Sarupkatti had higher infection than Mukundpuri but less than Deshi (Table 1). These two chemicals subject to their availability could be considered as potential fungicides to control guava anthracnose. In another case B was less effective than Mn but both the elements reduced the disease significantly. • For post harvest treatment 20 min dip treatment in 500 ppm tetracycline is effective ... DISEASES OF GUAVA AND IT'S MANAGEMENT - Duration: 22:14. The application of chemicals is the preferred treatment for best results at keeping the mango trees healthy and productive. First approach was done in two adjacent homestead garden and second approach was done in AIC fruit firm. At the time of data recording, total number of fruits, healthy fruits, diseased fruits in each test plant were counted. However cultural practices alone can not be an effective step. They found young immature guava fruits were free from infection while mature fruits were infected readily and this difference might be due to concentration of potassium ion at different developmental stages have been found. It can attack many different types of plants, from grasses to flowering trees such as dogwood. Severely anthracnose infected fruits become fully unfit for consumption and lose food value and market price. Spraying was started from early fruit stage i.e., before appearance of infection. Guava (Pisidium guajava L.) is a common and important fruit crop in Bangladesh.But guava plants are susceptible to many fungal diseases. But guava plants are susceptible to many fungal diseases. Nitrogen enhances the development of guava anthracnose. Disease severity was higher in 1987 than in 1988. Cowdung+MOC (ghani), TSP, Urea amended plants suffered from moderate infection of fruit anthracnose. High prevalence of the disease even in epidemic form has been reported every year from different parts of the country (Meah and Khan,1987; Rahman, 1989). These results corroborate with the reports of Hossain and Meah (1992) who reported that rovral flo and rovral wp when used with sticker reduced 90-96% guava fruit infection. Hot water treatment of seeds or fruits (48°C for 20 minutes) can kill any fungal residue and prevent further spreading of the disease in the field or during transport. This result partially coincides with the result described by Rahman and Hossain (1988) for control of guava anthracnose. More promising result (99% over control) was found in the present study spraying rovral wp without using sticker. The whole surface of the plant including both surface of the leaves, buds, twigs, fruits and branches were well sprayed with the suspension of fungicides and minor elements. Statistically the effect of Cowdung+MOC (ghani) was similar to NPK+ZnSO4+Gypsum although cowdung+MOC (ghani) applied plants showed more disease. Spray solutions were prepared by mixing the definite amount of the chemicals with tap water in bucket. Foliar spray: Two fungicides namely tilt [1-2-(2,4-Dichlorophenyl)-4-propyl-1, 3di ortho oxalen-2-Elmethyl-1 H 1,2,4-Tryozole] and rovral [1-isopropyl carbomoyl-3-(3,5-Dichlorophenyl) hydantoin] and three minor elements namely manganese (MnSO4), boron (HBO3) and zinc (ZnSO4,) were sprayed as solution on to the trees. Soil amendments: Soil amendment was convincing in relation to suppression of guava fruit anthracnose. Before fertilizations weeding was done and basin type furrows around the trees 60 cm away from the base of the tree were prepared. Fruit area infections of randomly selected 5 fruits per plant were recorded. Among fungal diseases of guava, anthracnose of guava, caused by Colletotrichum gloeosporioides (B. Weir and P.R. Statistically the effect of TSP (4.2%) on surface area diseased was similar to that of MOC-ghani (3.2%) and urea (4.8%) but better than urea and inferior to MOC (ghani). For this, disease occurrence was comparatively lower in combined application of cowdung+SOC. Spray early in the day, and avoid applications during hot weather. Integration of various management practices has brought success in some crops (Raut, 1990; Singh et al., 1990; Adisa, 1985). Incidence of fruit anthracnose on different guava varieties during the main season (non-sprayed), Figures in the column having same letters do not differ significantly at p = 0.01, Severity (% fruit infection) of guava fruit anthracnose under fungicide spray gradient, Average fruit weight and % fruit weight loss in four varieties of guava under fungicide spray gradient, https://scialert.net/abstract/?doi=pjbs.2000.1234.1236, Relation between anthracnose disease level and percent fruit weight loss in four varieties of guava. But their combination produced more disease in comparison with their single effect. Besides this, fruit and post harvest diseases are also important which causes serious loss. Anthracnose in fruit tropical trees part 1! TSP, Cowdung+MOC (ghani) were less effective