Fe, Cu, Mn, And Zn Input and Availability in Calcareous Soils Amended with the Solid Phase of Pig Slurry

Abstract

A number of feed additives, such as As, Co, Cu, Fe, Mn, Zn, and Se are added to enhance pig growth and performance, but most of these micronutrients pass directly through the animal, which leads to elevated levels in the manure. An accumulation of P and trace elements, especially Zn and Cu, typically occurs with repeated swine manure application on soil. The potential environmental hazard associated with the loading of these elements in amended soils could actually be a positive fact in calcareous soils that usually show a high deficiency in available micronutrients. In this experiment, we analyzed the effect of the application of the solid phase of pig slurry to agricultural calcareous soils on the input and availability of Fe, Mn, Cu, and Zn. The experimental design was based on a field experiment using, as fertilizers two manures derived from the solid phase of pig slurry (composted, [C] and noncomposted [NC]). Two application rates were established to supply to the soils 300 and 450 kg N ha 21 , respectively, using a nonamended soil as a control. Soil samples were taken at 0, 14, 33, 53, 73, and 103 days. Available Fe, Cu, Mn, and Zn were extracted with DTPA (0.005 M DTPA, 0.01 N CaCl 2 , and 0.1 N TEA at pH 7) and determined by using atomic absorption spectrophotometry. A significant effect of manure application on available Fe, Cu, Mn, and Zn was observed. Zn and, to a lesser degree, Fe DTPA contents in amended soils were increased by composted and noncomposted pig manure, and Mn was increased by the noncomposted material.

Content and bioavailability of trace elements and nutrients in grape pomace

“…Similar Zn values were found in other winery wastes . In general, micronutrient content obtained in all grape pomace samples that were analyzed in this work were lower than those found in other organic fertilizers used for agricultural soils, as well as in domestic sewage sludges and other animal manures …”

Seasonal Changes in Nutrient Availability for Sulfur-Amended Everglades Soils Under Sugarcane

“…Soil management practices, such as fertilization and amendments, are commonly employed to enhance the nutrient supply and increase crop yields. Nonetheless, the status and behavior of nutrients in soil are difficult to predict (Moral et al, 2002;Moreno-Caselles et al, 2005;2096 R. Ye et al Herencia et al, 2008). Interactions among nutrients affect their availability to crops as an over-abundance of one nutrient may lead to a deficiency of another.…”

Micronutrient Concentration in Horticultural Crops Grown on a Soil Amended with the Solid Phase of Pig Slurry

“…In amended soils, Cu was present mostly in the organic matter fraction (Lai and Cheung 1999;Han et al 2000). In addition, Moreno-Caselles et al (2005) observed a strong correlation between the DTPA-extractable Cu fraction and the organic matter content in amended soils.…”

“…(2001) observed that the extractable Fe in swine manure -amended soils increased to a lesser degree than Mn and Zn. Moreno-Caselles et al (2005) observed that Fe in SPPSamended soils seemed to be in non-readily available forms after application. For Milan cabbage, the organic treatments based on the SPPS decreased the Fe concentration in the commercial part compared to control plants.…”