Year 2013

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    EFFECT OF NITROGEN SOURCES ON SPIKELET STERILITY AND YIELD OF BORO RICE
    (DEPARTMENT OF AGRONOMY, 2013-12) ULLAH, SHEIKH SALAMAT
    A research work was carried out at the Agronomy Farm, Sher-e-Bangla Agricultural University, and Dhaka during the period from November 2012 to June 2013 in order to determine the suitable nitrogen source to observe the growth performance with a view to increasing the grain yield by reducing spikelet sterility in boro rice. The experiment comprised four sources of nitrogen viz. no nitrogen, BRRI recommended dose of prilled Urea, Govt. approved dose of mixed NPK and BARC recommended dose of urea super granule (USG), and four varieties viz. BRRI dhan29, BRRI dhan58, BADC SL8H and Heera. The experiment was set up in a split-plot design with three replications. Experimental results indicated that nitrogen sources had significant effect on plant height, tillers hill -1 , effective tillers hill -1 , non-effective tillers hill -1 , grains panicle , unfilled grains panicle -1 , spikelet sterility (%), grain yield, straw yield, biological yield and harvest index. The application of USG showed the highest grain yield (8.64 t ha -1 ) and the lowest spikelet sterility (%) than any of nitrogen and other sources of nitrogen treatments. All the studied characters except harvest index varied significantly due to varieties. Among the varieties, BRRI dhan29 out -1 yielded Heera, BADC SL8H and BRRI dhan58 by 0.85, 1.13 and 1.98 t ha , respectively which is mainly attributable to the highest number of grains panicle 1 (98.57) and markedly lower level of spikelet sterility (11.13 %). The combination of the USG application and BRRI dhan29 had the higher performance in terms of producing the highest grain yield by significant reduction of spikelet sterility (%) among the interaction effects. -1 -
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    GROWTH AND YIELD OF CHICKPEA AS INFLUENCED BY DIFFERENT MICRONUTRIENTS
    (DEPARTMENT OF AGRONOMY, 2013-12) MAHMUD, MD. SABBIR
    An experiment was conducted at the research field of Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka during the period from November, 2011 to March, 2012 to find out the influence of the different micronutrient application to chickpea crops for increased seed yield. The treatment were designed with two factors i. Cultivars; V = BARI Chola-6 and V 2 = BARI Chola-9 and ii. Micronutrient application; F 1 = Control (No fertilization), F 1 0 = Recommended NPK + all (B,S,Zn,Mg) +Zypsum in soil, F = Recommended NPK + B,S,Zn,Mg (Sprey), F =Recommended NPK + 3 without B (Sprey), F 4 3 = Recommended NPK + 3 without S (Sprey), F = Recommended NPK + 3 without Zn (Sprey), F 6 5 = Recommended NPK + 3 without Mg (Sprey). The experiment was laid out in randomized complete block design with three replications. Results revealed that cultivars had significant effect on yield attributes and yield of chickpea. BARI Chola-6 gave maximum pods plant (30), 1000-seed weight (117.44 g), harvest index (43.97%) as well as seed yield (1.72 t ha -1 ) whereas BARI Chola-9 which showed lowest grain yield. In case of micronutrient application, significant variations were observed in yield attributes and yield of chickpea. F 1 () gave higher pods plant -1 (45.98), 1000 2 -1 seed weight (122.3 g), harvest index (46.39%) as well as seed yield (2.19 t ha ) while control gave minimum yield. Out of 14 treatment combinations, BARI Chola-6 cultivated with Recommended NPK + all (B,S,Zn,Mg) +Zypsum in soil performed the best results in terms of growth and yield. The maximum pods plant -1 (55.57), seeds pod -1 (2.21), 1000-seed weight (124.3 g), harvest index (48.45 %) as well as seed yield (2.51 t ha () minimum results. -1 ) were recorded in V 1 F 1 () while V 2 -1 F 0
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    SUCCESSIVE CULTIVATION OF INBRED AND HYBRID RICE USING CLONAL TILLERS IN BORO SEASON
    (DEPARTMENT OF AGRONOMY, 2013-12) HORE, PRETOM KUMAR
