmers’ income. The alternate cropping pattern Lentil (var. BARI Masur-7)- Mungbean (var. BARI Mung- 6)- T. Aus rice (var. BRRI dhan48)- T.Aman rice (var. BRRI dhan62) was tested against the existing cropping pattern Lentil (var. Local)- Jute (var. JRO 524)- T.Aman rice (var. BRRI dhan33). All the four crops in the AP were grown successfully within stipulated time frame following recommended practices. Crop duration and turn around time in alternate cropping pattern were 340 days and 25 days while that in existing cropping pattern were 313 days and 52 days, respectively. Cropping intensity increased from 300% (in existing pattern) to 400% in the alternate cropping pattern. Two years results showed that, average yield of T.Aus rice, T.Aman rice, Lentil and Mungbean in the alternate cropping pattern were 3.75, 4.17, 1.31 and 0.80 t ha-1, respectively. The rice equivalent yield and production efficiency was increased by 18 and 35%, respectively over existing pattern. The gross margin of the whole alternate cropping pattern was Tk.106304 ha-1whereas Tk. 75480 ha-1from existing cropping pattern. The alternate pattern provided 41% higher gross margin over existing cropping pattern. The MBCR was 4.86 over existing cropping pattern.
 Bangladesh J. Agril. Res. 44(3): 537-552, September 2019

Morpho-anatomical appraisal of some pulse crops under salinity stress

The experiment was conducted at the field and laboratory of the Department of Crop Botany, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur during the period from December 2016 to March 2017 to find out the morpho-anatomical appraisal of some pulse crops of Fabaceae family under salinity stress. Seven pulse crops viz., Lentil var. BARI Masur-7, Mungbean var. BARI Mung- 6, Blackgram var. BARI Maskalai-1, Chickpea var. BARI Chola-9, Field pea var. BARI Motor-1, Grasspea var. BARI Khesari-3 and Cowpea var. BARI Felon-2; two levels of salinity 0 and 8 dSm-1were imposed as experimental treatments. It was laid out in a completely randomized design with three replications. The NaCl was directly mixed to the dry soil. The soil (6 kg pot-1) of each treatment was placed in plastic pots with drainage holes in the bottom. The results of the experiment revealed that, salt stress caused decrease in morphological attributes and also changed anatomical features. There was a significant variation in relative values (%) of plant height, root length (%) root dry matter (%) and shoot dry matter (%) of seven selected pulse crop varieties due to the salinity stress. The highest percentage of relative plant height (92), relative root length (98), relative root dry weight (89) and relative shoot dry weight (72.8) were observed in cowpea followed by grass pea and the lowest percentage of relative plant height (51), relative root length (56), relative root dry weight (54) and relative shoot dry weight (48) were observed in lentil. The stem anatomical features were found similar changes in xylem and phloem area. Among the pulse crop varieties, cowpea and grass pea were performed better whereas lentil and black gram were found more susceptible species than the others according to their morphological and anatomical attributes.
 Bangladesh J. Agril. Res. 44(3): 439-451, September 2019

In vitro Regeneration and Agrobacterium-mediated Genetic Transformation of Local Varieties of Mungbean (Vigna radiata (L). Wilczek)

An efficient Agrobacterium-mediated transformation compatible in vitro regeneration protocol was developed for two important varieties of mungbean (Vigna radiata (L.) Wilczek) cultivated in Bangladesh, namely Binamoog-5 and BARI Mung-6. Two different zygotic embryo derived explants, such as cotyledonary node (CN) and cotyledon attached decapitated embryo (CADE) were used for direct organogenesis of shoot. MS supplemented with 4.0 μM BAP was found to be the best for the development of highest number of multiple shoots from CADE in both the varieties of mungbean. While in case CN the best shoot formation was achieved on MS containing 4.0 μM BAP and 0.5 μM NAA in both varieties. Half strength of MS with 2.0 μM IBA was found to be most effective for producing healthy root from regenerated shoots. Following root induction, the in vitro raised plantlets were successfully transplanted to soil for their establishment. Considering overall responses, genetic transformation efficiency was found to be better with CADE explant using Agrobacterium tumefaciens strain LBA4404 harboring the binary plasmid pBI121 conferring GUS and nptII genes. Different factors influencing transformation was optimized during this study. Selection of transformed shoots was carried out by gradually increasing the concentration of kanamycin and such transformed shoots were eventually selected using 200 mg/l kanamycin. Stable expression of the GUS gene was detected in various parts of regenerated transformed plantlets. Transformed shoots were rooted on half strength MS containing 2.0 μM IBA and 100 mg/l ticarcillin. Rooted transformed plantlets were successfully transferred to soil. Stable integration of GUS and nptII genes in the putative transformed shoots was confirmed through PCR analysis.
 Plant Tissue Cult. & Biotech. 29(1): 81-97, 2019 (June)

