scholarly journals Biological Control of Citrus Canker: New Approach for Disease Control

2020 ◽  
Author(s):  
Sonia Villamizar ◽  
Juan Carlos Caicedo
Keyword(s):  
Biological Control ◽  
Disease Control ◽  
Citrus Canker ◽  
New Approach

TRANSPLANT QUALITY, DISEASE CONTROL AND YIELD IN FRESH MARKET TOMATO AS AFFECTED BY PACLOBUTRAZOL AND COMMERCIAL BIOLOGICAL CONTROL AGENTS

2004 ◽  
pp. 283-289 ◽  
Author(s):  
S. Dikshit ◽  
M.A. Bennett ◽  
R.J. Precheur ◽  
M.D. Kleinhenz ◽  
R.M. Riedel
Keyword(s):  
Biological Control ◽  
Disease Control ◽  
Biological Control Agents ◽  
Fresh Market

scholarly journals Multiple Treatment Meta-Analysis of Products Evaluated for Control of Fire Blight in the Eastern United States

2011 ◽  
Vol 101 (5) ◽  
pp. 512-522 ◽  
Author(s):  
H. K. Ngugi ◽  
B. L. Lehman ◽  
L. V. Madden
Keyword(s):  
United States ◽  
Biological Control ◽  
Disease Control ◽  
Plant Defense ◽  
Fire Blight ◽  
Pantoea Agglomerans ◽  
Effect Sizes ◽  
Eastern United States ◽  
The Mean ◽  
Prohexadione Calcium

The aim of this analysis was to estimate the effect sizes and consistency of products evaluated for fire blight control in the eastern United States over the last decade. Because only 3% of the 69 studies published from 2000 to 2008 explicitly presented a measure of within-study variability, a method for estimating the least significant difference (LSD) and, hence the sampling variance, for studies with at least two significant mean separations in the presented mean multiple comparisons was developed. Lin's concordance analysis indicated that the estimated LSD was an accurate predictor of the actual LSD based on 35 studies in a calibration evaluation (ρc = 0.997). Separate multi-treatment random-effects meta-analyses were performed for three control categories: antibiotics, biological control, and plant defense-activating products and mean log response ratios relative to the nontreated controls ([Formula: see text]) were computed for each treatment and then back-transformed to obtain the mean percent disease control. None of the products evaluated performed as well as streptomycin, the standard product for fire blight control, for which the mean disease control was 68.6%. As a group, experimental antibiotics provided the best fire blight control with mean effect sizes ranging from 59.7 to 61.7%. Among the biological controls, the best control was noted for treatments combining the antibiotic streptomycin with a product based on Pantoea agglomerans (55.0% mean disease reduction) or Bacillus subtilis (53.9%). Mean disease control was 31.9, 25.7, and 22.6%, respectively, for products based on B. subtilis, Pantoea agglomerans, and Pseudomonas fluorescens without an antibiotic, suggesting that the higher efficacy of the combination treatments was due to the antibiotic. Among the plant defense-activating products, prohexadione calcium had the highest and most consistent effect size (50.7% control), while other products provided modest mean disease control of between 6.1 and 25.8%. Percent control values were significantly moderated by study location and cultivar used in the study, and were smaller, but more variable, when products were tested under high disease intensity compared with low disease intensity. Results indicate that wide-scale use of biological control and plant defense-activating products in the eastern United States is likely to remain low.

Biodegradation of oxalic acid: A potential new approach to biological control

1998 ◽  
Vol 30 (8-9) ◽  
pp. 1195-1197 ◽  
Author(s):  
Martin B Dickman ◽  
Iian Chet
Keyword(s):  
Biological Control ◽  
Oxalic Acid ◽  
New Approach

scholarly journals Use of Trichaderma sp. For Biological Control of Diplodia Disease in Siam Banjar Citrus

2018 ◽  
Vol 4 (2) ◽  
pp. 38-43
Author(s):  
Abdul Mujib
Keyword(s):  
Biological Control ◽  
Disease Control ◽  
Observation Time ◽  
High Yield ◽  
Botryodiplodia Theobromae ◽  
Trichoderma Sp ◽  
Two Factors

