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The influence of sodium bicarbonate and calcium chloride applied individually or combined with CBY on early blight dise- ase incidence and severity of potato plants under field conditions during two successive summer seasons 2007/2008 A 

The influence of sodium bicarbonate and calcium chloride applied individually or combined with CBY on early blight dise- ase incidence and severity of potato plants under field conditions during two successive summer seasons 2007/2008 A 

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Article
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The suppressive effect of sodium and calcium salts applied individually or combined with the yeast Saccharomyces cerevisiae against Alternaria solani the causal agent of early blight disease of potato was evaluated under laboratory, greenhouse and field conditions. In vitro test a complete inhibition in fungal growth was observed at concentration o...

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... promising treatments for reducing both disease incidence and severity in pot experiment was applied un- der natural field conditions during two successive grow- ing seasons (Table 3). Although the fungicide treatment reduced significantly early blight incidence and severity (14.3 and 34.7%) compared with control (17.6 and 39.3%), all applied treatments had a superior effect in this respect. ...

Citations

... Several documents are available proving this fact. (Hervieux et al. 2002, Jamar et al. 2007, Nahal and Mokhtar 2009, Turkkan 2013.). ...
... Four inorganic salts namely calcium chloride, sodium bicarbonate, potassium bicarbonate and ammonium bicarbonate, have been used for their antifungal activity against mycelial growth and control of apple fruit decay caused by A.porri and A. mali. In all salt treatments, linear growth of fungi decreased with increasing salt concentrations (Table 2) and these results agree with Nahal et al (2009) who stated that the application of calcium chloride or sodium bicarbonate considerably reduced early blight and its severity by increasing their concentrations. Previous research showed that raising sodium bicarbonate concentrations caused in a constant improvement in efficacy Smilanick 1998, 2001). ...
Article
Full-text available
Apple rot is one of the most important apple diseases worldwide. The disease causes significant losses in both the quantity and quality of apple fruits. In this study, the antifungal activity of hot water treatment and salts were investigated against apple fruit rots caused by Alternaria porri and Alternaria mali. Linear growth of tested fungi was inhibited at 5ºC, however, growth was increased by increasing storage temperature degree from 15ºC to 25ºC and decreased at 35ºC. On the other hand, hot water treatment at 55ºC significantly reduced the decay index and severity of infection. When salts such as potassium bicarbonate (KCO3), calcium chloride (CaCl2), sodium bicarbonate (NaHCO3) and ammonium bicarbonate (NH4CO3) was applied, a significant reduction in linear growth and fruit rot incidence was noticed using potassium bicarbonate. Calcium chloride, ammonium bicarbonate and sodium bicarbonate greatly inhibited growth of A. porri and A. mali. The most effective inhibitor of fruit decay was potassium bicarbonate and calcium chloride.
... In contemporary study, sodium (Na) contents were observed higher in un-inoculated resistant/ susceptible cultivars and lower in inoculated plants. El-Mougy& Abdel-Kader (2009) reported that the application of sodium against Alternaria solani resulted in the fungal growth inhibition in the in-vitro experiments. Zinc plays a key role among plant's minerals as it is an important component of many enzymes and proteins which triggers the growth and production hormones along with internode elongation. ...
Article
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The current research was conducted to investigate the alterations in the mineral status in the leaves of tomato plants against early blight (EB) caused by Alternaria solani. Six tomato varieties; viz. Riograndae, Roma and Basket (resistant) and T-88572, BHN-961 and BHN-1021(susceptible) were inoculated with a blend of five isolates of Alternaria solani, collected from different regions of Faisalabad District. These six varieties for mineral profiling were selected after two years screening from twenty-five varieties of tomatoes under field conditions. These varieties were sown in pots and artificial inoculation was performed to develop disease in inoculated type of tomato plants while distilled water was applied on un-inoculated type of plants. Newly infected leaves from upper, middle and lower parts of tomato