    A field experiment was conducted at the Agronomy field, Sher-e-Bangla Agricultural University, Dhaka from November 2012 to July 2013. Experiment consisted of two factors: Factor A: Variety viz. BRRI dhan29 (V 1 ) and BRRI hybrid dhan2 (V ) and Factor B: Planting material viz. Nursery seedlings (N), First generation clonal tillers (C 1 ) collected from N, Second generation clonal tillers (C 2 ) collected from C , Third generation clonal tillers (C 3 ) collected from C and Fourth generation clonal tillers (C 4 ) collected from C 3 2 , following split-plot design with three replications. Hybrid variety BRRI hybrid dhan2 was the early variety (89 days and 123 days, respectively for flowering and maturity) whereas inbred variety BRRI dhan29 (100 days and 130 days, respectively for flowering and maturity) was the late one. The maximum number of total grains, filled grains and unfilled grains panicle -1 (212.82, 161.29 and 51.53, respectively) were obtained from BRRI dhan29 while the minimum from BRRI hybrid dhan2 (147.83, 139.31 and 8.52, respectively) but yield was not varied significantly. The maximum weight of 1000-grain (26.50 g) was obtained from hybrid variety and the minimum from the inbred one (19.70 g). The nursery seedlings gave highest grain yield (9.23 t ha -1 ) that followed by first generation clonal tillers (7.44 t 1 2 A field experiment was conducted at the Agronomy field, Sher-e-Bangla Agricultural University, Dhaka from November 2012 to July 2013. Experiment consisted of two factors: Factor A: Variety viz. BRRI dhan29 (V 1 ) and BRRI hybrid dhan2 (V ) and Factor B: Planting material viz. Nursery seedlings (N), First generation clonal tillers (C 1 ) collected from N, Second generation clonal tillers (C 2 ) collected from C , Third generation clonal tillers (C 3 ) collected from C and Fourth generation clonal tillers (C 4 ) collected from C 3 2 , following split-plot design with three replications. Hybrid variety BRRI hybrid dhan2 was the early variety (89 days and 123 days, respectively for flowering and maturity) whereas inbred variety BRRI dhan29 (100 days and 130 days, respectively for flowering and maturity) was the late one. The maximum number of total grains, filled grains and unfilled grains panicle -1 (212.82, 161.29 and 51.53, respectively) were obtained from BRRI dhan29 while the minimum from BRRI hybrid dhan2 (147.83, 139.31 and 8.52, respectively) but yield was not varied significantly. The maximum weight of 1000-grain (26.50 g) was obtained from hybrid variety and the minimum from the inbred one (19.70 g). The nursery seedlings gave highest grain yield (9.23 t ha -1 ) that followed by first generation clonal tillers (7.44 t 1 2ha -1 ) and second generation clonal tillers (6.57 t ha -1 ). The next two successive generation of clonal tillers also produced around 3 t ha -1 grain yield. The maximum grain yield (9.6 t ha -1 ) was observed in nursery seedlings of BRRI hybrid dhan2 that similar to the same planting material of BRRI dhan29 (8.86 t ha -1 ). The first and second generation clonal tillers of both the varieties produced more than 6 t ha grain yield. -1
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    SCREENING OF POTATO VARIETIES FOR ARSENIC TOLERANCE
    (DEPARTMENT OF AGRONOMY, 2013-12) HAQUE, MD. NAZMUL
    A pot experiment was conducted at the Agronomy research field, Sher-e-Bangla Agricultural University, Dhaka from November 10, 2012 to February 18, 2013 to find out the effect of 3 different Arsenic (As) levels viz., As0 (control), As1 (25 mg As kg-1 soil), As2 (50 mg As kg-1 soil) on growth, yield and quality of fourteen potato varieties viz., V1 (Diamant), V2 (Cardinal), V3 (Asterix), V4 (Granola), V5 (Lady Rosetta), V6 (Courage), V7 (BARI TPS-1), V8 (Meridian), V9 (Felsina), V10 (Laura), V11 (Quincy), V12 (Sagitta), V13 (Rumana), V14 (Jam Alu). The different levels of As had significant effect on most of the growth, yield and quality contributing parameters of potato irrespective of varieties. All parameters studied