scholarly journals The effect of different compost rates on the yield of ryegrass (Lolium perenne L.)

2011 ◽  
pp. 95-98
Author(s):  
Anita Szabó ◽  
Imre Vágó

Protection of natural resources and sustainable natural resources management are essential for the long-term survival of humanity. This makes necessary nowadays the development of environmentally conscious living and spread of that in the future. The amount of organic waste materials, produced during human activities, could be decreased by composting instead of dispose them in landfills. Applying appropriate treatment technology and additives, the compost could be used as fertilizer for horticultural crops and it could increase the easily available nutrient content of soils. Compost utilization prevents nutrient deficiencies and by using the optimal rate, we could reach significant yield increases.

1999 ◽  
Vol 39 (8) ◽  
pp. 177-184 ◽  
Author(s):  
Derin Orhon ◽  
Seval Sözen ◽  
Erdem Görgün ◽  
Emine Ubay Çokgör ◽  
Nazik Artan

Coastal tourist areas should be classified as environmentally sensitive areas. Effective nutrient control should be implemented to safeguard the quality of receiving waters in these areas. In this context, the applicable discharge limitations are reviewed with specific reference to European directives and criteria developed for small coastal residential areas in Turkey are reported; wastewater characterization and its impact on treatment technology selection is reviewed; appropriate treatment technologies are evaluated in terms of selecting new applications and upgrading and retrofitting existing systems.


2006 ◽  
Vol 92 (6) ◽  
pp. 487-490 ◽  
Author(s):  
Vincenzo Cangemi ◽  
Enrico Fiori ◽  
Cristina Picchi ◽  
Alessandro De Cesare ◽  
Roberto Cangemi ◽  
...  

Aims and background Controversy continues regarding the best surgical treatment for early gallbladder carcinoma defined as a tumor confined to the mucosa (pT1a) or to the muscularis propria (pT1 b) according to the TNM classification. This study evaluates the effectiveness of different surgical approaches in patients with early gallbladder carcinoma in terms of long-term survival. Materials and methods From 1980 to 2001, 175 patients with gallbladder carcinoma were admitted to our department. Fifteen of them underwent resections for early gallbladder carcinoma: 4 patients for pT1a tumors and 11 patients for pT1b tumors. All patients with pT1a tumors and 8 patients with pT1b tumors underwent simple cholecystectomy. The remaining 3 patients with pT1 b tumors underwent extended cholecystectomy. Results The 5-10 year cumulative survival rate was 100% for patients with pT1a tumors, 37.5% for patients with pT1b tumors who underwent simple cholecystectomy, and 100% for patients with pT1b tumors who underwent extended cholecystectomy. Conclusions Simple cholecystectomy is the appropriate treatment for patients with pT1a tumors, whereas patients with pT1b tumors require an extended cholecystectomy.


2021 ◽  
Vol 23 (2) ◽  
pp. 184
Author(s):  
Ashaluddin Jalil ◽  
Yesi Yesi ◽  
Seger Sugiyanto

Vulnerability to the forest and land fires in the Tohor River began in 2007 and 2009 due to the construction of canals for village development as well as the canalization of sago companies, which are 5-7 meters wide. The purpose of the study identified potential resources for people's lives and peatland protection. Data collection using observations, interviews, and discussion forums. The results showed that the potential in the field of natural resources consists of plantations including sago, rubber, river fisheries, honey, and natural forest vegetation. In addition, the economic potential is also very large individuals and groups have implemented the management of sago derivative products such as sago sugar, sago noodles, sago rendang, sago amplang, and various handicrafts from sago such as rumbia roofs, bags and mats. In the field of human resources, there are LPMP village institutions, PKK and KKP, Environmentally Conscious Group, Tohor River Youth, Fish Farming Group, and community network including sago farming groups and youth associations. The productive age group is also quite large but they generally work a lot in Malaysia as contract workers. The potential of Natural Resources and Human Resources is important in people's lives especially to protect peat but the potential has not been developed to the maximum. Collaboration from stakeholders is required to develop optimally the potential available for better peat life and ecosystem


2021 ◽  
Vol 233 ◽  
pp. 01128
Author(s):  
Junye Li

With economic development and population growth, the demand for fresh water resources is also increasing. However, affected by sewage discharge from industry, agriculture, mining and domestic, not only the ecological environment and natural resources are seriously damaged, but also the water resources available for people to drink are decreasing day by day. How to improve the water pollution treatment technology has become an urgent task. Because of the high cost and great limitation, the traditional treatment method has no significant effect in water pollution control. As an advanced oxidation technology, photocatalyst can effectively degrade pollutants in water pollution, and has a positive effect on improving water quality, protecting natural resources and maintaining ecological balance.


