UTILIZATION OF NUTRIENTS IN ANAEROBICALLY-PRETREATED SWINE WASTEWATER FOR GREENHOUSE TOMATO PRODUCTION

2013 ◽  
Author(s):  
T. E. Shearin ◽  
J. Cheng ◽  
M. M. Peet ◽  
and D. H. Willits
Keyword(s):  
Swine Wastewater ◽  
Tomato Production ◽  
Greenhouse Tomato

Utilization of treated swine wastewater for greenhouse tomato production

2004 ◽  
Vol 50 (2) ◽  
pp. 77-82 ◽  
Author(s):  
J. Cheng ◽  
T.E. Shearin ◽  
M.M. Peet ◽  
D.H. Willits
Keyword(s):  
Oxygen Demand ◽  
Value Added ◽  
High Strength ◽  
Integrated System ◽  
Treated Wastewater ◽  
Swine Wastewater ◽  
Tomato Production ◽  
Tomato Plants ◽  
Greenhouse Tomato ◽  
Marketable Fruit

An integrated system has been developed to recycle waste organics and treated wastewater from a swine farm to make value-added products and to protect the environment from potential contamination. The farm is a farrow-to-wean swine operation with approximately 4,000 sows. A high-strength wastewater (chemical oxygen demand, 18,000 mg/l; total Khejdal nitrogen, 1,600 mg/l; total phosphorus, 360 mg/l) is produced from the swine operation. An ambient-temperature anaerobic digester has been used to treat the swine wastewater and to produce biogas (from an average 475 m3/day in winter to 950 m3/day in summer). The biogas is combusted in an engine to produce electricity (around 900 kW-hr/day). The digester effluent that is rich in nutrients (N, P, and minerals) is then utilized for fertigation for greenhouse tomato production. A trickling nitrification biofilter has been developed to convert ammonium in the effluent into nitrate. The nitrified anaerobic effluent is used as both fertilizer and irrigation water for approximately 14,400 tomato plants in greenhouses. Experimental data indicate that the tomato greenhouses have used approximately 12 m3 of the effluent and 3.84 kg nitrogen per day. At the same time, the greenhouses have a daily yield of 520 kg (37 g/plant) of marketable fruit.

Growth, photosynthesis and productivity of greenhouse tomato cultivated in open or closed rockwool systems

2002 ◽  
Vol 82 (4) ◽  
pp. 771-780 ◽  
Author(s):  
X. Hao ◽  
A. P. Papadopoulos
Keyword(s):  
Lycopersicon Esculentum ◽  
Plant Biomass ◽  
Alternative Methods ◽  
Marketable Yield ◽  
Tomato Production ◽  
Greenhouse Tomato ◽  
Tomato Yield ◽  
Nutrient Film Technique ◽  
Closed Systems ◽  
Environmentally Sound

Two full spring season tomato crops (Lycopersicon esculentum Mill. “Trust”) were grown in an open rockwool system with standard rockwool feeding formulae (O-R; conventional method), and in closed rockwool systems with standard rockwool (C-R) or Nutrient Film Technique (C-NFT) feeding formulae (modified in 1997) in 1996 and 1997 to examine the feasibility of a fully closed rockwool production system with appropriate feeding formulae. The closed rockwool system with optimized feeding formulae achieved high marketable yield, similar to that of the open rockwool system. There were no differences in early plant growth, plant biomass or biomass partitioning, and in total fruit yield, size and grades except for the closed rockwool system with the standard rockwool feeding formulae (C-R), which had lower yield than C-NFT in the last month of harvest in 1996. The photosynthesis of old foliage was higher and the root systems at the end of the experiments were rated healthier in plants grown in the closed (C-R and C-NFT) systems than in plants grown in the open (O-R) system. Over 30% of water and fertilizer was saved with the closed systems in comparison to the conventional open system. These results demonstrated that closed rockwool systems with optimized nutrient feedings are economically and environmentally sound alternative methods for greenhouse tomato production in Ontario. Key words: Lycopersicon esculentum, tomato, yield, recycling, rockwool, greenhouse

IRRIGATION MANAGEMENT IN GREENHOUSE TOMATO PRODUCTION ON ROCKWOOL

2008 ◽  
pp. 521-528 ◽  
Author(s):  
A.P. Papadopoulos ◽  
U. Saha ◽  
X. Hao ◽  
S. Khosla
Keyword(s):  
Irrigation Management ◽  
Tomato Production ◽  
Greenhouse Tomato

scholarly journals A Comparison of Disinfectants to Prevent Spread of Potyviruses in Greenhouse Tomato Production

