plant disease Articles
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The sensitivity ratio: A superior method to compare plant and pathogen screening tests
There are numerous plant disease-screening methods used to identify resistance in various crops. It is common practice to prefer the screening method with the smallest root mean square error (RMSE), least-significant difference (LSD), or coefficient of variation (CV). However, valid comparison based on the RMSE or LSD requires both methods to have the same scale while the CV is only applicable if ...
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Use of plant growth-promoting bacteria for biocontrol of plant diseases: principles, mechanisms of action, and future prospects
Laboratoire de Stress, Défenses et Reproduction des Plantes, Unité de Recherche Vignes et Vins de Champagne, UPRES EA 2069, UFR Sciences, Université de Reims Champagne-Ardenne, 51687 Reims Cedex 2, France, Agroscope FAW Wädenswil, Swiss Federal Research Institute for Fruit Production, Viticulture, and Horticulture, CH-8820 Wädenswil, Switzerland, Department of Horticulture, Virginia Polytechnic ...
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Vegetation: A source of air fungal bio-contaminant
Airborne fungal counts and types were examined in three selected regions in Egypt. Two of the sampling sites are rural areas, one cultivated with chamomile and the second with vegetable. The third site is located in an urban area. A sedimentation method was used to isolate airborne fungal spores. Airborne fungal spore counts averaged 71\pm 19, 64\pm 14 and 175\pm 79 cfu/p/h in the urban, ...
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Use of plant growth-promoting bacteria for biocontrol of plant diseases: Principles, mechanisms of action, and future prospects
Pathogenic microorganisms affecting plant health are a major and chronic threat to food production and ecosystem stability worldwide. As agricultural production intensified over the past few decades, producers became more and more dependent on agrochemicals as a relatively reliable method of crop protection helping with economic stability of their operations. However, increasing use of chemical ...
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Cultivar type, plant population, and ascochyta blight in chickpea
Integrated management strategies are required to minimize ascochyta blight, a fungal disease caused by Ascochyta rabiei (Pass.) Labrousse [teleomorph, Didymella rabiei (Kovachevski) v. Arx] in chickpea (Cicer arietinum L.). This study determined the effect of cultivars varying in plant architecture and plant population density (PPD) on the severity of ascochyta blight. Four desi chickpea (with ...
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Detecting plant root diseases & pests
Soil-borne pests and diseases are harder to detect than those on the aerial parts of a plant. Visible symptoms in leaves and stem appear only in the final stages of the attacks. If plants are treated at this point, it may be difficult to avoid plant injury, as plants could already have been severely impacted. Early detection and identification are key to prevent crop loss. There are, however, ...
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An economic analysis of alfalfa harvest methods when infested with verticillium wilt
Verticillium wilt is a disease that negatively affects alfalfa fields throughout the northern United States. This disease is caused by the fungus Verticillium albo-atrum that, once introduced into alfalfa fields, spreads rapidly, becomes difficult to control, and causes substantial plant yield loss. This disease can be extremely costly for alfalfa hay producers, especially for producers where ...
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Pig manure organic fertilizer production line has great effect and obvious advantages
In agricultural production activities, the breeding industry is also a group that can not be ignored, and the amount of waste water produced every day is also huge. If we can effectively use these "wastes", it can not only help solve the problem of stacking, but also increase revenue. Take pig manure for example, the use of pig manure organic fertilizer production line can effectively solve the ...
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Plant Sciences in Agriculture
Plant pathogens Microorganisms, also called as microbes, live in every part of the biosphere, including soil, water, and air. Plant pathogens are the microbes that infect plants and cause diseases. In history, some plant diseases led to tremendous negative impacts on society. In 1845, potato blight disease was prevalent in all potato growing regions in Ireland. Phytophthora infestans, a fungus, ...
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Playing hide and seek below the soil
Below the soil of a diverse grassland area you’ll find a jungle of plant roots. It is also home to a wide variety of bacteria and fungi, of which some are pathogenic and looking for a host in the tangle of roots. It appears that this is much more difficult when there is a larger diversity of plants as the host plant is more able to hide among the varied crowd. Greater plant diversity ...
