An experiment was conducted to study the effect of harvesting dates and variety on the yield and processing quality of potato tuber. Three processing potato varieties (BARI Alu-25, Asterix; BARI Alu-28, Lady Rosetta and BARI Alu-29, Courage) were used as test crops and they were harvested at different days after planting [80, 90, and 100 days after planting (DAP)]. The three processing potato varieties showed higher tuber yield of Grade A (9.12 t ha-1) and B (13.64 t ha-1). The highest tuber yield (Grade A+B) [29.62 t ha-1] and total tuber yield (35.97 t ha-1) was found in Courage at 90 and 100 DAP harvest, respectively. The variety Lady Rosetta attained the highest percent of processable tuber yield (86.8% of the total tuber yield), the maximum dry matter content (26.37%), specific gravity (1.102) at 90 DAP harvest and this variety also contained the highest mean starch content (111.75 mg g-1 FW) followed by Courage (111.17 mg g-1 FW) and Asterix (103.95 mg g-1 FW). Optimum dry matter content (24.07%), specific gravity (1.091), starch content (110.15 mg g-1 FW), processable tuber yield (26.62 t ha-1) and total tuber yield (32.76 t ha-1) was found at 90 DAP harvest and therefore, it could be mentioned as suitable harvesting date for processing purposes. Among the varieties, Lady Rosetta and Courage were found preferable potato varieties that could be used for processing of potato products. Bangladesh J. Agril. Res. 44(1): 179-193, March 2019

Integrated use of organic and inorganic fertilizers can improve crop productivity and sustain soil health and fertility. To gain insights into the response of green manure and chemical fertilizer, the present study was conducted to evaluate the growth, yield and proximate composition of aromatic rice varieties in Aman season at the research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from July to December 2014. The experiment was set up in split-plot design with three aromatic rice varieties in main plots and six fertilizer levels in subplots. ‘Raniselute’ variety produced the highest plant height, dry matter weight hill-1, straw yield (7.81 t ha-1), biological yield (9.05 t ha-1), ash (1.59%), and fat content (2.81%). ‘BRRI dhan34’ gave the maximum number of effective tillers hill-1 (12.74), panicle length (27.93 cm), number of filled grains panicle-1 (192.5), 1,000-grain weight (17.22 g), grain yield (2.26 t ha-1), harvest index (29.99%), and carbohydrate content (77.63%). Application of 80% recommended doses of NPKSZn + green manure 3.5 t ha-1 showed better performance for getting the maximum growth, yield components and yield compared to other treatments. Recommended doses of NPKSZn showed the highest carbohydrate content (77.63%) and lowest moisture (8.75%) and ash content (1.29%). The maximum fat content (3.07%) and minimum carbohydrate content (76.53%) was obtained from 60% recommended doses of NPKSZn + green manure 7 t ha-1. Application of 20 and 40% recommended doses of NPKSZn + green manure 14 and 10.5 t ha-1 produced the highest moisture content (10.43%) and lowest protein content (8.26%) in rice grain. Green manure 17.5 t ha-1 produced the highest ash (1.79%), protein content (9.06%) and lowest fat content (2.51%).

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Maintaining exportable standard of potato is the main bottleneck for the Bangladeshi potato growers and exporters. Bangladesh producing large amount of potato which may give much contribution in world market in future especially in European countries. But, yield and quality of potato is varying with some factors i.e., abiotic, biotic, varietal and nutritional, respectively. From these perspectives, the study was carried out under pot experiment at two consecutive years with due, that; applied chloride may influence the performance of tuber in major salt affected areas where the people wants to grow potato in their field. The experiment consisted of four salt application doses (N 0 = non-saline, N 1 = 5, N 2 = 15 and N 3 = 25g NaCl pot-1) and three varieties (V 1 = Granula, V 2 = Lady Rosetta and V 3 = Asterix). The pot was arranged following completely randomized design (CRD) with 3 replications. Result revealed that; yield, dry matter and specific gravity were decreased with the increasing of salinity levels. Results demonstrated that, non-saline condition of pot soil is favorable for getting the maximum return from studied parameters. Granula and Lady Rosetta performed the significant similar results in case of studied parameters. Although, Granula showed highest specific gravity at 5g NaCl plot-1 which was statistically similar to non-saline condition but, Granula exhibited the highest yield and dry matter under non-saline condition of pot soil. Similar trend was also found in case of Lady Rosetta whereas Asterix performed worst one under highest condition of soil salinity. In, conclusion, it may be said that; potato has sensitivity on salinity for its performances, so, the salt tolerance/salt avoidance varieties should be introduced/developed in our country and the further research should be carried out with how much amount of EC of salinity can be tolerated by exportable potato varieties.

Objective: This study investigated and compared the chemical composition, cholesterol content, fatty acid (FA), and amino acid (AA) profiles of doi and rasomalai made from buffalo milk. Materials and Methods: Bangladesh Agricultural University Dairy Farm, Mymensingh-2202, Bangladesh was the source of raw buffalo milk. Then, doi and rasomalai were produced and analyzed. Prior to the production of doi and rasomalai, the gross composition and AAs of milk were evaluated. Milk and dairy products were evaluated for gross composition using an automated milk analyzer and the Association of Agricultural Chemists techniques, respectively. At the Bangladesh Council for Scientific and Industrial Research, Dhaka, Bangladesh, the cholesterol, FA, and AA levels of doi and rasomalai were determined. Additionally, atherogenic and thrombogenic indices were determined using established equations. Results: The results indicated that the majority of the proximate components were significantly greater ( p < 0.05) in rasomalai than in doi. Rasomalai had 3.64 mg more cholesterol ( p > 0.05) than doi. The FA profile was identical across doi and rasomalai with the exception of oleic acid (C18:1 cis -9), which was 1.50% greater ( p < 0.05) in rasomalai. The atherogenicity index was found to be statistically higher in doi than in rasomalai ( p > 0.05). Similarly, the thrombogenic index was found to be significantly higher ( p > 0.05) in doi (1.98) when compared to the rasomalai (1.92). The concentrations of all AAs were found to be quantitatively higher in doi than in rasomalai ( p > 0.05). Conclusion: The conclusion is that buffalo milk rasomalai appears to have a higher nutritional density than buffalo milk doi.