2019 ◽  
Vol 13 (1-2.) ◽  
pp. 57-74
Author(s):  
Szabolcs Pásztor

The monetary policy of the Sub-Saharan countries is a lesser-known field for those Hungarian readers who are interested in Africa. In the last few decades several fundamental changes took place so a short synthesis is badly needed to better understand this issue. Apart from the fact that this study tries to shed light on the monetary policy challenges of different periods, it also places much emphasis on the contemporary issues in central banking.After the turn of the new millenium the central banks have been struggling with unpredictable fiscal policies, the appropriate treatment of the revenues of the natural resources, not to mention the inflow of foreign aid. It is also highly important to monitor the frequency of the supply shocks and the efficiency of the monetary transmission mechanism. After shedding more light on these issues, the paper tries to focus on the role of the exchange rates, the room for manoeuvre of the central banks in the financial stability and the adequate management of the revenues stemming from the export of natural resources.


1985 ◽  
Vol 105 (1) ◽  
pp. 135-139 ◽  
Author(s):  
G. O. Kayode

SUMMARYResults of a 2-year studyin the rainforest and savannah zones of Nigeria todetermine the responses of yield, components of yield and nutrient content of maize to soilapplied zinc showed that Zn significantly increased yield in the new and old savannah soils, whereas significant yield response was recorded only in an old field of the forest zone. Ear weight was the only yield component significantly influenced by Zn treatments in the two zones. Application of 2·5 kg Zn/ha appears adequate for successful maize production in the savannah and old forest zones in the tropics.Soil-applied Zn significantly increased ear-leaf N and Zn, but P concentration was significantly decreased. Grain yield was positively correlated with ear-leaf Zn.


2017 ◽  
Vol 44 (11) ◽  
pp. 971-983 ◽  
Author(s):  
Gurvinder S. Mundi ◽  
Richard G. Zytner ◽  
Keith Warriner

On average, it is estimated that up to 5 L of wastewater is generated per kilogram of produce in post-harvest processing of fruit, leafy greens, and root vegetables. The typical wastewater parameters vary in concentration (solids content, COD, BOD, nitrogen, phosphorus) based on the produce being processed. The challenge for producers and regulators is that the selection of the appropriate treatment technology is challenging, so decision matrices were developed to narrow down the treatment selections. Wash-waters for different types of fruit and vegetables from two different operation types, washing only versus washing and processing were investigated. Bench-scale treatments selected for testing included settling, coagulation and flocculation with settling, centrifuge, dissolved air flotation, electrocoagulation, screening, and hydrocyclone. The developed decision matrices summarize the removal effectiveness of the different treatments for typical wastewater parameters and serve as a reference tool in understanding wash-water treatment technologies and their effectiveness in treating various wash-waters.


2014 ◽  
Vol 18 (3) ◽  
pp. 144-149
Author(s):  
Vasiliki P. Koidou ◽  
Theodoros Lambrianidis

SUMMARYRoot fractures are relatively uncommon among other dental traumas and mostly affect the anterior dentition. This case report presents the endodontic and prosthodontic management of a maxillary central incisor with a combined fracture in the middle third of the root and the crown, as well as the 7-year follow up of the case. The healing potential of a horizontal root fracture in the middle third of the root is highlighted when appropriate treatment is applied. MTA used for obturation of the coronal fragment, induced hard tissue formation apically and promoted healing in the area, while the 2mm MTA left as apical barrier at the second stage of re-treatment and obturation with gutta-percha prevented its extrusion. The multidisciplinary approach in the management of such cases ensures a long term survival.


1974 ◽  
Vol 54 (1) ◽  
pp. 135-139
Author(s):  
D. C. MUNRO ◽  
J. A. CUTCLIFFE

Rutabagas (Brassica napobrassica Mill., cult York) were grown at three locations per year for 3 yr in factorial experiments of four levels of N, P, and K. Uppermost mature leaves were sampled at the beginning of root enlargement, at harvest time, and once between these dates. The leaf tissue was dried, ground, and analyzed for total N, P, and K. Percent N in leaf tissue was substantially increased by applied N, increased by applied P at some locations, and decreased by applied K. Percent P was increased by applied P and somewhat by applied N but decreased by applied K. Applied K increased the K content of leaf tissues but applied P and N caused substantial decreases in tissue K. Tissue N, P, and K decreased as the crop matured. To prevent nutrient deficiencies, rutabaga leaf-tissue at the beginning of root enlargement must contain at least 4.1% N, 0.46% P, and 2.0% K. Optimum nutrient levels for good yields are in the ranges 5.4–5.9% N, 0.58–0.70% P, and 3.0–3.8% K at this stage of growth.


2020 ◽  
Vol 26 (118) ◽  
pp. 78-87
Author(s):  
Dikko Bello

An excellent reputation earned by initiating and practicing sustainable business practices has additional benefits, of which are reducing environmental incidents and an improvement in operational efficiency as this has the potential to help firms improve on productivity and bring down operating costs. Taken further, with ever-increasing socially and environmentally-conscious investors and the public alike, this act of natural resources management could have a significant implication on market value and income of the practicing firms. The above proposition has been supported by sustainable business practices literature that is continuously conversing and deliberating upon the impact of efficient resource deployment and sustainable business practices.  This paper aims to add value and contribute by offering inferences on cost reduction possibilities through improved natural resources management. Therefore it is an entirely conceptual level approach that provided potentially efficient tools for business sustainability and profitability


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