Study on growth and yield of mungbean in southern part of Bangladesh

An experiment was carried out at the field laboratory of the Department of Agricultural Botany, Patuakhali Science and Technology University (PSTU), Patuakhali during the period from January to March, 2012 to study the effect of mugbean genotypes on growth, development, morpho-physiological, yield and yield attributing characters under the agro ecological Zone (AEZ-13) in the region of Southern part of Patuakhali District. Five hybrid genotypes of mugbean viz., Local variety (V1), BARI mung 5(V2), BINA mung 5(V3), BARI mung 6(V4) and BINA mung 8(V5) were used as planting materials for this study. Among the genotypes, BINA mung 5 showed significantly better performance on growth, yield and morpho-physiological characters compare to other genotype during this study while local variety were less efficient among those parameters. As a result, the tallest plant of 57.020 cm higher TDM (72.538 g/plant) and LA (421.152 cm2) were recorded in BINA mung 5 at harvest. BINA mung 5 also had higher number of seeds per pod (13.25), 1000 seeds weight (52.495g), grain yield (1.997t/ha), straw yield (3.660t/ha), biological yield (5.657t/ha) and harvest index (35.303%). On basis of these findings, BINA mung 5 was the most productive variety under the coastal area.
 Progressive Agriculture 29 (4): 313-319, 2018

Physiological responses of mungbean (Vigna radiata) varieties to drought stress

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.
 Bangladesh J. Agril. Res. 44(1): 1-11, March 2019

Effect of Arbuscular Mycorrhizal Fungi, Selenium and Biochar on Photosynthetic Pigments and Antioxidant Enzyme Activity Under Arsenic Stress in Mung Bean (Vigna radiata).

Environmental perturbations alter biochemical compounds in food crops. Arsenic (As), a toxic metalloid, is known to affect the cultivation of food crops in many regions of the world; however, the changes in chlorophyll, catalase (CAT), and proline in response to As stress and the role of stress relief substances remain largely unknown in mung bean (Vigna radiate L.). In this study, biochar (BC), arbuscular mycorrhizal fungi (AMF), and selenium (Se) were applied to soils as stress relief substances (under 30 mg kg-1 As stress), and the effects of BC, AMF, and Se on chlorophyll a, chlorophyll b, total chlorophyll, CAT activity, and proline content were studied in different mung bean genotypes. Under As stress, the chlorophyll a, chlorophyll b, and total chlorophyll contents in BARI mung 3, BARI mung 5, and BARI mung 8 were found statistically similar. Meanwhile, CAT activity increased in comparison to the control due to the application of BC, AMF, and Se in mung bean crops. However, proline was found significantly lower in AMF, BC, and Se-treated mung bean. This indicates that oxidative stress was potentially minimized in As-stressed mung bean crops due to the application of these stress relief substances. Notably, AMF was relatively effective against As stress in comparison to BC and Se. It is concluded that BC, AMF, and Se are all highly effective in enhancing antioxidant defenses as well as the nutritional quality of mung bean crops under As stress.

Response of mungbean varieties to boron fertilization

This experiment was carried out during the period of March-June 2016 to evaluate the influence of variety and boron levels on the growth and yield performance of four summer mungbean (Vigna radiata L.) varieties. The experimental treatments consisted of four mungbean varieties viz. BARI Mung-2, BARI Mung-6, Binamung-5 and Binamung-7 and four doses of boron viz. 0, 0.5, 1.0 and 1.5 kg ha-1. The experiment was arranged by randomized complete block design and replicated thrice. Variety BARI Mung-6 showed superiority to other varieties regarding pods plant-1, pod length, and 1000-grains weight which resulted in the highest seed yield (1.86 t ha-1). The lowest pods plant-1 in Binamung-7, pods length and 1000- grain weight in BARI Mung-2, number of grains pod-1, and seed yield (1.25 t ha-1) stover yield and harvest index were found in Binamung-5. Results revealed that the one kg ha-1 was superior to other doses of boron in respect of pods plant-1, pod length, number of grains pod-1, 1000- grain weight, seed yield, and stover yield as well as harvest index. The lowest seed yield (0.87 t ha- l) was found from control treatment. Variety BARI Mung-6 was grown with 1 kg ha-1 boron showed best performance to other interactions of variety and boron doses regarding pod length, number of pods plant-1, number of grains pod-1, number of grains plant-1, 1000-grain weight and seed yield (1.66 t ha-1).

