Year 2005
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Item PERFORMANCE OF RAPESEED (Brassica campestris) LINE SAU-C-F7 TO DIFFERENT ROW SPACING AND IRRIGATION LEVEL(DEPARTMENT OF AGRONOMY, 2005-12) HASANUZZAMAN, MIRZAAn experiment was conducted at the Agronomic field of Shcr-e-Bangla Agricultural University, Dhaka-1207 on silly clay loam soil during the period from October, 2004 to January, 2005 to find out the optimum row spacing and irrigation level for the rapeseed line SAU-C-F7. The experiment was carried out with three row spacings (20 cm, 30 cm and 40 cm) and 3 levels of irrigation (no irrigation. one irrigation at 30 DAS and two irrigations at 30 and 60 DAS). The experiment was laid OUI in split-plot design with four replications. Row spacing and irrigation level significantly influenced the growth, development and yield of the rapeseed line. Among the row spacings. the widest spacing (40 cm) influenced plant to have maximum above ground fresh weight, dry matter and its partition, umber of siliquae, number of seeds siliqua-1, number of seeds, number of branches, 1000-seed weight, seed yield and also seed yield ha-1. But. the maximum plant height and number of plant m-2 was round with closer row spacing (20 cm). Maximum seed yield plant-1at 40 cm row spacing of was 29.34% and 1.3% higher than 20 cm row spacing (St) and 30 cm row spacing (S2),respectively. Two irrigation - one at 30 DAS (pre-flowering stage) and another at 60 DAS (siliquae developmental stage) increased economic yield with higher values of harvest index as the yield attributes like branches plant-1, siliquae plant-1, seeds siliqua-1. Seeds plant-1, 1000-seed weight. The number of plants m-2 was found similar under different irrigation level. The increased seed yield plant-1 with two irrigations was 364.6 % and 84.2 % higher than no irrigation and one irrigation is respectively. In most of the cases the wider row spacing coupled with two irrigations were found to be influenced for better growth and yield of plant. The highest seed yield per plant was found with the interaction of two irrigations and 40 cm row spacing. This was achieved due to maximum number of branches plant-1, number or siliquae plant-1 and 1000-seed weight. The yield attributes were supported with appreciable production of dry matter and its partition towards different parts. Number of branches plant--1, number of siliquae plant-1, number of seeds siliqua-1, number of seed plant-1, 1000•seed weight had a significant correlation with seed yield plant-1 with the r values of 0.95**, 0.97**, 0.67*, 0.96** and 0.94**. They were also positively correlated with each other.Item PHYSIOLOGICAL AND BIOCHEMICAL STUDIES ON THE QUALITY OF KENAF (Habiscus can,zahinus L) SEED AS AFFECTED BY STORAGE PERIOD, TYPE OF CONTAINER AND GENOTYPE(DEPARTMENT OF AGRONOMY, 2005) AKTHER, SHAMIMAThis study aimed to determine the storage performance of kenaf seeds and type of container used during storage. Study also aimed to Find out the probable causes of seed deterioration. The experiments were conducted from December 2004 to June 2005. Results revealed that tin container was found less permeable to moisture transmission compared with jute sack and tin container also retained higher seed quality attributes throughout the storage period. Results from the experiments on biochemical basis of seed deterioration showed that no appreciable difference of sugar content was detected in fresh seeds and seeds those were stored in airtight tin container. But significant increase of sugar content in all genotype was recorded when seeds were stored in jute sack. Again after storage in jute sack, signiFicant decrease of protein content was observed in all genotype but no appreciable change was recorded in seeds stored in tin containerItem YIELD AND QUALITY OF JUTE SEED (0-72) AS AFFECTED BY DIFFERENT DATES AND METHODS OF SOWING IN THE LATE SEASON(DEPARTMENT OF AGRONOMY, 2005) ALOM, MD. FERDAUSULAn experiment was conducted at experimental field of Bangladesh Jute Research Institute Regional Station. Rangpur during July 2004 to January 2005. Seed quality components were tested in the Laboratory of' the Agronomy Division of WRI. Dhaka. The objectives were to find out the appropriate sowing dale. sowing method and interaction effect of sowing date and sowing method on the yield and quality of jute seed in the late season. The experiment consisted of five sowing dates viz.. July IS. July 30, Auuust 15, August 30 and September 15: two sowing methods viz., line and broadcast with a variety 0-72. The experiment was laid out in randomized complete block design with four replications. Results showed that sowing date significantly affected seed yield and yield components. The higher seed yield (1167.20 kg hi') obtained from the crops sown on August 15 compared to the crops of other sowing dates. The seed produced from August IS sowing also gave better pertorinanee regarding seed quality express as 1000 seed weight (2.16 g). germination percentage (96.00%). vigour index (67.39) and moisture content (10.19%). There was signilleant effect found in seed yield clue to sowing methods. l3ttt sowing methods signilicaiitly afiected the seed quality components. The seed 110 ,-, produced from line