Effects of Different Agricultural Wastes on Some Soil Quality Indexes in Clay and Loamy Sand Fields

Abstract

Effects of manure (M), hazelnut husks (HH), tea waste (TEW), and tobacco wastes (TOW) on some soil quality indexes were monitored for more than 2 years in a clay field and a loamy sand field. While soil organic carbon (OC) contents were around 2% after 30 months in clay, they were generally less than 2% after 7 months in loamy sand. Organic wastes generally increased aggregate stability (AS) and field capacity and decreased bulk density (BD) of the soils. Soil pH decreased with TEW and increased with M treatment. Tobacco wastes exerted the greatest effect on AS, EC, and nitrate (NO 3 ) nitrogen (N). Hazelnut husks and TEW had the greatest effect on soil respirationin clay and loamy sand soils, respectively. While BD and pH increased, the other indicators generally decreased between the first and the last sampling. Soil quality can be improved in coarse-textured soils using TEW and HH and in fine-textured soils using TEW and M.

Effects of agricultural wastes on the hydraulic properties of a loamy sand cropland in Turkey

“…Gülser (2006) reported that increases in organic C content significantly reduced bulk density and increased total porosity and the proportion of larger aggregates, and that there was a significant positive correlation between OC and AS. Lower BD indicates increased pore space in the soil due to the aggregation of soil particles by OM amendments (Candemir and Gülser 2010). The decomposition products of OM facilitate soil aggregation (Six et al 2004).…”

“…Many studies have reported that the addition of organic wastes to soils reduces bulk density and increases total pore space (Anikwe 2000;Marinari et al 2000;Candemir and Gülser 2010). The increase in water-holding capacity or FC due to increased soil OM can be attributed to greater macroaggregation and increased porosity (Franzluebbers 2002;Shaver et al 2002).…”

Effects of spent mushroom compost application on the physicochemical properties of a degraded soil

“…The recovery in aggregate stability of such physically degraded soils is important, as those studied were expected to follow the incorporation of any cementing agent, such as SMC (Curtin and Mullen, 2007). Soil organic matter has been suggested to be the most important factor in the determination of soil aggregate stability because of the significant positive relationships between these two parameters (Aksakal et al, 2015;Candemir and Gülser, 2010;Cerdà, 1998). Thus, the application of organic materials has been proposed to improve the physical properties of degraded soils (Turgut and Kose, 2016).…”

Zeytin Atığının Tınlı Bünyeli Bir Toprakta Yüzey Akış, Toprak Kaybı, Drenaj, pH ve EC Üzerindeki Etkileri1

“…Karıştırılarak uygulanan zeytin atığı ise toprak ve drene olan suda ölçülen pH'rı sırasıyla % 0.4-3 azaltırken, EC'ri ise % 3-25 ve % 34-73 oranında arttırmıştır. Elde edilen bu sonuçlar, yapılan bazı çalışmaların sonuçlarıyla da benzerlik göstermektedir (Kavvadias et al, 2010;Candemir and Gülser, 2011;Nektarios et al, 2011;.…”

“…Yapılan bir diğer çalışmada, araziye uygulanan zeytinyağı fabrikası atıklarının toprakta EC'yi arttırırken, pH'ı ise marjinal etkilediği bulunmuştur (Kavvadias et al, 2010). Candemir and Gülser, (2011) killi ve tınlı kumlu arazilerde hazırladıkları parsellere uyguladıkları gübre, fındıkkabuğu, çay ve tütün atıklarının toprak fiziksel özelliklerini iyileştirmeleri yanında pH ve EC'yi arttır-dıklarını bulmuşlardır. Nektarios et al, (2011) zeytin atıklarının (%12.5 ve 50) pH ve hacim ağırlığı % 19.4-32.6 oranında azaltırken, su tutma kapasitesini % 13.3-57 oranında arttırdığını bulmuşlardır.…”