Effects of organic amendments on sand dune fixation

Abstract

Background Poor physical and chemical properties of sand dune soil are the main constrains in afforestation of sand dune in desertified area. The aim of this study is to improve the physical and chemical properties of dune soil in Elrawakeeb Dry Land Station using organic wastes as a fertilizer source and amendments, for sustainable sand dune stabilization program. Salvadora persica L. seedlings were transplanted in a 2 m 9 2 m plots and treated with: sawdust (SW), chicken manure (CH), chicken manure with sawdust (CH ? SW), sawdust with inorganic fertilizer (SW ? IF), sewage sludge (SS), sewage sludge with sawdust (SS ? SW), and control (C). The treatments were arranged in a randomized complete block design with four replicates. The soil chemical properties were determined from soil samples collected from the fixed sand dune (0-20 cm depth) in the second year after application. Results Application of organic amendments significantly (P = 0.001) increased soil organic carbon by 224 %, available P by 139.9 %, total nitrogen by 142.9 %, and mineral nitrogen by 83.5 % and decreased soil pH by 5.6 %. Conclusions Incorporation of organic waste in desertified sandy dune soils increased its nutrient content and hence sustained biological fixation of sand dunes.

Comparative Effect of Different Combinations of Animal Manures and Humic acid on selected soil biochemical properties

“…That could be explained by the fact that cow manure is a source of organic carbon. Similar results were obtained by [22][23], who showed an increase in soil organic carbon with increased cow manure application.…”

Germination of several wheat cultivars in desert soil after amendment with raw and digested poultry manure with and without combination with mineral fertilizer

“…Therefore, replacing chemical fertilizers with organic fertilizers or combine it with organic fertilizers is required to improve soil fertility. Numerous studies have reported that the application of organic fertilizers to soils of arid and semiarid regions enhances significantly soil fertility through improving soil properties compare to application of mineral fertilizers (Diacono and Montemurro 2010;Elhadi et al 2016;Elnesairy et al 2016;Hati et al 2006). Organic fertilizers such as animal manures have a considerable amount of nutrients in organic form and hence is not immediately available to the plant until decomposition by heterotrophic soil microorganisms occurs (Ladd and Jackson 1982).…”

Efecto de la aplicación de aserrín de algarrobo sobre las propiedades de un suelo en la provincia del Chaco

“…El tiempo para alcanzar la estabilización fue prolongado, pudiendo atribuirse a la alta relación C/N de los residuos utilizados. Elhadi et al, 2016 observaron que, dependiendo del material original agregado al suelo y la cantidad del mismo, la dinámica del contenido de CO varía, aumentando inicialmente para después declinar hasta volverse estable. En nuestro trabajo, la estabilización del material y disminución del CO se observó entre los 9 y 12 meses desde la incorporación.…”

“…La aplicación de enmiendas orgánicas afecta significativamente el nitrógeno mineral del suelo (NH 4 -N y NO 3 -N) después de 6 meses, en especial los tratamientos con estiércol de gallina (Elhadi et al, 2016), en contraste, los suelos con aserrín disminuyeron en la concentración de NO 3 del suelo a menos de 0.5 mg / kg por día (Clark et al, 2007).…”