Least colony growth was observed in case of Derosal which gave effective control against C. gloeosporioides followed by Bayletan, Daconil, Ridomil Gold, Mancozeb and Alliete. This result is in agreement with Rahman and Hossain (1989) who reported that oil cake increased the disease severity. Ltd., New Delhi, Pages: 475.Tandon, I.N. Symbol- cd: cowdung, m: mill, g: ghani, ZS: ZnSO, Effect of fungicidal and minor element spray on severity in per cent fruit Infection, https://scialert.net/abstract/?doi=pjbs.2000.791.794, Guava fruit infection as affected by sprays of different fungicides and essential elements, Figure in a coulm with different letters differ at p=0.01. The efficacy of 21 fungicides against the pathogens was evaluated in vitro. Effect of antagonistic interaction on percentage inhibition in average colony growth (mm) of C. gloeosporioides in dual culture plate technique. an important fruit of subtropical countries is affected by about 177 pathogens of which, 167 are fungal, 3 bacterial, 3 algal, 3 nematodes and one epiphyte. Benomyl has now been withdrawn from sale. Gypsum alone had no effect on development of disease. Soil amendments: Per cent fruit infected with anthracnose in the untreated plants were significantly higher than in the treated plants (Table 1). C. gloeosporioides was inhibited and this is as a result of the production of metabolites. Incidence of disease depended upon the extent of fruit senescence and the amount often doubled two to three days after ripening. The Second Edition includes chapters on the following: Sterilization of culture apparatus and culture media Culture of pathogens with detailed techniques for 61 fungi and selected bacteria Long-term storage of plant pathogens Detection and estimation of inoculum for 28 soilborne fungal pathogens and 5 bacterial genera-15 methods for airborne inoculum and 13 methods for seedborne pathogens Establishment of disease and testing for disease resistance Work with soil microorganisms Fungicide evaluation Biological control Bright-field microscopy. Appearance of light yellow foliage with loss of turgidity and epinasty. Topsin-M was significantly superior to all other chemistries at 100, 75, 50 and 25 ppm concentrations followed by the Bavistin and Benlate whereas Antracol and Captan could not prove to be responsive against the fungus. Prentice-Hall of India Pvt. Cowdung, MOC (mill), MP, ZnSO4, cowdung+MOC (mill) and K+ZnSO4 results 100% reduction in fruit infection over control. Minimum (0.24-0.4%) surface area diseased was observed in PK+ZnSO4 and NPK+ZnSO4+Gypsum treatments. Anthracnose can survive on … Similar trend was observed in SOC, cowdung+SOC and gypsum treated plants but at apparently at a slower rate. Meah, 1992. etc., are some other important diseases. Eighty percent of the guava plants were found infected with anthracnose disease and over 40% of the fruit produced on those trees were severely infected. Efficacy of different chemicals (mancozeb, daconil, ridomil gold, derosal, bayleton, aliette), biological agents (Aspergillus flavus, A. niger, A. fumigatus, Trichoderma harzianum) and Plant growth promoting rhizobacteria (PGPR) (Bacillus subtilis and Pseudomonas fluorescens) was tested in vitro against Colletotrichum gloeosporioides, the causal agent of anthraconose of Guava. TSP, cowdung+MOC (ghani) were less effective but urea, gypsum, cowdung+SOC, and SOC were ineffective. In the absence of NPK, plants become weak and at this condition gypsum would not be able to resist the disease singly (Ferdous, 1990). It has been reported in all guava-growing areas around the world Probably, the success may be attributed to low disease incidence in the experimental site during the study period. Copper. & Sacc., the causative agent of guava anthracnose (Srivastava and Tandon, 1969; Tandon and Singh, 1970; Adisa, 1985), is known to show variations among its isolates (Sutton, 1980; Senaratna eta!., 1991). Currently there are only three fungicides registered for use on avocado. Results of investigation revealed that C. gloeosporioides was established as major causal organism. Pakistan Journal of Agricultural Sciences. Anthracnose caused by Gloeosporium psidii (Colletotrichum psidii) is one of the major diseases causing significant losses in the production of guava. In another experiment tilt, rovral, Mn, B and Zn at 1000, 500 and 2000 ppm respectively were sprayed separately for three times at 15 days interval starting from early fruit stage. Most isolates significantly inhibited the growth of Armillaria. Least colony growth was observed in case of Derosal which gave effective control against C. gloeosporioides followed by Bayletan, Daconil, Ridomil Gold, Mancozeb and Alliete. For its management, different fungicides namely; thiophanate methyl 70 WP, hexaconazole 5% EC, hexaconazole 4% + zineb 68% WP and carbendazim 12% + mancozeb 63% WP, mancozeb 75 wP and copper oxychloride 50 wP were screened against G. psidii … A severidade e incidência da doença foram avaliadas a cada dois dias durante 12 dias. Timely and accurate detection of the pathogen is important in developing a disease management strategy. OCCURRENCE OF GUAVA ANTHRACNOSE IN PUNJAB (PAKISTAN) AND ITS INTEGRATED MANAGEMENT Very slight infection occurred in NPK+ZnSO4+Gypsum, PK+ZnSO4, MOC (ghani) treated plants. Saksena, 1978. Rovral also gave significantly better result against the disease. The apparent symptoms can be observed on both vegetative and reproductive structure. Survey of fruit anthracnose of guava in BAU-GPC was carried out in the year 2013 and mean annual air temperature 29.67ºC (max) and 21.16 ºC (min), rainfall- 212.58 mm, relative humidity- 84.14% and soil temperature 26.95 ºC at 20 cm. Anthracnose: Colletotrichum gloeosporioides. Keywords: Antagonistic fungi, anthracnose, guava, disease management, PGPR