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Production status of bio organic fertilizer
The fertilizer produced by bio organic fertilizer equipment can improve soil ecological environment and change soil microbial flora, and play a more important role in reducing crop diseases and insect pests. In the process of microbial growth and reproduction, it can secrete a variety of antibiotics and plant growth and elements. It can not only inhibit the activities of plant pathogenic ...
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Genetic mapping of sheath blight resistance QTLS within tropical Japonica rice cultivars
Most commercial cultivars of rice (Oryza sativa L.) are susceptible to sheath blight (SB), a devastating fungal disease causing significant losses in grain yield and quality. There are limited sources of genetic resistance adapted to U.S. growing conditions, and no commercial long grain cultivar of rice is currently available in the United States with a high level of SB resistance. Sheath blight ...
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Benefits of applying organic fertilizer to oil palm
Oil palm is a perennial evergreen gymnospermous woody plant. It not only consumes a large amount of nutrients, but also has characteristics of nutrient demand. In addition to N, P, K and trace elements, the demand for lignocellulose is higher. It is not enough to plant oil palm only by using chemical compound fertilizer. The predatory use of soil will eventually lead to the deterioration of soil ...
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The difference between organic fertilizer and chemical fertilizer
Difference between organic fertilizer and chemical fertilizer Chemical fertilizer, manufactured by chemical or physical methods, containing one or more nutrient elements for crop growth. Also known as inorganic fertilizers, including nitrogen, phosphate, potash, micronutrients, compound fertilizers, etc. It has strong pertinence and quick effect. There are many kinds of chemical fertilizers, the ...
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The difference between organic fertilizer and chemical fertilizer
The difference between organic fertilizer and chemical fertilizer Difference Chemical fertilizer, manufactured by chemical or physical methods, containing one or more nutrient elements for crop growth. Also known as inorganic fertilizers, including nitrogen, phosphate, potash, micronutrients, compound fertilizers, etc. It has strong pertinence and quick effect. There are many kinds of chemical ...
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Hydroponic Spacer, the solution to Crazy Roots
Among the many diseases that can affect the root zone of the plant, bacterial diseases stand out for being potentially very harmful.. The main problem of these diseases is that there is no effective control of them through chemical treatments, so once the disease takes place it causes severe damage to the crop, reducing production and quality. The most effective way to avoid the negative impact ...
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Hydroponic Spacer, The Solution To Crazy Roots
Among the many diseases that can affect the root zone of the plant, bacterial diseases stand out for being potentially very harmful.. The main problem of these diseases is that there is no effective control of them through chemical treatments, so once the disease takes place it causes severe damage to the crop, reducing production and quality. The most effective way to avoid the negative impact ...
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Researchers Analyze Rapeseed Thioglycoside Transport Mechanism to Assist High-quality Breeding
Recently, Liu Shengyi, a researcher at the Institute of Oil Materials, Chinese Academy of Agricultural Sciences, and Yang Qingyong, a professor at the School of Information, Huazhong Agricultural University, collaborated to develop a new idea/method for the functional identification of multi-copy genes, and based on this identification, the important transporter BnaA06. GTR2 of glucosinolates in ...
By Lifeasible
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What is it about this soil that protects plants from devastating disease?
Figuring out why certain soils keep plant parasites at bay could be a boon for agriculture around the globe Plants around the world are constantly under attack — often with big implications for humans. In the 1960s, millions of elm trees in Britain, France and the U.S. fell victim to Dutch elm disease, which clogs the vessels that carry life-giving water to the trees’ leaves. ...
By Ensia
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Researchers model ways to control deadly maize disease
Researchers have used mathematical modelling to develop techniques to combat two co-infecting viruses causing maize lethal necrosis (MLN) in Kenya. According to researchers who conducted the new study, because maize is a staple crop in Sub-Saharan Africa, the spread of MLN is threatening food security in the region. Nik Cunniffe, a co-author and a lecturer in mathematical biology at the ...
By SciDev.Net
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