Effect of soil amendments and biological control agents (BCAs) on soil-borne root diseases caused by Pyrenochaeta lycopersici and Verticillium albo-atrum in organic greenhouse tomato production systems

Ethephon (2-chloroethylphosphonic acid) was applied to single cluster greenhouse tomato crops (1000 ppm) at the green mature stage of fruit development or when 35% of the plants had fruits at the breaker stage. Fruits were harvested at the pink stage. Untreated fruit were harvested from 95 to 116 days after sowing whereas fruit from the green mature ethephon treatment were harvested from 92 to 102 days, three days earlier and with a reduction in the harvest window from 22 to 11 days. Fruit treated with ethephon at 35% breaker were harvested at the same time as untreated fruit, but harvest was completed after only 12 days. Fruit yield from the green mature ethephon treatment was reduced by about 30%, but there was no significant difference in fruit yield as a result of ethephon treatment at 35% breaker. Fruit color, firmness and soluble solids were evaluated one and six days after harvest. Fruit firmness and soluble solids were unaffected by treatment; however, fruit from the ethephon treatments were significantly redder in color. In a second experiment, ethephon was applied at 500 or 1000 ppm when 100% of the plants had fruit at the breaker stage. Fruit were harvested over a 7-day time interval compared to untreated fruit that were harvested over 14 days, and there was a small but significant increase in fruit yield for the 1000 ppm treatment. Both ethephon treatments also increased fruit soluble solids. For limited cluster tomato production systems, ethephon is effective in reducing the harvest window without loss in postharvest fruit quality.

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Effects of two different soil amendments on the biocontrol efficacy of biological control agents (BCA) against Ralstonia wilt on ginger

AFRICAN JOURNAL OF BIOTECHNOLOGY ◽

10.5897/ajb11.4317 ◽

2012 ◽

Vol 11 (39) ◽

Author(s):

Wei Yang

Keyword(s):

Biological Control ◽

Soil Amendments ◽

Biological Control Agents ◽

Biocontrol Efficacy

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Evaluation of Tomato Production Systems in Terms of Energy Use Efficiency and Economical Analysis in Iran

Notulae Scientia Biologicae ◽

10.15835/nsb346279 ◽

2011 ◽

Vol 3 (4) ◽

pp. 58-65 ◽

Cited By ~ 10

Author(s):

Parviz REZVANI MOGHADDAM ◽

Hassan FEIZI ◽

Farzad MONDANI

Keyword(s):

Energy Efficiency ◽

Total Energy ◽

Open Field ◽

Production System ◽

Energy Use ◽

Production Systems ◽

Tomato Production ◽

Energy Use Efficiency ◽

Greenhouse Tomato ◽

Use Efficiency

Efficient use of energy helps to achieve improved production and productivity, and contributes to economy, profitability and competitiveness of agricultural sustainability. The aim of the present study was to compare open field and greenhouse tomato production systems in terms of energy efficiency, energy intensiveness, energy productivity, benefit to cost ratio and amount of renewable and non-renewable energy uses. Data were collected from 128 and 16 open field and greenhouse tomato growers, respectively, by using a face-to-face questionnaire in 2010. The results showed that the total energy requirement under open field and greenhouse systems were 47647.12 and 2102678.73 MJ ha-1, respectively. The share of direct, indirect, renewable and non-renewable energies from total energy input which average in open field and greenhouse production systems were 74%, 26%, 17% and 83%, respectively. Energy use efficiency was achieved 1.42 and 0.18 in open field and greenhouse, respectively. The benefit to cost ratios of 2.33 in open field and 3.06 in greenhouse was recorded. Based on the present results, open field tomato production system had higher energy efficiency in comparison with greenhouse tomato production system while greenhouse system had a higher economical benefit.

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Pathogenomics Characterization of an Emerging Fungal Pathogen, Fusarium oxysporum f. sp. lycopersici in Greenhouse Tomato Production Systems

Frontiers in Microbiology ◽

10.3389/fmicb.2020.01995 ◽

2020 ◽

Vol 11 ◽

Author(s):

Tika B. Adhikari ◽

Anne Gao ◽

Thomas Ingram ◽

Frank J. Louws

Keyword(s):

Fusarium Oxysporum ◽

Fungal Pathogen ◽

Production Systems ◽

Tomato Production ◽

Greenhouse Tomato

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Yellow Brazilian Pepper-tree Leaf Galler (suggested common name) Calophya latiforceps Burckhardt (Insecta: Hemiptera: Calophyidae: Calophyinae)

EDIS ◽

10.32473/edis-in1186-2017 ◽

2017 ◽

Vol 2017 (6) ◽

Author(s):

James P. Cuda ◽

Patricia Prade ◽

Carey R. Minteer-Killian

Keyword(s):

Biological Control ◽

North America ◽

Natural Enemies ◽

Host Plants ◽

Classical Biological Control ◽

Biological Control Agents ◽

Pepper Tree ◽

Brazilian Pepper ◽

Close Relatives ◽

Tree Leaf

In the late 1970s, Brazilian peppertree, Schinus terebinthifolia Raddi (Sapindales: Anacardiaceae), was targeted for classical biological control in Florida because its invasive properties (see Host Plants) are consistent with escape from natural enemies (Williams 1954), and there are no native Schinus spp. in North America. The lack of native close relatives should minimize the risk of damage to non-target plants from introduced biological control agents (Pemberton 2000). [...]

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