INTRODUCTION Guava (Psidium guajava L.) an important member of family Myrtaceae L. is assumed to be originated from Southern part of Mexico. Disease severity was low during the experimental period, perhaps because of low inoculum pressure or unfavorable weather. MOC (ghani) and cowdung+MOC (ghani) caused 3.2 and 2.8% respectively. All of the mentioned minor elements are essentially required for plants. Values are average of five replications with two seasons. Values are average of five replications with two seasons. Antagonistic effects of different saprophytic fungi indicated the importance of many such fungi as a possible biocontrol agent. As Aspergillus species except A. fumigatus caused more than 50% of inhibition similar results were obtained by Pandey et al. Role of potassium in pathogenesis of Colletotrichum gloeosporioides in guava fruits. Anthracnose of guava treatment. As condições ambientais podem afetar tanto o desenvolvimento do patógeno quanto a taxa de amadurecimento dos frutos. One set of plants were kept for control treatment receiving no manures and or fertilizers. and S. Hossain, 1989. Occurrence of Colletotrichum anthracnose disease of guava fruit in Egypt Author WAHID, Omar A 1 [1] Department of Botany, Faculty of Science, Suez Canal University, 41522 Ismailia, Egypt Source. Gray isolates produced gray colonies on PDA, grew slightly or not at all on benomyl-amended medium, had conidia with rounded ends, and had similar RFLP patterns that were distinct from pink isolates. MOC: Mustard Oil Cake, SOC: Sesame Oil Cake, TSP: Triple Super Phosphate, MP: Muriate of Potash. Statistically the effect of Cowdung+MOC (ghani) was similar to NPK+ZnSO4+Gypsum although cowdung+MOC (ghani) applied plants showed more disease. Uprooted and burnt wilted plants. In this way, it reaches susceptible tissue of young leaves and fruits, and start to grow, triggering the symptoms. (2001). Oxford and IBH Publishing Co., New Delhi, India, pp: 109.Raghavan, U. and S.B. Least colony growth was observed in case of Derosal at 60 ppm, 20 ppm and 40 ppm with 7 mm, 10 mm and 11.6 mm growth respectively. OCCURRENCE OF GUAVA ANTHRACNOSE IN PUNJAB (PAKISTAN) AND ITS INTEGRATED MANAGEMENT Integration of various management practices has brought success in some crops (Raut, 1990; Singh et al., 1990; Adisa, 1985). four fruits were anthracnose (Colletotrichum gloeosporioides), Fusarium rot (Fusarium sp. This could possibly be as a result of competition between saprophytic and pathogenic microorganisms for nutrients. In: Diagnostic Criteria for Plants and Soils, Chapman, H.D. Pages 14. eBook ISBN 9780429504907. On the unripe fruits small, dark brown, sunken and small spots of pin head size are observed. It sounds like anthracnose or black spot this diseases in the mangos will be a real problem this year because of all the wet weather. The characteristic symptoms consist of sunken, dark colored, necrotic lesions. Table 1. Supplementation of minor essential nutrient element sometimes help in the reduction of incidence of disease. Symptoms of this disease are observed on mature fruits on the tree. Severely anthracnose infected fruits become fully unfit for consumption and lose food value and market price. By the application of these strategies the anthracnose problem can be managed properly with better economic benefits and small risk of health hazard effects. Therefore, this in vitro study strongly suggested that T. viride can be applied in field trial (in vivo) as effective biocontrol agents against anthracnose of sarpagandha (C. O. Colletotrichum gloeosporioides). Guava (Psidium guajava Linn.) Guava (Psidium guajava), the apple of tropics, is one of the most common fruits in India.It is the fourth most important fruit in area and production after mango, banana and citrus. Foliar spray: All the spray treatments significantly reduced fruit infection over control. Pages 147-152 Published online: 26 … Role of potassium in the pathogenesis of Colletotrichum gloeosporioides, in guava fruits. Guava it’s Diseases and their Management Guava (Psidium guajava L.) is an important fruit of subtropical countries. M.Sc. Mango, Avacado, Lychee, Longan, - Duration: 7:46. Fruit area infections of randomly selected 5 fruits per plant were recorded. Guava fruit anthracnose as affected by soil amendments with various treatment showing their rate of application, percent fruit infection and per cent fruit surface area diseased at 60 days after treatment, Plants in the same plot receiving no treatment served as control. Occurrence of Colletotrichum anthracnose disease of guava fruit in Egypt. Some of the twigs become bare and fail to bring forth new leaves or flowers and eventually dry up. It has been reported in all guava-growing areas around the world where high rainfall and humidity are present. Frutos de goiaba das cultivares Kumagai (polpa branca) e Pedro Sato (polpa vermelha) destacadas foram inoculadas com suspensão de conídios de Colletotrichum gloeosporioides e C. acutatum e incubados sob temperaturas constantes variando entre 10 e 35ºC e molhamento contínuo de 6 e 24 horas. SOC, cowdung+SOC, gypsum produced highest disease in order of their efficacy. In vitro biological control of Colletotrichum gloeosporioides by Aspergillus flavus gave good results and appeared to be the most effective against the test pathogen followed by Aspergillus niger and Trichoderma harzianum, while Aspergillus fumigatus gave poor results. The fungal disease overwinters in and on seeds, soil and garden debris. Anthracnose. The pathogen has a wide host range and successfully invades mango, pear and apple fruits supported by Wahid (2001) and Peres et al. Indian Phytopathol., 43: 287-287.Midha, S.K. Commercial mango production in Hawai‘i (2005). M. H. and, M. 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