The impact of Eisenia veneta on As, Cu, Pb and Zn uptake by ryegrass (Lolium perenne L.)

2008 ◽  
Vol 72 (1) ◽  
pp. 495-499 ◽  
Author(s):  
T. Sizmur ◽  
M. E. Hodson
Keyword(s):  
Lolium Perenne ◽  
Contaminated Soils ◽  
Soil Fauna ◽  
Significant Proportion ◽  
Soil Health ◽  
Soil Formation ◽  
Lolium Perenne L ◽  
Zn Uptake ◽  
The Subject ◽  
The Impact

AbstractEarthworms are an essential part of the soil fauna in many global soils, represent a significant proportion of the soil biomass and are regarded as a useful indicator of soil health and quality (Edwards, 2004). They are also often the subject of inoculation programmes during the restoration of degraded lands (Butt, 1999) and the inoculation of earthworms to metal-contaminated soils has been suggested(Dickinson, 2000) largely due to the role earthworms are known to play in soil formation at such sites (Frouz et al., 2007).

Effect the Addition of Sugarcane Bagasse Composts On Micronutrient Assimilability in Ryegrass

1992 ◽  
Vol 10 (1) ◽  
pp. 13-19
Author(s):  
M.T. Baca ◽  
E. Benitez ◽  
R. Nogales
Keyword(s):  
Lolium Perenne ◽  
Sugarcane Bagasse ◽  
Plant Material ◽  
Soil Samples ◽  
Soil Mineral ◽  
Lolium Perenne L ◽  
The Third ◽  
Zn Uptake ◽  
Entire Experiment ◽  
Cu And Zn

An experiment was conducted under greenhouse conditions to determine the effect of different applied sugarcane bagasse composts on micronutrient assimilability. Five treatments were prepared: soil alone (C), soil + mineral complements of N, P and K (NPK) and three treatments, containing soil + different sugarcane bagasse composts at 100 t ha-1, A ryegrass culture (Lolium perenne L. c.v. Varna) was grown in pots from which five harvests of plant material were obtained. Soil samples of each treatment were collected before sowing and after the third and fifth harvests. The addition of sugarcane bagasse composts to soil increased DTPA-extractable Fe, Mn, Cu and Zn throughout the entire experiment in comparison with C and NPK. These organic materials also led to an increase in Fe, Cu and Zn uptake by plants after the second harvest.

Evaluating a ‘Free Ion Activity Model’ applied to metal uptake by Lolium perenne L. grown in contaminated soils.

2005 ◽  
Vol 270 (1) ◽  
pp. 1-12 ◽  
Author(s):  
R. L. Hough ◽  
A. M. Tye ◽  
N. M. J. Crout ◽  
S. P. McGrath ◽  
H. Zhang ◽  
...  
Keyword(s):  
Lolium Perenne ◽  
Contaminated Soils ◽  
Metal Uptake ◽  
Activity Model ◽  
Lolium Perenne L ◽  
Free Ion Activity Model ◽  
Free Ion ◽  
Ion Activity

Assessing soil health by measuring fauna

2021 ◽  
pp. 3-24
Author(s):  
Felicity Crotty ◽  
Keyword(s):  
Soil Fauna ◽  
Soil Health ◽  
Habitat Changes ◽  
The Impact ◽  
Soil Habitat

This chapter provides examples of the impact of soil fauna on soil health within different ecosystems and how the soil habitat changes in relation to this biodiversity. It focuses specifically on mesofauna in agriculture, grasslands, woodlands and as bioindicators, before concluding with an overview of how the development of mesofauna as bioindicators is important in establishing a healthy soil.

scholarly journals Weight gain of highland cattle depending on the share of perennial ryegrass (Lolium perenne l.) in the meadow sward

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Adam Radkowski ◽  
Iwona Radkowska ◽  
Jan Bocianowski ◽  
Adrian Cyplik
Keyword(s):  
Weight Gain ◽  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Statistical Significance ◽  
Daily Weight Gain ◽  
Average Daily Weight Gain ◽  
Lolium Perenne L ◽  
Experimental Treatments ◽  
The Impact

Abstract The aim of this study was to determine the influence of the different proportion of perennial ryegrass (Lolium perenne L.) in the meadow sward on its fodder value and daily weight gain of Highland cattle. The research was carried out on meadow sward with natural undergrowth that was cultivated by sowing perennial ryegrass. When preparing the sward for sowing, around 40% of it was damaged with a rotary tiller. The sowing rate for perennial ryegrass seeds was varied and amounted to 5, 10 and 15 kg ha−1. As a result, the following treatments of meadow sward were obtained and distinguished: semi-natural sward without sowing as the control, and three experimental treatments with approximately 18, 36 and 55% share of perennial ryegrass in the meadow sward. The animals were kept in a cowshed. In the nutritional part, the impact of feeding the obtained sward on the daily weight gain of Highland bulls and heifers was assessed. The obtained results showed higher gains in both bulls and heifers fed with sward from grasslands with a greater proportion of perennial ryegrass. The weight gain of the animals resulted from the nutrition, i.e. the quality of the feed obtained from the experimental objects. During the control fattening period, the bulls’ average daily weight gain ranged from 649 g to 714 g, while for heifers 556 g to 598 g. Statistical significance (P ≤ 0.05) in body weight gains in both bulls and heifers was shown already at 36% of perennial ryegrass in the meadow sward.

