Effects of Sewage Sludge Compost on the Physicochemical Properties of the Aeolian Sandy Soil

2014 ◽  
Vol 955-959 ◽  
pp. 2764-2767
Author(s):  
Jie Wang ◽  
Feng De Tang ◽  
Yan Li Yi

The aim of this study was to assess the effects of the addition of sewage sludge compost (SSC) on the properties of aeolian sandy soil by measuring electric conductivity (EC),pH value,bulk density,field capacity,total N(TN),total P(TP),organic matter (OM),available N,available P and available K.Seven treatments were included in this experiment,the SSC was applied at rates of 0,2,5,10,15,20,25 kg·m-1.The results showed that the physichemical properties changed greatly with the addition of SSC to the soil. As for physical properties of the soil, bulk density decreased gradually, the field capacity increased significantly compared with CK,As for chemical properties, pH changed inapparently, the concentration of OM and other nutrients were positive correlated with SSC dosages. It was concluded that the addition of SSC could enhance the soil’s fertility and improve the soil’s physical structure,it was an effective disposition way for sewage sludge to be used as the organic fertilizer in soil.

2010 ◽  
Vol 2 (5) ◽  
pp. 87-92
Author(s):  
Milda Radžiūtė ◽  
Audronė Matusevičiūtė

Sewage dump is the main organic waste component accumulating in water treatment companies, and therefore the utilization of dump remains a burning issue. Fertilization is the most popular and cheapest way of using sewage dump a part of which is intended for agriculture in most European countries for composting purposes. Sewage dump or its compost are suitable for fertilizing the upper layers of the soil in cases the concentration of heavy metals is not greater than sanitarian standards can tolerate. The examinations were carried out using different waste dump rates from Vilnius water treatment facility in willow (Salix viminalis) grown cultivated fields. The analysis of the soil was executed after one and two years following the fertilization process. The obtained results indicate that waste dump is a valuable organic fertilizer which contains small amounts of heavy metals. Separate heavy metals migrate from sewage sludge compost to plants differently. It was noted that the concentration of heavy metals in willows was greater (except for Pb and Cd) than that in the soil.


Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1612 ◽  
Author(s):  
Nikolett Uzinger ◽  
Tünde Takács ◽  
Tibor Szili-Kovács ◽  
László Radimszky ◽  
Anna Füzy ◽  
...  

The short-term effects of processed waste materials: sewage sludge compost (up to 0.5%), biochar made of paper sludge and grain husk (BC) (up to 2%) combined with plant growth-promoting rhizobacterial (PGPR) inoculum, on the fertility of acidic sandy soil at 65% of field capacity were tested in a pot experiment in separate and combined treatments. The soil pH, organic matter content, total and plant-available nutrients, substrate-induced respiration, arbuscular mycorrhizal fungal (AMF) root colonisation parameters and maize (Zea mays L.) biomass were investigated in experiments lasting two months. The positive priming (21% organic matter loss) induced by BC alone was not observed after combined application. The combination of compost and PGPR with 1.5% BC resulted in 35% higher P and K availability due to greater microbial activity compared to BC alone. Only compost applied alone at 0.5% gave a 2.7 times increase in maize biomass. The highest microbial activity and lowest AMF colonisation were found in combined treatments. In the short term the combined application of BC, compost and PGPR did not result in higher fertility on the investigated soil. Further research is needed with a wider range of combined treatments on acidic sandy soil for better understanding of the process.


2018 ◽  
Vol 24 (4) ◽  
pp. 380-386 ◽  
Author(s):  
Marcela Caetano Lopes ◽  
Caroline De Moura D'Andréa Mateus ◽  
Dávilla Alessandra Da Silva Alves ◽  
Armando Reis Tavares ◽  
Luiz Vitor Crepaldi Sanches ◽  
...  