plants from resistant and susceptible groups were used to prepare sample for mineral analysis at p ≤ 0.05 and variation in mineral profiling of resistant and susceptible groups of tomato plants was determined through Nested Structured Design. Significant variation was observed in inoculated (3.12, 0.48 %, 1.17, 0.14, 0.42, 0.21, 0.69 and 1.49 ppm and un-inoculated type (8.67, 1.61%, 10.45, 0.22, 1.75, 1.98, 3.09 and 3.39 ppm) while resistant group expressed 6.59, 1.19%, 8.13, 1.973, 1.69, 1.26, 1.36, 2.43 and 2.87ppm and susceptible group exhibited 5.19, 0.91%, 5.69, 1.693, 1.24, 0.91,0.83, 1.35 and 2.22 ppm with respect to NPK, Ca, Mg, Na, Zn, Iron and copper. Resistant variety, Riograndae expressed maximum amount while T-88572 exhibited minimum amount of all mineral contents. Alterations in the mineral profiling in leaves of tomato plants can be used by researchers as biochemical markers for identification and development of resistant source against early blight of tomato and for the development of ecofriendly management strategy towards A. solani.
... Extracellular lytic enzymes such as chitinases, glucanase, protease, etc, producing bacterium holds a great promise as biological disease control due to their increased activities of mycoparasitism. For example, chitinolytic bacteria, Bacillius subtilis, and P. fluorescens and their chitinase enzymes exhibited antagonisim toward crop root rot pathogens (Rhizoctonia solani and Fusarium solani) in vitro assay (El-Mougy et al., 2009). Several authors have reported antifungal chitinase of B. subtilis demonstrating powerful growth inhibitory actions against several pathogenic fungi (Kobayashi et al., 2002;Yang et al., 2009). ...
... Extracellular lytic enzymes such as chitinases, glucanase, protease, etc, producing bacterium holds a great promise as biological disease control due to their increased activities of mycoparasitism. For example, chitinolytic bacteria, Bacillius subtilis, and P. fluorescens and their chitinase enzymes exhibited antagonisim toward crop root rot pathogens (Rhizoctonia solani and Fusarium solani) in vitro assay (El-Mougy et al., 2009). Several authors have reported antifungal chitinase of B. subtilis demonstrating powerful growth inhibitory actions against several pathogenic fungi (Kobayashi et al., 2002;Yang et al., 2009). ...
... Extracellular lytic enzymes such as chitinases, glucanase, protease, etc, producing bacterium holds a great promise as biological disease control due to their increased activities of mycoparasitism. For example, chitinolytic bacteria, Bacillius subtilis, and P. fluorescens and their chitinase enzymes exhibited antagonisim toward crop root rot pathogens (Rhizoctonia solani and Fusarium solani) in vitro assay (El-Mougy et al., 2009). Several authors have reported antifungal chitinase of B. subtilis demonstrating powerful growth inhibitory actions against several pathogenic fungi (Kobayashi et al., 2002;Yang et al., 2009). ...
... In Egypt, potato is the second-largest horticultural crop exported after citrus, planted with a total area of 415 thousand feddans (feddan = 0.42 hectare), produced about 4.841 million tons (Anon., 2017). The export of Egyptian potatoes reached 737 thousand tons worth 211 million Increment of calcium content in potato plants increased plant resistance to infection with early blight and reduced internal defects of potato tubers, resulting in increased yield, storage life and quality of tubers (El-Mougy and Abdel-Kader, 2009). ...
... The protective effect of citrate against plant diseases is indirectly attributable by an increase in phenolic compounds and the activity of their associated enzymes (Ibrahim et al., 2015). Several studies have evaluated the effect of spraying potassium and calcium salts on the growth, yield and quality of potatoes (El-Mougy and Abdel-Kader, 2009;Palta, 2010;Salim et al., 2014;Talebi et al., 2015;Seifu and Deneke, 2017). Formula type plays a significant role in determining the final efficacy of potassium and calcium salts based product. ...
... Baking soda, also known as sodium bicarbonate (NaHCO 3 ) is an effective antibacterial, antifungal and antiviral agent which has been used for the control of pathogens affecting agricultural crops (El-Mougy and Abdel-Kader, 2009;Kareem et al., 2018a;Kareem et al., 2018b). The aim of the study is to indirectly control CMV in AYB by controlling the aphid vector using inorganic pesticide and baking soda which is an eco-friendly biopesticide. ...
... Several authors have reported the use of baking soda for the control of plant diseases (Palou et al., 2001;El-Mougy and Abdel-Kader, 2009;Kareem et al., 2018a).The results of CMV titers in AYB genotypes showed that the type of treatment given to plants determines their response to disease establishment. Baking soda competed favourably with lambda cyalothrin in the management of the virus. ...
