Sania Afrin Tania
Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
F M Jamil Uddin*
Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
Mungbean, Variety, Boron, Yield
Crop-Soil-Water Management
Mungbean, Boron
2.1 Experimental siteThis experiment was conducted at the AgronomyField Laboratory (AFL) of Bangladesh AgriculturalUniversity during the period from March to June 2016. The site is located at24°43′8.3′′N,90°25′41.2′′E, in the southwest part of Old Brahmaputra river at an altitude of 18 m. The site belongs to non-calcareous dark grey floodplain soil under Old BrahmaputraFloodplain ‘AEZ-9’ (UNDP and FAO, 1988). The climate of the area is sub-tropical, which is characterized by low temperature and scanty rainfall during Rabi season (October to March) and high-temperature with heavy rainfall during the Kharif season (April to September). The experimental field was a medium-high land with well-drained clay loam textured soil having a pH value 6.8. During the experimental period the maximum, minimum and average temperature range between 29.96°Cand 32.06°C, 19.73°Cand 25.86°Cand 24.85°Cand 28.96°C, respectively. While the average relative humidity, total sunshine and total rainfall ranged from 73.74–85.50%, 116.7–233.0 h month−1 and 32.6–413.7 mm, respectively.
2.2 Experimental treatments: The experiment has consisted of four mungbean varieties viz. a) BARI Mung–2, b) BARI Mung–6, c)Binamoog–5, d) Binamoog–7 and four doses of boron viz. a) 0.0 (kg ha−1) (control) b) 0.5 (kg ha−1), c) 1.0(kg ha−1), and d) 1.5 (kg ha−1). The experiment was conducted in a randomized complete block design with three replications. The unit plot size was 3 m×2 m.
2.3 Land preparation: The land was opened with a power tiller on 17 March 2016. Later on, ploughing and cross ploughing were done with country plough followed by laddering. Weeds, stubble and crop residues were removed. The corners of the field were spaded and large clods were broken. Land preparation was completed on19 March 2016. Urea and muriate of potash were applied at the rate of 50 and 35 kg ha−1, respectively, during final land preparation at each planting date as a basal dose. Boron was applied in the form of slob-ber Boron BO–3following the treatment specification of the experiment as basal dose.
2.4 Crop husbandry seems were sowed on 25 March 2016 @ 40 kg ha−1forall varieties. The distance of row to row and plant to plant was maintained at 30 cm and 10 cm, respectively. Two times weeding and thinning were done simultaneously at 20 and 30 days after sowing. No irrigation was applied during the experimental peri-ods as there was no symptom of moisture stress. The crop was damaged by pod borer which was controlled successfully by applying ‘Gain’ @ 1.7 L ha−1. When80% of the pods turned brown in color, the crop was assessed to attain maturity for harvesting. Central5.0 m2area of each plot was harvested. Plants were uprooted and bundled separately plot-wise. Bundles were tagged and brought to the threshing floor. All of the harvested pods were kept separately in properly tagged gunny bags. The crop bundles were sun-dried for four days on the threshing floor. Seeds were separated from the plants by beating them with bamboo sticks. The seeds thus collected were sun-dried for reducing the moisture in the seeds. The grain yield and straw yield were recorded and converted to ton ha−1. From each plot five plants were collected at random by uprooting prior to harvesting to collect the data on crop and yield components.
2.5 Statistical analyses: The collected raw data were first checked for normality distribution. Then the mean comparisons were checked by ANOVA using Statistical softwareMSTAT–C and Duncan’s Multiple Range Test (Gomezand Gomez, 1984) was used for mean comparison.
Fundamental and Applied AgricultureVol. 4(1), pp. 655–660: 2019
Journal