scholarly journals Aided Phytostabilization of Copper Contaminated Soils with L. Perenne and Mineral Sorbents as Soil Amendments

2017 ◽  
Vol 26 (3) ◽  
pp. 79-89 ◽  
Author(s):  
Maja Radziemska
Keyword(s):  
Trace Elements ◽  
Lolium Perenne ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Above Ground Biomass ◽  
Lolium Perenne L ◽  
Different Types ◽  
Potential Risks ◽  
Copper Contaminated ◽  
Potential Use

Abstract The present study was designed to assess phytostabilization strategies for the treatment of soil co-contaminated by increasing levels of copper with the application mineral amendments (chalcedonite, zeolite, dolomite). From the results it will be possible to further elucidate the benefits or potential risks derived from the application of different types of mineral amendments in the remediation of a copper contaminated soil. A glasshouse pot experiment was designed to evaluate the potential use of different amendments as immobilizing agents in the aided phytostabilization of Cu-contaminated soil using ryegrass (Lolium perenne L.). The content of trace elements in plants and total in soil, were determined using the method of spectrophotometry. All of the investigated element contents in the tested parts of L. perenne were significantly different in the case of applying mineral amendments to the soil, as well as increasing concentrations of copper. The greatest average above-ground biomass was observed for soil amended with chalcedonite. In this experiment, all analyzed metals accumulated predominantly in the roots of the tested plant. In general, applying mineral amendments to soil contributed to decreased levels of copper concentrations.

The impact of urease inhibitor on the bioavailability of nitrogen in urea and in comparison with other nitrogen sources in ryegrass (Lolium perenne L.)

2010 ◽  
Vol 61 (3) ◽  
pp. 214 ◽  
Author(s):  
K. Dawar ◽  
M. Zaman ◽  
J. S. Rowarth ◽  
J. Blennerhassett ◽  
M. H. Turnbull
Keyword(s):  
Lolium Perenne ◽  
N Uptake ◽  
Urea Hydrolysis ◽  
N Use Efficiency ◽  
Urease Inhibitor ◽  
Lolium Perenne L ◽  
Uptake Efficiency ◽  
Use Efficiency ◽  
The Impact ◽  
N Use

Improving nitrogen (N)-use efficiency of applied urea is critical to maximise its uptake and decrease environmental impact. Two glasshouse-based studies were conducted to investigate the potential of incorporating urea fertiliser with urease inhibitor (N-(n-butyl) thiophosphoric triamide (NBPT) or ‘Agrotain’) to enhance fertiliser N uptake efficiency. Topsoil (0–0.075 m, Typic Haplustepts silt loam) from a pasture site near Lincoln, Canterbury, New Zealand, was collected and ryegrass (Lolium perenne L.) was grown from seed in standard plant trays maintained at soil moisture contents of 75–80% field capacity. Urea, Agrotain-treated urea, ammonium nitrate, ammonium sulfate, or sodium nitrate, were applied in granular form at rates equivalent to 25 or 50 kg N/ha with 4 replicates. Herbage was harvested 21 and 42 days after application of treatments to assess dry matter (DM) production, N uptake, leaf amino acid, ammonium (NH4+) and nitrate (NO3–) concentrations, and nitrate reductase activity (NRA). In a separate pot experiment, granular 15N urea (10 atom%) with or without Agrotain was applied to ryegrass at 25 kg N/ha. At 0.5, 1, 2, 3, 5, 10, and 21 days after treatment application, 3 pots per treatment were destructively sampled to determine urea hydrolysis, herbage DM, and 15N uptake. In both experiments, Agrotain-treated urea improved bio-availability of added N and resulted in significantly higher herbage DM yield and N uptake than urea alone or other forms of N fertilisers. Agrotain-treated urea applied at 25 kg N/ha increased N response by 66% compared with urea alone (and by greater proportions compared with the other fertiliser forms). Agrotain-treated urea applied at 25 kg N/ha produced significantly higher uptake efficiency (13 g DM/g of applied N) than at 50 kg N/ha (5 g DM/g of applied N). Tissue amino acids, NH4+ and NO3– contents, and NRA were not significantly influenced by any type of fertiliser. Results from the 15N experiment support the suggestion that a delay in urea hydrolysis by Agrotain provided an opportunity for direct plant uptake of an increased proportion of the applied urea-N than in the case of urea alone. Treating urea with Agrotain thus has the potential to increase N-use efficiency and herbage production.

scholarly journals Potential of rice straw biochar, sulfur and ryegrass (Lolium perenne L.) in remediating soil contaminated with nickel through irrigation with untreated wastewater

