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An experiment was conducted at farmer's field of Dashpara village of Sylhet Sadar upazila during 2016-2017 to find out nutritional status of the leaves of four local and four exotic lines of sweet potato. d. The lines and variety were Local-1, Local-2, Local-5, Local-8, Exotic-1, Exotic-2, Exotic-3, Exotic-4 and BARI SP-4.The experiment was conducted by in a Randomized Complete Block Design. Crude protein, crude fat, crude fiber, total ash, moisture and carbohydrate were determined by proximate analysis whereas elemental nutrients, total sugar, starch, vitamin C, phenolic compounds and tannins were determined by the procedure outlined by Association of Analytical Chemists' (AOAC). Ninety days old fresh leaves were collected from the experimental field for chemical analysis. Results revealed that the highest percent of carbohydrate (by difference), crude protein, crude fat, total ash and energy were in Exotic-2 (65.47), Local-2 (26.59), Local-5 (3.63), BARI SP-4 (8.35) and Local-1 (370.4 Kcal 100 g -1 ), respectively. The highest percent of crude fiber, total sugar and starch were recorded in Local-8 (17.79), Local-2 (5.63) and , respectively. The Local-1 contained the highest amount of phenolic compounds and tannins while vitamin C was in Local-5 and Local-8. It was also observed that sweet potato leaves of Local-1, Local-5 and Local-8 contained appreciable levels of iron, zinc, calcium, magnesium, potassium and phosphorus. It can be concluded that the leaves of Local-1, Local-5, Local-8, Exotic-1 and Exotic-2 could be suitable for vegetables and can be included as supplement our daily nutrient requirements.

A laboratory experiment with three replicates was conducted at Plant Physiology Division research laboratory of Bangladesh Agricultural Research Institute (BARI) during November, 2015 to observe the seed quality of rapeseed-mustard by harvesting at different maturity stages of siliqua. Seeds were collected from siliqua of different rapeseed-mustard varieties and harvesting was made at different maturity stages based on their external color i.e., Green, pale yellow, Golden yellow and full maturity stage of siliqua. After harvesting of siliqua as per external color seeds were dried naturally about 48 hours and were packed in polythene and stored at laboratory environment for next season uses. Under laboratory condition seeds were evaluated in terms of moisture and germination percentage, speed of germination, root and shoot length, vigor index etc. Moisture content was found significantly at elevated level in respect of mustard varieties of BARI Sarisha-14 (V2), BARI Sarisha-6 (V3) and Tori-7 (V4).  The variety Tori-7 and BARI Sarisha-14 showed  the highest vigor index-II & vigor index-I, respectively. Among the harvesting stages, most of the parameters showed the highest standards in seeds harvesting at full maturity of siliqua stage (H4) followed by the golden yellow siliqua stage (H3) and pale yellow siliqua stages seeds (H2).Irrespective of rapeseed-mustard varieties seed collected from golden yellow and pale yellow siliqua stages could  be stored up to twelve month for next season without significant loss in terms of germination percentage and vigor followed by full maturity stages of siliqua harvested seeds (H4). Bangladesh Agron. J. 2019, 22(1): 121-130

Hybrid rice production can ensure to get more yields per unit land. The research work was carried out to evaluate the effect of number of seedling hill-1 and spacing on the growth and yield of hybrid rice line Bio-453. The experiment was laid out in a split-plot design with 3 replications at the field of Agronomy and Haor Agriculture Department of Sylhet Agricultural University, under the AEZ 20 in Kharif-II (Aman) season of 2013. Number of seedling hill-1 was assigned in the main plot and plant spacing in the sub-plot. Two levels of seedling hill-1 viz. NS1 (1 seedling hill-1) and NS2 (2 seedlings hill-1) and five levels of plant spacing viz. Sp1 (15 cm  X 15 cm), Sp2 (15 cm X 20 cm) and Sp3 (20 cm X 20 cm), Sp4 (20 cm X 25 cm) and Sp5 (20 cm X 30 cm) were the treatments. Number of seedling hill-1 and plant spacing showed significant effect in yield and yield contributing parameters except days to maturity, plant height, 1000-grain weight, total tillers hill-1, number of effective tillers hill-1, harvest index and grains panicle-1. Maximum grain yield (9.43 t ha-1), straw yield (16.27 t ha-1) and biological yield (25.70 t ha-1) were obtained from 1 seedling hill-1 (NS1) with the closest spacing 15 cm X 15 cm Therefore,  one seedling hill-1 with 15 cm distance for plant and row to row distance could  ensure maximum yield of hybrid rice line Bio-453. Bangladesh Agron. J. 2019, 22(1): 27-37