Productivity and profitability of improved versus existing cropping pattern in Kushtia region

The trial was conducted at Multi Location Testing (MLT) site under On-Farm Research Division, BARI, Kushtia during the last week of February, 2015 to second week of February, 2017 at farmers’ field condition to cover two cropping cycle of four crops. The main objectives of the trial were to verify the feasibility of growing improved cropping pattern Mustard-Mungbean-T.Aus-T.Aman rice and to compare its productivity and profitability with existing cropping pattern Lentil-Sesame-T.Aman rice. The varieties BARI Sarisha-15, BARI Mung-6, BRRI dhan48 and Binadhan-7 were used for the crop Mustard, Mungbean, T.Aus and T.Aman rice, respectively in the improved cropping pattern, while in case of existing pattern, the varieties were BARI Masur-6, BARI Till-3 and Binadhan-7 for Lentil, Sesame and T.Aman rice, respectively. Findings revealed that the mean crop duration of 340 days were required for one cycle in a year in improved cropping pattern which implied that four crop based cropping pattern was agronomically feasible to replace existing cropping pattern. Total seed/grain yield in terms of REY of improved cropping pattern was 14.85 t ha-1 year-1 which was 44% higher than that of existing pattern (10.30 t ha-1 year-1). Mean production efficiency (35.78 kg ha-1 day-1), land use efficiency (93.15%) and labour employment (589 mandays ha-1 year-1) of improved cropping pattern was 51%, 16% and 62%, higher, respectively than that of existing cropping pattern. The mean net economic advangaes of improved cropping pattern was Tk 12677 ha-1 year-1 which implied that the improved cropping pattern was economically viable. Moreover, the improved cropping pattern increased cropping intensity, farmers knowledge, skill, and income as well as employment. It also maintained soil health by incorporating mungbean stover and T.Aus rice straw in the soil. Therefore, farmers in Kushtia region of Bangladesh could follow the improved cropping pattern in their high and medium high land for higher productivity and profitability as well as employment generation over existing cropping pattern.Bangladesh J. Agril. Res. 43(4): 587-598, December 2018

Effect of foliar application of gibberellic acid on different growth contributing characters of mungbean

The comparative growth and yield performances between two Mungbean (BARI Mung 6 and BARI Mung 5) varieties with foliar application of GA3 (0, 50, 100 and 150 ppm) were studied to find out the suitable variety and optimum level of GA3 application. The design of experiment followed was RCBD. Data on morpho-physiological characteristics were recorded at 15, 25, 35, 45and 55 days after sowing (DAS) and yield contributing parameters were recorded only at harvest stage. The results showed that application of GA3 @ 100 ppm produced better performance on morpho-physiological characters namely, plant height (56.59cm), number of leaves per plant (10.75), branches per plant (4.75), length of root (24.73cm), total dry matter weight (12.67g)which were recorded from the variety BARI mung 6 with the foliar application of GA3 @ 100 ppm. Yield contributing characters were also showed the highest performance in terms of number of pods per plant (23.40), pod length (6.67cm), number of seeds per pod (12.82), thousand seed weight (33.95 g), seed yield (7.53 g/plant and 1.92 t ha–1), and harvest index (35.36%) which were the highest with the application of 100 ppm GA3 in case of BARI Mung 6. Single and combined effects of treatments were found statistically significant. Between two varieties BARI Mung 6, among the treatments GA3 @ 100 ppm as foliar application and interaction effect of GA3 @ 100 ppm and BARI mung 6 showed the highest performance in respect of all growth and yield parameters.
 Progressive Agriculture 29 (3): 233-238, 2018

Effect of Manures with Fertilizers on Yield and Yield Traits of Mungbean (Vigna radiate L.)

An experiment was carried out at the Agronomy Field of Sher-e-Bangla Agricultural University, Dhaka during the period from March to June 2015 (Kharif-I season) to find out the effect of different manures along with inorganic fertilizers on yield and yield traits of mungbean varieties. The experiment consisted of two factors: factor A: five levels of manures along with inorganic fertilizers [ T0 = Control (no fertilizer or manure), T1 = Recommended dose of fertilizer (R) (45 kg urea ha-1 + 100 kg TSP ha-1 + 58 kg MoP ha-1), T2 = R + cowdung (3 t ha-1), T3 = R + poultry manure (2 t ha-1), T4 = R + vermicompost (2.5 t ha-1)] and factor B: two mungbean varieties; (V1 = BARI Mung 5 and V2 = BARI Mung 6). The experiment was laid out in split- plot design with three replications. The effect of manures along with recommended inorganic fertilizers on yield and yield traits were found significant. The maximum grain yield (1.53 t ha-1) and maximum stover yield (1.88 t ha-1) was recorded from T4 treatment. Mungbean variety had also significant influence on yield and yield traits. The maximum seed yield (1.58 t ha-1) was obtained from var. BARI Mung 6) but Maximum stover yield (1.91 t ha-1) was obtained from var. BARI Mung 5). The combined effects of manures along with recommended inorganic fertilizers and variety were found statically significant on yield and yield traits. The maximum seed yield (2.01 t ha-1) and maximum stover yield (2.61 t ha-1) was recorded from T4V2. There were positive correlations of seed yield with different yield components. It was comparatively stronger correlations in BARI Mung 5 and weaker in BARI Mung 6. So, var. BARI Mung 6 performed the best result with the application of vermi-compost @ 2.5 t ha-1 with recommended dose of fertilizer.Bangladesh Agron. J. 2017, 20(2): 115-122