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9267 ◽  
Author(s):  
Inas A. Hashem ◽  
Aonalah Y. Abbas ◽  
Abo El-Nasr H. Abd El-Hamed ◽  
Haythum M.S. Salem ◽  
Omr E.M. El-hosseiny ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sustainable Agriculture ◽  
Rice Straw ◽  
Lolium Perenne ◽  
Contaminated Soils ◽  
Animal Feed ◽  
Soil Health ◽  
Incubation Experiment ◽  
Untreated Wastewater ◽  
Rice Straw Biochar

Background Untreated wastewater carries substantial amount of heavy metals and causes potential ecological risks to the environment, food quality, soil health and sustainable agriculture. Methodology In order to reduce the incidence of nickel (Ni2+) contamination in soils, two separate experiments (incubation and greenhouse) were conducted to investigate the potentials of rice straw biochar and elemental sulfur in remediating Ni2+ polluted soil due to the irrigation with wastewater. Five incubation periods (1, 7, 14, 28 and 56 days), three biochar doses (0, 10 and 20 g kg−1 of soil) and two doses of sulfur (0 and 5 g kg−1 of soil) were used in the incubation experiment then the Ni2+ was extracted from the soil and analyzed, while ryegrass seeds Lolium perenne L. (Poales: Poaceae) and the same doses of biochar and sulfur were used in the greenhouse experiment then the plants Ni2+-uptake was determined. Results The results of the incubation experiment revealed a dose-dependent reduction of DTPA-extractable Ni2+ in soils treated with biochar. Increasing the biochar dose from 0 g kg−1 (control) to 10 or 20 g kg−1 (treatments) decreased the DTPA-extractable Ni2+ from the soil by 24.6% and 39.4%, respectively. The application of sulfur increased the Ni2+-uptake by ryegrass plant which was used as hyper-accumulator of heavy metals in the green house experiment. However, the biochar decreased the Ni2+-uptake by the plant therefore it can be used as animal feed. Conclusions These results indicate that the biochar and sulfur could be applied separately to remediate the Ni2+-contaminated soils either through adsorbing the Ni2+ by biochar or increasing the Ni2+ availability by sulfur to be easily uptaken by the hyper-accumulator plant, and hence promote a sustainable agriculture.

Managing Service Quality, Food Quality, Price Fairness and Customer Retention: A Holistic Perspective

2020 ◽  
Vol 2 (1) ◽  
pp. 1-5
Author(s):  
Ammar Ahmed ◽  
Rafat Naseer ◽  
Muhammad Asadullah ◽  
Hadia Khan
Keyword(s):  
Service Quality ◽  
Food Quality ◽  
Service Sector ◽  
Customer Retention ◽  
Price Fairness ◽  
Policy Makers ◽  
Restaurant Management ◽  
The Subject ◽  
Research Propositions ◽  
The Impact

In this competitive environment, organizations strive to satisfy their customer by providing best quality service at affordable and fair prices with a view to enhance their revenues. To achieve the objective of revenue maximization, organizations strive to identify the factors that help them in retaining their customers. Drawing from the signalling theory of marketing, the current study proposes a novel conceptual model representing the impact of service quality with food quality and price fairness on customer retention in restaurant sector of Pakistan. The paper underlines an important arena of knowledge for academicians as well as organizational scientists on the subject. On the basis of literature available on the variables understudy, the present study forwards eight research propositions worthy of urgent scholarly attention. The conceptualized model of the present article can also be viewed significant in unleashing further avenues for the restaurant management entities, policy makers and future researchers in the domain of managing in the service sector businesses.

Solow economy model

2019 ◽  
pp. 150-157
Author(s):  
Oleksandr Synenko ◽  
Kateryna Yarema ◽  
Yuliia Bezsmertna
Keyword(s):  
Economic Growth ◽  
Regression Analysis ◽  
Solow Model ◽  
Economy Model ◽  
Accelerated Depreciation ◽  
Basic Parameters ◽  
The Subject ◽  
Investment Process ◽  
The Impact ◽  
Model Algorithm

The subject of the research is the approach to the possibility of using the Solow model to perform the regression analysis on the example of the Ukrainian economy model. The purpose of writing this article is to investigate the notion of regres- sion analysis, Solow’s economy model, algorithm for performing regression analy- sis on the example of Ukraine’s economy model. This model can be adapted for the economy of enterprises. Methodology. The research methodology is system-struc- tural and comparative analyzes (to study the structure of GDP); monograph (when studying methods of regression analysis on the example of the Ukrainian economy); economic analysis (when assessing the impact of factors on Ukraine’s GDP). The scientific novelty consists the features of the use of the Solow model on the ex- ample of Ukrainian economy are determined. An algorithm for calculating the basic parameters of a model using the Excel application package is disclosed. The main recommendations on the development of the national economy and economic growth through the use of macroeconomic instruments are given. Conclusions. The use of the Solow model enables forecasting and analysis. The results obtained re- vealed the problem of low resource return of capital as a resource, along with the means of macroeconomic regulation of the investment process, using which can improve the situation. A special place in these funds belongs to the accelerated depreciation and interest rate policies.

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