Natural and synthetic steroidal hormones can be carried to agricultural soil through fertilization with municipal biosolids, livestock manure, or poultry manure. The persistence and pathways of dissipation of [4-(14)C]-testosterone and of [4-(14)C]-17beta-estradiol in organic-amended soils were investigated using laboratory microcosms. Testosterone dissipation was investigated over a range of a...

In sustainable agricultural systems, recycling of nutrients is a major component of nutrient management. We conducted an experiment in Abakaliki South Eastern Nigeria in 2007 to investigate the effects of organic amendments (poultry droppings (PD), burnt rice husk dust, (BRHD), Unburnt rice husk dust (UBRHD) and inorganic fertilizer (NPK) on soil properties and their residual effect tested in 2...

Two field experiments were conducted at domar and sadar upzilla of Nilphamari district to find out an effective control measure against rhizome rot (Pythium aphanidermatam) disease of ginger (Zingiber officinale Rose). Each experiment consisted of nine treatments, where three fungicides (Ridomil, Metataf and Secure), three organic amendments (poultry refuse, mustard oilcake and saw dust burning...

Column-leaching and pilot-scale experiments were conducted to evaluate the use of biosolids (sewage sludges) to control the mobilization of metals from contaminated soils with smelting slags. The pilot-scale experiments using amended soils showed that Cu, Pb and Sb were retained, decreasing their concentrations from 250 g/L, 80 g/L and 6 g/L, respectively in the leachates of contaminated soi...

Organic farming/products are becoming very necessary in today’s world to control ecosystem health and to impart related human health benefits, world over there is growing demand for organic produce. A field experiment was conducted at the research farm of Kilpest India Ltd., Bhopal, during 2009 on rice using BGA Chlorella pyrenoidosa and Nostoc muscorum and biological hydrolysate of Soybean .Th...

Sweet potato (Ipomoea batatas L.) is a tropical tuber crop, primarily cultivated by small landholders in Asia. The crop is a versatile component of the agricultural systems; it has the capacity to produce a significant quantity of carbohydrates, and the protein and vitamin content enhances its value. Thus, it is cultivated in both wet and dry seasons, although yields are generally lower under d...

An evaluation of flow-injection analysis with chemiluminescence detection (FIA-CL) to quantify Fe(2+) ((aq)) in freshwaters was performed. Iron-coordinating and/or iron-reducing compounds, dissolved organic matter (DOM), and samples from two natural water systems were used to amend standard solutions of Fe(2+) ((aq)). Slopes of the response curves from ferrous iron standards (1 - 100 nM) were c...