Year 2015

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    ROLE OF MODIFIED CHITOSAN ON RICE (BRRI dhan29) CULTIVATION IN SALINE SOIL
    (Department of Soil Science, 2015-12) SHITHY, SAMIHA MARZAN
    A pot experiment was conducted in the net house of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, during the period from December 2015 to April 2016 to study the role of modified chitosan on rice (BRRI dhan29) cultivation in saline soil. BRRI dhan29 was used as the test crop in this experiment. The experiment consists of 2 factors i.e. salinity and modified chitosan. Different doses of modified chitosan (C 0 -0 g modified chitosan/pot, C -20 g modified chitosan/pot and C 2 -40 g modified chitosan/pot). Different levels of salinity were (S - normal soil, S 1 - 4dSm -1 , S 2 - 8dsm -1 and S 3 - 12dsm -1 ). The experiments was laid out in randomized complete block design (RCBD) with 3 replications. There were 12 treatment combinations. Results revealed that salinity had significant effect on the yield and yield parameters. The highest value of effective tillers/hill, plant height, panicle length, number of filled grain/panicle, 1000 grain weight, grain yield and straw yield were observed when the level of salinity was S (normal soil) and the lowest value was observed when the level of salinity was S 3 1 (12 dsm ). The Yield contributing characters and yields were significantly affected by application of modified chitosan. The highest effective tillers/hill (23.91), plant height (60.24 cm), panicle length (19.37cm), 1000 grain wt. (14.83g), grain yield (38.08g) and straw yield (47.08g) were found from C (20 g modified chitosan/pot). On the other hand in most cases lowest values were obtained from C 1 (40 g modified chitosan/pot). The highest values of effective tillers/hill (49.00), plant height (78.687), panicle length (27.87), 1000 seed wt.(21.33), and grain yield (85.00), recorded from (S 2 0 C - normal soil + 20 g modified chitosan/pot). The lowest values were observed from (S 3 1 C 2 -12dsm -1 + 40 g modified chitosan/pot). Our results concluded that application of modified chitosan (20 g modified chitosan/pot) could play significant role to increase the grain yield of rice and could improve the salt tolerance in rice. -1 0 0
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    EFFECT OF SOIL AND FOLIAR APPLICATION OF ZINC ON YIELD OF WHEAT GROWN UNDER WATER STRESS CONDITION
    (Department of Soil Science, 2015-12) AKTAR, SURVI
    An experiment was carried out to know the effect of irrigation, soil and foliar application of zinc on the growth and yield contributing characteristics of wheat. In this experiment, irrigation viz T - Regular irrigation, T 2 - Skipping irrigation at CRI stage, T - Skipping irrigation at booting stage, T 4 3 - Skipping irrigation at flowering and heading stage and foliar spray of zinc viz Zn 0 - Control, Zn 1 – 0.02%, Zn 2 1 – 0.04% and Zn – 2.5kg Zn/ha into soil were studied. Data of field experiment were recorded on plant height, spike length, number of grains spike , number of spikelet spike -1 , 1000 grain-weight and total yield of wheat. Results revealed that individual effect of irrigation was significant on all selected parameters. The effect of zinc application was found significant while the higher dose of foliar application of zinc increased the yield of wheat compared with the application of zinc in soil. Results showed that the highest number of grains per spike (48.20) was achieved from both T and T 4 Zn 2 treatments while T 2 Zn produced the lowest number of grains spike -1 0 (36.12). It was found that the highest 1000-grain weight (54.10g) was exerted by T 4 Zn treatment and the lowest yield of 1000-grain weight (46.67g) was produced from T 2 2 Zn treatment. However, the highest yield of wheat (3.82 t/ha) was exerted by T 0 4 Zn treatment, whereas the lowest yield (1.80t/ha) was found for T 2 Zn 0 2 treatment. From this study, it was revealed that foliar application of zinc was more effective than the application in soil. In addition, skipping irrigation at flowering and heading stage with foliar application of zinc (0.04%) could be recommended for higher yield of wheat. -1 1 Zn 3 2
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    EFFECT OF FOLIAR APPLICATION OF ZINC ON THE GROWTH AND DEVELOPMENT OF WHEAT
    (Department of Soil Science, 2015-12) AKTER, MOST. NAZNIN