The floricultural industry is always searching for new and low-cost materials to use as substrate for crop growth and development. Sewage sludge is an organic solid waste from sewage treatment and it has a good potential to be used as an organic fertilizer and/or substrate conditioner. The research aimed to evaluate the rooting and growth of Codiaeum variegatum ‘Andreanum’ (red variety) and Codiaeum variegatum ‘Punctatum’ (yellow variety) cuttings cultivated in the potting media: PM1 - 100% commercial potting media used as control (CS), PM2 - 100% organic compost of sewage sludge + sugarcane bagasse (SSSB), PM3 - 50% CS + 50% SSSB, PM4 - 100% organic compost of sewage sludge + eucalyptus bark (SSEB) and PM5 - 50% CS + 50% SSEB. After 90 days of experimentation the chemical analysis of the substrate solution (pH, electric conductivity, P, K, Ca, Mg, S, Na, B, Cu, Mn and Zn) and number of shoots, shoot fresh and dry mass, plant cutting fresh and dry masses, root fresh and dry masses, total fresh and dry masses and, length of the largest root were analyzed. Our results showed that sewage sludge compost can be used as a substrate for rooting and growth of croton cuttings when mixed with commercial substrate. The use of the pure sewage sludge compound with sugarcane bagasse or eucalyptus bark prejudiced croton cuttings to root.


2014 ◽  
Vol 63 (2) ◽  
pp. 269-282
Author(s):  
Tibor Aranyos ◽  
Attila Tomócsik ◽  
Viktória Orosz ◽  
Marianna Makádi ◽  
Károly Antal ◽  
...  

A komposztált szennyvíziszap alkalmas talajjavításra, mivel nagy a szervesanyag- tartalma. A rendszeres komposztkezelés javítja a homoktalaj fizikai tulajdonságait, melyek nagymértékben befolyásolják a talajban lejátszódó kémiai és biológiai folyamatokat (az adszorpciós jelenségeket, az oxidáció-redukció feltételeit, az anyagtranszport lehetőségeit, a biológiai aktivitást, a tápanyagforgalmat), s ezeken keresztül a talaj termékenységét.A Debreceni Egyetem Nyíregyházi Kutatóintézetében 2003-tól vizsgáljuk a szennyvíziszap-komposzt tartamhatását kisparcellás kísérletben, melyben talajfizikai méréseket is végzünk a komposztkezelés hatásainak megállapítására. A komposzt 0, 9, 18 és 27 t·ha−1 dózisban, és a következő összetételben került bedolgozásra a talajba: szennyvíziszap 40%, szalma 25%, riolit 30%, bentonit 5%. A kísérlet vetésforgóban vetett tesztnövényei a tritikále (× Triticosecale Wittmack), kukorica (Zea mays L.) és a zöldborsó (Pisum sativum L.). A talaj térfogattömegének, víztartóképesség-görbéjének és légáteresztő képességének meghatározására bolygatatlan talajmintákat vettünk az 5–10 és 20–25 cm-es talajmélységekből hat ismétlésben. A talajok víztartó képességét homokágy-, homok/kaolinágy-, valamint nyomás membrános készülékkel mértük. A talaj légáteresztő képességének meghatározására Eijkelkamp M1-08.65 típusú készüléket használtunk.A kísérleti parcellák talajainak térfogattömeg-értékeinél tapasztalt nagyfokú heterogenitás megmutatkozik a mért víztartóképesség- és légáteresztőképességértékek — kezelésektől kevésbé függő — nagy szórásában. A térfogattömeg és a légáteresztés között közepesen szoros kapcsolatot (R2 = 0,38) tapasztaltunk. Megállapítottuk, hogy a vizsgált homoktalaj 1,6 g·cm−3 térfogattömeg mellett is — szántóföldi vízkapacitásnak megfelelő nedvességtartalom esetén — „nagyon nagy” légáteresztő képességgel rendelkezik.A kapott terméseredmények alapján, a komposztkezelés hatására a talaj fizikai tulajdonságaiban végbemenő változások kedvezően hatnak a növények fejlődésére, ezáltal a terméshozamra.


Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 642 ◽  
Author(s):  
Monika Jakubus ◽  
Małgorzata Graczyk

This research deals with the effects of soil amendment with sewage sludge compost (SSC) on the accumulation of microelements (Cu, Zn, Mn, Ni, Fe) in plants—white mustard (Sinapis alba), triticale (Triticale) and white lupine (Lupinus albus)—cultivated on two contrasting soils (light vs. medium agronomic class). Additionally, the influence of experimental factors on variability of the harvest index (HI) was determined for individual plants and micronutrients. A 3-year pot experiment was conducted and SSC at the rate of 6 t·ha−1 was applied into the soils. These changes were determined by ANOVA and subject to regression analysis and subsequently visualized. The study clearly demonstrated that SSC as an organic fertilizer had a significant, but weak effect on the microelements level variability in the shoots and grains of plants cultivated in crop rotation. Regardless of the experimental factors, on average, the plants accumulated higher amounts of Cu, Zn and Mn in the grains, and Fe and Ni in the shoots. Harvest index values confirmed the significance and variable translocation of microelements within plant organs. The influence of SSC on micronutrient contents in plant organs was more significant in the case of medium soil.