in this experiment were decreased with the increasing As levels except number of tubers hill-1, non-marketable yield plant-1, 28-45 mm and <28 mm sized tuber, total soluble solids. Among the fourteen potato varieties, the yield of potato negatively affected by As contamination. The variety ‘Felsina’ produced maximum yield plant-1 (426.2 g) whereas, ‘Jam Alu’ showed minimum yield plant-1 (77.15 g) irrespective of As levels. The variety ‘Rumana’ accumulated maximum As in peel (2.95 mg kg-1) and in flesh (0.189 mg kg-1) while, ‘Jam alu’’ loaded minimum in peel (2.31 mg kg-1) and ‘Cardinal in flesh (0.100 mg kg-1). The results showed that though most of the parameters were decreased with the increasing As levels but most of the parameters remained statistically similar up to 25 mg As kg-1 soil and thereafter drastically decreased. The results also revealed that the yield of potato varieties were decreased with increasing As levels but the accumulation of As increased with increasing As levels. In case of As accumulation, peel always accumulated maximum As than that of tuber flesh. Among the treatment combinations, ‘Felsina’ cultivated with 0 mg As kg-1 soil performed the best results and the same variety with 25 mg As kg-1 soil also showed the statistical similar results in terms of growth and most of the yield parameters. In contrary, the maximum As accumulation both in peel 6.43 mg kg-1 and in flesh 0.313 mg kg-1 were found in ‘Rumana’ at 50 mg As kg-1 soil. Though the variety ‘Felsina’ produced maximum yield but the accumulation of As was also high in peel (6.02 mg kg-1) and in flesh (0.247 mgkg-1), respectively. On the basis of As accumulation, the variety ‘Cardinal’ and ‘Diamant’ were suitable for cultivating up to 25 mg As kg-1 contaminated soil though these two varieties produced little bit lower yield (399.0 and 436.1 g plant-1, respectively) than that of ‘Felsina’ (448.8 g plant-1).
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    EFFECT OF VARIETY, SOWING TIME AND IRRIGATION ON THE GROWTH OF WHEAT
    (DEPARTMENT OF AGRONOMY, 2013-12) NAHER, LUTFUN
    The experiment was conducted through November 2012 to March 2013 in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, to find out the effect of variety, sowing time and irrigation on growth of wheat. The experiment comprised three factors; Factors A: four improved wheat varieties viz. (i) V1 = BARI Gom 21 (Shatabdi), (ii) V2 = BARI Gom 25, (iii) V3 = BARI Gom 26 and (iv) V4 = BARI Gom 27; Factor B: three sowing times viz. S1: Sowing at 18 November, S2: Sowing at 03 December and S3: Sowing at 19 December, Factor C: two irrigation viz. I: Irrigation; I0: No irrigation i.e. control. The experiment was laid out in Split split plot design with three replications. Variety was assigned in the main plot, sowing time was in the sub-plots and irrigation was in the sub-sub plots. Data was taken on different morph physiological parameters such as plant height, number of tillers plant-1, leaves plant-1, leaf area index (LAI), seed and husk development, dry matter, crop growth rate (CGR) and relative growth rate (RGR) at different days after sowing (DAS). It was evident from the results that morpho physiological characters of wheat were significantly influenced by variety, sowing time and irrigation and their interaction. Experimental results indicated that plant height and LAI, number of tillers plant-1 and leaf plant-1 increased up to 45 DAS and there after declined. Seed and husk gained weight 78 and 94 DAS respectively and thereafter remained constant. Dry matter per plant increased up to maturity while CGR and RGR up to 60-90 DAS stage. Variety, sowing time, irrigation and their interactions had significant effect on the morphological parameters except CGR and RGR. At maturity V1S1I showed significantly the highest plant height (98.95 cm), number of tillers plant-1 (7.58) and leaves plant-1 (39.89), LAI (2.02), individual grain weight (0.05 g), and individual husk weight (0.017 g) and dry matter plant-1 (19.24 g).
