scholarly journals Economic analysis of organic greenhouse lettuce production in Turkey

2006 ◽  
Vol 63 (3) ◽  
pp. 285-290 ◽  
Author(s):  
Sait Engindeniz ◽  
Yuksel Tuzel
Keyword(s):  
Organic Fertilizer ◽  
Poultry Manure ◽  
Economic Feasibility ◽  
Organic Fertilizers ◽  
Vegetable Production ◽  
Health Issues ◽  
Economical Analysis ◽  
Greenhouse Vegetable ◽  
On Farm ◽  
Greenhouse Vegetable Production

Health issues and environmental concerns have drawn the attention to organic agriculture aiming to protect the natural balance and to produce without damaging the environment. This study aims determining economic feasibility of organic greenhouse lettuce (Lactuca sativa L.) in an on farm trial, to foster organic greenhouse vegetable production in the preservation area of Tahtali Dam, projected as the sole water resource of Izmir, Turkey's third largest. A 384 m² greenhouse, constructed of galvanized metal tubing anchored and covered with a polyethylene was analyzed to identify typical operation procedures, and to determine unitary construction and operation cost. Organic lettuces were produced during autumn season of 2001-2002, testing different organic fertilizer applications, including two rates of farmyard and poultry manure (30 and 50 t ha-1) with and without two organic fertilizers based on either bacteria or algae. Economical analysis was performed according to different organic fertilizer applications. Cost, yield, and price data were analyzed to determine the profitability of a typical operation. Net return obtained from organic lettuce growing ranged between us $ 0.376 and us $ 0.901 m-2, as a result of different fertilizer applications.

Organic cucumber production in the greenhouse: A case study from Turkey

2005 ◽  
Vol 20 (4) ◽  
pp. 206-213 ◽  
Author(s):  
Y. Tuzel ◽  
A. Gul ◽  
O. Tuncay ◽  
D. Anac ◽  
N. Madanlar ◽  
...  
Keyword(s):  
Crop Production ◽  
Total Yield ◽  
Poultry Manure ◽  
Plant Diseases ◽  
Production Costs ◽  
Organic Fertilizers ◽  
Agricultural Activity ◽  
Vegetable Production ◽  
Greenhouse Vegetable ◽  
Greenhouse Vegetable Production

AbstractOrganic farming seems to be a solution in environmentally sensitive zones such as the protection zone of Tahtalı Dam, which supplies fresh water to Izmir, the third largest city in Turkey. Greenhouse vegetable production is the major agricultural activity in this area (Menderes Township). However, due to the pollution risk from agriculture, governmental authorities have issued a regulation discouraging the use of chemicals within the collection basin of the dam. An on-farm project was conducted in 2001 to introduce organic greenhouse vegetable production in the Tahtalı Dam preservation area and to serve as a model for other areas in Turkey facing similar ecological problems. Two irrigation levels and four organic fertilizers were tested on the growth of cucumbers (Cucumis sativus cv. Sardes). The four fertilizers were two rates of farmyard and poultry manure (30 and 50 tons ha−1) with and without two organic fertilizers based on either bacteria or algae. During the growing period, pests and diseases were monitored weekly and preparations allowed in organic agriculture were used when necessary. Plant diseases did not create any significant problem, but the pest population, in particular spidermites, increased. No significant differences in cucumber yield were found between the fertilizer and irrigation treatments tested. However, it should be noted that yields from the addition of 30 tons ha−1 of farmyard or poultry manure and organic fertilizers were the same as those for 50 tons ha−1 of manure alone. The average total yield was 13 kg m−2, within an acceptable range for short-term crop production in this region, but 55% lower than a conventional substrate culture trial nearby. However, due to reduced production costs and a price premium for organic products, the organic produce yielded a net return of US$1.12–1.79 per m2 whereas that for conventional bag culture produce was US$0.55 per m2. Our results indicate that, under present conditions, organic greenhouse cucumber production has less environmental impact and is more economic than conventional bag culture, due to reduced chemical input and reduced operating and initial investment costs.

scholarly journals 126 Nutrient Analysis of Organic Fertilizers for Greenhouse Vegetable Production

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 463C-463 ◽  
Author(s):  
Robert G. Anderson ◽  
Robert Hadad
Keyword(s):  
Water Soluble ◽  
Organic Fertilizers ◽  
Plant Production ◽  
Vegetable Production ◽  
Nutrient Analysis ◽  
Nitrogen Levels ◽  
Greenhouse Plant ◽  
Greenhouse Vegetable ◽  
Certified Organic ◽  
Greenhouse Vegetable Production

A segment of the greenhouse crop market would like to obtain vegetables and herbs that are certified organic. The technology for the use of biological controls for insects and diseases is well-developed and a significant part of greenhouse vegetable production. Organic fertilizers, however, have not been well-utilized in organic greenhouse vegetable production. Common organic fertilizers were analyzed for the levels of nutrients when mixed with water for use in greenhouse fertigation. Products derived from algae-Algamin (liquid) and Ohrstrom's Garden Maxicrop (powder), Bat Guano, and products derived from fish waste-GreenAll Fish Emulsion (liquid) and Mermaid's Fish Powder, demonstrated nutrient levels comparable to typical water-soluble fertilizers used for greenhouse plant production. Although the organic fertilizers could not be used as a concentrate for injector systems, readings from a conductivity meter were directly related to nitrate nitrogen levels and could be used for fertilizer management in the capillary mat subirrigation system used for plant production.

