Biological reclamation of a calcareous sandy soil with improving wheat growth using farmyard manure, acid producing bacteria and yeast

Abstract

Two pot experiments were performed in the Experimental Farm, Soils and Water Department, South Valley University, Qena, Egypt during two successive winter seasons (2018/2019 and 2019/2020). The main objective is to evaluate the effect of four addition levels of farmyard manure (FYM) (0, 10, 20 and 30 g/Kg of soil) combined with acid producing bacteria (APB) + molasses, yeast + molasses or their mixture on improving the chemical properties of a calcareous sandy soils and enhancing wheat growth. The results showed that, the results showed that with the increasing added level of FYM the soil pH and CaCO3 content were decreased and the soil EC, OM, total N and available P and K were increased. In addition, plant dry matter, N, P and K uptakes and use efficiencies were increased. Also, the application of APB + molasses, yeast+ molasses or their mixture with (FYM) were more effective than adding FYM alone in the improvement of calcareous soil properties and enhancement of wheat growth. It could be concluded that the best treatment in improving the calcareous sandy soil properties and increasing wheat growth, nutrients uptake and use efficiencies was the treatment of FYM with APB + yeast+ molasses especially when FYM was applied ate level 30 g/kg soil.

Effect of biochar, azolla and plant growth-promoting rhizobacteria on physical and chemical properties changes of trees residues during composting

“…The data in Figure 9 show that, available phosphorus increased significantly in all treatments during composting, this may be due to production of organic and inorganic acids, as well as CO2 that react and dissolve the rock phosphate and this helps to increase of the available phosphorous. (Farrag and Bakr, 2021;Rasslan et al, 2021). The final values of available phosphorus after the 90 days were 789.02, 839.50, 989.33 and 989.45 mg/kg for treatments T0, T1, T2, T3 and T4, respectively.…”

“…Mineralization of organic materials may be responsible for increasing the total nitrogen. (Farrag and Bakr, 2021;Rasslan et al, 2021). Also, (Rasslan et al, 2021;Zhong et al, 2018) found that, the increase in total nitrogen percentage After compost maturity may be caused to a condensation impact caused by active decomposable of the degradation carbonaceous substrates, resulting a decrease in the mass of the compost mass.…”

“…with microorganism exudates and production of inorganic and organic acids and CO2 produced from the activity of microorganisms, this encourages the dissolution of calcium carbonate, with the released carbonate anion leading to increases in the pH value. Farrag and Bakr (2021) found that, an increase in calcium carbonate content (CaCO3) It can cause an increase in the pH value.…”

“…One of the major problems with the application of rock phosphate is that because it is slowly released, acid produced bacteria inoculation improved P release, Olsen extractable P content progressively increased with the incubation duration in all inoculated treatments (Adnan et al, 2017). Bacillus megathirum and Bacillus polymyxa are acid produced bacteria have the ability to dissolve phosphorus from phosphate rock (Zhong and Huang, 2005;Farrag and Bakr, 2021). The aim of this investigation is to study the effect of adding biochar, Azolla combined with acid producing bacteria and plant growth promoting Rhizobacteria (PGPR) on the chemical and physical properties of the tree residues compost during aerobic decomposition.…”

Manure biostabilization by effective microorganisms as a way to improve its agronomic value

“…As part of their fermentative metabolism, yeasts produce ethanol in relatively high concentrations, which is also recognized as an antimicrobial substance. It is therefore assumed that by degrading the carbohydrates present in manure, ethanol will be produced, which can function as an antagonistic substance against pathogenic microorganisms [68].…”