Estimation of phosphorus bioavailability from composted organic wastes

Jakubus, Monika

doi:10.1080/09542299.2016.1227687

Cited by 35 publications

(17 citation statements)

References 26 publications

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“…Even so, PA did not increase after the application of CVER and CBD. Matured composts represent important source of plant available P [52]. Thus, the composts applied at a dose of 40 Mg/ha could have theoretically contributed to plant nutrition but had no positive effect on the PA level because they probably did not increase the content of mineralizable P in the soil [53].…”

Section: Soil Enzyme Activitiesmentioning

confidence: 99%

Response of Microbial Activities in Soil to Various Organic and Mineral Amendments as an Indicator of Soil Quality

et al. 2019

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The presented paper deals with the analysis of potential differences between organic waste compost (CBD), vermicompost (CVER) and mineral fertilizer (MF; 27% of N) applications affecting the quality of arable soil by influencing microbial activity therein. The selected types of compost represent alternatives to conventional organic fertilizers, which are, however, not available to Czech and Slovak farmers in sufficient amounts. Their mutual comparison and the comparison with organic fertilizers aim to provide farmers further information about their influence on arable land and thus to give them the possibility of deciding on the most suitable amendments. To demonstrate the effect of these amendments, six variants were prepared: one without the addition of fertilizers; two variants with the addition of 40 Mg/ha of CVER and CBD; one variant with the addition of double dosed CVER (80 Mg/ha), and the remaining two variants were fertilized only with MF (0.22 Mg/ha) and with the combination of CVER (0.20 Mg/ha) and MF (0.11 Mg/ha). Substrate induced respiration (SIR), basal respiration (BS), microbial carbon (Cmic) and enzymatic activities (hydrolysis of fluorescein diacetate—FDA, dehydrogenase activity—DHA, and phosphatase activity—PA) were used to evaluate the effect of CBD, CVER and MF application on the soil quality. Both organic and mineral amendments affected BS and SIR. The highest BS and SIR rates were found in variants with compost application (CVER and CBD). All variants treated with the mineral fertilizer showed the lowest level of enzyme activities; lower by about 30% in comparison with variants where CVER, CBD and the combination of MF and CVER were applied. We found insignificant differences between the individual types of compost. More importantly, we compared the situation at the beginning of the experiment and after its end. It was found that the application of mineral fertilizers automatically led to the deterioration of all enzymatic parameters, on average by more than 25%, as compared with the situation at the beginning of the experiment. However, when the mineral fertilizer dose was supplemented with organic amendments (CVER), this negative effect was eliminated or significantly reduced. Furthermore, both composts (CVER and CBD) positively affected plant biomass production, which reached a level of production enhanced by the MF. Results clearly showed that the application of both compost types could be used to improve soil quality in agriculture.

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Section: Soil Enzyme Activitiesmentioning

confidence: 99%

Response of Microbial Activities in Soil to Various Organic and Mineral Amendments as an Indicator of Soil Quality

et al. 2019

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“…Agricultural land application of treated sewage sludge, i.e. biosolids, as soil conditioner and nutrient source for plants, is one of the most promising options for dealing with the waste [3][4][5], since it has high contents of organic matter, nitrogen (N), phosphorus (P) and potassium (K) with great potentials of improving the quality and yield of crops as a good alternative to mineral fertilizers and upgrading soil conditions especially for fixing land degradation problems [3,[6][7][8]. In addition, biosolids are of other advantages over the traditionally inorganic fertilizer, for example, low cost and the nutrient slow-release that keeps nutrients constantly available and consequently promotes its efficiency for plants and soils [9], may reduce the potential environmental pollution caused by leaching of excess nutrients that often happens in mineral fertilizer added soils [10].…”

Section: Introductionmentioning

confidence: 99%

Changes in soil microbial community structure following amendment of biosolids for seven years

Pang

Yang

et al. 2019

Environmental Pollutants and Bioavailability

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The environment-friendly disposal approaches for sewage sludge remain a challenge worldwide, and agricultural application of the treated sewage sludge, i.e. biosolids, as soil conditioner and nutrient source for plants, is still one of the most promising options for dealing with the waste. In this study, we compared the effects of long-term applications of biosolids and mineral fertilizer on soil microbial community using phospholipid fatty acid profiles in an agricultural field. The microbes predominant in the mineral fertilizer soil remained the most abundant in the biosolids-amended soil. Bacterial and fungal communities presented downtrends in both absolute and relative amounts; however, percentage of Gram-positive bacteria remained unchanged. Soil pH displayed significant negative correlations with microbial communities and explained 64%, 56% and 44% of the variances in microbial biomass, bacteria and fungi, respectively, while soil NO 3-N was positively correlated with microbial biomass, bacteria and fungi (r 2 = 0.53, 0.51 and 0.54, respectively).

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“…We found the greatest leaf mass production and ground cover occurred on T. argentea trees fertilized with dehydrated sewage sludge compared with unfertilized trees. Also, higher abundance and species richness of phytophagous Hemiptera, Sternorrhyncha predators, and protocooperating ants was noted; this may be due to the high number of leaves produced per tree by the fertilization with dehydrated sewage sludge, because it is rich in macro-and micronutrients (Nogueira et al 2007;Jakubus 2016), thus improving nutritional plant quality (Taiz et al 2017) for arthropod colonization. Our results support the hypothesis that trees with higher leaf mass production and greater associated free amino acids would attract more sucking insects, and thus consequently Sternorrhyncha predators and protocooperating ants.…”

Section: Discussionmentioning

confidence: 99%

“…Our results support the hypothesis that fertilization with dehydrated sewage sludge improves tree growth and ground cover, assisting in the restoration of ecologically damaged areas. As previously stated, dehydrated sewage sludge is rich in organic matter, containing macronutrients such as nitrogen and phosphorus as well as the micronutrients copper and zinc that favor tree development (Jakubus 2016). The recovery of severely disturbed areas is usually slow (Ferreira et al 2007), but fertilization with dehydrated sewage sludge is promising (Lorenzi 2002) and may allow for shorter recovery periods.…”

Section: Discussionmentioning

confidence: 99%