Siam Banjar Citrus has a very bright prospect to be develoved, becomes a contributor to the national fruit products with various types and varieties and has the production that does not depend on seasons. Diplodia disease in citrus still becomes a major problem because it causes loss of high yield and affecth the gain of  production. The disease, caused by Botryodiplodia theobromae pat., indicates symptoms of lesions on citrus trunk, such as narrow lines on the trunk, and can cause plant death due to the disruption of transport of water and nutrients from the soil to the plants. The objectives of the research were to find out the effects of the interaction between Trichokompos fertilizer sp.,to determine the combination of Trichokompos fertilizer and Tricjoderma sp. Solution for Diplodia disease control. The study was conducted from january to april 2012, in Rantau Badauh sub- district. This experiment employed Randomized Blok Design (RBD) consisting of three replications and two factors , namely the dosage of  Trichokompos fertilizer (0 kg, 10 kg and 20 kg), and the dosage of  Trichoderma sp. (0 g/l lt EKG, 50 g/l lt EKG , 100 g/l lt EKG, 150g/l lt EKG and 200 g/l lt EKG). The observations were conducted on the presence of fungi and the measurement of bark lesions. The result showed  that there was no intraction between the two treatmeants, and the significant effect of the application of  Trichoderma sp. Against the widespread symptoms of  doplodia at all observation time with the best dosage was 50 g/l ECG. The results of the regression indicated that the higher concentration and the longer time of the applicatin of Trichoderma sp. Would reduce the widespread of symptoms caused by diplodia in citrus.

Bacterial Panicle Blight and Burkholderia glumae: from pathogen biology to disease control

2020 ◽  
Author(s):  
Laura Ortega ◽  
Clemencia Rojas
Keyword(s):  
Biological Control ◽  
Disease Resistance ◽  
Disease Control ◽  
Virulence Factors ◽  
Plant Disease Resistance ◽  
Plant Disease ◽  
Rice Production ◽  
Burkholderia Glumae ◽  
Insight Into ◽  
Panicle Blight

Bacterial Panicle Blight (BPB), caused by the bacterium Burkholderia glumae, has affected rice production worldwide. In spite of its importance, neither the disease nor its causal agent are well understood. Moreover, methods to manage BPB are still lacking. Nevertheless, the emerging importance of this pathogen has stimulated research to identify the mechanisms of pathogenicity, to gain insight into plant disease resistance, and to develop strategies to manage the disease. In this review, we consolidate current information regarding the virulence factors that have been identified in B. glumae and present a model of the disease and the pathogen. We also provide an update on the current research status to develop methods to control the disease especially through biological control approaches and through the development of resistant cultivars.

RESTORATIVE BIOLOGICAL CONTROL - A PROMISING NEW APPROACH, BUT CAN WE PROVE IT?

2011 ◽  
pp. 269-274
Author(s):  
K. Everett ◽  
J. Rees-George ◽  
S. Pushparajah ◽  
I. Hallett ◽  
J.L. Vanneste ◽  
...  
Keyword(s):  
Biological Control ◽  
New Approach

scholarly journals The Role of Bacillus-Based Biological Control Agents in Integrated Pest Management Systems: Plant Diseases

2004 ◽  
Vol 94 (11) ◽  
pp. 1272-1275 ◽  
Author(s):  
B. J. Jacobsen ◽  
N. K. Zidack ◽  
B. J. Larson
Keyword(s):  
Biological Control ◽  
Disease Management ◽  
Disease Control ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Integrated Management ◽  
Insect Pest ◽  
Plant Diseases ◽  
Biological Control Agents ◽  
Management Tools