scholarly journals The W Model, a Systematic Engineering for Water Source Clearance, Renewable Energy Production, and Ecological Agricuture Development – A Proposal for Sustainable Development

2017 ◽  
Vol 10 (5) ◽  
pp. 143
Author(s):  
Tongyuan Wang
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Organic Fertilizer ◽  
Water Source ◽  
Small Towns ◽  
Living Environment ◽  
Economic Feasibility ◽  
Organic Fertilizers ◽  
Ecological Agriculture ◽  
Agriculture Development

This article proposes a systematic engineering for sustainable economic and ecologic development. This system is deemed to be applicable in any country of the world. The system aims to realize five important objectives: water source clearance, energy saving and emission reduction, renewable energy and organic fertilizer production, and ecological agriculture development, all in large scale and at low cost. The main conception of the new system to reach these goals is the replacement of the conventional sewage treatment approach with more efficient and more ecological process – the natural fermentation of the mixture of the urban sewage and agrarian wastes, such that water body clearance, including water de-eutrophication, green algae prevention and siltation dredging will all be accomplished at virtually a zero cost. Along with this process, the system can produce a vast amount of renewable energy and organic fertilizers, consequently ecological agriculture development in large scale can be realized. As a result, this system will greatly reduce the use of chemical fertilizers thus largely reduce the consumption of fossil energy and the related polluting emissions. This system is thus fully a circular economy model through full west-reuse processes, which ultimately will enhance our life quality with healthier food and living environment. The system is flexible and adaptable to be implemented in either small towns or megacities. The implementation and operation of this system will also benefits employment growth. Lastly, in terms of economic feasibility and profitability, millions to billions of dollars of annual revenue can be generated from the running of this system in a country.

scholarly journals Identification and characterization of proteins, lipids, and metabolites in two organic fertilizer products derived from different nutrient sources

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Jianyu Li ◽  
Xin Zhao ◽  
Laura S. Bailey ◽  
Manasi N. Kamat ◽  
Kari B. Basso
Keyword(s):  
Biochemical Composition ◽  
Organic Fertilizer ◽  
Saturated Fatty Acids ◽  
Soil Health ◽  
Soil Microbial Communities ◽  
Organic Fertilizers ◽  
Vegetable Production ◽  
Limited Information ◽  
Nutrient Sources ◽  
Soil Microbial

AbstractThe biochemical composition of organic fertilizers largely determines their nutrient supply characteristics following soil application as well as their potential impact on soil microbial communities. Yet, limited information is available regarding the biochemical composition of organic fertilizers derived from different nutrient sources. Here, we qualitatively analyzed the presence and abundance of proteins, lipids, and metabolites in a liquid fish fertilizer (LFF) product and a type of granular organic fertilizer (GOF) commonly used in organic vegetable production, using liquid chromatography–tandem mass spectrometry (LC–MS/MS). Our results suggest that the presence and abundance of proteins, lipids, and metabolites differ greatly between GOF and LFF. The qualitative analysis shows LFF as a rich source of metabolites, while complex proteins and long-chain saturated fatty acids are dominant in GOF. The degree of biochemical composition complexity may help explain the varying impacts of different types of organic fertilizers on nutrient availability, soil health, and environmental quality.

scholarly journals Influence of Organic Fertilizers on Productivity of Barley: A Review

2021 ◽  
Author(s):  
Arebu Hussen Yimer
Keyword(s):  
Management Practice ◽  
Organic Fertilizer ◽  
Poultry Manure ◽  
Relevant Information ◽  
Animal Manure ◽  
Yield Component ◽  
Organic Fertilizers ◽  
Research Report ◽  
Hordeum Vulgare L ◽  
The World

Barley (Hordeum vulgare L.) is one of the ancient cereal crops of agriculture in the world and one of the first domesticated cereals and fourth largest cereal crop next to maize, wheat and rice in the world. It contributes seven percent of the total cereal production. The production of barley in Ethiopia reduced by many factors from these biotic factors including rodents, pathogens, diseases, weed, pests, insects and abiotic stress like drought, flooding, temperature stress, salinity, poor management practice, frost, poor soil fertility, agronomic practice etc. among those the most important factors that reduce yield of barley in Ethiopia are the use of inappropriate organic fertilizers. Thus, the main objective of this paper is to review the influence of organic fertilizers on productivity of barely. The review was done by collecting the various published and unpublished materials relevant information from different literature sources like libraries, research report, journals, books and Internet center. As various scholars mentioned organic fertilizers affect the growth, development and yield of barley. The uses of farm yard manure, animal manure, poultry manure and vermi compost considerably improved yield and yield component of barley such as number of tillers per plant, spike length, straw, biomass, grain weight and grain yield. It concludes using organic fertilizer has crucial role for increasing barley production and productivity.

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