    The experiment was conducted during the period from November 2014 to March 2015 in rabi season at the experimental field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka to find out the effect of foliar application of zinc on the growth and development of wheat. The seeds of wheat variety ‘BARI Gom 26’ were used as test crop. The experiment comprised of the following treatments- T : Control (no zinc fertilizer), T 1 : Spraying of 0.02% Zn solution once in growing season, T : Spraying 0f 0.02% Zn solution twice in growing season, T : Spraying of 0.04% Zn solution once in growing season, T 4 3 : Spraying of 0.04% Zn solution twice in growing season, T 5 : Spraying of 0.06% Zn solution once in growing season, T : Spraying of 0.06% Zn solution twice in growing season and T : Application of Zn in the soil as per recommended dose (2.5 kg Zn/ha). The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Statistically significant variation was observed for different parameters that were recorded. At 40, 50, 60, 70 DAS and harvest, the tallest plants (44.96, 64.73, 79.82, 90.17 and 97.01 cm, respectively) were recorded from T 6 7 , while the shortest plant (39.27, 53.87, 69.26, 76.42 and 81.17 cm, respectively) was observed from T . The maximum number of effective tillers plants -1 0 (5.13), maximum number of filled grains spike (46.07), highest grain yield (3.97 t ha -1 ) and highest straw yield (5.10 t ha -1 ) was attained from T 6 , while the minimum number of effective tillers plants -1 (3.87), minimum number of filled grains spike -1 (40.43), lowest grain yield (3.08 t ha -1 ) lowest straw yield (4.44 t ha -1 ) and was observed from T .But incase of effective tiller, length of flag leaf,spikelet/spike,filled grain,yield of grain under T 0 treatment were statistically identical with T 3 , T 4 ,T 5 treatment.So we can choose T 6 for yield contributing characters and yield attributes. The maximum uptake of N (27.02 kg ha 3 ), P (10.62 kg ha -1 ) and K (14.07 kg ha -1 ) by wheat grain were found from T but the maximum uptake of Zn (0.214 kg ha -1 ) from T 7, 5 while the minimum values of uptake of N (19.40 kg ha -1 ), P (7.66 kg ha -1 ), K (10.29 kg ha -1 ) and Zn (0.073 kg ha -1 ) were found from T .The highest amount of available Zn of post harvest soil (3.53 ppm) was found from T 0 , whereas the lowest available Zn in post harvest soil (2.01 ppm) was observed from T 7 . Among the different treatments of foliar spray of Zn, spraying of 0.06% Zn solution twice in growing season induced superior growth, yield contributing characters and yield of wheat. 0 6 -1 0 -1 2
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    EFFECT OF FOLIAR APPLICATION OF SALICYLIC ACID ON YIELD AND YIELD CONTRIBUTING CHARACTERS OF BRRI hybrid dhan3
    (Department of Soil Science, 2015-12) KHATUN, MOST. MOSLAMA
    The experiment was conducted in the Farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from November 2014 - April 2015 to study the effect of different levels of salicylic acid (SA) on growth and yield of BRRI hybrid dhan3.The experiment included six levels of SA viz. T 1 = 0, T 2 = 200, T 3 = 400, T 4 = 600, T = 800 and T = 1000 µM. The experiment was laid out in a randomized complete block design with three replications. The results revealed that, Lower dose of SA has a positive role on plant height of rice and higher doses up to 1000 µM have negative effect. The highest oven dry matter weight (2.7 t/ha) was found in T 6 treatment having foliar spray of SA at 400 µM and the lowest (2.0 t/ha) was found in, T 3 . The highest number of effective tillers per hill (14) was found in the treatment T 6 5 due to the application of 1000 µM SA and the highest 1000 grain weight (34.8g) was found with the same treatment. The highest number of grain per panicle (156) was found in the T treatment having foliar application of 1000 µM SA and it was statistically similar with the treatments T 6 4 and T . The application of different levels of SA had a significant effect on number of stem borer affected plants. The lowest number of affected panicle per plot (3) was found in the treatment T 5 . The maximum grain yield was found in the treatment T having 1000 µM SA and it was statistically identical with the treatment T 5 6 having 800 µM SA. On the other hand, minimum grain yield was found in the control treatment T which was similar to the treatments T 2 and T 3 1 having 200 µM and 400 µM SA, respectively. So, it can be concluded that salicylic acid may be applied as foliar application to rice crops for better growth and yield. 5 6
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    EFFECT OF NITROGEN AND MOLYBDENUM ON THE GROWTH AND YIELD OF BARI BUSH BEAN-2
    (Department of Soil Science, 2015-12) HASAN, MD. ROCKYBUL
    A field experiment was carried out in Modhupur Tract (AEZ- 28) at research field of Sher-e-Bangla Agricultural University, Dhaka, during the Rabi season from November 2014 to March 2015 to study the effect of Nitrogen and Molybdenum on the growth and yield of bush bean (Phaseolus vulgares L.) cv. BARI Jhar Sheem-2. The treatments consisted of 4 (four) levels of N (0, 60, 80, 100 kg ha designated as N 0.6 kg ha -1 0 , N 60 , N 80 , N 100 ) designated as Mo respectively and 3 (three) levels of Mo (0, 0.3 and 0 , Mo 0.3 , and Mo 0.6 respectively. Urea and ammonium molybdate were used as the sources of nitrogen and molybdenum respectively. There was a positive impact on number of effective plant height number of branches plant plot -1 -1 , number of green pod plant -1 , pod length, pod yield , green pod weight, and stover yield with increasing the rate of nitrogen and molybdenum, all these parameters increased up to N green pod yield (13.40 t ha (13.07 t ha -1 -1 ) was obtained from N )) was obtained from Mo was attained in N were recorded in N 100 Mo 80 0.6 Mo 0.6 100 100 and Mo 0.6 . The highest . The highest green pod yield . The maximum pod yield (14.50 t ha treatment. The highest N, P, K and S contents in plant 0.3 found in control treatment NoMo. and N 100 Mo 0.6 treatment and the lowest result was -1 -1 -1 ) , )