Bacillus-based biological control agents (BCAs) have great potential in integrated pest management (IPM) systems; however, relatively little work has been published on integration with other IPM management tools. Unfortunately, most research has focused on BCAs as alternatives to synthetic chemical fungicides or bactericides and not as part of an integrated management system. IPM has had many definitions and this review will use the national coalition for IPM definition: “A sustainable approach to managing pests by combining biological, cultural, physical and chemical tools in a way that minimizes economic, health and environmental risks.” This review will examine the integrated use of Bacillus-based BCAs with disease management tools, including resistant cultivars, fungicides or bactericides, or other BCAs. This integration is important because the consistency and degree of disease control by Bacillus-based BCAs is rarely equal to the control afforded by the best fungicides or bactericides. In theory, integration of several tools brings stability to disease management programs. Integration of BCAs with other disease management tools often provides broader crop adaptation and both more efficacious and consistent levels of disease control. This review will also discuss the use of Bacillus-based BCAs in fungicide resistance management. Work with Bacillus thuringiensis and insect pest management is the exception to the relative paucity of reports but will not be the focus of this review.

Relationships between copper content in orange leaves, bacterial biofilm formation and citrus canker disease control after different copper treatments

2017 ◽  
Vol 92 ◽  
pp. 182-189 ◽  
Author(s):  
María Alejandra Favaro ◽  
Roxana Andrea Roeschlin ◽  
Gustavo Gabriel Ribero ◽  
Roxana Lorena Maumary ◽  
Laura Noemí Fernandez ◽  
...  
Keyword(s):  
Disease Control ◽  
Biofilm Formation ◽  
Copper Content ◽  
Citrus Canker ◽  
Bacterial Biofilm ◽  
Canker Disease ◽  
Citrus Canker Disease

scholarly journals Searching for Novel Fungal Biological Control Agents for Plant Disease Control Among Endophytes

2019 ◽  
pp. 25-51 ◽  
Author(s):  
David B. Collinge ◽  
Hans J. L. Jørgensen ◽  
Meike A. C. Latz ◽  
Andrea Manzotti ◽  
Fani Ntana ◽  
...  
Keyword(s):  
Biological Control ◽  
Disease Control ◽  
Plant Disease ◽  
Biological Control Agents ◽  
Plant Disease Control

scholarly journals Alternative disease management strategies for organic apple production in the United Kingdom

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Lucas Alexander Shuttleworth
Keyword(s):  
Climate Change ◽  
Biological Control ◽  
United Kingdom ◽  
Disease Management ◽  
Disease Control ◽  
Disease Ecology ◽  
Biological Control Agents ◽  
Active Ingredients ◽  
The United Kingdom ◽  
Apple Production

AbstractApple is a globally important tree fruit. In the United Kingdom (UK) and mainland Europe, there is ongoing consumer and environmental concern regarding over-reliance on conventional chemicals for disease control. This has resulted in an increase in withdrawal of active ingredients and legal use restrictions over recent years. The loss of active ingredients can be problematic for growers, who have relied on the generally more predictable and efficacious management that results from using conventional chemicals. Organic disease management methods are generally more sustainable over the long term as organic methods have fewer negative impacts on the environment and on human health. Key diseases of organic UK apple production include scab, European canker, powdery mildew, apple replant disease, and brown rot/blossom wilt. The recommended organic control measures depend on the disease. Measures range from the use of host resistance, rootstock and scion cultivar selection, planting location of trees, application of biological control agents, soil amendments, cultural management, postharvest treatments, disease modelling and forecasting. The challenge when using organic methods is results are often more variable and less predictable than when using conventional chemicals. Biological control agents, for example, often require more applications than chemicals, need correct timing to work effectively, and can be sensitive to weather and orchard management. Additionally, a thorough understanding of disease ecology by growers is helpful for more effective implementation of organic control methods. Invasive pathogens not currently present in the UK that may affect apple production including Xylella fastidiosa and Valsa mali, and the potential effects of climate change on pathogens already present such as Erwinia amylovora (fireblight) are discussed. The consequences of climate change are difficult to predict due to the changeable nature of the weather and the variation in factors contributing to climate change. However, a warming planet and more unpredictable weather patterns may favour range expansion of pathogens, while increasing plant stress and susceptibility. This review presents various methods that can be applied as alternatives to conventional chemicals for disease control in organic apple production to provide economic efficiency, environmental sustainability, and the supply of safe nutritious food.

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