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    GROWTH AND YIELD VARIATIONS IN LENTIL FERTILIZED WITH DIFFERENT FORMS OF UREA
    (DEPARTMENT OF AGRONOMY, 2013-12) AKTAR, FARZANA
    The experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Dhaka during rabiseason from November 2012 to March 2013 to study the response of growth and yield of lentil was cultivated with different forms of urea [prilled urea, (PU) and urea super granules, (USG)].The variety BARImasur6 was used as test crop. The treatment consisted of fourteen variations as T1 = Prilled urea (PU) broadcasted, T2= PU given between two rows, T3 = USG placed at 10 cm distance (avoid one row), T4 = USG placed at 10 cm distance (avoid two rows), T5 = USG placed at 10 cm distance (avoid three rows), T6 = USG placed at 20 cm distance (avoid one row), T7 = USG placed at 20 cm distance (avoid two rows), T8 = USG placed at 20 cm distance (avoid three rows), T9 = USG placed at 30 cm distance (avoid one row), T10 = USG placed at 30 cm distance (avoid two rows), T11 = USG placed at 30 cm distance (avoid three rows), T12 = USG placed at 40 cm distance (avoid one row), T13 = USG placed at 40 cm distance (avoid two rows), T14 = USG placed at 40 cm distance (avoid three rows). USG (1.8 g) placed at 10 cm depth in each case. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Results showed significant variations among the treatments in respect of major studied parameters. The tallest plant, maximum branches plant-1 and above ground dry weight plant-1 at each growth stage were observed with T6 [USG placed at 20 cm distance (avoid one row)] and lowest value of these parameters were recorded fromT14 [USG placed at 40 cm distance (avoid three rows)].Pods plant-1(47.96), seeds pod-1(2.14), 1000 seed weight (26.33g), seed yield (2.11t ha-1), stover yield (2.87t ha-1) and biological yield (4.98t ha-1) were recorded maximum with T6[USG placed at 20 cm distance (avoid one row)] and minimum values were recorded fromT14[USG placed at 40 cm distance (avoid three rows)] in all these parameters.USG placed at 10 cm depth at 20-30 cm distance showed similar performance. It was evident that USG performed better than prilled urea.
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    EFFECT OF SEEDLINGS PER HILL AND WEED MANAGENMENT STRATEGIES ON GROWTH AND YIELD OF BRRI dhan50
    (DEPARTMENT OF AGRONOMY, 2013-12) HASAN, MD. ARAFAT
    A field experiment was conducted at the farm of Sher-e-Bangla Agricultural University (90º33´ E longitude and 23º77´ N latitude), Dhaka, Bangladesh during November 30, 2012 to May 05, 2013 in boro season with a view to find out the performance of BRRI dhan50 with different seedlings per hill under different weed management strategies. The experiment was carried out with four plant population densities i.e. 2 seedlings hill-1 (P1), 4 seedlings hill-1 (P2), 6 seedlings hill-1 (P3) and 8 seedlings hill-1 (P4) in the main plot and five weed management strategies viz. no weeding (control) (W0), two hand weeding at 20 and 35 DAT (W1), Weeding by BRRI rice weeder at 20 and 35 DAT (W2), Topstar 400SC (Oxadiargyl 400 g L-1) @ 100 ml ha-1 as pre-emergence (W3) and Sunrice 150WG (Ethoxysulfuron 150 g L-1) @ 185 ml ha-1 as post-emergence herbicide (W4) in the sub plot in split plot design. Twenty two different weed species found in the field among which Cyperus michelianus (36.73%) at 30 DAT, Cyperus esculentus (25.13%) and Alternanthera sessilis (21.54%) at 60 DAT, Fimbristylis miliaceae (19.50%) at 90 DAT were dominant. Application of Sunrice 150WG showed highest weed control efficiency at 30 DAT 80.94% and 61.52% at 60 DAT. Two seedlings hill-1 (P1) showed highest weed control efficiency (58.92%) at 30 DAT and 4 seedlings hill-1 (P2) also showed highest weed control efficiency (39.18%) at 60 DAT. Both seedlings per hill and weed management strategies significantly influenced the