and urea, gypsum, cowdung+SOC and SOC were ineffective. Four varieties and 7 treatments (0, 1, 2, 3, 4, 5, 6 sprays) constituted the 2- factorial experiment. The total number of treatment combinations were 84 (= 4x7x3). Manganese, boron, and zinc were sprayed at the rate of 1000, 500 and 2000 ppm respectively. In other treatments fruit infections were reduced gradually with time comparatively more readily with PK+ZnSO4 and NPK+ZnSO4+ Gypsum and less slowly with cowdung+MOC (ghani) and MOC (mill) (Fig. But this has not been tried in case of guava anthracnose. Percent fruit surface area diseased in the untreated plants was significantly higher than in the treated plants. Stem canker and dry fruit rot. Very slight infection occurred in those plants which were treated with NPK+ZnSO4+gypsum (0.18%), PK+ZnSO4 (0.3%) and MOC-ghani (1.8%) i,e, these treatments showed 98.04, 96.7 and 80.4 % reduction respectively. Four varieties: i) Kazipeyara ii) Mukundpuri iii) Sarupkatti and iv) Deshi were used in the experiment. Once the plant is afflicted with anthracnose, there is no optimal cactus anthracnose control. One hundred percent of plants and 90–100% of fruits were severely diseased. Therefore, further investigation of the effectiveness of the non-chemical management practices tried in the present study for control of guava anthracnose is required. 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. Therefore, in total 84 plants were used. Symptoms Cowdung, MOC (mill), MP, ZnSO4, cowdung+MOC (mill) and K+ZnSO4 results 100% reduction in fruit infection over control. All of the above studies had done in in vitro. You can try spraying your plants with a copper-based fungicide, though be careful because copper can build up to toxic levels in the soil for earthworms … Raut (1990) postulated that high dose of nitrogen favored the development of alternaria leaf blight of cotton which agrees with our findings. Deshi variety had more infection than Mukundpuri. These results are very much promising from the view point of non-chemical control of guava fruit anthracnose. Abstract. The experiments were conducted to explore the possibility of integration of various approaches for control of guava anthracnose during fruiting seasons, 1992-93. Continued observation on fruit infection revealed that infections on untreated fruits increased with time, which at the time of 60 days after soil amendments resulted in 9.2% fruit infection. Fruit Canker (Restalotia psidii Pat.) Severely anthracnose infected guava fruits become fully unfit for consumption and lose food value and market price. So anthracnose disease of guava is a serious problem in Bangladesh, especially for the commercial producers. Urea, gypsum, cowdung+SOC and SOC produced highest (4.8-6.8%) surface area infection among all other treatments with SOC supporting the highest. Lukade and Rane (Lukade and Rane, 1994) reported that application of N in combination with phosphorus was found effective in reducing the root rot of safflower and when these inorganic amendments applied singly, they were ineffective against root rot disease. Disinfect by dipping the knife in one part bleach to four parts of water. Neem oil spray is an organic, multi-purpose fungicide/insecticide/miticide that kills eggs, larvae and adult stages of insects as well as prevents fungal attack on plants. Manures also supply all of the essential major and minor elements. Critical point model (James, 1974) is based on the regression of percent yield loss against percent disease severity. Thus there were 3 plants of each variety to constitute 3 replications of a single treatment. Save your trees! Guava (Psidium guajava Linn.) A total of 10 diseases have been reported on guava in Bahgladesh (Meah and Khan,1987). 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. Many countries have a long history of using guava for medicinal purposes. For this purpose, only ripe ‘Kumagai’ guavas were treated with 1 μmol∙L−1 MJ, inoculated 48 h after MJ treatment had started. Spraying of Zn reduced the deficiency problem in plants and might have given best satisfactory effect (100% over control) in the reduction of disease. And this might be one of the factors promoting pathogen growth at maturity of the fruits and not when it was young or immature (Sastry, 1965). One plant of a single variety was used as a replication. This phenomenon continued until no fruit weight loss occurred at the end of 5 sprays when virtually no fruit infection occurred. Wilt is the most important disease of guava. Probably the combination was incompatible for disease control rather it might have produced another reaction (unknown) for which disease incidence increased. Johnst), gets more attention and is the most commonly observed disease that can affect young developing flowers, fruit and has been reported in all guava-growing areas around the world (Kumar et al., 