sowing gave die highest 1000 seed weight (2.09 g), germination percentage (93.30%), and lowest moisture content (10.43%) over broadcast sowing where vigour index was unaiTheted. The seed yield was significantly atiëeted by the interaction ol sowing date and sowing method. The highest seed yield (11 S7.70 kg ha'') obtained from the crops sown on August 15 in line sowing method. The vigour index of jute seed was significantly affected due to interaction effect of sowing date and sowing method where other quality components such as 1000 seed weight, germination percentage and moisture content remained ttnaffeeted. The seed obtained fran, the crops sown on August IS gave the higher valtie of vigour index (66.89 and 67.89 for line and broadcast sowing respectively) in both the sowing methods. The crops sown on August 15. in any ol' the sowing methods either line sowing or broadcast sowing produced higher yield of quality seed.Item EFFECT OF SOWING DATE ON YIELD AND YIELD COMPONENTS OF RAPESEED VARIETIES(DEPARTMENT OF AGRONOMY, 2005) HOSSEN, MD. AFZALThe study was carried out at the Field Laboratory of Sher-e- Bangla Agricultural University farm, Dhaka during October 2004 to February 2005 to evaluate the effect of sowing date and variety on yield and yield components of rapeseed (Brass/ca campesiris and Brassica napus). The treatments comprised of four sowing dates at 15-days interval on viz. October 20, November 4, November 19 and December 4 and three varieties viz. Improved Tori-7, BARI Sarisha-8 and BARI Sarisha-9. The experiment was laid out in a Randomized Complete Block Design. The results showed that BARI Sarisha-8 performed best by producing 52.4 % and 132.9 % higher yield than BARI Sarisha-9 and Improved Tori-7, respectively. This variety (BARI Sarisha-8) also showed higher siliquae planf', seeds siIiqua, siliqua length. 1000 seed weight, shelling percentage, stover yield, biological yield and harvest index. In case of sowing date, grain yield reduced gradually with the advancement of delay in sowing. October 20 sowing gave maximum grain yield (1422 kg ha) and that of lowest (437.2 kg ha S ') was observed in December 4. BARI Sarisha-8 on October 20 sowing produced the significantly highest grain yield (1865 kg hi') and the lowest (130 kg ha") was found in Improved Tori-7 on December 4 sowing. The variety BARI Sarisha-8 and October 20 sowing performed best in respect of grain yield as well as other studied parameters.Item RESPONSE OF NITROGEN AND SULPHUR ON TUE YIELD OF RAPESEED (Brassica campestris) LINE SAU-C-F7(DEPARTMENT OF AGRONOMY, 2005) ISLAM, MD. SUOFIKULAn experiment was conducted at Sher-e-Bangla Agi icultural University Farm during the Rabi season 2004-2005 (October to February) to examine the response of nitrogen and sulphur on the growth, yield attributes and yield of newly developed rapeseed (Brass/ca campesins) line SAU-C-F,. The experiment was laid out in split plot design with 3 replications. There were four different levels of nitrogen viz. 0, 40, 80 and 120 kg/ha and four levels of sulphur viz. 0, 30, 60 and 90 kg/ha. Nitrogen and sulphur significantly influenced the growth, yield and yield attributers of rapeseed. Plant height, dry matter, crop growth rate, branches per plant, length of main inflorescence, number of siliquae in the main inflorescence, siliquae per plant, seed yield, stover yield, harvest index and oil yield were significantly influenced by both nitrogen and sulphur. Oil content was only influenced by S application. The results revealed that nitrogen at the rate of 120 kg/ha showed the best performance in all respect. The highest seed yield (2.37 tIha) was obtained with 120 kg N/ha while control treatment gave the lowest yield (0.66 t/ha). It was also observed that sulphur application at the rate of 30 kg/ha gave the best results while control treatments showed the lowest results. Application of sulphur at the rate of 30 kg/ha produced the maximum seed yield 0.66 tlha). The interaction effect of nitrogen and sulphur revealed that 120 kg N in combination with 30 kg S/ha showed the best performance in most of the cases whereas, the combination affect of control treatments showed the worst performance.Item INFLUENCE OF NITROGEN AND NAPHTHALENE ACETIC ACID ON THE YIELD OF SUMMER MUNGBEAN (Vigna radiata (L.)Wilezek) cv. BARN mung-3(DEPARTMENT OF AGRONOMY, 2005) MD. ROKONUZZAMANic experiment was cathed out in experimental field of the Department of Agronomy, Sher-e-Bangla Agricultuml University. Dhaka to investigate the effect of nitrogen and naphthalene acetic acid (NAA) on growth, yield contributing characters and yield of summer mungbean (cv. BAR! mung-3) during summer season of 2005. Four levels of nitrogen viz, 0, 20, 40 and 60kg N ha"and three concentrations of NAA viz. 0, 25 and 50 ppm were used as experimental variables. The experiment was laid out in randomized complete block design with three replications. Results revealed that nitrogen and NAA interacted significantly on most of the growth; yield parameters and yield of mungbean. Plant height, number of leaves, total dry weight of plant, number of flowers, number of pods per plant, 1000 seed weight and seed yield increased significantly by 20 kg N ha4 in combination with 25 ppm of NAA.