2011 ◽  
Vol 12 (1) ◽  
pp. 19 ◽  
Author(s):  
W. M. Wintermantel
Keyword(s):  
Sodium Hypochlorite ◽  
Quaternary Ammonium ◽  
Infected Plant ◽  
Transmission Efficiency ◽  
Aphid Species ◽  
Vegetable Crops ◽  
Greenhouse Production ◽  
Tomato Production ◽  
Greenhouse Tomato ◽  
Direct Inoculation

Potyviruses, transmitted by a diverse array of common aphid species, infect a broad range of vegetable crops, and can be problematic in greenhouse tomato production. Once introduced, these viruses are believed to be transmitted plant-to-plant during pruning operations, and can infect large sections of a greenhouse, resulting in significant losses in fruit quality and yield. Several methods are used for virus management in greenhouse production, including rouging of diseased plants and treatment of tools and facilities with virucides to eradicate the virus responsible. To clarify potyvirus transmission efficiency from an infected source during pruning operations, experiments were conducted using direct and serial mechanical inoculation of Potato virus Y (PVY) using a scalpel dipped in a suspension of PVY-infected plant sap. Tests demonstrated that both serial and direct inoculation resulted in significant PVY transmission, but that transmission rates declined after the first few plants in serial transmission. Additional tests evaluated the efficiency of two virucides, a quaternary ammonium solution and sodium hypochlorite, for virus inactivation during pruning operations using a range of concentrations and time points. Results demonstrated that 0.5% sodium hypochlorite treatment for two seconds was sufficient for virus control, and superior to treatment with quaternary ammonium solutions. Accepted for publication 20 December 2010. Published 21 February 2011.

scholarly journals Greenhouse Tomato Producers’ Views on Soilless Agriculture in Antalya

2018 ◽  
Vol 6 (4) ◽  
pp. 460
Author(s):  
Bilge Gözener ◽  
Halime Dereli
Keyword(s):  
Food Industry ◽  
Agricultural Land ◽  
Raw Material ◽  
Vegetable Production ◽  
Material Source ◽  
Greenhouse Production ◽  
Tomato Production ◽  
Greenhouse Tomato ◽  
Tomato Paste ◽  
Greenhouse Vegetable

Tomato comes as the most commonly produced, consumed and subject for trading in the world. Alongside fresh consumption, on the other hand it forms the most significant raw material source of food industry, especially for tomato paste, frozen and dried vegetable-fruit and canned food industry. Turkey's greenhouse vegetable production field for 2016 year is 675173 decars and Antalya forms 51% of this field. Tomato forms 61.72% of Antalya's greenhouse production. The main material of the research consists of interviews made with producers resided in 5 villages/towns, where greenhouse tomato production is carried out densely in Antalya city, Alanya district. In 48 villages and towns, greenhouse tomato production is carried out, according to the official records. In the chosen areas, 365 producers exist. 20% of these producers (73) form the sample size. In the research, it was determined that the producers' average agricultural land possession is 9.13 decars and in 40.53% of these areas they grew tomatoes. None of these producers are engaged in contractual growing. All of the yield is produced for the edible (as table-top item). After the harvest, all of the products are sold in the wholesales market in county and city. 7.89% of the producers have no information on soilless agriculture, as 10.52% of them think that it has no advantages and 73.36% of them recommend traditional agriculture.

A DECISION MODEL FOR HYDROPONIC GREENHOUSE TOMATO PRODUCTION

1998 ◽  
pp. 493-504 ◽  
Author(s):  
T.H. Short ◽  
A. El-Attal ◽  
H.M. Keener ◽  
R.P. Fynn
Keyword(s):  
Decision Model ◽  
Tomato Production ◽  
Greenhouse Tomato

Effect of active solar heating system on microclimate, development, yield and fruit quality in greenhouse tomato production

2021 ◽  
Vol 165 ◽  
pp. 237-250
Author(s):  
A. Bazgaou ◽  
H. Fatnassi ◽  
R. Bouharroud ◽  
K. Ezzaeri ◽  
L. Gourdo ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Heating System ◽  
Solar Heating ◽  
Tomato Production ◽  
Greenhouse Tomato

SIMULTOM: A DIAGNOSTIC TOOL FOR GREENHOUSE TOMATO PRODUCTION

2002 ◽  
pp. 219-226 ◽  
Author(s):  
C. Sauviller ◽  
W. Baets ◽  
H. Pien ◽  
R. Lemeur
Keyword(s):  
Diagnostic Tool ◽  
Tomato Production ◽  
Greenhouse Tomato
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