S-pure Extensions of Locally Compact Abelian Groups

In this paper, we introduce the concept and study some properties of an s-pure subgroup and a s-pure extension in the category of locally compact abelian groups.Comment: 11 pages, accepted for publications in Hacettepe Journal of Mathematics and Statistic

Problems and Prospects of Poultry Industry in Bangladesh: An Analysis

The poultry industry has been successfully becoming a leading industry of Bangladesh. The primary objective of the study is to identify the various aspect relating the growth and sustainability of poultry industry in Bangladesh. Authors argued that strategic management in poultry sector requires complementing to achieve present Govt.’s vision of Digital Bangladesh 2021. Considering the importance of the country’s poultry industry in order to ensure the sustainable economic development it is now high time to step forward for the better accumulation of resources available from this industry. This industry proves various opportunities of increasing GDP growth rate plus equitable distribution through arranging food security as well as ensuring self-employment at a large scale as pointed out by the authors.

Irrigation management for Binadhan-8 and Binadhan-10 Boro rice for optimum yield and water productivity under normal soil

Alternate wetting and drying irrigation (AWD) has been reported to save water compared with continuous flooding (CF) in rice cultivation. However, the reported effects on yield varied greatly with soil type, cultivars, and detailed agrohydrological characterization is often lacking so that generalizations are difficult to make. This study quantified the impact of AWD on rice (Binadhan-8 and Binadhan-10) yield, water productivity and irrigation water savings. The irrigation treatments comprised of: Normal farmer’s practice (continuous ponding, 3-5 cm) [T1]; alternate wetting (irrigation by 5 cm) and drying (AWD) for 3 days after disappearance of ponded water (DOPW) [T2]; AWD for 5 days after DOPW [T3]; and a combination [T4].The grain yields varied from 3.9 to 4.4 t ha–1 with no significant difference in yield attributes (except 1000 grain wt.), grain yields and straw yields between AWD and CF. The productivity of water in AWDs was about 6 - 40% higher than that of CF, and the water savings in AWDs compared to CF were 22 – 35%. Alternate wetting and drying for 5 days can save substantial amount of irrigation water without sacrificing yield. This practice can be adopted for cultivating those cultivars for sustainable irrigation management.Keywords:  Boro rice, Water management, Water productivity, Alternate wetting and drying irrigation