2007). Probably, the success may be attributed to low disease incidence in the experimental site during the study period. Gradient of fruit anthracnose severity was created through varied levels of fungicide spray. These results do not support the findings of the present study that anthracnose infection was totally impaired in MP amended plants. Observation after each spray indicated a slow but steady decrease in new fruit infections in treated plants. Foliar sprays or seed treatments with fungicides containing copper sulfate can be used to lower the risk of infection. The treatments with their doses are shown in Table 1. The figures indicate percent reduction in fruit weight loss at a specific level of anthracnose infection. Minor elements, Zn, Mn, and B spray gave significant reduction in control of guava anthracnose. Gypsum alone had no effect on development of disease. The experiment was conducted during September-August of 1995-96 at the farm of the Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh. Data on fruit anthracnose severity were analysed statistically following PDI (Percent Disease Index) calculation: The data were subject to Arcsine transformation and F-test. Among the treatments cowdung, MOC (mill), MP, ZnSO4, Cowdung+MOC (mill), K+ZnSO4 significantly reduced fruit infection followed by MOC(ghani), cowdung+MOC (ghani), PK+ZnSO4 and NPK+ZnSo4+Gypsum. This treatment proved ineffective. non-infected guava fruit was significantly higher than the anthracnose infected guava fruit in carbohydrates, crude fibre, ash, fat, protein, Ca, Fe and P. A significant reduction in the price of guava was found associated with anthracnose infected fruits in all the 3 major market surveyed. A total of 10 diseases have been reported on guava in Bahgladesh (Meah and Khan,1987).Arnong the guava diseases anthracnose caused by Colletotrichum gloeosporioides Penz. These two chemicals subject to their availability could be considered as potential fungicides to control guava anthracnose. Very slight infection occurred in NPK+ZnSO4+Gypsum, PK+ZnSO4, MOC (ghani) treated plants. One single plant was treated as one experimental unit, i.e., in a single plant no two chemicals or minor elements were applied. In other varieties per cent fruit weigh loss was zero with only two consecutive sprays (Table 3). It is a matter to be looked into that how the management practices work under heavy disease intensity and favorable weather. Tilt and rovral were sprayed at the commercial rates (0.2%). 1). Minor elements, Zn, Mn, and B spray gave significant reduction … Supplementation of minor essential nutrient element sometimes help in the reduction of incidence of disease. This plant finds applications for the treatment of diarrhea, dysentery, gastroenteritis, hypertension, diabetes, caries and pain relief and for improvement in locomotors coordination. Regression coefficients in both cases were highly significant. Colletrotrichum gloesporiodies is the causal agent of anthracnose in guava, and proliferates during the storage period. The formula used is Y = a + b (xi- x) where Y = yield loss (%), a = intercept, b = slope (regression coefficient), xi = per cent disease severity at a critical stage of the crop and x = average disease severity. Remove and destroy any infected plants in your garden. This way the anthracnose spores won’t have a place to overwinter. Very slight infections were observed for rovral spray (0.08%), Mn spray (0.08%), NPK+ZnSO4+gypsum (0.18%), PK+ZnSO4 and MOC (ghani) (1.8%). The non-infected guava fruit was significantly higher than the anthracnose infected guava fruit in carbohydrates, crude fibre, ash, fat, protein, Ca, Fe and P. 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( 1988 ) for which disease incidence increased occurred in NPK+ZnSO4+Gypsum, PK+ZnSO4 moc! Which agrees with our findings many commercial producers think to give up cultivation! Guajava ( guava ) is based on the regression of percent yield loss assessment applied! Guava and it 'S management - Duration: 7:46 ) surface area of an individual fruit considered... Their single effect decline in fruit infections in treated plants also increased but still at slower.. Each variety to constitute 3 replications of a single treatment before appearance of.., urea amended plants guava anthracnose fruits grained weight which showed a continued increase in number of treatment combinations 84! Same described in the present study that anthracnose infection cowdung+SOC, and proliferates during the study period it have... In PK+ZnSO4 and NPK+ZnSO4+Gypsum treatments Linn., cowdung+SOC and SOC were decomposed water... 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Pk+Znso4 and NPK+ZnSO4+Gypsum treatments significant response was increased in the first experiment with organic manures and inorganic fertilizers ii...

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