Integrated nitrogen management in increasing yield and economic profitability of broccoli (Brassica oleracea var. italica L.)

The experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University during the period of November 2014 to April 2015 with a view to assess the combined effect of inorganic and organic sources of nitrogen on yield of broccoli and to develop a combined dose under integrated plant nutrition system (IPNS) for broccoli production. Four levels of Nitrogen (N) as 140, 160 and 180 kg N ha-1 as urea super granules (USG) and 180 kg N ha-1 as prilled urea (PU) as well as three different organic nitrogen sources (IPNS based) were considered to comprise 24 treatments combinations. The experiment was laid out in a randomized complete block design with three replications. USG along with organic manures showed better yield performance regarding yield attributes and yield compared to PU. The highest head yield (14.7 t ha-1) was found in USG-N160 kg/ha+ Oil Cake (OC)2t/ha followed by USG-N180kg/ha+ OC2t/ha (14.5 t ha-1). The maximum lateral head yield (6.612 t ha-1), marginal rate of return (132), and benefit cost ratio (4.00) were recorded in USG-N160kg/ha+ Poultry manure (PM)3t/ha. The treatment PU-N180+PM3 also showed better performance regarding yield (13.7 t ha-1), harvest index (27.1%) and benefit cost ratio (BCR) (3.84). Therefore, USG @160 kg N ha-1 + 3 t ha-1 poultry manure as adjusted N126P22K62S14Zn2B1Mo0.8 kg/ ha+3 t/ha PM or PU @180 kg N/ ha + 3 t/ ha poultry manure as adjusted N146P22K62S14Zn2B1Mo0.8 ha+3 t/ ha PM can be recommended for broccoli production in Grey Terrace Soil

Influence of soil acidity factors on Lotus rhizobia

SIGLEAvailable from British Library Document Supply Centre- DSC:DXN1852 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Preliminary Assessment of Quality of Water in Gazipur District, Bangladesh

Total 26 water samples were collected in BSMRAU campus and in Gazipur District where BSMRAU is situated, Bangladesh, in March （the late dry season） 2001. Samples were taken from surface water （river, pond, lake, canal and reservoir） and ground water. Ground water was found to be suitable to drinking or irrigation. Quality of surface water varied with sampling locations and water sources. Among surface-water samples, the concentration of NO_3^--N was highest for water taken from the Turag River （3.6 mg/L） followed by water from the Belai River （2.5mg/L）. The P concentration was also highest for water of the Turag River （0.34mg/L）. Discharge of municipal waste water from houses along the river, in addition to inflow of N fertilizer applied to agricultural fields, was proposed to the contamination of the Turag River. Progress of eutrophication or pollution in small rivers in Gazipur District may cause a serious impact on environment and human health in future. Detailed and comprehensive assessment is strongly requested