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    PERFORMANCE OF BRRI dhan49 AS INFLUENCED BY MODIFIED CHITOSAN IN THE SEEDBED AND IN THE MAIN FIELD
    (Department of Soil Science, 2015-12) AHMED, FAYSAL
    A field experiment was conducted at the research farm of Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh during Aman season (July to December, 2015) to assess the effect of modified chitosan on morphological, chemical, reproductive, and yield attributes, and yield in rice cv. BRRI dhan49. The experiment was laid out in a completely randomized block design having four treatments with three replications, T CHT at 0 t ha CHT at 0.5 t ha 1 -1 : seedbed applied modified CHT at 0 g/m ; T 2 -1 : seedbed applied modified CHT at 0 g/m ; T modified CHT at 0 t ha 3 2 : seedbed applied modified CHT at 250 g/m -1 ; T applied modified CHT at 0.5 t ha 4 + field applied modified 2 + field applied modified : seedbed applied modified CHT at 250 g/m -1 2 + field applied . Application of modified chitosan improved quality of the seedlings and increased plant height, effective tillers hill panicle/m 2 , panicle length, grain yield and straw yield over control. Most of the morphological, yield attributes and grain yield were increased with increasing the use of modified chitosan in different ways (seedbed applied method and field applied method). Maximum grain yield was observed in T4 treatment having modified chitosan applications in both ways. Our results indicate that primary tillers become earlier, effective tillers become higher, flowering and maturity time become earlier resulting more yield. Our results also indicate that seedbed applied method of -1 2 + field , number of modified chitosan would be more effective than field applied method. These results might be due some growth promoting hormones (especially GA3, Auxin etc.) could be realized in soil that induced the seedlings growth and early-flowering some genes (ELF1, ELF2, ELF3) could be induced by the application of modified chitosan in soil.
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    Performance of Modified Chitosan Treated Tomato (Lycopersicon esculentum) Seedlings on the Growth and Yield of Tomato
    (Department of Soil Science, 2015-12) RAHMAN, MD. ARIFUR
    A pot experiment was conducted at the net-house of Sher-e-Bangla Agricultural University, Dhaka, during the period from October 2015 to March 2016 to investigate the effect of modified chitosan on seedling morphological characters, growth and reproductive characters and yield performance of tomato cv. BARI tomato-15. The experiment was designed with five treatments using four level of modified chitosan in the seedbed soil (10 kg of soils per pot). The used treatments were T 1 modified chitosan/pot), T 4 (control), T 2 (50 g modified chitosan/pot), T 3 (150 g modified chitosan/pot) and T 5 (100 g (200 g modified chitosan/pot). The experiment was laid out in earthen pots arranged in a randomized complete block design (RCBD) with three replications. Application of modified chitosan increased seedling height, fresh and dry weight of seedlings, soil pH, organic carbon (%), organic matter (%), number of flowers/ plant, fruits/plant, fruit size and fruit yield over control. Most of the morpho-physiological, reproductive and yield attributes were increased with increasing doses of modified chitosan, whereas control plants showed the lowest value of the above parameters. Most of the morphological, growth and reproductive attributes were recorded maximum in the T 4 and the highest fruit yield was recorded in the T 5 might be due to the morpho-physiological changes and increased number of fruits/plant. Therefore, application of modified chitosan at 150g or 200g/pot (10 kg soils) could be used for getting quality seedling, leading to maximizing the tomato fruit yield. treatments. It
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    EFFECT OF TREATED SLUDGE AND CHITOSAN ON GROWTH AND YIELD OF NERICA RICE 10 IN AUS SEASON
    (Department of Soil Science, 2015-12) HALDER, SUKANTO
