Nitrogen Release Characteristics from Biosolids-Derived Organomineral Fertilizers

Abstract

This study investigated the availability of nitrogen (N) following soil application of a novel biosolids-derived organomineral fertilizer

Field‐Scale Evaluation of Biosolids‐Derived Organomineral Fertilizers Applied to Winter Wheat in England

“…Enhanced uptake of soil K was expected in plots treated with relatively high N rates (e.g., ≥150 kg ha -1 N) and on urea-treated plots, because of the positive N × K interaction (Aulakh and Malhi, 2005) leading to a faster depletion of soil extractable K. A similar effect was to be expected in biosolidstreated soil because of the low content of K in biosolids granules, but to lesser extent than with urea owing to low N availability in biosolids (Antille et al, 2014c). Hence, monitoring of soil K status focused only on changes in soil extractable K in control plots and plots treated with 150 and 250 kg ha -1 N. It was hypothesized that addition of K as OMF would mitigate run-down of soil extractable K to a greater extent than urea or biosolids granules alone.…”

“…Under equal conditions of water and radiation (plus temperature), crop yield may be simplified to be a function of nutrients supply both from soil and applied fertilizer, particularly N. Nutritional stresses, such as suboptimal N supply, will affect survival of florets and consequently number of grains, but it will also affect radiation use efficiency due to reduced interception by crop biomass (Abbate et al, 1995). Differences in N supply between fertilizer types (Antille et al, 2014c) were in agreement with treatment effects on aboveground biomass and ears numbers (number of grains) thereby influencing grain yield. Fertilizer type and N rate effects on ears per m 2 were observed in all seasons, with the exception of 2006-2007 (Avenue field) in which treatment effects were largely offset by application of UAN in early spring.…”

Effects of Biosolids-Derived Organomineral Fertilizers, Urea, and Biosolids Granules on Crop and Soil Established with Ryegrass (Lolium perenne L.)

“…After 3 years, there was an increase of 14 mg L −1 in soil extractable P with application of biosolids (Table 3), which can have implications for an increase in soil P Index. This result was largely due to reduced P uptake in biosolids-treated grass that resulted from reduced N availability in the material, and low N:P ratio of biosolids, which leads to application of P in excess of crop requirement (Hogan, McHugh, and Morton 2001;Antille, Gallar-Redondo, and Godwin 2013;Antille, Sakrabani, and Godwin 2014a).…”

“…Subsequently, soil in the pot was packed to replicate (bulk) densities corresponding to those found in the field from which soils were taken. Bulk densities as determined in the field were 1.34 and 1.22 g cm −3 for sandy loam and clay loam soils, respectively (Antille, Sakrabani, and Godwin 2014a). Ryegrass seeds were spread on the soil surface at a rate equivalent to 4 g m −2 .…”

The Possibility of Organo-Mineral Fertilizer Production from Sewage Sludge

“…Meteorological factors and a type of soil also have a significant influence on nitrogen uptake. A high content of organic matter in the soil promotes a larger amount of soil mineral nitrogen [78]. It is important to understand the availability of nutrients in the soil treated with organic materials, which is necessary in terms of return applied nutrients and environmental protection.…”