... Recorded data were subjected to analysis of CD and CV value. Three replicates were maintained with each experiment (El-Mougy and Abdel-Kader, 2009;Mirkarimi et al., 2013). In each replication four plants per pots were placed. ...
Article
Leaf spot disease caused by Curvularia lunata is one of the major constraints affecting the cultivation of maize in India. Recently, it has been reported that the severity of curvularia leaf spot was prevalent in moderate to severe intensities and cause extensive damage to the crop thus lowering the yields. In the present study, in vivo preventive effect of Lawsonia inermis Linn. bioformulation on curvularia leaf spot disease of maize has been studied. All the experiments were conducted in pots. Percent disease index (PDI), percent efficacy of disease control (PEDC), chlorophyll contents, total carotenoids, and others various growth characteristics like plant height, number of leaves per plant, total carbohydrate and protein content were recorded. Percent seed germination was also observed for seeds treated with all formulations. A significant control of leaf spot disease was recorded with bioformulations treatment T3 [seeds were treated with partially purified acetone extract (4 ml): 100% clove bud oil cake (4 ml): 100% cow dung (2 ml)], T4 [seeds were treated with partially purified acetone extract (3 ml): 100% clove bud oil cake (4 ml): 100% cow dung (3 ml)], T2 [seeds were treated with 100% alcoholic crude extract (2 ml): 100% clove bud oil cake (6 ml): 100% cow dung (2 ml)] and T1 [seeds were treated with 100% alcoholic crude extract (4 ml): 100% clove bud oil cake (4 ml): 100% cow dung (2 ml)] as compared to other bioformulation treatments and its PDI and PEDC were recorded 9.10%, 10.00%, 17.50%, 19.00% and 89.47%, 88.43%, 79.76%, 78.03%, respectively. Results showed that treatment with bioformulation treatment T3, notably increased plant height, number of leaves per plant, chlorophyll, carotenoids, and total soluble sugar content followed by formulations number T4, T2, and T1. However, total soluble protein content was observed to be less in T3 as compared to control. This study suggests that these bioformulations could be essential towards sustainable agricultural science deprived of harming the ecosystem. The synthesized bioformulations have enormous potential to be commercially explored for agriculture use.
... Several authors have characterized reported antifungal chitinase of B. subtilis showing strong inhibitory activity against several phytopathogenic fungi (Kobayashi et al., 2002;Yang et al., 2009). El-Mougy et al. (2009) reported that chitinolytic bacteria, Bacillius subtilis and Pseudomonas fluorescens and their chitinase enzymes (culture filtrates) exhibited antagonistic activity against selected soil borne root rot pathogens(Rhizoctonia solani and Fusarium solani) in vitro. ...
... These two steps may contribute to the effective control of this pathogen in the cucumber crop. The results in this study also showed a significant improvement in the growth characters of cucumber plants treated with ZrONPs compared to untreated plants and this can be attributed to the application of ZrONPs activates the resistance induction in cucumber plant against the disease and also reduces the severity of the disease that positively affects the process of photosynthesis, which is reflected on plant growth (Brecht et al., 2003;El-Mougy and Abdel-Kader, 2009;Shenashan et al., 2017). ...
Article
Zirconium oxide nanoparticles (ZrONPs) were synthesized and evaluated for their ability to induce root rot resistance in cucumber and direct antifungal activity against Rhizoctonia solani. Resistance induction was investigated using real-time polymerase chain reaction (RT-PCR) and the effect of ZrONPs on the growth of cucumber plants was investigated. The results showed that ZrONPs at a concentration level of 100 μg/L significantly inhibited the growth of Rhizoctonia solani (86.6%) relative to untreated control under laboratory conditions. Cucumber plants treated with ZrONPs showed reduction in the severity of root rot disease under greenhouse (34-46%) and field conditions (52-56%) compared with non-treated control plants. Cucumber plants treated with ZrONPs expressed regulatory and defense genes involved in the salicylic acid (SA) and jasmonic acid (JA)/ethylene (ET) signaling pathways with 7-8 folds higher than the control. Treatment of cucumber with ZrONPs and carboxin + thiram significantly improved cucumber growth and yield characters. Therefore, using ZrONPs could be a new strategy to control this pathogen and considered the first report.