growth, yield and yield contributing characters of BRRI dhan50. The result showed that 2 seedlings hill-1 (P1) performed highest grain yield (5.70 t ha-1), straw yield (7.81 t ha-1), biological yield (13.52 t ha-1) and harvest index (42.06 %) and post-emergence herbicide Sunrice 150WG control weeds very successfully resulting highest growth and yield contributing characters of rice. Among the weed management strategies Sunrice 150WG (W4) showed best in producing highest grain yield (5.36 t ha-1), straw yield (7.42 t ha-1), biological yield (12.77 t ha-1) and harvest index (41.63%). The interaction between seedlings per hill and weed management strategies showed that 2 seedlings hill-1 with Sunrice 150WG appeared as a good combination in producing highest grain yield (6.81 t ha-1), straw yield (8.69 t ha-1), biological yield (15.49 t ha-1) and harvest index (43.96%) in BRRI dhan50.
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    GROWTH AND YIELD PATTERN OF BLACKGRAM AS AFFECTED BY DIFFERENT NITROGEN APPLICATION METHODS
    (DEPARTMENT OF AGRONOMY, 2013-06) RAY, DOLON CHANDRA
    The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh during the period from September to December 2012 to study the response of blackgram with maximum utilization of nitrogen given in different method. The variety BARI mass-3 was used as the test crop. The experiment consisted of the following treatments as T0 = Prilled urea (PU) broadcast, T1 = PU given in furrows, T2 = PU given between two rows, T3 = PU and seeds given in same furrows, T4 = USG placed at 10 cm distance (avoid one row), T5 = USG placed at 10 cm distance (avoid two rows), T6 = USG placed at 10 cm distance (avoid three rows), T7 = USG placed at 20 cm distance (avoid one row), T9 = USG placed at 20 cm distance (avoid two rows), T9 = USG placed at 20 cm distance (avoid three rows), T10 = USG placed at 30 cm distance (avoid one row), T11 = USG placed at 30 cm distance (avoid two rows), T12 = USG placed at 30 cm distance (avoid three rows), T13 = USG placed at 40 cm distance (avoid one row), T14 = USG placed at 40 cm distance (avoid two rows) and T15 = USG placed at 40 cm distance (avoid three rows). USG (1.8 g) placed at 10 cm depth in each case. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Results revealed that data on different growth, yield and yield contributing characters of blackgram were recorded and significant variations were observed among the studied characters. Treatment T1 (PU given in furrows) registered the maximum plant height (22.22 cm, 53.91 cm, 53.91cm, 74.86 cm an 76.53 cm), leaves plant-1 (4.03, 10.20, 17.93, 20.50 and 22.57), branches plant-1 (1.53, 4.26, 4.57, 5.11 and 6.00) and highest total dry weight (0.43 g, 4.57 g, 15.01 g, 28.31 g and 21.19 g) at 15, 35, 55, 75 DAS and harvest, respectively. The minimum plant height (18.47 cm, 43.47 cm, 43.47 cm, 57.50 cm and 53.79 cm), leaves plant-1 (3.10, 6.73, 11.73, 13.03 and 14.90), branches plant-1 (1.13, 2.39, 2.88, 2.92 and 3.33) and the lowest total dry weight (0.26 g, 3.05 g, 11.83 g, 23.04 g and 16.13 g, respectively) were observed with T15 (USG placed at 10 cm depth at 40 cm distance avoiding three rows) at all growth stages. The maximum yield contributing characters like pods plant-1 (20.10), pod length (4.57 cm), seeds pod-1 (6.80) and 1000-seeds weight (60.93 g) were found when crop was given prilled urea in furrow (T1). Plant showed minimum pods plant-1 (15.23), pod length (3.87 cm), seeds pod-1 (6.21) and 1000-seed weight (55.95 g) when treated with lower amount of USG (T15). The highest seed yield, stover yield and biological yield were noted as 1.32 t ha-1, 2.23 t ha-1 and 3.55 t ha-1 from T1, respectively, when T15 showed the minimum seed yield (1.00 t ha-1), stover yield (1.52 t ha-1) and biological yield (2.39 t ha-1). It was evident that the results with prilled ureawere more or less similar with urea super granule.