    A field experiment was conducted to assess the effect of treated sludge and chitosan on the growth and yield of NERICA 10 rice at the research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during Aus season from urea and then recommended dose of P, K, S, Zn and foliar spray of chitosan(T Treatment) -1 from urea with recommended dose of P, K, S, Zn and foliar spray of chitosan Treatment) 8 Treatment) 2 1 Treatment Treatment) 4 3 Treatment 6 5 Treatment) 7 Treatment) -1 from urea with recommended dose of P, K, S, Zn and foliar spray of chitosan Treatment)wasnot similar to Control Treatment), 100% recommended N i.e.100 kg nitrogen / ha 1 0 Treatment), 75 kg N from urea with 25kg N substituted by sludge Treatment) and 25 kg N from urea with 75 kg N substituted by sludge 4 2 Treatment). In post harvest soils, the contents of total nitrogen, available phosphorus, exchangeable potassium and available sulphur and zinc increased due to application of treated sludge and chitosan compared to initial soil. In the contrary, soil pH value increased slightly as compared to that of initial soil. The overall results indicate that 50kg Nha -1 from urea with recommended dose of P, K, S, Zn and foliar spray of chitosan Treatment) soil fertility,
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    EFFECT OF LIMING AND PHOSPHORUS ON GROWTH AND YIELD OF TOMATO
    (Department of Soil Science, 2015-12) MASUM, MD. ARIFUL HAQUE
    The present experiment was carried out at the Farm of Sher-e-Bangla Agricultural University, Dhaka-1207 to find out the effect of liming and phosphorus on growth and yield of tomato during the pried from October 2014 to April, 2015. The experiment consisted of four level of phosphorus viz. 0, 20, 40, 60 kg P ha -1 and three levels of dolomite (viz. 0, 1, 1.5 t ha ) as liming material. The two factors experiment was set up in Randomized Complete Block Design (RCBD) with three replications. In total, there were 12 treatment combinations in this study. A unit plot was 2m×2m and the treatments were distributed randomly in each block. Data on growth and yield parameters were recorded and analyzed statistically. Results showed that different levels of phosphorus and liming significantly differed in all growth and yield contributing characters. The highest plant height (85.26 cm), number of primary branches (13.65), fruit length (6.82 cm) and yield of fruit (66.29 t ha ) was obtained from 60 kg P ha -1 treatment. The maximum plant height (85.02 cm), number of primary branches (12.40), fruit length (6.77 cm) and yield of fruit (55.18 t ha -1 ) was recorded from 1.5 ton dolomite ha -1 . The highest plant height (91.24 cm), number of primary branches (15.03), fruit length (8.20 cm) and yield of fruit (82.55 t ha 1 + 1.5 t ha -1 -1 -1 ) was recorded with the treatment combination of 60 kg P ha of dolomite . On the other hand, the lowest yield of fruit (24.4 t ha ) and for all cases lowest result was found in no phosphorus and no liming. The highest N, P and K concentration in soil was recorded from 60 kg P ha treatment. The highest N, P and K concentration in soil was recorded from 1.5 ton dolomite ha -1 treatment. The highest N, P and K concentration in soil was recorded from 60 kg P ha -1 with 1.5 ton dolomite ha -1 treatment. -1 -1 - -1
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    EFFECT OF MODIFIED CHITOSAN ON GROWTH AND YIELD OF RICE (BRRI dhan62)
    (Department of Soil Science, 2015-12) MUNSHI, MOSTARAK HOSSAIN
    An experiment was carried out at the research field of the Department of Soil science, of Sher-e-Bangla Agricultural University, Dhaka-1207 during the period from July to December 2015 to investigate the effect of modified chitosan on growth, yield contributing characters and yield of rice cv. BRRI dhan62. Single factor experiment was laid out in a randomized complete block design (RCBD) with three replications. The experiment comprised of five levels of modified chitosan and the treatments were T 1 (0.5 t/ha modified chitosan), T 2 (1.0 t/ha modified chitosan), T 3 (2.0 t/ha modified chitosan), T 4 (4.0 t/ha modified chitosan) and T 5 (without modified chitosan or control). Different doses of modified chitosan was applied and mixed in the soil before transplanting of rice seedlings. Soil application of modified chitosan was significant on all parameters studied except plant height, panicle length, total number of grains/panicle, filled grains/panicle, unfilled grains/panicle, but the grain number increased with the increasing doses of modified chitosan among the treatments compare to the control. The experimental results revealed that 4.0 t/ha modified chitosan (T 4 ) produced highest grain yield (6.15 t/ha), maximum number of tillers/hill (17.85), highest straw yield (6.80 t/ha), highest biological yield (12.95 t/ha), maximum 1000-grain weight (26.90), highest value of pH (6.23), highest organic carbon content (0.97%), and highest organic matter content (1.67%). And the lowest values of these parameters were observed in the control treatment having without modified chitosan application. From the results it is concluded that almost all of growth parameters, yield and yield contributing characters and chemical properties of soil were improved due to using modified chitosan in soils compared to the control. These results suggest that modified chitosan could be used to increase the rice grain yield with sustainable soil health.