Soil Systems ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 48 ◽  
Author(s):  
Maddalena Curci ◽  
Anna Lavecchia ◽  
Giovanna Cucci ◽  
Giovanni Lacolla ◽  
Ugo De Corato ◽  
...  

The adoption of sewage sludge as an agricultural management strategy to improve soil properties and crop production is attracting great interest. Despite many positive effects on soil inorganic and organic components reported for different soil types, little information is available on sewage sludge application on Mediterranean soils, as well as on its use at different dose rates. The objectives of the present research was to evaluate, through an integrated approach, the effects of sewage sludge compost from urban wastewater on physicochemical, hydrological, biochemical parameters, and microbiota composition in soil pots under a three-year crop rotation system. Four different doses of sewage sludge compost (C3, C6, C9, C12) from municipal wastewater and a dose of them in combination with mineral fertilizer (C6N) were used. We have used 3-6-9-12 Mg/ha of sewage sludge compost for the treatments C3, C6, C9 and C12, respectively, and 6 Mg/ha of sewage sludge compost in combination with 60 kg/ha of ammonium nitrate for the treatment C6N.The effects were compared to non-fertilized (C0) and mineral fertilized (Min) sets of controls. The electrical conductivity, soil pH, stability of soil aggregates, percent of moisture of the dry soil both at the field capacity and at the wilting point, available P, and exchangeable K were all positively affected by increasing the amounts of composted sludge. The organic carbon and total N increased up to 66% and 39%, respectively. Increased enzymatic activities and microbial biomass were also observed in soil after the application of sewage sludge compost when compared to un-amended control. A higher richness and evenness among the soil plots amended with sewage sludge compost was observed, with no significant differences among the application dose rates, when compared to the un-amended soil control and soil treated with a mineral fertilizer. A three-year amendment was able to separate soil plots amended with high doses of sewage sludge compost from the low dose amended and control samples. Among the microbial groups responsible for such marked separation, bacteria belonging to Actinobacteria, Acidobacteria, Cyanobacteria and Bacteroidetes contribute the most, with a shift from oligotrophic to copiotrophic taxa. Significant changes in bacterial composition and taxonomic structure should be considered in order to properly balance agronomic and economic advantages with environmental concerns. After all, our results have evidenced the effects of sewage sludge amendment on different soil properties, microbial activity, and composition already after a short period of application. The findings are particularly relevant in semiarid soils, where an immediate restoration of soil fertility by short-term compost application is needed.


Author(s):  
Geraldo R. Zuba Junio ◽  
Regynaldo A. Sampaio ◽  
Altina L. Nascimento ◽  
Luiz A. Fernandes ◽  
Natália N. de Lima ◽  
...  

ABSTRACTThis study aimed to evaluate the chemical attributes of an Inceptisol cultivated with castor bean (Ricinus communis L.), variety ‘BRS Energia’, fertilized with sewage sludge compost and calcium (Ca) and magnesium (Mg) silicate. The experiment was conducted at the ICA/UFMG, in a randomized block design, using a 2 x 4 factorial scheme with three replicates, and the treatments consisted of two doses of Ca-Mg silicate (0 and 1 t ha-1) and four doses of sewage sludge compost (0, 23.81, 47.62 and 71.43 t ha-1, on dry basis). Soil organic matter (OM), pH, sum of bases (SB), effective cation exchange capacity (CEC(t)), total cation exchange capacity (CEC(T)), base saturation (V%) and potential acidity (H + Al) were evaluated. There were no significant interactions between doses of sewage sludge compost and doses of Ca-Mg silicate on soil attributes, and no effect of silicate fertilization on these attributes. However, fertilization with sewage sludge compost promoted reduction in pH and increase in H + Al, OM and CEC. The dose of 71.43 t ha-1 of sewage sludge compost promoted the best soil chemical conditions.


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