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    GROWTH YIELD AND ECONOMICS OF BARI SARISHA 14 AS INFLUENCED BY DIFFERENT MANGEMENTS UNDER IRRIGATED AND NON IRRIGATED CONDITION
    (DEPARTMENT OF AGRONOMY, 2013-06) MOMTAJ, UMMA MALIHA
    The experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Dhaka during the rabi season from November 2012 to February 2013 to evaluate growth yield and economics of BARI Sarisha 14 as influenced by different managements under irrigated and non irrigated condition. In this experiment, the treatment consisted of two irrigations viz. no irrigation and with irrigation; and seven different management practices viz. all management, all management without row, all management without mulching, all management without weeding, all management without fertilizer, all management without insecticide, all management without fungicide. The experiment was laid out in two factors split plot design with three replications. Results showed significant variations among the treatments in respect of majority of the observed parameters. The highest yield per hectare (0.86 tones) was obtained from irrigation with all management practices. The highest benefit cost ratio (BCR) (1.65) was obtained in the treatment combination of irrigation with all management along with without mulching and without weeding.
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    EFFECT OF IRRIGATION AND WEEDING ON THE YIELD COMPONENTS AND YIELD OF MUSTARD (SAU Sarisha-3)
    (DEPARTMENT OF AGRONOMY, 2013-06) KIBRIA, MD. TONMOY
    The experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Dhaka during the period from October 2011 to February 2012 to study the effect of irrigation and weeding on the yield components and yield of mustard (SAU sarisha-3). In the experiment, the treatment consisted of four irrigation viz. I0 = no irrigation, I1=one irriation at 20 DAS (just before flowering), I2= Two irrigation, 1st at 20 DAS + 2nd at 40 DAS (during siliqua formation), I3=Three irrigation, 1st at 20 DAS + 2nd at 40 DAS + 3rd at 60 DAS (during seed maturation stage) and three different weeding viz. W0=No weeding (Control), W1= One weeding at 10 DAS, W2= Two weeding, 1st at 10 DAS + 2nd at 20 DAS. The experiment was laid out in two factors Randomized Complete Block Design (RCBD) (factorial) with three replications. Results showed that significant variations occurred among the treatments in respect of majority of observed parameters. Tallest plant (101.00 cm), maximum branches per plant (7.70), siliquae per plant (138.8), seeds per silliqua (20.06) and seed yield (1.98 t/ha) was produced by two irrigations. Tallest plant (102.10 cm), maximum branches per plant (7.90), siliquae per plant (131.50), seeds per silliqua (20.02) and seed yield (1.88 t/ha) was produced by two weedings. Shortest plant (98.49 cm), minimum branches per plant (7.17), siliquae per plant (111.9), seeds per silliqua (19.37) and seed yield (1.34 t/ha) was produced by no irrigations. Shortest plant (97.73 cm), minimum branches per plant (7.16), siliquae per plant (117.50), seeds per silliqua (18.82) and seed yield (1.60 t/ha) was produced by no weedings. The combinations of irrigation and weeding had significant effect on almost all parameters. Highest yield of seed per hectare (2.88 t) was obtained from two weedings and two irrigations treatment combination (I2W2). The control combination of irrigation and weeding (I0W0) produced the lowest seed yield per hectare (1.28t)